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cpufreq: ti-cpufreq: Add support for AM625

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

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Dave Gerlach 2022-11-01 13:09:31 -05:00 committed by Viresh Kumar
parent cb140497fe
commit aac0293a8f
1 changed files with 36 additions and 0 deletions
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36
drivers/cpufreq/ti-cpufreq.c
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@ -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, },