Commit 1a4ddf6a authored by Nick Chan's avatar Nick Chan Committed by Viresh Kumar
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cpufreq: apple-soc: Add Apple A7-A8X SoC cpufreq support 



These SoCs only use 3 bits for p-states, and have a different
APPLE_DVFS_CMD_PS1 mask value.

Signed-off-by: default avatarNick Chan <towinchenmi@gmail.com>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent 13b147b2

drivers/cpufreq/apple-soc-cpufreq.c

+24 −6
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ 
#define APPLE_DVFS_CMD				0x20

#define APPLE_DVFS_CMD_BUSY			BIT(31)

#define APPLE_DVFS_CMD_SET			BIT(25)

#define APPLE_DVFS_CMD_PS1_S5L8960X		GENMASK(24, 22)

#define APPLE_DVFS_CMD_PS1_S5L8960X_SHIFT	22

#define APPLE_DVFS_CMD_PS2			GENMASK(15, 12)

#define APPLE_DVFS_CMD_PS1			GENMASK(4, 0)

#define APPLE_DVFS_CMD_PS1_SHIFT		0
@@ -36,6 +38,9 @@ 
 * Apple ran out of bits and had to shift this in T8112...

 */

#define APPLE_DVFS_STATUS			0x50

#define APPLE_DVFS_STATUS_CUR_PS_S5L8960X	GENMASK(5, 3)

#define APPLE_DVFS_STATUS_CUR_PS_SHIFT_S5L8960X	3

#define APPLE_DVFS_STATUS_TGT_PS_S5L8960X	GENMASK(2, 0)

#define APPLE_DVFS_STATUS_CUR_PS_T8103		GENMASK(7, 4)

#define APPLE_DVFS_STATUS_CUR_PS_SHIFT_T8103	4

#define APPLE_DVFS_STATUS_TGT_PS_T8103		GENMASK(3, 0)
@@ -72,6 +77,15 @@ struct apple_cpu_priv { 


static struct cpufreq_driver apple_soc_cpufreq_driver;



static const struct apple_soc_cpufreq_info soc_s5l8960x_info = {

	.has_ps2 = false,

	.max_pstate = 7,

	.cur_pstate_mask = APPLE_DVFS_STATUS_CUR_PS_S5L8960X,

	.cur_pstate_shift = APPLE_DVFS_STATUS_CUR_PS_SHIFT_S5L8960X,

	.ps1_mask = APPLE_DVFS_CMD_PS1_S5L8960X,

	.ps1_shift = APPLE_DVFS_CMD_PS1_S5L8960X_SHIFT,

};



static const struct apple_soc_cpufreq_info soc_t8103_info = {

	.has_ps2 = true,

	.max_pstate = 15,
@@ -99,6 +113,10 @@ static const struct apple_soc_cpufreq_info soc_default_info = { 
};



static const struct of_device_id apple_soc_cpufreq_of_match[] __maybe_unused = {

	{

		.compatible = "apple,s5l8960x-cluster-cpufreq",

		.data = &soc_s5l8960x_info,

	},

	{

		.compatible = "apple,t8103-cluster-cpufreq",

		.data = &soc_t8103_info,