redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

clk: imx: refine the powerdown bit of clk-pllv3

Browse source 
The powerdown bit is a bit confused, let's change it to power_bit
to relfect both powerdown and powerup case according to different
plls.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Dong Aisheng 2016-06-13 20:24:52 +08:00 committed by Shawn Guo
parent b3e76bdc0b
commit c684766308
1 changed files with 10 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
drivers/clk/imx/clk-pllv3.c
View file

@ -29,8 +29,8 @@
* struct clk_pllv3 - IMX PLL clock version 3
* @clk_hw: clock source
* @base: base address of PLL registers
* @powerup_set: set POWER bit to power up the PLL
* @powerdown: pll powerdown offset bit
* @power_bit: pll power bit mask
* @powerup_set: set power_bit to power up the PLL
* @div_mask: mask of divider bits
* @div_shift: shift of divider bits
*
@ -40,8 +40,8 @@
struct clk_pllv3 {
struct clk_hw hw;
void __iomem *base;
u32 power_bit;
bool powerup_set;
u32 powerdown;
u32 div_mask;
u32 div_shift;
unsigned long ref_clock;
@ -52,7 +52,7 @@ struct clk_pllv3 {
static int clk_pllv3_wait_lock(struct clk_pllv3 *pll)
{
unsigned long timeout = jiffies + msecs_to_jiffies(10);
u32 val = readl_relaxed(pll->base) & pll->powerdown;
u32 val = readl_relaxed(pll->base) & pll->power_bit;
/* No need to wait for lock when pll is not powered up */
if ((pll->powerup_set && !val) || (!pll->powerup_set && val))
@ -77,9 +77,9 @@ static int clk_pllv3_prepare(struct clk_hw *hw)
val = readl_relaxed(pll->base);
if (pll->powerup_set)
val |= pll->powerdown;
val |= pll->power_bit;
else
val &= ~pll->powerdown;
val &= ~pll->power_bit;
writel_relaxed(val, pll->base);
return clk_pllv3_wait_lock(pll);
@ -92,9 +92,9 @@ static void clk_pllv3_unprepare(struct clk_hw *hw)
val = readl_relaxed(pll->base);
if (pll->powerup_set)
val &= ~pll->powerdown;
val &= ~pll->power_bit;
else
val |= pll->powerdown;
val |= pll->power_bit;
writel_relaxed(val, pll->base);
}
@ -316,7 +316,7 @@ struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
if (!pll)
return ERR_PTR(-ENOMEM);
pll->powerdown = BM_PLL_POWER;
pll->power_bit = BM_PLL_POWER;
switch (type) {
case IMX_PLLV3_SYS:
@ -332,7 +332,7 @@ struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
ops = &clk_pllv3_av_ops;
break;
case IMX_PLLV3_ENET_IMX7:
pll->powerdown = IMX7_ENET_PLL_POWER;
pll->power_bit = IMX7_ENET_PLL_POWER;
pll->ref_clock = 1000000000;
ops = &clk_pllv3_enet_ops;
break;