Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-15 08:31:55 +00:00
Code Issues Packages Projects Releases Wiki Activity

clk: actions: Add configurable PLL delay

Browse Source 
S500 SoC requires configurable delay for different PLLs. Hence, add
a separate macro for declaring a PLL with configurable delay and also
modify the existing OWL_PLL_NO_PARENT macro to use default delay so
that no need to modify the existing S700/S900 drivers.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Manivannan Sadhasivam 2019-01-15 09:03:35 +05:30 committed by Stephen Boyd
parent bfeffd1552
commit 9831289f6f
2 changed files with 25 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/clk/actions/owl-pll.c
View File

@ -179,7 +179,7 @@ static int owl_pll_set_rate(struct clk_hw *hw, unsigned long rate,
regmap_write(common->regmap, pll_hw->reg, reg);
udelay(PLL_STABILITY_WAIT_US);
udelay(pll_hw->delay);
return 0;
}

30
drivers/clk/actions/owl-pll.h
View File

@ -13,6 +13,8 @@
#include "owl-common.h"
#define OWL_PLL_DEF_DELAY 50
/* last entry should have rate = 0 */
struct clk_pll_table {
unsigned int val;
@ -27,6 +29,7 @@ struct owl_pll_hw {
u8 width;
u8 min_mul;
u8 max_mul;
u8 delay;
const struct clk_pll_table *table;
};
@ -36,7 +39,7 @@ struct owl_pll {
};
#define OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
_width, _min_mul, _max_mul, _table) \
_width, _min_mul, _max_mul, _delay, _table) \
{ \
.reg = _reg, \
.bfreq = _bfreq, \
@ -45,6 +48,7 @@ struct owl_pll {
.width = _width, \
.min_mul = _min_mul, \
.max_mul = _max_mul, \
.delay = _delay, \
.table = _table, \
}
@ -52,8 +56,8 @@ struct owl_pll {
_shift, _width, _min_mul, _max_mul, _table, _flags) \
struct owl_pll _struct = { \
.pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
_width, _min_mul, \
_max_mul, _table), \
_width, _min_mul, _max_mul, \
OWL_PLL_DEF_DELAY, _table), \
.common = { \
.regmap = NULL, \
.hw.init = CLK_HW_INIT(_name, \
@ -67,8 +71,23 @@ struct owl_pll {
_shift, _width, _min_mul, _max_mul, _table, _flags) \
struct owl_pll _struct = { \
.pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
_width, _min_mul, \
_max_mul, _table), \
_width, _min_mul, _max_mul, \
OWL_PLL_DEF_DELAY, _table), \
.common = { \
.regmap = NULL, \
.hw.init = CLK_HW_INIT_NO_PARENT(_name, \
&owl_pll_ops, \
_flags), \
}, \
}
#define OWL_PLL_NO_PARENT_DELAY(_struct, _name, _reg, _bfreq, _bit_idx, \
_shift, _width, _min_mul, _max_mul, _delay, _table, \
_flags) \
struct owl_pll _struct = { \
.pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
_width, _min_mul, _max_mul, \
_delay, _table), \
.common = { \
.regmap = NULL, \
.hw.init = CLK_HW_INIT_NO_PARENT(_name, \
@ -78,7 +97,6 @@ struct owl_pll {
}
#define mul_mask(m) ((1 << ((m)->width)) - 1)
#define PLL_STABILITY_WAIT_US (50)
static inline struct owl_pll *hw_to_owl_pll(const struct clk_hw *hw)
{