![Stephen Boyd](/assets/img/avatar_default.png)
Use the provider based method to get a clock's name so that we can get rid of the clk member in struct clk_hw one day. Mostly converted with the following coccinelle script. @@ struct clk_hw *E; @@ -__clk_get_name(E->clk) +clk_hw_get_name(E) Acked-by: Heiko Stuebner <heiko@sntech.de> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Tomasz Figa <tomasz.figa@gmail.com> Cc: Peter De Schrijver <pdeschrijver@nvidia.com> Cc: Prashant Gaikwad <pgaikwad@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Thierry Reding <treding@nvidia.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: Tero Kristo <t-kristo@ti.com> Cc: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Andrew Bresticker <abrestic@chromium.org> Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kevin Cernekee <cernekee@chromium.org> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-tegra@vger.kernel.org Cc: linux-omap@vger.kernel.org Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
1898 lines
47 KiB
C
1898 lines
47 KiB
C
/*
|
|
* Copyright (c) 2012, 2013, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/io.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/err.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/clk-provider.h>
|
|
|
|
#include "clk.h"
|
|
|
|
#define PLL_BASE_BYPASS BIT(31)
|
|
#define PLL_BASE_ENABLE BIT(30)
|
|
#define PLL_BASE_REF_ENABLE BIT(29)
|
|
#define PLL_BASE_OVERRIDE BIT(28)
|
|
|
|
#define PLL_BASE_DIVP_SHIFT 20
|
|
#define PLL_BASE_DIVP_WIDTH 3
|
|
#define PLL_BASE_DIVN_SHIFT 8
|
|
#define PLL_BASE_DIVN_WIDTH 10
|
|
#define PLL_BASE_DIVM_SHIFT 0
|
|
#define PLL_BASE_DIVM_WIDTH 5
|
|
#define PLLU_POST_DIVP_MASK 0x1
|
|
|
|
#define PLL_MISC_DCCON_SHIFT 20
|
|
#define PLL_MISC_CPCON_SHIFT 8
|
|
#define PLL_MISC_CPCON_WIDTH 4
|
|
#define PLL_MISC_CPCON_MASK ((1 << PLL_MISC_CPCON_WIDTH) - 1)
|
|
#define PLL_MISC_LFCON_SHIFT 4
|
|
#define PLL_MISC_LFCON_WIDTH 4
|
|
#define PLL_MISC_LFCON_MASK ((1 << PLL_MISC_LFCON_WIDTH) - 1)
|
|
#define PLL_MISC_VCOCON_SHIFT 0
|
|
#define PLL_MISC_VCOCON_WIDTH 4
|
|
#define PLL_MISC_VCOCON_MASK ((1 << PLL_MISC_VCOCON_WIDTH) - 1)
|
|
|
|
#define OUT_OF_TABLE_CPCON 8
|
|
|
|
#define PMC_PLLP_WB0_OVERRIDE 0xf8
|
|
#define PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE BIT(12)
|
|
#define PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE BIT(11)
|
|
|
|
#define PLL_POST_LOCK_DELAY 50
|
|
|
|
#define PLLDU_LFCON_SET_DIVN 600
|
|
|
|
#define PLLE_BASE_DIVCML_SHIFT 24
|
|
#define PLLE_BASE_DIVCML_MASK 0xf
|
|
#define PLLE_BASE_DIVP_SHIFT 16
|
|
#define PLLE_BASE_DIVP_WIDTH 6
|
|
#define PLLE_BASE_DIVN_SHIFT 8
|
|
#define PLLE_BASE_DIVN_WIDTH 8
|
|
#define PLLE_BASE_DIVM_SHIFT 0
|
|
#define PLLE_BASE_DIVM_WIDTH 8
|
|
|
|
#define PLLE_MISC_SETUP_BASE_SHIFT 16
|
|
#define PLLE_MISC_SETUP_BASE_MASK (0xffff << PLLE_MISC_SETUP_BASE_SHIFT)
|
|
#define PLLE_MISC_LOCK_ENABLE BIT(9)
|
|
#define PLLE_MISC_READY BIT(15)
|
|
#define PLLE_MISC_SETUP_EX_SHIFT 2
|
|
#define PLLE_MISC_SETUP_EX_MASK (3 << PLLE_MISC_SETUP_EX_SHIFT)
|
|
#define PLLE_MISC_SETUP_MASK (PLLE_MISC_SETUP_BASE_MASK | \
|
|
PLLE_MISC_SETUP_EX_MASK)
|
|
#define PLLE_MISC_SETUP_VALUE (7 << PLLE_MISC_SETUP_BASE_SHIFT)
|
|
|
|
#define PLLE_SS_CTRL 0x68
|
|
#define PLLE_SS_CNTL_BYPASS_SS BIT(10)
|
|
#define PLLE_SS_CNTL_INTERP_RESET BIT(11)
|
|
#define PLLE_SS_CNTL_SSC_BYP BIT(12)
|
|
#define PLLE_SS_CNTL_CENTER BIT(14)
|
|
#define PLLE_SS_CNTL_INVERT BIT(15)
|
|
#define PLLE_SS_DISABLE (PLLE_SS_CNTL_BYPASS_SS | PLLE_SS_CNTL_INTERP_RESET |\
|
|
PLLE_SS_CNTL_SSC_BYP)
|
|
#define PLLE_SS_MAX_MASK 0x1ff
|
|
#define PLLE_SS_MAX_VAL 0x25
|
|
#define PLLE_SS_INC_MASK (0xff << 16)
|
|
#define PLLE_SS_INC_VAL (0x1 << 16)
|
|
#define PLLE_SS_INCINTRV_MASK (0x3f << 24)
|
|
#define PLLE_SS_INCINTRV_VAL (0x20 << 24)
|
|
#define PLLE_SS_COEFFICIENTS_MASK \
|
|
(PLLE_SS_MAX_MASK | PLLE_SS_INC_MASK | PLLE_SS_INCINTRV_MASK)
|
|
#define PLLE_SS_COEFFICIENTS_VAL \
|
|
(PLLE_SS_MAX_VAL | PLLE_SS_INC_VAL | PLLE_SS_INCINTRV_VAL)
|
|
|
|
#define PLLE_AUX_PLLP_SEL BIT(2)
|
|
#define PLLE_AUX_USE_LOCKDET BIT(3)
|
|
#define PLLE_AUX_ENABLE_SWCTL BIT(4)
|
|
#define PLLE_AUX_SS_SWCTL BIT(6)
|
|
#define PLLE_AUX_SEQ_ENABLE BIT(24)
|
|
#define PLLE_AUX_SEQ_START_STATE BIT(25)
|
|
#define PLLE_AUX_PLLRE_SEL BIT(28)
|
|
|
|
#define XUSBIO_PLL_CFG0 0x51c
|
|
#define XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0)
|
|
#define XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL BIT(2)
|
|
#define XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET BIT(6)
|
|
#define XUSBIO_PLL_CFG0_SEQ_ENABLE BIT(24)
|
|
#define XUSBIO_PLL_CFG0_SEQ_START_STATE BIT(25)
|
|
|
|
#define SATA_PLL_CFG0 0x490
|
|
#define SATA_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0)
|
|
#define SATA_PLL_CFG0_PADPLL_USE_LOCKDET BIT(2)
|
|
#define SATA_PLL_CFG0_SEQ_ENABLE BIT(24)
|
|
#define SATA_PLL_CFG0_SEQ_START_STATE BIT(25)
|
|
|
|
#define PLLE_MISC_PLLE_PTS BIT(8)
|
|
#define PLLE_MISC_IDDQ_SW_VALUE BIT(13)
|
|
#define PLLE_MISC_IDDQ_SW_CTRL BIT(14)
|
|
#define PLLE_MISC_VREG_BG_CTRL_SHIFT 4
|
|
#define PLLE_MISC_VREG_BG_CTRL_MASK (3 << PLLE_MISC_VREG_BG_CTRL_SHIFT)
|
|
#define PLLE_MISC_VREG_CTRL_SHIFT 2
|
|
#define PLLE_MISC_VREG_CTRL_MASK (2 << PLLE_MISC_VREG_CTRL_SHIFT)
|
|
|
|
#define PLLCX_MISC_STROBE BIT(31)
|
|
#define PLLCX_MISC_RESET BIT(30)
|
|
#define PLLCX_MISC_SDM_DIV_SHIFT 28
|
|
#define PLLCX_MISC_SDM_DIV_MASK (0x3 << PLLCX_MISC_SDM_DIV_SHIFT)
|
|
#define PLLCX_MISC_FILT_DIV_SHIFT 26
|
|
#define PLLCX_MISC_FILT_DIV_MASK (0x3 << PLLCX_MISC_FILT_DIV_SHIFT)
|
|
#define PLLCX_MISC_ALPHA_SHIFT 18
|
|
#define PLLCX_MISC_DIV_LOW_RANGE \
|
|
((0x1 << PLLCX_MISC_SDM_DIV_SHIFT) | \
|
|
(0x1 << PLLCX_MISC_FILT_DIV_SHIFT))
|
|
#define PLLCX_MISC_DIV_HIGH_RANGE \
|
|
((0x2 << PLLCX_MISC_SDM_DIV_SHIFT) | \
|
|
(0x2 << PLLCX_MISC_FILT_DIV_SHIFT))
|
|
#define PLLCX_MISC_COEF_LOW_RANGE \
|
|
((0x14 << PLLCX_MISC_KA_SHIFT) | (0x38 << PLLCX_MISC_KB_SHIFT))
|
|
#define PLLCX_MISC_KA_SHIFT 2
|
|
#define PLLCX_MISC_KB_SHIFT 9
|
|
#define PLLCX_MISC_DEFAULT (PLLCX_MISC_COEF_LOW_RANGE | \
|
|
(0x19 << PLLCX_MISC_ALPHA_SHIFT) | \
|
|
PLLCX_MISC_DIV_LOW_RANGE | \
|
|
PLLCX_MISC_RESET)
|
|
#define PLLCX_MISC1_DEFAULT 0x000d2308
|
|
#define PLLCX_MISC2_DEFAULT 0x30211200
