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cpufreq: sun50i: add a100 cpufreq support

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Let's add cpufreq nvmem based for allwinner a100 soc. It's similar to h6,
let us use efuse_xlate to extract the differentiated part.

Signed-off-by: Shuosheng Huang <huangshuosheng@allwinnertech.com>
[masterr3c0rd@epochal.quest: add A100 to opp_match_list]
Signed-off-by: Cody Eksal <masterr3c0rd@epochal.quest>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Parthiban Nallathambi <parthiban@linumiz.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Shuosheng Huang 2024-10-31 04:02:25 -03:00 committed by Viresh Kumar
parent 172bf5ed04
commit 078d2f2256
2 changed files with 29 additions and 0 deletions
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1
drivers/cpufreq/cpufreq-dt-platdev.c
View File

@ -103,6 +103,7 @@ static const struct of_device_id allowlist[] __initconst = {
* platforms using "operating-points-v2" property.
*/
static const struct of_device_id blocklist[] __initconst = {
{ .compatible = "allwinner,sun50i-a100" },
{ .compatible = "allwinner,sun50i-h6", },
{ .compatible = "allwinner,sun50i-h616", },
{ .compatible = "allwinner,sun50i-h618", },

28
drivers/cpufreq/sun50i-cpufreq-nvmem.c
View File

@ -22,6 +22,9 @@
#define NVMEM_MASK 0x7
#define NVMEM_SHIFT 5
#define SUN50I_A100_NVMEM_MASK 0xf
#define SUN50I_A100_NVMEM_SHIFT 12
static struct platform_device *cpufreq_dt_pdev, *sun50i_cpufreq_pdev;
struct sunxi_cpufreq_data {
@ -45,6 +48,23 @@ static u32 sun50i_h6_efuse_xlate(u32 speedbin)
return 0;
}
static u32 sun50i_a100_efuse_xlate(u32 speedbin)
{
u32 efuse_value;
efuse_value = (speedbin >> SUN50I_A100_NVMEM_SHIFT) &
SUN50I_A100_NVMEM_MASK;
switch (efuse_value) {
case 0b100:
return 2;
case 0b010:
return 1;
default:
return 0;
}
}
static int get_soc_id_revision(void)
{
#ifdef CONFIG_HAVE_ARM_SMCCC_DISCOVERY
@ -108,6 +128,10 @@ static struct sunxi_cpufreq_data sun50i_h6_cpufreq_data = {
.efuse_xlate = sun50i_h6_efuse_xlate,
};
static struct sunxi_cpufreq_data sun50i_a100_cpufreq_data = {
.efuse_xlate = sun50i_a100_efuse_xlate,
};
static struct sunxi_cpufreq_data sun50i_h616_cpufreq_data = {
.efuse_xlate = sun50i_h616_efuse_xlate,
};
@ -116,6 +140,9 @@ static const struct of_device_id cpu_opp_match_list[] = {
{ .compatible = "allwinner,sun50i-h6-operating-points",
.data = &sun50i_h6_cpufreq_data,
},
{ .compatible = "allwinner,sun50i-a100-operating-points",
.data = &sun50i_a100_cpufreq_data,
},
{ .compatible = "allwinner,sun50i-h616-operating-points",
.data = &sun50i_h616_cpufreq_data,
},
@ -291,6 +318,7 @@ static struct platform_driver sun50i_cpufreq_driver = {
static const struct of_device_id sun50i_cpufreq_match_list[] = {
{ .compatible = "allwinner,sun50i-h6" },
{ .compatible = "allwinner,sun50i-a100" },
{ .compatible = "allwinner,sun50i-h616" },
{ .compatible = "allwinner,sun50i-h618" },
{ .compatible = "allwinner,sun50i-h700" },