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alistair23-linux/drivers/clk/renesas/r8a77965-cpg-mssr.c
Geert Uytterhoeven 979a2298a5 clk: renesas: r8a77965: Add OSC EXTAL predivider configuration 
R-Car Gen3 Hardware Manual Rev.0.52 documents the relation between the
MD13 and MD14 mode pins, and the OSC EXTAL predivider, as used by the
OSC and RINT RCLK clocks.  Hence augment the configuration structure
with all documented predivider values.

According to R-Car Gen3 Hardware Manual Rev.1.00, R-Car M3-N does not
have the CPG_RCKCR register.  Change the OSC and RINT clock definitions
to use the OSC EXTAL predivider instead, which is supported on all R-Car
M3-N SoC revisions.

Inspired by a patch in the BSP by Takeshi Kihara
<takeshi.kihara.df@renesas.com>.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2018-08-27 17:00:18 +02:00

340 lines
12 KiB
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// SPDX-License-Identifier: GPL-2.0
/*
* r8a77965 Clock Pulse Generator / Module Standby and Software Reset
*
* Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
*
* Based on r8a7795-cpg-mssr.c
*
* Copyright (C) 2015 Glider bvba
* Copyright (C) 2015 Renesas Electronics Corp.
*/
#include <linux/device.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/soc/renesas/rcar-rst.h>
#include <dt-bindings/clock/r8a77965-cpg-mssr.h>
#include "renesas-cpg-mssr.h"
#include "rcar-gen3-cpg.h"
enum clk_ids {
/* Core Clock Outputs exported to DT */
LAST_DT_CORE_CLK = R8A77965_CLK_OSC,
/* External Input Clocks */
CLK_EXTAL,
CLK_EXTALR,
/* Internal Core Clocks */
CLK_MAIN,
CLK_PLL0,
CLK_PLL1,
CLK_PLL3,
CLK_PLL4,
CLK_PLL1_DIV2,
CLK_PLL1_DIV4,
CLK_S0,
CLK_S1,
CLK_S2,
CLK_S3,
CLK_SDSRC,
CLK_SSPSRC,
CLK_RINT,
/* Module Clocks */
MOD_CLK_BASE
};
static const struct cpg_core_clk r8a77965_core_clks[] __initconst = {
/* External Clock Inputs */
DEF_INPUT("extal", CLK_EXTAL),
DEF_INPUT("extalr", CLK_EXTALR),
/* Internal Core Clocks */
DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL),
DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN),
DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),
DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN),
DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 3, 1),
DEF_FIXED(".s2", CLK_S2, CLK_PLL1_DIV2, 4, 1),
DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 6, 1),
DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1_DIV2, 2, 1),
DEF_GEN3_OSC(".r", CLK_RINT, CLK_EXTAL, 32),
