From: Dave Gerlach <d-gerlach@xxxxxx>
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@xxxxxx>
Signed-off-by: Vibhore Vardhan <vibhore@xxxxxx>
---
drivers/cpufreq/ti-cpufreq.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c
index df85a77d476b..48aa8d734447 100644
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@@ -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, },
--
2.34.1