|
|
#define PLLCX_MISC3_DEFAULT 0x200
|
|
|
|
#define PMC_SATA_PWRGT 0x1ac
|
|
#define PMC_SATA_PWRGT_PLLE_IDDQ_VALUE BIT(5)
|
|
#define PMC_SATA_PWRGT_PLLE_IDDQ_SWCTL BIT(4)
|
|
|
|
#define PLLSS_MISC_KCP 0
|
|
#define PLLSS_MISC_KVCO 0
|
|
#define PLLSS_MISC_SETUP 0
|
|
#define PLLSS_EN_SDM 0
|
|
#define PLLSS_EN_SSC 0
|
|
#define PLLSS_EN_DITHER2 0
|
|
#define PLLSS_EN_DITHER 1
|
|
#define PLLSS_SDM_RESET 0
|
|
#define PLLSS_CLAMP 0
|
|
#define PLLSS_SDM_SSC_MAX 0
|
|
#define PLLSS_SDM_SSC_MIN 0
|
|
#define PLLSS_SDM_SSC_STEP 0
|
|
#define PLLSS_SDM_DIN 0
|
|
#define PLLSS_MISC_DEFAULT ((PLLSS_MISC_KCP << 25) | \
|
|
(PLLSS_MISC_KVCO << 24) | \
|
|
PLLSS_MISC_SETUP)
|
|
#define PLLSS_CFG_DEFAULT ((PLLSS_EN_SDM << 31) | \
|
|
(PLLSS_EN_SSC << 30) | \
|
|
(PLLSS_EN_DITHER2 << 29) | \
|
|
(PLLSS_EN_DITHER << 28) | \
|
|
(PLLSS_SDM_RESET) << 27 | \
|
|
(PLLSS_CLAMP << 22))
|
|
#define PLLSS_CTRL1_DEFAULT \
|
|
((PLLSS_SDM_SSC_MAX << 16) | PLLSS_SDM_SSC_MIN)
|
|
#define PLLSS_CTRL2_DEFAULT \
|
|
((PLLSS_SDM_SSC_STEP << 16) | PLLSS_SDM_DIN)
|
|
#define PLLSS_LOCK_OVERRIDE BIT(24)
|
|
#define PLLSS_REF_SRC_SEL_SHIFT 25
|
|
#define PLLSS_REF_SRC_SEL_MASK (3 << PLLSS_REF_SRC_SEL_SHIFT)
|
|
|
|
#define pll_readl(offset, p) readl_relaxed(p->clk_base + offset)
|
|
#define pll_readl_base(p) pll_readl(p->params->base_reg, p)
|
|
#define pll_readl_misc(p) pll_readl(p->params->misc_reg, p)
|
|
#define pll_override_readl(offset, p) readl_relaxed(p->pmc + offset)
|
|
|
|
#define pll_writel(val, offset, p) writel_relaxed(val, p->clk_base + offset)
|
|
#define pll_writel_base(val, p) pll_writel(val, p->params->base_reg, p)
|
|
#define pll_writel_misc(val, p) pll_writel(val, p->params->misc_reg, p)
|
|
#define pll_override_writel(val, offset, p) writel(val, p->pmc + offset)
|
|
|
|
#define mask(w) ((1 << (w)) - 1)
|
|
#define divm_mask(p) mask(p->params->div_nmp->divm_width)
|
|
#define divn_mask(p) mask(p->params->div_nmp->divn_width)
|
|
#define divp_mask(p) (p->params->flags & TEGRA_PLLU ? PLLU_POST_DIVP_MASK :\
|
|
mask(p->params->div_nmp->divp_width))
|
|
|
|
#define divm_shift(p) (p)->params->div_nmp->divm_shift
|
|
#define divn_shift(p) (p)->params->div_nmp->divn_shift
|
|
#define divp_shift(p) (p)->params->div_nmp->divp_shift
|
|
|
|
#define divm_mask_shifted(p) (divm_mask(p) << divm_shift(p))
|
|
#define divn_mask_shifted(p) (divn_mask(p) << divn_shift(p))
|
|
#define divp_mask_shifted(p) (divp_mask(p) << divp_shift(p))
|
|
|
|
#define divm_max(p) (divm_mask(p))
|
|
#define divn_max(p) (divn_mask(p))
|
|
#define divp_max(p) (1 << (divp_mask(p)))
|
|
|
|
static struct div_nmp default_nmp = {
|
|
.divn_shift = PLL_BASE_DIVN_SHIFT,
|
|
.divn_width = PLL_BASE_DIVN_WIDTH,
|
|
.divm_shift = PLL_BASE_DIVM_SHIFT,
|
|
.divm_width = PLL_BASE_DIVM_WIDTH,
|
|
.divp_shift = PLL_BASE_DIVP_SHIFT,
|
|
.divp_width = PLL_BASE_DIVP_WIDTH,
|
|
};
|
|
|
|
static void clk_pll_enable_lock(struct tegra_clk_pll *pll)
|
|
{
|
|
u32 val;
|
|
|
|
if (!(pll->params->flags & TEGRA_PLL_USE_LOCK))
|
|
return;
|
|
|
|
if (!(pll->params->flags & TEGRA_PLL_HAS_LOCK_ENABLE))
|
|
return;
|
|
|
|
val = pll_readl_misc(pll);
|
|
val |= BIT(pll->params->lock_enable_bit_idx);
|
|
pll_writel_misc(val, pll);
|
|
}
|
|
|
|
static int clk_pll_wait_for_lock(struct tegra_clk_pll *pll)
|
|
{
|
|
int i;
|
|
u32 val, lock_mask;
|
|
void __iomem *lock_addr;
|
|
|
|
if (!(pll->params->flags & TEGRA_PLL_USE_LOCK)) {
|
|
udelay(pll->params->lock_delay);
|
|
return 0;
|
|
}
|
|
|
|
lock_addr = pll->clk_base;
|
|
if (pll->params->flags & TEGRA_PLL_LOCK_MISC)
|
|
lock_addr += pll->params->misc_reg;
|
|
else
|
|
lock_addr += pll->params->base_reg;
|
|
|
|
lock_mask = pll->params->lock_mask;
|
|
|
|
for (i = 0; i < pll->params->lock_delay; i++) {
|
|
val = readl_relaxed(lock_addr);
|
|
if ((val & lock_mask) == lock_mask) {
|
|
udelay(PLL_POST_LOCK_DELAY);
|
|
return 0;
|
|
}
|
|
udelay(2); /* timeout = 2 * lock time */
|
|
}
|
|
|
|
pr_err("%s: Timed out waiting for pll %s lock\n", __func__,
|
|
clk_hw_get_name(&pll->hw));
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int clk_pll_is_enabled(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
u32 val;
|
|
|
|
if (pll->params->flags & TEGRA_PLLM) {
|
|
val = readl_relaxed(pll->pmc + PMC_PLLP_WB0_OVERRIDE);
|
|
if (val & PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE)
|
|
return val & PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE ? 1 : 0;
|
|
}
|
|
|
|
val = pll_readl_base(pll);
|
|
|
|
return val & PLL_BASE_ENABLE ? 1 : 0;
|
|
}
|
|
|
|
static void _clk_pll_enable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
u32 val;
|
|
|
|
clk_pll_enable_lock(pll);
|
|
|
|
val = pll_readl_base(pll);
|
|
if (pll->params->flags & TEGRA_PLL_BYPASS)
|
|
val &= ~PLL_BASE_BYPASS;
|
|
val |= PLL_BASE_ENABLE;
|
|
pll_writel_base(val, pll);
|
|
|
|
if (pll->params->flags & TEGRA_PLLM) {
|
|
val = readl_relaxed(pll->pmc + PMC_PLLP_WB0_OVERRIDE);
|
|
val |= PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE;
|
|
writel_relaxed(val, pll->pmc + PMC_PLLP_WB0_OVERRIDE);
|
|
}
|
|
}
|
|
|
|
static void _clk_pll_disable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
u32 val;
|
|
|
|
val = pll_readl_base(pll);
|
|
if (pll->params->flags & TEGRA_PLL_BYPASS)
|
|
val &= ~PLL_BASE_BYPASS;
|
|
val &= ~PLL_BASE_ENABLE;
|
|
pll_writel_base(val, pll);
|
|
|
|
if (pll->params->flags & TEGRA_PLLM) {
|
|
val = readl_relaxed(pll->pmc + PMC_PLLP_WB0_OVERRIDE);
|
|
val &= ~PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE;
|
|
writel_relaxed(val, pll->pmc + PMC_PLLP_WB0_OVERRIDE);
|
|
}
|
|
}
|
|
|
|
static int clk_pll_enable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long flags = 0;
|
|
int ret;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
_clk_pll_enable(hw);
|
|
|
|
ret = clk_pll_wait_for_lock(pll);
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void clk_pll_disable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long flags = 0;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
_clk_pll_disable(hw);
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
}
|
|
|
|
static int _p_div_to_hw(struct clk_hw *hw, u8 p_div)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
struct pdiv_map *p_tohw = pll->params->pdiv_tohw;
|
|
|
|
if (p_tohw) {