/* Core Clock Outputs */
DEF_BASE("z", R8A77965_CLK_Z, CLK_TYPE_GEN3_Z, CLK_PLL0),
DEF_FIXED("ztr", R8A77965_CLK_ZTR, CLK_PLL1_DIV2, 6, 1),
DEF_FIXED("ztrd2", R8A77965_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
DEF_FIXED("zt", R8A77965_CLK_ZT, CLK_PLL1_DIV2, 4, 1),
DEF_FIXED("zx", R8A77965_CLK_ZX, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED("s0d1", R8A77965_CLK_S0D1, CLK_S0, 1, 1),
DEF_FIXED("s0d2", R8A77965_CLK_S0D2, CLK_S0, 2, 1),
DEF_FIXED("s0d3", R8A77965_CLK_S0D3, CLK_S0, 3, 1),
DEF_FIXED("s0d4", R8A77965_CLK_S0D4, CLK_S0, 4, 1),
DEF_FIXED("s0d6", R8A77965_CLK_S0D6, CLK_S0, 6, 1),
DEF_FIXED("s0d8", R8A77965_CLK_S0D8, CLK_S0, 8, 1),
DEF_FIXED("s0d12", R8A77965_CLK_S0D12, CLK_S0, 12, 1),
DEF_FIXED("s1d1", R8A77965_CLK_S1D1, CLK_S1, 1, 1),
DEF_FIXED("s1d2", R8A77965_CLK_S1D2, CLK_S1, 2, 1),
DEF_FIXED("s1d4", R8A77965_CLK_S1D4, CLK_S1, 4, 1),
DEF_FIXED("s2d1", R8A77965_CLK_S2D1, CLK_S2, 1, 1),
DEF_FIXED("s2d2", R8A77965_CLK_S2D2, CLK_S2, 2, 1),
DEF_FIXED("s2d4", R8A77965_CLK_S2D4, CLK_S2, 4, 1),
DEF_FIXED("s3d1", R8A77965_CLK_S3D1, CLK_S3, 1, 1),
DEF_FIXED("s3d2", R8A77965_CLK_S3D2, CLK_S3, 2, 1),
DEF_FIXED("s3d4", R8A77965_CLK_S3D4, CLK_S3, 4, 1),
DEF_GEN3_SD("sd0", R8A77965_CLK_SD0, CLK_SDSRC, 0x074),
DEF_GEN3_SD("sd1", R8A77965_CLK_SD1, CLK_SDSRC, 0x078),
DEF_GEN3_SD("sd2", R8A77965_CLK_SD2, CLK_SDSRC, 0x268),
DEF_GEN3_SD("sd3", R8A77965_CLK_SD3, CLK_SDSRC, 0x26c),
DEF_FIXED("cl", R8A77965_CLK_CL, CLK_PLL1_DIV2, 48, 1),
DEF_FIXED("cp", R8A77965_CLK_CP, CLK_EXTAL, 2, 1),
DEF_DIV6P1("canfd", R8A77965_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
DEF_DIV6P1("csi0", R8A77965_CLK_CSI0, CLK_PLL1_DIV4, 0x00c),
DEF_DIV6P1("mso", R8A77965_CLK_MSO, CLK_PLL1_DIV4, 0x014),
DEF_DIV6P1("hdmi", R8A77965_CLK_HDMI, CLK_PLL1_DIV4, 0x250),
DEF_GEN3_OSC("osc", R8A77965_CLK_OSC, CLK_EXTAL, 8),
DEF_BASE("r", R8A77965_CLK_R, CLK_TYPE_GEN3_R, CLK_RINT),
};
static const struct mssr_mod_clk r8a77965_mod_clks[] __initconst = {
DEF_MOD("scif5", 202, R8A77965_CLK_S3D4),
DEF_MOD("scif4", 203, R8A77965_CLK_S3D4),
DEF_MOD("scif3", 204, R8A77965_CLK_S3D4),
DEF_MOD("scif1", 206, R8A77965_CLK_S3D4),
DEF_MOD("scif0", 207, R8A77965_CLK_S3D4),
DEF_MOD("msiof3", 208, R8A77965_CLK_MSO),
DEF_MOD("msiof2", 209, R8A77965_CLK_MSO),
DEF_MOD("msiof1", 210, R8A77965_CLK_MSO),
DEF_MOD("msiof0", 211, R8A77965_CLK_MSO),
DEF_MOD("sys-dmac2", 217, R8A77965_CLK_S0D3),
DEF_MOD("sys-dmac1", 218, R8A77965_CLK_S0D3),
DEF_MOD("sys-dmac0", 219, R8A77965_CLK_S0D3),
