xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

clk: meson: clk-pll: drop hard-coded rates from pll tables

Browse Source 
Putting hard-coded rates inside the parameter tables assumes that
the parent is known and will never change. That's a big assumption
we should not make.

We have everything we need to recalculate the output rate using
the parent rate and the rest of the parameters. Let's do so and
drop the rates from the tables.

Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
This commit is contained in:
Jerome Brunet
2018-08-01 16:00:53 +02:00
parent 87173557d2
commit dd601dbc01
5 changed files with 162 additions and 142 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/clk/meson/meson8b.c
View File

@@ -29,22 +29,22 @@ struct meson8b_clk_reset {
void __iomem *base;
};
static const struct pll_rate_table sys_pll_rate_table[] = {
PLL_RATE(1200000000, 50, 1),
PLL_RATE(1224000000, 51, 1),
PLL_RATE(1248000000, 52, 1),
PLL_RATE(1272000000, 53, 1),
PLL_RATE(1296000000, 54, 1),
PLL_RATE(1320000000, 55, 1),
PLL_RATE(1344000000, 56, 1),
PLL_RATE(1368000000, 57, 1),
PLL_RATE(1392000000, 58, 1),
PLL_RATE(1416000000, 59, 1),
PLL_RATE(1440000000, 60, 1),
PLL_RATE(1464000000, 61, 1),
PLL_RATE(1488000000, 62, 1),
PLL_RATE(1512000000, 63, 1),
PLL_RATE(1536000000, 64, 1),
static const struct pll_params_table sys_pll_params_table[] = {
PLL_PARAMS(50, 1),
PLL_PARAMS(51, 1),
PLL_PARAMS(52, 1),
PLL_PARAMS(53, 1),
PLL_PARAMS(54, 1),
PLL_PARAMS(55, 1),
PLL_PARAMS(56, 1),
PLL_PARAMS(57, 1),
PLL_PARAMS(58, 1),
PLL_PARAMS(59, 1),
PLL_PARAMS(60, 1),
PLL_PARAMS(61, 1),
PLL_PARAMS(62, 1),
PLL_PARAMS(63, 1),
PLL_PARAMS(64, 1),
{ /* sentinel */ },
};
@@ -196,7 +196,7 @@ static struct clk_regmap meson8b_sys_pll_dco = {
.shift = 29,
.width = 1,
},
.table = sys_pll_rate_table,
.table = sys_pll_params_table,
},
.hw.init = &(struct clk_init_data){
.name = "sys_pll_dco",