|
|
while (p_tohw->pdiv) {
|
|
if (p_div <= p_tohw->pdiv)
|
|
return p_tohw->hw_val;
|
|
p_tohw++;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int _hw_to_p_div(struct clk_hw *hw, u8 p_div_hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
struct pdiv_map *p_tohw = pll->params->pdiv_tohw;
|
|
|
|
if (p_tohw) {
|
|
while (p_tohw->pdiv) {
|
|
if (p_div_hw == p_tohw->hw_val)
|
|
return p_tohw->pdiv;
|
|
p_tohw++;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 1 << p_div_hw;
|
|
}
|
|
|
|
static int _get_table_rate(struct clk_hw *hw,
|
|
struct tegra_clk_pll_freq_table *cfg,
|
|
unsigned long rate, unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
struct tegra_clk_pll_freq_table *sel;
|
|
|
|
for (sel = pll->params->freq_table; sel->input_rate != 0; sel++)
|
|
if (sel->input_rate == parent_rate &&
|
|
sel->output_rate == rate)
|
|
break;
|
|
|
|
if (sel->input_rate == 0)
|
|
return -EINVAL;
|
|
|
|
cfg->input_rate = sel->input_rate;
|
|
cfg->output_rate = sel->output_rate;
|
|
cfg->m = sel->m;
|
|
cfg->n = sel->n;
|
|
cfg->p = sel->p;
|
|
cfg->cpcon = sel->cpcon;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int _calc_rate(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg,
|
|
unsigned long rate, unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long cfreq;
|
|
u32 p_div = 0;
|
|
int ret;
|
|
|
|
switch (parent_rate) {
|
|
case 12000000:
|
|
case 26000000:
|
|
cfreq = (rate <= 1000000 * 1000) ? 1000000 : 2000000;
|
|
break;
|
|
case 13000000:
|
|
cfreq = (rate <= 1000000 * 1000) ? 1000000 : 2600000;
|
|
break;
|
|
case 16800000:
|
|
case 19200000:
|
|
cfreq = (rate <= 1200000 * 1000) ? 1200000 : 2400000;
|
|
break;
|
|
case 9600000:
|
|
case 28800000:
|
|
/*
|
|
* PLL_P_OUT1 rate is not listed in PLLA table
|
|
*/
|
|
cfreq = parent_rate/(parent_rate/1000000);
|
|
break;
|
|
default:
|
|
pr_err("%s Unexpected reference rate %lu\n",
|
|
__func__, parent_rate);
|
|
BUG();
|
|
}
|
|
|
|
/* Raise VCO to guarantee 0.5% accuracy */
|
|
for (cfg->output_rate = rate; cfg->output_rate < 200 * cfreq;
|
|
cfg->output_rate <<= 1)
|
|
p_div++;
|
|
|
|
cfg->m = parent_rate / cfreq;
|
|
cfg->n = cfg->output_rate / cfreq;
|
|
cfg->cpcon = OUT_OF_TABLE_CPCON;
|
|
|
|
if (cfg->m > divm_max(pll) || cfg->n > divn_max(pll) ||
|
|
(1 << p_div) > divp_max(pll)
|
|
|| cfg->output_rate > pll->params->vco_max) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
cfg->output_rate >>= p_div;
|
|
|
|
if (pll->params->pdiv_tohw) {
|
|
ret = _p_div_to_hw(hw, 1 << p_div);
|
|
if (ret < 0)
|
|
return ret;
|
|
else
|
|
cfg->p = ret;
|
|
} else
|
|
cfg->p = p_div;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void _update_pll_mnp(struct tegra_clk_pll *pll,
|
|
struct tegra_clk_pll_freq_table *cfg)
|
|
{
|
|
u32 val;
|
|
struct tegra_clk_pll_params *params = pll->params;
|
|
struct div_nmp *div_nmp = params->div_nmp;
|
|
|
|
if ((params->flags & TEGRA_PLLM) &&
|
|
(pll_override_readl(PMC_PLLP_WB0_OVERRIDE, pll) &
|
|
PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE)) {
|
|
val = pll_override_readl(params->pmc_divp_reg, pll);
|
|
val &= ~(divp_mask(pll) << div_nmp->override_divp_shift);
|
|
val |= cfg->p << div_nmp->override_divp_shift;
|
|
pll_override_writel(val, params->pmc_divp_reg, pll);
|
|
|
|
val = pll_override_readl(params->pmc_divnm_reg, pll);
|
|
val &= ~(divm_mask(pll) << div_nmp->override_divm_shift) |
|
|
~(divn_mask(pll) << div_nmp->override_divn_shift);
|
|
val |= (cfg->m << div_nmp->override_divm_shift) |
|
|
(cfg->n << div_nmp->override_divn_shift);
|
|
pll_override_writel(val, params->pmc_divnm_reg, pll);
|
|
} else {
|
|
val = pll_readl_base(pll);
|
|
|
|
val &= ~(divm_mask_shifted(pll) | divn_mask_shifted(pll) |
|
|
divp_mask_shifted(pll));
|
|
|
|
val |= (cfg->m << divm_shift(pll)) |
|
|
(cfg->n << divn_shift(pll)) |
|
|
(cfg->p << divp_shift(pll));
|
|
|
|
pll_writel_base(val, pll);
|
|
}
|
|
}
|
|
|
|
static void _get_pll_mnp(struct tegra_clk_pll *pll,
|
|
struct tegra_clk_pll_freq_table *cfg)
|
|
{
|
|
u32 val;
|
|
struct tegra_clk_pll_params *params = pll->params;
|
|
struct div_nmp *div_nmp = params->div_nmp;
|
|
|
|
if ((params->flags & TEGRA_PLLM) &&
|
|
(pll_override_readl(PMC_PLLP_WB0_OVERRIDE, pll) &
|
|
PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE)) {
|
|
val = pll_override_readl(params->pmc_divp_reg, pll);
|
|
cfg->p = (val >> div_nmp->override_divp_shift) & divp_mask(pll);
|
|
|
|
val = pll_override_readl(params->pmc_divnm_reg, pll);
|
|
cfg->m = (val >> div_nmp->override_divm_shift) & divm_mask(pll);
|
|
cfg->n = (val >> div_nmp->override_divn_shift) & divn_mask(pll);
|
|
} else {
|
|
val = pll_readl_base(pll);
|
|
|
|
cfg->m = (val >> div_nmp->divm_shift) & divm_mask(pll);
|
|
cfg->n = (val >> div_nmp->divn_shift) & divn_mask(pll);
|
|
cfg->p = (val >> div_nmp->divp_shift) & divp_mask(pll);
|
|
}
|
|
}
|
|
|
|
static void _update_pll_cpcon(struct tegra_clk_pll *pll,
|
|
struct tegra_clk_pll_freq_table *cfg,
|
|
unsigned long rate)
|
|
{
|
|
u32 val;
|
|
|
|
val = pll_readl_misc(pll);
|
|
|
|
val &= ~(PLL_MISC_CPCON_MASK << PLL_MISC_CPCON_SHIFT);
|
|
val |= cfg->cpcon << PLL_MISC_CPCON_SHIFT;
|
|
|
|
if (pll->params->flags & TEGRA_PLL_SET_LFCON) {
|
|
val &= ~(PLL_MISC_LFCON_MASK << PLL_MISC_LFCON_SHIFT);
|
|
if (cfg->n >= PLLDU_LFCON_SET_DIVN)
|
|
val |= 1 << PLL_MISC_LFCON_SHIFT;
|
|
} else if (pll->params->flags & TEGRA_PLL_SET_DCCON) {
|
|
val &= ~(1 << PLL_MISC_DCCON_SHIFT);
|
|
if (rate >= (pll->params->vco_max >> 1))
|
|
val |= 1 << PLL_MISC_DCCON_SHIFT;
|
|
}
|
|
|
|
pll_writel_misc(val, pll);
|
|
}
|
|
|
|
static int _program_pll(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg,
|
|
unsigned long rate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
int state, ret = 0;
|
|
|
|
state = clk_pll_is_enabled(hw);
|
|
|
|
if (state)
|
|
_clk_pll_disable(hw);
|
|
|
|
_update_pll_mnp(pll, cfg);
|
|
|
|
if (pll->params->flags & TEGRA_PLL_HAS_CPCON)
|
|
_update_pll_cpcon(pll, cfg, rate);
|
|
|
|
if (state) {
|
|
_clk_pll_enable(hw);
|
|
ret = clk_pll_wait_for_lock(pll);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
struct tegra_clk_pll_freq_table cfg, old_cfg;
|
|
unsigned long flags = 0;
|
|
int ret = 0;
|
|
|
|
if (pll->params->flags & TEGRA_PLL_FIXED) {
|
|
if (rate != pll->params->fixed_rate) {