DEF_MOD("cmt3", 300, R8A77965_CLK_R),
DEF_MOD("cmt2", 301, R8A77965_CLK_R),
DEF_MOD("cmt1", 302, R8A77965_CLK_R),
DEF_MOD("cmt0", 303, R8A77965_CLK_R),
DEF_MOD("scif2", 310, R8A77965_CLK_S3D4),
DEF_MOD("sdif3", 311, R8A77965_CLK_SD3),
DEF_MOD("sdif2", 312, R8A77965_CLK_SD2),
DEF_MOD("sdif1", 313, R8A77965_CLK_SD1),
DEF_MOD("sdif0", 314, R8A77965_CLK_SD0),
DEF_MOD("pcie1", 318, R8A77965_CLK_S3D1),
DEF_MOD("pcie0", 319, R8A77965_CLK_S3D1),
DEF_MOD("usb3-if0", 328, R8A77965_CLK_S3D1),
DEF_MOD("usb-dmac0", 330, R8A77965_CLK_S3D1),
DEF_MOD("usb-dmac1", 331, R8A77965_CLK_S3D1),
DEF_MOD("rwdt", 402, R8A77965_CLK_R),
DEF_MOD("intc-ex", 407, R8A77965_CLK_CP),
DEF_MOD("intc-ap", 408, R8A77965_CLK_S0D3),
DEF_MOD("audmac1", 501, R8A77965_CLK_S0D3),
DEF_MOD("audmac0", 502, R8A77965_CLK_S0D3),
DEF_MOD("drif7", 508, R8A77965_CLK_S3D2),
DEF_MOD("drif6", 509, R8A77965_CLK_S3D2),
DEF_MOD("drif5", 510, R8A77965_CLK_S3D2),
DEF_MOD("drif4", 511, R8A77965_CLK_S3D2),
DEF_MOD("drif3", 512, R8A77965_CLK_S3D2),
DEF_MOD("drif2", 513, R8A77965_CLK_S3D2),
DEF_MOD("drif1", 514, R8A77965_CLK_S3D2),
DEF_MOD("drif0", 515, R8A77965_CLK_S3D2),
DEF_MOD("hscif4", 516, R8A77965_CLK_S3D1),
DEF_MOD("hscif3", 517, R8A77965_CLK_S3D1),
DEF_MOD("hscif2", 518, R8A77965_CLK_S3D1),
DEF_MOD("hscif1", 519, R8A77965_CLK_S3D1),
DEF_MOD("hscif0", 520, R8A77965_CLK_S3D1),
DEF_MOD("thermal", 522, R8A77965_CLK_CP),
DEF_MOD("pwm", 523, R8A77965_CLK_S0D12),
DEF_MOD("fcpvd1", 602, R8A77965_CLK_S0D2),
DEF_MOD("fcpvd0", 603, R8A77965_CLK_S0D2),
DEF_MOD("fcpvb0", 607, R8A77965_CLK_S0D1),
DEF_MOD("fcpvi0", 611, R8A77965_CLK_S0D1),
DEF_MOD("fcpf0", 615, R8A77965_CLK_S0D1),
DEF_MOD("fcpcs", 619, R8A77965_CLK_S0D2),
DEF_MOD("vspd1", 622, R8A77965_CLK_S0D2),
DEF_MOD("vspd0", 623, R8A77965_CLK_S0D2),
DEF_MOD("vspb", 626, R8A77965_CLK_S0D1),
DEF_MOD("vspi0", 631, R8A77965_CLK_S0D1),
DEF_MOD("ehci1", 702, R8A77965_CLK_S3D4),
DEF_MOD("ehci0", 703, R8A77965_CLK_S3D4),
DEF_MOD("hsusb", 704, R8A77965_CLK_S3D4),
DEF_MOD("csi20", 714, R8A77965_CLK_CSI0),
DEF_MOD("csi40", 716, R8A77965_CLK_CSI0),
DEF_MOD("du3", 721, R8A77965_CLK_S2D1),
DEF_MOD("du1", 723, R8A77965_CLK_S2D1),
DEF_MOD("du0", 724, R8A77965_CLK_S2D1),
DEF_MOD("lvds", 727, R8A77965_CLK_S2D1),
DEF_MOD("hdmi0", 729, R8A77965_CLK_HDMI),
DEF_MOD("vin7", 804, R8A77965_CLK_S0D2),
DEF_MOD("vin6", 805, R8A77965_CLK_S0D2),
DEF_MOD("vin5", 806, R8A77965_CLK_S0D2),
DEF_MOD("vin4", 807, R8A77965_CLK_S0D2),
DEF_MOD("vin3", 808, R8A77965_CLK_S0D2),
