Commit aac0293a authored by Dave Gerlach's avatar Dave Gerlach Committed by Viresh Kumar
Browse files

cpufreq: ti-cpufreq: Add support for AM625 



Add support for TI K3 AM625 SoC to read speed and revision values from
hardware and pass to OPP layer.

Signed-off-by: default avatarDave Gerlach <d-gerlach@ti.com>
Signed-off-by: default avatarVibhore Vardhan <vibhore@ti.com>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent cb140497

drivers/cpufreq/ti-cpufreq.c

+36 −0
Original line number Diff line number Diff line
@@ -39,6 +39,14 @@ 
#define OMAP34xx_ProdID_SKUID			0x4830A20C

#define OMAP3_SYSCON_BASE	(0x48000000 + 0x2000 + 0x270)



#define AM625_EFUSE_K_MPU_OPP			11

#define AM625_EFUSE_S_MPU_OPP			19

#define AM625_EFUSE_T_MPU_OPP			20



#define AM625_SUPPORT_K_MPU_OPP			BIT(0)

#define AM625_SUPPORT_S_MPU_OPP			BIT(1)

#define AM625_SUPPORT_T_MPU_OPP			BIT(2)



#define VERSION_COUNT				2



struct ti_cpufreq_data;
@@ -104,6 +112,25 @@ static unsigned long omap3_efuse_xlate(struct ti_cpufreq_data *opp_data, 
	return BIT(efuse);

}



static unsigned long am625_efuse_xlate(struct ti_cpufreq_data *opp_data,

				       unsigned long efuse)

{

	unsigned long calculated_efuse = AM625_SUPPORT_K_MPU_OPP;



	switch (efuse) {

	case AM625_EFUSE_T_MPU_OPP:

		calculated_efuse |= AM625_SUPPORT_T_MPU_OPP;

		fallthrough;

	case AM625_EFUSE_S_MPU_OPP:

		calculated_efuse |= AM625_SUPPORT_S_MPU_OPP;

		fallthrough;

	case AM625_EFUSE_K_MPU_OPP:

		calculated_efuse |= AM625_SUPPORT_K_MPU_OPP;

	}



	return calculated_efuse;

}



static struct ti_cpufreq_soc_data am3x_soc_data = {

	.efuse_xlate = amx3_efuse_xlate,

	.efuse_fallback = AM33XX_800M_ARM_MPU_MAX_FREQ,
@@ -198,6 +225,14 @@ static struct ti_cpufreq_soc_data am3517_soc_data = { 
	.multi_regulator = false,

};



static struct ti_cpufreq_soc_data am625_soc_data = {

	.efuse_xlate = am625_efuse_xlate,

	.efuse_offset = 0x0018,

	.efuse_mask = 0x07c0,

	.efuse_shift = 0x6,

	.rev_offset = 0x0014,

	.multi_regulator = false,

};



/**

 * ti_cpufreq_get_efuse() - Parse and return efuse value present on SoC
@@ -301,6 +336,7 @@ static const struct of_device_id ti_cpufreq_of_match[] = { 
	{ .compatible = "ti,dra7", .data = &dra7_soc_data },

	{ .compatible = "ti,omap34xx", .data = &omap34xx_soc_data, },

	{ .compatible = "ti,omap36xx", .data = &omap36xx_soc_data, },

	{ .compatible = "ti,am625", .data = &am625_soc_data, },

	/* legacy */

	{ .compatible = "ti,omap3430", .data = &omap34xx_soc_data, },

	{ .compatible = "ti,omap3630", .data = &omap36xx_soc_data, },