|
|
pr_err("%s: Can not change %s fixed rate %lu to %lu\n",
|
|
__func__, clk_hw_get_name(hw),
|
|
pll->params->fixed_rate, rate);
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (_get_table_rate(hw, &cfg, rate, parent_rate) &&
|
|
_calc_rate(hw, &cfg, rate, parent_rate)) {
|
|
pr_err("%s: Failed to set %s rate %lu\n", __func__,
|
|
clk_hw_get_name(hw), rate);
|
|
WARN_ON(1);
|
|
return -EINVAL;
|
|
}
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
_get_pll_mnp(pll, &old_cfg);
|
|
|
|
if (old_cfg.m != cfg.m || old_cfg.n != cfg.n || old_cfg.p != cfg.p)
|
|
ret = _program_pll(hw, &cfg, rate);
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long *prate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
struct tegra_clk_pll_freq_table cfg;
|
|
|
|
if (pll->params->flags & TEGRA_PLL_FIXED)
|
|
return pll->params->fixed_rate;
|
|
|
|
/* PLLM is used for memory; we do not change rate */
|
|
if (pll->params->flags & TEGRA_PLLM)
|
|
return clk_hw_get_rate(hw);
|
|
|
|
if (_get_table_rate(hw, &cfg, rate, *prate) &&
|
|
_calc_rate(hw, &cfg, rate, *prate))
|
|
return -EINVAL;
|
|
|
|
return cfg.output_rate;
|
|
}
|
|
|
|
static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
struct tegra_clk_pll_freq_table cfg;
|
|
u32 val;
|
|
u64 rate = parent_rate;
|
|
int pdiv;
|
|
|
|
val = pll_readl_base(pll);
|
|
|
|
if ((pll->params->flags & TEGRA_PLL_BYPASS) && (val & PLL_BASE_BYPASS))
|
|
return parent_rate;
|
|
|
|
if ((pll->params->flags & TEGRA_PLL_FIXED) &&
|
|
!(val & PLL_BASE_OVERRIDE)) {
|
|
struct tegra_clk_pll_freq_table sel;
|
|
if (_get_table_rate(hw, &sel, pll->params->fixed_rate,
|
|
parent_rate)) {
|
|
pr_err("Clock %s has unknown fixed frequency\n",
|
|
clk_hw_get_name(hw));
|
|
BUG();
|
|
}
|
|
return pll->params->fixed_rate;
|
|
}
|
|
|
|
_get_pll_mnp(pll, &cfg);
|
|
|
|
pdiv = _hw_to_p_div(hw, cfg.p);
|
|
if (pdiv < 0) {
|
|
WARN_ON(1);
|
|
pdiv = 1;
|
|
}
|
|
|
|
cfg.m *= pdiv;
|
|
|
|
rate *= cfg.n;
|
|
do_div(rate, cfg.m);
|
|
|
|
return rate;
|
|
}
|
|
|
|
static int clk_plle_training(struct tegra_clk_pll *pll)
|
|
{
|
|
u32 val;
|
|
unsigned long timeout;
|
|
|
|
if (!pll->pmc)
|
|
return -ENOSYS;
|
|
|
|
/*
|
|
* PLLE is already disabled, and setup cleared;
|
|
* create falling edge on PLLE IDDQ input.
|
|
*/
|
|
val = readl(pll->pmc + PMC_SATA_PWRGT);
|
|
val |= PMC_SATA_PWRGT_PLLE_IDDQ_VALUE;
|
|
writel(val, pll->pmc + PMC_SATA_PWRGT);
|
|
|
|
val = readl(pll->pmc + PMC_SATA_PWRGT);
|
|
val |= PMC_SATA_PWRGT_PLLE_IDDQ_SWCTL;
|
|
writel(val, pll->pmc + PMC_SATA_PWRGT);
|
|
|
|
val = readl(pll->pmc + PMC_SATA_PWRGT);
|
|
val &= ~PMC_SATA_PWRGT_PLLE_IDDQ_VALUE;
|
|
writel(val, pll->pmc + PMC_SATA_PWRGT);
|
|
|
|
val = pll_readl_misc(pll);
|
|
|
|
timeout = jiffies + msecs_to_jiffies(100);
|
|
while (1) {
|
|
val = pll_readl_misc(pll);
|
|
if (val & PLLE_MISC_READY)
|
|
break;
|
|
if (time_after(jiffies, timeout)) {
|
|
pr_err("%s: timeout waiting for PLLE\n", __func__);
|
|
return -EBUSY;
|
|
}
|
|
udelay(300);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int clk_plle_enable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long input_rate = clk_get_rate(clk_get_parent(hw->clk));
|
|
struct tegra_clk_pll_freq_table sel;
|
|
u32 val;
|
|
int err;
|
|
|
|
if (_get_table_rate(hw, &sel, pll->params->fixed_rate, input_rate))
|
|
return -EINVAL;
|
|
|
|
clk_pll_disable(hw);
|
|
|
|
val = pll_readl_misc(pll);
|
|
val &= ~(PLLE_MISC_LOCK_ENABLE | PLLE_MISC_SETUP_MASK);
|
|
pll_writel_misc(val, pll);
|
|
|
|
val = pll_readl_misc(pll);
|
|
if (!(val & PLLE_MISC_READY)) {
|
|
err = clk_plle_training(pll);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (pll->params->flags & TEGRA_PLLE_CONFIGURE) {
|
|
/* configure dividers */
|
|
val = pll_readl_base(pll);
|
|
val &= ~(divp_mask_shifted(pll) | divn_mask_shifted(pll) |
|
|
divm_mask_shifted(pll));
|
|
val &= ~(PLLE_BASE_DIVCML_MASK << PLLE_BASE_DIVCML_SHIFT);
|
|
val |= sel.m << divm_shift(pll);
|
|
val |= sel.n << divn_shift(pll);
|
|
val |= sel.p << divp_shift(pll);
|
|
val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT;
|
|
pll_writel_base(val, pll);
|
|
}
|
|
|
|
val = pll_readl_misc(pll);
|
|
val |= PLLE_MISC_SETUP_VALUE;
|
|
val |= PLLE_MISC_LOCK_ENABLE;
|
|
pll_writel_misc(val, pll);
|
|
|
|
val = readl(pll->clk_base + PLLE_SS_CTRL);
|
|
val &= ~PLLE_SS_COEFFICIENTS_MASK;
|
|
val |= PLLE_SS_DISABLE;
|
|
writel(val, pll->clk_base + PLLE_SS_CTRL);
|
|
|
|
val = pll_readl_base(pll);
|
|
val |= (PLL_BASE_BYPASS | PLL_BASE_ENABLE);
|
|
pll_writel_base(val, pll);
|
|
|
|
clk_pll_wait_for_lock(pll);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long clk_plle_recalc_rate(struct clk_hw *hw,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
u32 val = pll_readl_base(pll);
|
|
u32 divn = 0, divm = 0, divp = 0;
|
|
u64 rate = parent_rate;
|
|
|
|
divp = (val >> pll->params->div_nmp->divp_shift) & (divp_mask(pll));
|
|
divn = (val >> pll->params->div_nmp->divn_shift) & (divn_mask(pll));
|
|
divm = (val >> pll->params->div_nmp->divm_shift) & (divm_mask(pll));
|
|
divm *= divp;
|
|
|
|
rate *= divn;
|
|
do_div(rate, divm);
|
|
return rate;
|
|
}
|
|
|
|
const struct clk_ops tegra_clk_pll_ops = {
|
|
.is_enabled = clk_pll_is_enabled,
|
|
.enable = clk_pll_enable,
|
|
.disable = clk_pll_disable,
|
|
.recalc_rate = clk_pll_recalc_rate,
|
|
.round_rate = clk_pll_round_rate,
|
|
.set_rate = clk_pll_set_rate,
|
|
};
|
|
|
|
const struct clk_ops tegra_clk_plle_ops = {
|
|
.recalc_rate = clk_plle_recalc_rate,
|
|
.is_enabled = clk_pll_is_enabled,
|
|
.disable = clk_pll_disable,
|
|
.enable = clk_plle_enable,
|
|
};
|
|
|
|
#if defined(CONFIG_ARCH_TEGRA_114_SOC) || \
|
|
defined(CONFIG_ARCH_TEGRA_124_SOC) || \
|
|
defined(CONFIG_ARCH_TEGRA_132_SOC)
|
|
|
|
static int _pll_fixed_mdiv(struct tegra_clk_pll_params *pll_params,
|
|
unsigned long parent_rate)
|
|
{
|
|
if (parent_rate > pll_params->cf_max)
|
|
return 2;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
static unsigned long _clip_vco_min(unsigned long vco_min,
|
|
unsigned long parent_rate)
|
|
{
|
|
return DIV_ROUND_UP(vco_min, parent_rate) * parent_rate;
|
|
}
|
|
|
|
static int _setup_dynamic_ramp(struct tegra_clk_pll_params *pll_params,
|
|
void __iomem *clk_base,
|
|
unsigned long parent_rate)
|
|
{
|
|
u32 val;