DEF_MOD("vin2", 809, R8A77965_CLK_S0D2),
DEF_MOD("vin1", 810, R8A77965_CLK_S0D2),
DEF_MOD("vin0", 811, R8A77965_CLK_S0D2),
DEF_MOD("etheravb", 812, R8A77965_CLK_S0D6),
DEF_MOD("imr1", 822, R8A77965_CLK_S0D2),
DEF_MOD("imr0", 823, R8A77965_CLK_S0D2),
DEF_MOD("gpio7", 905, R8A77965_CLK_S3D4),
DEF_MOD("gpio6", 906, R8A77965_CLK_S3D4),
DEF_MOD("gpio5", 907, R8A77965_CLK_S3D4),
DEF_MOD("gpio4", 908, R8A77965_CLK_S3D4),
DEF_MOD("gpio3", 909, R8A77965_CLK_S3D4),
DEF_MOD("gpio2", 910, R8A77965_CLK_S3D4),
DEF_MOD("gpio1", 911, R8A77965_CLK_S3D4),
DEF_MOD("gpio0", 912, R8A77965_CLK_S3D4),
DEF_MOD("can-fd", 914, R8A77965_CLK_S3D2),
DEF_MOD("can-if1", 915, R8A77965_CLK_S3D4),
DEF_MOD("can-if0", 916, R8A77965_CLK_S3D4),
DEF_MOD("i2c6", 918, R8A77965_CLK_S0D6),
DEF_MOD("i2c5", 919, R8A77965_CLK_S0D6),
DEF_MOD("i2c-dvfs", 926, R8A77965_CLK_CP),
DEF_MOD("i2c4", 927, R8A77965_CLK_S0D6),
DEF_MOD("i2c3", 928, R8A77965_CLK_S0D6),
DEF_MOD("i2c2", 929, R8A77965_CLK_S3D2),
DEF_MOD("i2c1", 930, R8A77965_CLK_S3D2),
DEF_MOD("i2c0", 931, R8A77965_CLK_S3D2),
DEF_MOD("ssi-all", 1005, R8A77965_CLK_S3D4),
DEF_MOD("ssi9", 1006, MOD_CLK_ID(1005)),
DEF_MOD("ssi8", 1007, MOD_CLK_ID(1005)),
DEF_MOD("ssi7", 1008, MOD_CLK_ID(1005)),
DEF_MOD("ssi6", 1009, MOD_CLK_ID(1005)),
DEF_MOD("ssi5", 1010, MOD_CLK_ID(1005)),
DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)),
DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)),
DEF_MOD("ssi2", 1013, MOD_CLK_ID(1005)),
DEF_MOD("ssi1", 1014, MOD_CLK_ID(1005)),
DEF_MOD("ssi0", 1015, MOD_CLK_ID(1005)),
DEF_MOD("scu-all", 1017, R8A77965_CLK_S3D4),
DEF_MOD("scu-dvc1", 1018, MOD_CLK_ID(1017)),
DEF_MOD("scu-dvc0", 1019, MOD_CLK_ID(1017)),
DEF_MOD("scu-ctu1-mix1", 1020, MOD_CLK_ID(1017)),
DEF_MOD("scu-ctu0-mix0", 1021, MOD_CLK_ID(1017)),
DEF_MOD("scu-src9", 1022, MOD_CLK_ID(1017)),
DEF_MOD("scu-src8", 1023, MOD_CLK_ID(1017)),
DEF_MOD("scu-src7", 1024, MOD_CLK_ID(1017)),
DEF_MOD("scu-src6", 1025, MOD_CLK_ID(1017)),
DEF_MOD("scu-src5", 1026, MOD_CLK_ID(1017)),
DEF_MOD("scu-src4", 1027, MOD_CLK_ID(1017)),
DEF_MOD("scu-src3", 1028, MOD_CLK_ID(1017)),
DEF_MOD("scu-src2", 1029, MOD_CLK_ID(1017)),
DEF_MOD("scu-src1", 1030, MOD_CLK_ID(1017)),
DEF_MOD("scu-src0", 1031, MOD_CLK_ID(1017)),
};
static const unsigned int r8a77965_crit_mod_clks[] __initconst = {
MOD_CLK_ID(408), /* INTC-AP (GIC) */
};
/*
* CPG Clock Data
*/
/*
* MD EXTAL PLL0 PLL1 PLL3 PLL4 OSC
* 14 13 19 17 (MHz)
*-----------------------------------------------------------------
