Commit 078d2f22 authored by Shuosheng Huang's avatar Shuosheng Huang Committed by Viresh Kumar
Browse files

cpufreq: sun50i: add a100 cpufreq support 



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: default avatarShuosheng Huang <huangshuosheng@allwinnertech.com>
[masterr3c0rd@epochal.quest: add A100 to opp_match_list]
Signed-off-by: default avatarCody Eksal <masterr3c0rd@epochal.quest>
Reviewed-by: default avatarAndre Przywara <andre.przywara@arm.com>
Tested-by: default avatarAndre Przywara <andre.przywara@arm.com>
Tested-by: default avatarParthiban Nallathambi <parthiban@linumiz.com>
Acked-by: default avatarChen-Yu Tsai <wens@csie.org>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent 172bf5ed

drivers/cpufreq/cpufreq-dt-platdev.c

+1 −0
Original line number Diff line number Diff line
@@ -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", },

drivers/cpufreq/sun50i-cpufreq-nvmem.c

+28 −0
Original line number Diff line number Diff line
@@ -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" },