|
|
u32 step_a, step_b;
|
|
|
|
switch (parent_rate) {
|
|
case 12000000:
|
|
case 13000000:
|
|
case 26000000:
|
|
step_a = 0x2B;
|
|
step_b = 0x0B;
|
|
break;
|
|
case 16800000:
|
|
step_a = 0x1A;
|
|
step_b = 0x09;
|
|
break;
|
|
case 19200000:
|
|
step_a = 0x12;
|
|
step_b = 0x08;
|
|
break;
|
|
default:
|
|
pr_err("%s: Unexpected reference rate %lu\n",
|
|
__func__, parent_rate);
|
|
WARN_ON(1);
|
|
return -EINVAL;
|
|
}
|
|
|
|
val = step_a << pll_params->stepa_shift;
|
|
val |= step_b << pll_params->stepb_shift;
|
|
writel_relaxed(val, clk_base + pll_params->dyn_ramp_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int clk_pll_iddq_enable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long flags = 0;
|
|
|
|
u32 val;
|
|
int ret;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
val = pll_readl(pll->params->iddq_reg, pll);
|
|
val &= ~BIT(pll->params->iddq_bit_idx);
|
|
pll_writel(val, pll->params->iddq_reg, pll);
|
|
udelay(2);
|
|
|
|
_clk_pll_enable(hw);
|
|
|
|
ret = clk_pll_wait_for_lock(pll);
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void clk_pll_iddq_disable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long flags = 0;
|
|
u32 val;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
_clk_pll_disable(hw);
|
|
|
|
val = pll_readl(pll->params->iddq_reg, pll);
|
|
val |= BIT(pll->params->iddq_bit_idx);
|
|
pll_writel(val, pll->params->iddq_reg, pll);
|
|
udelay(2);
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
}
|
|
|
|
static int _calc_dynamic_ramp_rate(struct clk_hw *hw,
|
|
struct tegra_clk_pll_freq_table *cfg,
|
|
unsigned long rate, unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned int p;
|
|
int p_div;
|
|
|
|
if (!rate)
|
|
return -EINVAL;
|
|
|
|
p = DIV_ROUND_UP(pll->params->vco_min, rate);
|
|
cfg->m = _pll_fixed_mdiv(pll->params, parent_rate);
|
|
cfg->output_rate = rate * p;
|
|
cfg->n = cfg->output_rate * cfg->m / parent_rate;
|
|
|
|
p_div = _p_div_to_hw(hw, p);
|
|
if (p_div < 0)
|
|
return p_div;
|
|
else
|
|
cfg->p = p_div;
|
|
|
|
if (cfg->n > divn_max(pll) || cfg->output_rate > pll->params->vco_max)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int _pll_ramp_calc_pll(struct clk_hw *hw,
|
|
struct tegra_clk_pll_freq_table *cfg,
|
|
unsigned long rate, unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
int err = 0, p_div;
|
|
|
|
err = _get_table_rate(hw, cfg, rate, parent_rate);
|
|
if (err < 0)
|
|
err = _calc_dynamic_ramp_rate(hw, cfg, rate, parent_rate);
|
|
else {
|
|
if (cfg->m != _pll_fixed_mdiv(pll->params, parent_rate)) {
|
|
WARN_ON(1);
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
p_div = _p_div_to_hw(hw, cfg->p);
|
|
if (p_div < 0)
|
|
return p_div;
|
|
else
|
|
cfg->p = p_div;
|
|
}
|
|
|
|
if (cfg->p > pll->params->max_p)
|
|
err = -EINVAL;
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int clk_pllxc_set_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
struct tegra_clk_pll_freq_table cfg, old_cfg;
|
|
unsigned long flags = 0;
|
|
int ret;
|
|
|
|
ret = _pll_ramp_calc_pll(hw, &cfg, rate, parent_rate);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
_get_pll_mnp(pll, &old_cfg);
|
|
|
|
if (old_cfg.m != cfg.m || old_cfg.n != cfg.n || old_cfg.p != cfg.p)
|
|
ret = _program_pll(hw, &cfg, rate);
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static long clk_pll_ramp_round_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long *prate)
|
|
{
|
|
struct tegra_clk_pll_freq_table cfg;
|
|
int ret, p_div;
|
|
u64 output_rate = *prate;
|
|
|
|
ret = _pll_ramp_calc_pll(hw, &cfg, rate, *prate);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
p_div = _hw_to_p_div(hw, cfg.p);
|
|
if (p_div < 0)
|
|
return p_div;
|
|
|
|
output_rate *= cfg.n;
|
|
do_div(output_rate, cfg.m * p_div);
|
|
|
|
return output_rate;
|
|
}
|
|
|
|
static int clk_pllm_set_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll_freq_table cfg;
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long flags = 0;
|
|
int state, ret = 0;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
state = clk_pll_is_enabled(hw);
|
|
if (state) {
|
|
if (rate != clk_get_rate(hw->clk)) {
|
|
pr_err("%s: Cannot change active PLLM\n", __func__);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
ret = _pll_ramp_calc_pll(hw, &cfg, rate, parent_rate);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
_update_pll_mnp(pll, &cfg);
|
|
|
|
out:
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void _pllcx_strobe(struct tegra_clk_pll *pll)
|
|
{
|
|
u32 val;
|
|
|
|
val = pll_readl_misc(pll);
|
|
val |= PLLCX_MISC_STROBE;
|
|
pll_writel_misc(val, pll);
|
|
udelay(2);
|
|
|
|
val &= ~PLLCX_MISC_STROBE;
|
|
pll_writel_misc(val, pll);
|
|
}
|
|
|
|
static int clk_pllc_enable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
u32 val;
|
|
int ret;
|
|
unsigned long flags = 0;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
_clk_pll_enable(hw);
|
|
udelay(2);
|
|
|
|
val = pll_readl_misc(pll);
|
|
val &= ~PLLCX_MISC_RESET;
|
|
pll_writel_misc(val, pll);
|
|
udelay(2);
|
|
|
|
_pllcx_strobe(pll);
|
|
|
|
ret = clk_pll_wait_for_lock(pll);
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void _clk_pllc_disable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
u32 val;
|
|
|
|
_clk_pll_disable(hw);
|
|
|
|
val = pll_readl_misc(pll);
|
|
val |= PLLCX_MISC_RESET;
|
|
pll_writel_misc(val, pll);
|
|
udelay(2);
|
|
}
|
|
|
|
static void clk_pllc_disable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long flags = 0;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
_clk_pllc_disable(hw);
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
}
|
|
|
|
static int _pllcx_update_dynamic_coef(struct tegra_clk_pll *pll,
|
|
unsigned long input_rate, u32 n)
|
|
{
|
|
u32 val, n_threshold;
|
|
|
|
switch (input_rate) {
|
|
case 12000000:
|
|
n_threshold = 70;
|
|
break;
|
|
case 13000000:
|
|
case 26000000:
|
|
n_threshold = 71;
|
|
break;
|
|
case 16800000:
|
|
n_threshold = 55;
|
|
break;
|
|
case 19200000:
|
|
n_threshold = 48;
|
|
break;
|
|
default:
|
|
pr_err("%s: Unexpected reference rate %lu\n",
|
|
__func__, input_rate);
|
|
return -EINVAL;
|
|
}
|
|
|
|
val = pll_readl_misc(pll);
|
|
val &= ~(PLLCX_MISC_SDM_DIV_MASK | PLLCX_MISC_FILT_DIV_MASK);
|
|
val |= n <= n_threshold ?