* 0 0 0 0 16.66 x 1 x180 x192 x192 x144 /16
* 0 0 0 1 16.66 x 1 x180 x192 x128 x144 /16
* 0 0 1 0 Prohibited setting
* 0 0 1 1 16.66 x 1 x180 x192 x192 x144 /16
* 0 1 0 0 20 x 1 x150 x160 x160 x120 /19
* 0 1 0 1 20 x 1 x150 x160 x106 x120 /19
* 0 1 1 0 Prohibited setting
* 0 1 1 1 20 x 1 x150 x160 x160 x120 /19
* 1 0 0 0 25 x 1 x120 x128 x128 x96 /24
* 1 0 0 1 25 x 1 x120 x128 x84 x96 /24
* 1 0 1 0 Prohibited setting
* 1 0 1 1 25 x 1 x120 x128 x128 x96 /24
* 1 1 0 0 33.33 / 2 x180 x192 x192 x144 /32
* 1 1 0 1 33.33 / 2 x180 x192 x128 x144 /32
* 1 1 1 0 Prohibited setting
* 1 1 1 1 33.33 / 2 x180 x192 x192 x144 /32
*/
#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 11) | \
(((md) & BIT(13)) >> 11) | \
(((md) & BIT(19)) >> 18) | \
(((md) & BIT(17)) >> 17))
static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = {
/* EXTAL div PLL1 mult/div PLL3 mult/div OSC prediv */
{ 1, 192, 1, 192, 1, 16, },
{ 1, 192, 1, 128, 1, 16, },
{ 0, /* Prohibited setting */ },
{ 1, 192, 1, 192, 1, 16, },
{ 1, 160, 1, 160, 1, 19, },
{ 1, 160, 1, 106, 1, 19, },
{ 0, /* Prohibited setting */ },
{ 1, 160, 1, 160, 1, 19, },
{ 1, 128, 1, 128, 1, 24, },
{ 1, 128, 1, 84, 1, 24, },
{ 0, /* Prohibited setting */ },
{ 1, 128, 1, 128, 1, 24, },
{ 2, 192, 1, 192, 1, 32, },
{ 2, 192, 1, 128, 1, 32, },
{ 0, /* Prohibited setting */ },
{ 2, 192, 1, 192, 1, 32, },
};
static int __init r8a77965_cpg_mssr_init(struct device *dev)
{
const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
u32 cpg_mode;
int error;
error = rcar_rst_read_mode_pins(&cpg_mode);
if (error)
return error;
cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
if (!cpg_pll_config->extal_div) {
dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
return -EINVAL;
}
return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
};
const struct cpg_mssr_info r8a77965_cpg_mssr_info __initconst = {
/* Core Clocks */
.core_clks = r8a77965_core_clks,
.num_core_clks = ARRAY_SIZE(r8a77965_core_clks),
.last_dt_core_clk = LAST_DT_CORE_CLK,
.num_total_core_clks = MOD_CLK_BASE,
/* Module Clocks */
.mod_clks = r8a77965_mod_clks,
.num_mod_clks = ARRAY_SIZE(r8a77965_mod_clks),
.num_hw_mod_clks = 12 * 32,
/* Critical Module Clocks */
.crit_mod_clks = r8a77965_crit_mod_clks,
.num_crit_mod_clks = ARRAY_SIZE(r8a77965_crit_mod_clks),
/* Callbacks */
.init = r8a77965_cpg_mssr_init,
.cpg_clk_register = rcar_gen3_cpg_clk_register,
};
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