|
|
PLLCX_MISC_DIV_LOW_RANGE : PLLCX_MISC_DIV_HIGH_RANGE;
|
|
pll_writel_misc(val, pll);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int clk_pllc_set_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll_freq_table cfg, old_cfg;
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long flags = 0;
|
|
int state, ret = 0;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
ret = _pll_ramp_calc_pll(hw, &cfg, rate, parent_rate);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
_get_pll_mnp(pll, &old_cfg);
|
|
|
|
if (cfg.m != old_cfg.m) {
|
|
WARN_ON(1);
|
|
goto out;
|
|
}
|
|
|
|
if (old_cfg.n == cfg.n && old_cfg.p == cfg.p)
|
|
goto out;
|
|
|
|
state = clk_pll_is_enabled(hw);
|
|
if (state)
|
|
_clk_pllc_disable(hw);
|
|
|
|
ret = _pllcx_update_dynamic_coef(pll, parent_rate, cfg.n);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
_update_pll_mnp(pll, &cfg);
|
|
|
|
if (state)
|
|
ret = clk_pllc_enable(hw);
|
|
|
|
out:
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static long _pllre_calc_rate(struct tegra_clk_pll *pll,
|
|
struct tegra_clk_pll_freq_table *cfg,
|
|
unsigned long rate, unsigned long parent_rate)
|
|
{
|
|
u16 m, n;
|
|
u64 output_rate = parent_rate;
|
|
|
|
m = _pll_fixed_mdiv(pll->params, parent_rate);
|
|
n = rate * m / parent_rate;
|
|
|
|
output_rate *= n;
|
|
do_div(output_rate, m);
|
|
|
|
if (cfg) {
|
|
cfg->m = m;
|
|
cfg->n = n;
|
|
}
|
|
|
|
return output_rate;
|
|
}
|
|
|
|
static int clk_pllre_set_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll_freq_table cfg, old_cfg;
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long flags = 0;
|
|
int state, ret = 0;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
_pllre_calc_rate(pll, &cfg, rate, parent_rate);
|
|
_get_pll_mnp(pll, &old_cfg);
|
|
cfg.p = old_cfg.p;
|
|
|
|
if (cfg.m != old_cfg.m || cfg.n != old_cfg.n) {
|
|
state = clk_pll_is_enabled(hw);
|
|
if (state)
|
|
_clk_pll_disable(hw);
|
|
|
|
_update_pll_mnp(pll, &cfg);
|
|
|
|
if (state) {
|
|
_clk_pll_enable(hw);
|
|
ret = clk_pll_wait_for_lock(pll);
|
|
}
|
|
}
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static unsigned long clk_pllre_recalc_rate(struct clk_hw *hw,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct tegra_clk_pll_freq_table cfg;
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
u64 rate = parent_rate;
|
|
|
|
_get_pll_mnp(pll, &cfg);
|
|
|
|
rate *= cfg.n;
|
|
do_div(rate, cfg.m);
|
|
|
|
return rate;
|
|
}
|
|
|
|
static long clk_pllre_round_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long *prate)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
|
|
return _pllre_calc_rate(pll, NULL, rate, *prate);
|
|
}
|
|
|
|
static int clk_plle_tegra114_enable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
struct tegra_clk_pll_freq_table sel;
|
|
u32 val;
|
|
int ret;
|
|
unsigned long flags = 0;
|
|
unsigned long input_rate = clk_get_rate(clk_get_parent(hw->clk));
|
|
|
|
if (_get_table_rate(hw, &sel, pll->params->fixed_rate, input_rate))
|
|
return -EINVAL;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
val = pll_readl_base(pll);
|
|
val &= ~BIT(29); /* Disable lock override */
|
|
pll_writel_base(val, pll);
|
|
|
|
val = pll_readl(pll->params->aux_reg, pll);
|
|
val |= PLLE_AUX_ENABLE_SWCTL;
|
|
val &= ~PLLE_AUX_SEQ_ENABLE;
|
|
pll_writel(val, pll->params->aux_reg, pll);
|
|
udelay(1);
|
|
|
|
val = pll_readl_misc(pll);
|
|
val |= PLLE_MISC_LOCK_ENABLE;
|
|
val |= PLLE_MISC_IDDQ_SW_CTRL;
|
|
val &= ~PLLE_MISC_IDDQ_SW_VALUE;
|
|
val |= PLLE_MISC_PLLE_PTS;
|
|
val |= PLLE_MISC_VREG_BG_CTRL_MASK | PLLE_MISC_VREG_CTRL_MASK;
|
|
pll_writel_misc(val, pll);
|
|
udelay(5);
|
|
|
|
val = pll_readl(PLLE_SS_CTRL, pll);
|
|
val |= PLLE_SS_DISABLE;
|
|
pll_writel(val, PLLE_SS_CTRL, pll);
|
|
|
|
val = pll_readl_base(pll);
|
|
val &= ~(divp_mask_shifted(pll) | divn_mask_shifted(pll) |
|
|
divm_mask_shifted(pll));
|
|
val &= ~(PLLE_BASE_DIVCML_MASK << PLLE_BASE_DIVCML_SHIFT);
|
|
val |= sel.m << divm_shift(pll);
|
|
val |= sel.n << divn_shift(pll);
|
|
val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT;
|
|
pll_writel_base(val, pll);
|
|
udelay(1);
|
|
|
|
_clk_pll_enable(hw);
|
|
ret = clk_pll_wait_for_lock(pll);
|
|
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
val = pll_readl(PLLE_SS_CTRL, pll);
|
|
val &= ~(PLLE_SS_CNTL_CENTER | PLLE_SS_CNTL_INVERT);
|
|
val &= ~PLLE_SS_COEFFICIENTS_MASK;
|
|
val |= PLLE_SS_COEFFICIENTS_VAL;
|
|
pll_writel(val, PLLE_SS_CTRL, pll);
|
|
val &= ~(PLLE_SS_CNTL_SSC_BYP | PLLE_SS_CNTL_BYPASS_SS);
|
|
pll_writel(val, PLLE_SS_CTRL, pll);
|
|
udelay(1);
|
|
val &= ~PLLE_SS_CNTL_INTERP_RESET;
|
|
pll_writel(val, PLLE_SS_CTRL, pll);
|
|
udelay(1);
|
|
|
|
/* Enable hw control of xusb brick pll */
|
|
val = pll_readl_misc(pll);
|
|
val &= ~PLLE_MISC_IDDQ_SW_CTRL;
|
|
pll_writel_misc(val, pll);
|
|
|
|
val = pll_readl(pll->params->aux_reg, pll);
|
|
val |= (PLLE_AUX_USE_LOCKDET | PLLE_AUX_SEQ_START_STATE);
|
|
val &= ~(PLLE_AUX_ENABLE_SWCTL | PLLE_AUX_SS_SWCTL);
|
|
pll_writel(val, pll->params->aux_reg, pll);
|
|
udelay(1);
|
|
val |= PLLE_AUX_SEQ_ENABLE;
|
|
pll_writel(val, pll->params->aux_reg, pll);
|
|
|
|
val = pll_readl(XUSBIO_PLL_CFG0, pll);
|
|
val |= (XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET |
|
|
XUSBIO_PLL_CFG0_SEQ_START_STATE);
|
|
val &= ~(XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL |
|
|
XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL);
|
|
pll_writel(val, XUSBIO_PLL_CFG0, pll);
|
|
udelay(1);
|
|
val |= XUSBIO_PLL_CFG0_SEQ_ENABLE;
|
|
pll_writel(val, XUSBIO_PLL_CFG0, pll);
|
|
|
|
/* Enable hw control of SATA pll */
|
|
val = pll_readl(SATA_PLL_CFG0, pll);
|
|
val &= ~SATA_PLL_CFG0_PADPLL_RESET_SWCTL;
|
|
val |= SATA_PLL_CFG0_PADPLL_USE_LOCKDET;
|
|
val |= SATA_PLL_CFG0_SEQ_START_STATE;
|
|
pll_writel(val, SATA_PLL_CFG0, pll);
|
|
|
|
udelay(1);
|
|
|
|
val = pll_readl(SATA_PLL_CFG0, pll);
|
|
val |= SATA_PLL_CFG0_SEQ_ENABLE;
|
|
pll_writel(val, SATA_PLL_CFG0, pll);
|
|
|
|
out:
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void clk_plle_tegra114_disable(struct clk_hw *hw)
|
|
{
|
|
struct tegra_clk_pll *pll = to_clk_pll(hw);
|
|
unsigned long flags = 0;
|
|
u32 val;
|
|
|
|
if (pll->lock)
|
|
spin_lock_irqsave(pll->lock, flags);
|
|
|
|
_clk_pll_disable(hw);
|
|
|
|
val = pll_readl_misc(pll);
|
|
val |= PLLE_MISC_IDDQ_SW_CTRL | PLLE_MISC_IDDQ_SW_VALUE;
|
|
pll_writel_misc(val, pll);
|
|
udelay(1);
|
|
|
|
if (pll->lock)
|
|
spin_unlock_irqrestore(pll->lock, flags);
|
|
}
|
|
#endif
|
|
|
|
static struct tegra_clk_pll *_tegra_init_pll(void __iomem *clk_base,
|
|
void __iomem *pmc, struct tegra_clk_pll_params *pll_params,
|
|
spinlock_t *lock)
|
|
{
|
|
struct tegra_clk_pll *pll;
|
|
|
|
pll = kzalloc(sizeof(*pll), GFP_KERNEL);
|
|
if (!pll)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
pll->clk_base = clk_base;
|
|
pll->pmc = pmc;
|
|
|
|
pll->params = pll_params;
|
|
pll->lock = lock;
|
|
|
|
if (!pll_params->div_nmp)
|
|
pll_params->div_nmp = &default_nmp;
|
|
|
|
return pll;
|
|
}
|
|
|
|
static struct clk *_tegra_clk_register_pll(struct tegra_clk_pll *pll,
|
|
const char *name, const char *parent_name, unsigned long flags,
|
|
const struct clk_ops *ops)
|
|
{
|
|
struct clk_init_data init;
|
|
|
|
init.name = name;
|
|
init.ops = ops;
|
|
init.flags = flags;
|
|
init.parent_names = (parent_name ? &parent_name : NULL);
|
|
init.num_parents = (parent_name ? 1 : 0);
|
|
|
|
/* Data in .init is copied by clk_register(), so stack variable OK */
|
|
pll->hw.init = &init;
|
|
|
|
return clk_register(NULL, &pll->hw);
|
|
}
|
|
|
|
struct clk *tegra_clk_register_pll(const char *name, const char *parent_name,
|
|
void __iomem *clk_base, void __iomem *pmc,
|
|
unsigned long flags, struct tegra_clk_pll_params *pll_params,
|
|
spinlock_t *lock)
|
|
{
|
|
struct tegra_clk_pll *pll;
|
|
struct clk *clk;
|
|
|
|
pll_params->flags |= TEGRA_PLL_BYPASS;
|
|
pll_params->flags |= TEGRA_PLL_HAS_LOCK_ENABLE;
|
|
pll = _tegra_init_pll(clk_base, pmc, pll_params, lock);
|
|
if (IS_ERR(pll))
|
|
return ERR_CAST(pll);
|
|
|
|
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,
|
|
&tegra_clk_pll_ops);
|
|
if (IS_ERR(clk))
|
|
kfree(pll);
|
|
|
|
return clk;
|
|
}
|
|
|
|
static struct div_nmp pll_e_nmp = {
|
|
.divn_shift = PLLE_BASE_DIVN_SHIFT,
|
|
.divn_width = PLLE_BASE_DIVN_WIDTH,
|
|
.divm_shift = PLLE_BASE_DIVM_SHIFT,
|
|
.divm_width = PLLE_BASE_DIVM_WIDTH,
|
|
.divp_shift = PLLE_BASE_DIVP_SHIFT,
|
|
.divp_width = PLLE_BASE_DIVP_WIDTH,
|
|
};
|
|
|
|
struct clk *tegra_clk_register_plle(const char *name, const char *parent_name,
|
|
void __iomem *clk_base, void __iomem *pmc,
|
|
unsigned long flags, struct tegra_clk_pll_params *pll_params,
|
|
spinlock_t *lock)
|
|
{
|
|
struct tegra_clk_pll *pll;
|
|
struct clk *clk;
|
|
|
|
pll_params->flags |= TEGRA_PLL_LOCK_MISC | TEGRA_PLL_BYPASS;
|
|
pll_params->flags |= TEGRA_PLL_HAS_LOCK_ENABLE;
|
|
|
|
if (!pll_params->div_nmp)
|
|
pll_params->div_nmp = &pll_e_nmp;
|
|
|
|
pll = _tegra_init_pll(clk_base, pmc, pll_params, lock);
|
|
if (IS_ERR(pll))
|
|
return ERR_CAST(pll);
|
|
|
|
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,
|
|
&tegra_clk_plle_ops);
|
|
if (IS_ERR(clk))
|
|
kfree(pll);
|
|
|
|
return clk;
|
|
}
|
|
|
|
#if defined(CONFIG_ARCH_TEGRA_114_SOC) || \
|
|
defined(CONFIG_ARCH_TEGRA_124_SOC) || \
|
|
defined(CONFIG_ARCH_TEGRA_132_SOC)
|
|
static const struct clk_ops tegra_clk_pllxc_ops = {
|
|
.is_enabled = clk_pll_is_enabled,
|
|
.enable = clk_pll_iddq_enable,
|
|
.disable = clk_pll_iddq_disable,
|
|
.recalc_rate = clk_pll_recalc_rate,
|
|
.round_rate = clk_pll_ramp_round_rate,
|
|
.set_rate = clk_pllxc_set_rate,
|
|
};
|
|
|
|
static const struct clk_ops tegra_clk_pllm_ops = {
|
|
.is_enabled = clk_pll_is_enabled,
|
|
.enable = clk_pll_iddq_enable,
|
|
.disable = clk_pll_iddq_disable,
|
|
.recalc_rate = clk_pll_recalc_rate,
|
|
.round_rate = clk_pll_ramp_round_rate,
|
|
.set_rate = clk_pllm_set_rate,
|
|
};
|
|
|
|
static const struct clk_ops tegra_clk_pllc_ops = {
|
|
.is_enabled = clk_pll_is_enabled,
|
|
.enable = clk_pllc_enable,
|
|
.disable = clk_pllc_disable,
|
|
.recalc_rate = clk_pll_recalc_rate,
|
|
.round_rate = clk_pll_ramp_round_rate,
|
|
.set_rate = clk_pllc_set_rate,
|
|
};
|
|
|
|
static const struct clk_ops tegra_clk_pllre_ops = {
|
|
.is_enabled = clk_pll_is_enabled,
|
|
.enable = clk_pll_iddq_enable,
|
|
.disable = clk_pll_iddq_disable,
|
|
.recalc_rate = clk_pllre_recalc_rate,
|
|
.round_rate = clk_pllre_round_rate,
|
|
.set_rate = clk_pllre_set_rate,
|
|
};
|
|
|
|
static const struct clk_ops tegra_clk_plle_tegra114_ops = {
|
|
.is_enabled = clk_pll_is_enabled,
|
|
.enable = clk_plle_tegra114_enable,
|
|
.disable = clk_plle_tegra114_disable,
|
|
.recalc_rate = clk_pll_recalc_rate,
|
|
};
|
|
|
|
|
|
struct clk *tegra_clk_register_pllxc(const char *name, const char *parent_name,
|
|
void __iomem *clk_base, void __iomem *pmc,
|
|
unsigned long flags,
|
|
struct tegra_clk_pll_params *pll_params,
|
|
spinlock_t *lock)
|
|
{
|
|
struct tegra_clk_pll *pll;
|
|
struct clk *clk, *parent;
|
|
unsigned long parent_rate;
|
|
int err;
|
|
u32 val, val_iddq;
|
|
|
|
parent = __clk_lookup(parent_name);
|
|
if (!parent) {
|
|
WARN(1, "parent clk %s of %s must be registered first\n",
|
|
parent_name, name);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
if (!pll_params->pdiv_tohw)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
parent_rate = clk_get_rate(parent);
|
|
|
|
pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate);
|
|
|
|
err = _setup_dynamic_ramp(pll_params, clk_base, parent_rate);
|
|
if (err)
|
|
return ERR_PTR(err);
|
|
|
|
val = readl_relaxed(clk_base + pll_params->base_reg);
|
|
val_iddq = readl_relaxed(clk_base + pll_params->iddq_reg);
|
|
|
|
if (val & PLL_BASE_ENABLE)
|
|
WARN_ON(val_iddq & BIT(pll_params->iddq_bit_idx));
|
|
else {
|
|
val_iddq |= BIT(pll_params->iddq_bit_idx);
|
|
writel_relaxed(val_iddq, clk_base + pll_params->iddq_reg);
|
|
}
|
|
|
|
pll_params->flags |= TEGRA_PLL_HAS_LOCK_ENABLE;
|
|
pll = _tegra_init_pll(clk_base, pmc, pll_params, lock);
|
|
if (IS_ERR(pll))
|
|
return ERR_CAST(pll);
|
|
|
|
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,
|
|
&tegra_clk_pllxc_ops);
|
|
if (IS_ERR(clk))
|
|
kfree(pll);
|
|
|
|
return clk;
|
|
}
|
|
|
|
struct clk *tegra_clk_register_pllre(const char *name, const char *parent_name,
|
|
void __iomem *clk_base, void __iomem *pmc,
|
|
unsigned long flags,
|
|
struct tegra_clk_pll_params *pll_params,
|
|
spinlock_t *lock, unsigned long parent_rate)
|
|
{
|
|
u32 val;
|
|
struct tegra_clk_pll *pll;
|
|
struct clk *clk;
|
|
|
|
pll_params->flags |= TEGRA_PLL_HAS_LOCK_ENABLE | TEGRA_PLL_LOCK_MISC;
|
|
|
|
pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate);
|
|
|
|
pll = _tegra_init_pll(clk_base, pmc, pll_params, lock);
|
|
if (IS_ERR(pll))
|
|
return ERR_CAST(pll);
|
|
|
|
/* program minimum rate by default */
|
|
|
|
val = pll_readl_base(pll);
|
|
if (val & PLL_BASE_ENABLE)
|
|
WARN_ON(val & pll_params->iddq_bit_idx);
|
|
else {
|
|
int m;
|
|
|
|
m = _pll_fixed_mdiv(pll_params, parent_rate);
|
|
val = m << divm_shift(pll);
|
|
val |= (pll_params->vco_min / parent_rate) << divn_shift(pll);
|
|
pll_writel_base(val, pll);
|
|
}
|
|
|
|
/* disable lock override */
|
|
|
|
val = pll_readl_misc(pll);
|
|
val &= ~BIT(29);
|
|
pll_writel_misc(val, pll);
|
|
|
|
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,
|
|
&tegra_clk_pllre_ops);
|
|
if (IS_ERR(clk))
|
|
kfree(pll);
|
|
|
|
return clk;
|
|
}
|
|
|
|
struct clk *tegra_clk_register_pllm(const char *name, const char *parent_name,
|
|
void __iomem *clk_base, void __iomem *pmc,
|
|
unsigned long flags,
|
|
struct tegra_clk_pll_params *pll_params,
|
|
spinlock_t *lock)
|
|
{
|
|
struct tegra_clk_pll *pll;
|
|
struct clk *clk, *parent;
|
|
unsigned long parent_rate;
|
|
|
|
if (!pll_params->pdiv_tohw)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
parent = __clk_lookup(parent_name);
|
|
if (!parent) {
|
|
WARN(1, "parent clk %s of %s must be registered first\n",
|
|
parent_name, name);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
parent_rate = clk_get_rate(parent);
|
|
|
|
pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate);
|
|
|
|
pll_params->flags |= TEGRA_PLL_BYPASS;
|
|
pll_params->flags |= TEGRA_PLL_HAS_LOCK_ENABLE;
|
|
pll_params->flags |= TEGRA_PLLM;
|
|
pll = _tegra_init_pll(clk_base, pmc, pll_params, lock);
|
|
if (IS_ERR(pll))
|
|
return ERR_CAST(pll);
|
|
|
|
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,
|
|
&tegra_clk_pllm_ops);
|
|
if (IS_ERR(clk))
|
|
kfree(pll);
|
|
|
|
return clk;
|
|
}
|
|
|
|
struct clk *tegra_clk_register_pllc(const char *name, const char *parent_name,
|
|
void __iomem *clk_base, void __iomem *pmc,
|
|
unsigned long flags,
|
|
struct tegra_clk_pll_params *pll_params,
|
|
spinlock_t *lock)
|
|
{
|
|
struct clk *parent, *clk;
|
|
struct pdiv_map *p_tohw = pll_params->pdiv_tohw;
|
|
struct tegra_clk_pll *pll;
|
|
struct tegra_clk_pll_freq_table cfg;
|
|
unsigned long parent_rate;
|
|
|
|
if (!p_tohw)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
parent = __clk_lookup(parent_name);
|
|
if (!parent) {
|
|
WARN(1, "parent clk %s of %s must be registered first\n",
|
|
parent_name, name);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
parent_rate = clk_get_rate(parent);
|
|
|
|
pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate);
|
|
|
|
pll_params->flags |= TEGRA_PLL_BYPASS;
|
|
pll = _tegra_init_pll(clk_base, pmc, pll_params, lock);
|
|
if (IS_ERR(pll))
|
|
return ERR_CAST(pll);
|
|
|
|
/*
|
|
* Most of PLLC register fields are shadowed, and can not be read
|
|
* directly from PLL h/w. Hence, actual PLLC boot state is unknown.
|
|
* Initialize PLL to default state: disabled, reset; shadow registers
|
|
* loaded with default parameters; dividers are preset for half of
|
|
* minimum VCO rate (the latter assured that shadowed divider settings
|
|
* are within supported range).
|
|
*/
|
|
|
|
cfg.m = _pll_fixed_mdiv(pll_params, parent_rate);
|
|
cfg.n = cfg.m * pll_params->vco_min / parent_rate;
|
|
|
|
while (p_tohw->pdiv) {
|
|
if (p_tohw->pdiv == 2) {
|
|
cfg.p = p_tohw->hw_val;
|
|
break;
|
|
}
|
|
p_tohw++;
|
|
}
|
|
|
|
if (!p_tohw->pdiv) {
|
|
WARN_ON(1);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
pll_writel_base(0, pll);
|
|
_update_pll_mnp(pll, &cfg);
|
|
|
|
pll_writel_misc(PLLCX_MISC_DEFAULT, pll);
|
|
pll_writel(PLLCX_MISC1_DEFAULT, pll_params->ext_misc_reg[0], pll);
|
|
pll_writel(PLLCX_MISC2_DEFAULT, pll_params->ext_misc_reg[1], pll);
|
|
pll_writel(PLLCX_MISC3_DEFAULT, pll_params->ext_misc_reg[2], pll);
|
|
|
|
_pllcx_update_dynamic_coef(pll, parent_rate, cfg.n);
|
|
|
|
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,
|
|
&tegra_clk_pllc_ops);
|
|
if (IS_ERR(clk))
|
|
kfree(pll);
|
|
|
|
return clk;
|
|
}
|
|
|
|
struct clk *tegra_clk_register_plle_tegra114(const char *name,
|
|
const char *parent_name,
|
|
void __iomem *clk_base, unsigned long flags,
|
|
struct tegra_clk_pll_params *pll_params,
|
|
spinlock_t *lock)
|
|
{
|
|
struct tegra_clk_pll *pll;
|
|
struct clk *clk;
|
|
u32 val, val_aux;
|
|
|
|
pll_params->flags |= TEGRA_PLL_HAS_LOCK_ENABLE;
|
|
pll = _tegra_init_pll(clk_base, NULL, pll_params, lock);
|
|
if (IS_ERR(pll))
|
|
return ERR_CAST(pll);
|
|
|
|
/* ensure parent is set to pll_re_vco */
|
|
|
|
val = pll_readl_base(pll);
|
|
val_aux = pll_readl(pll_params->aux_reg, pll);
|
|
|
|
if (val & PLL_BASE_ENABLE) {
|
|
if ((val_aux & PLLE_AUX_PLLRE_SEL) ||
|
|
(val_aux & PLLE_AUX_PLLP_SEL))
|
|
WARN(1, "pll_e enabled with unsupported parent %s\n",
|
|
(val_aux & PLLE_AUX_PLLP_SEL) ? "pllp_out0" :
|
|
"pll_re_vco");
|
|
} else {
|
|
val_aux &= ~(PLLE_AUX_PLLRE_SEL | PLLE_AUX_PLLP_SEL);
|
|
pll_writel(val_aux, pll_params->aux_reg, pll);
|
|
}
|
|
|
|
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,
|
|
&tegra_clk_plle_tegra114_ops);
|
|
if (IS_ERR(clk))
|
|
kfree(pll);
|
|
|
|
return clk;
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
|
|
static const struct clk_ops tegra_clk_pllss_ops = {
|
|
.is_enabled = clk_pll_is_enabled,
|
|
.enable = clk_pll_iddq_enable,
|
|
.disable = clk_pll_iddq_disable,
|
|
.recalc_rate = clk_pll_recalc_rate,
|
|
.round_rate = clk_pll_ramp_round_rate,
|
|
.set_rate = clk_pllxc_set_rate,
|
|
};
|
|
|
|
struct clk *tegra_clk_register_pllss(const char *name, const char *parent_name,
|
|
void __iomem *clk_base, unsigned long flags,
|
|
struct tegra_clk_pll_params *pll_params,
|
|
spinlock_t *lock)
|
|
{
|
|
struct tegra_clk_pll *pll;
|
|
struct clk *clk, *parent;
|
|
struct tegra_clk_pll_freq_table cfg;
|
|
unsigned long parent_rate;
|
|
u32 val;
|
|
int i;
|
|
|
|
if (!pll_params->div_nmp)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
parent = __clk_lookup(parent_name);
|
|
if (!parent) {
|
|
WARN(1, "parent clk %s of %s must be registered first\n",
|
|
parent_name, name);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
pll_params->flags = TEGRA_PLL_HAS_LOCK_ENABLE | TEGRA_PLL_USE_LOCK;
|
|
pll = _tegra_init_pll(clk_base, NULL, pll_params, lock);
|
|
if (IS_ERR(pll))
|
|
return ERR_CAST(pll);
|
|
|
|
val = pll_readl_base(pll);
|
|
val &= ~PLLSS_REF_SRC_SEL_MASK;
|
|
pll_writel_base(val, pll);
|
|
|
|
parent_rate = clk_get_rate(parent);
|
|
|
|
pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate);
|
|
|
|
/* initialize PLL to minimum rate */
|
|
|
|
cfg.m = _pll_fixed_mdiv(pll_params, parent_rate);
|
|
cfg.n = cfg.m * pll_params->vco_min / parent_rate;
|
|
|
|
for (i = 0; pll_params->pdiv_tohw[i].pdiv; i++)
|
|
;
|
|
if (!i) {
|
|
kfree(pll);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
cfg.p = pll_params->pdiv_tohw[i-1].hw_val;
|
|
|
|
_update_pll_mnp(pll, &cfg);
|
|
|
|
pll_writel_misc(PLLSS_MISC_DEFAULT, pll);
|
|
pll_writel(PLLSS_CFG_DEFAULT, pll_params->ext_misc_reg[0], pll);
|
|
pll_writel(PLLSS_CTRL1_DEFAULT, pll_params->ext_misc_reg[1], pll);
|
|
pll_writel(PLLSS_CTRL1_DEFAULT, pll_params->ext_misc_reg[2], pll);
|
|
|
|
val = pll_readl_base(pll);
|
|
if (val & PLL_BASE_ENABLE) {
|
|
if (val & BIT(pll_params->iddq_bit_idx)) {
|
|
WARN(1, "%s is on but IDDQ set\n", name);
|
|
kfree(pll);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
} else
|
|
val |= BIT(pll_params->iddq_bit_idx);
|
|
|
|
val &= ~PLLSS_LOCK_OVERRIDE;
|
|
pll_writel_base(val, pll);
|
|
|
|
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,
|
|
&tegra_clk_pllss_ops);
|
|
|
|
if (IS_ERR(clk))
|
|
kfree(pll);
|
|
|
|
return clk;
|
|
}
|
|
#endif
|