[PATCH 2/3] cpufreq: ti-cpufreq: add support for AM62L3 SoC

[Dhruva Gole]

Add CPUFreq support for the AM62L3 SoC with the appropriate
AM62L3 speed grade constants according to the datasheet [1].

This follows the same architecture-specific implementation pattern
as other TI SoCs in the AM6x family.

[1] https://www.ti.com/lit/pdf/SPRSPA1

Signed-off-by: Dhruva Gole <d-gole at ti.com>
---
 drivers/cpufreq/ti-cpufreq.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c
index 6ee76f5fe9c567b0b88797ddb51764a2a5606b16..8d8fdb068dcdc2caa0b656405f38a072c0700f71 100644
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@@ -48,6 +48,12 @@
 #define AM625_SUPPORT_S_MPU_OPP			BIT(1)
 #define AM625_SUPPORT_T_MPU_OPP			BIT(2)
 
+#define AM62L3_EFUSE_E_MPU_OPP			5
+#define AM62L3_EFUSE_O_MPU_OPP			15
+
+#define AM62L3_SUPPORT_E_MPU_OPP		BIT(0)
+#define AM62L3_SUPPORT_O_MPU_OPP		BIT(1)
+
 enum {
 	AM62A7_EFUSE_M_MPU_OPP =		13,
 	AM62A7_EFUSE_N_MPU_OPP,
@@ -213,6 +219,22 @@ static unsigned long am625_efuse_xlate(struct ti_cpufreq_data *opp_data,
 	return calculated_efuse;
 }
 
+static unsigned long am62l3_efuse_xlate(struct ti_cpufreq_data *opp_data,
+				       unsigned long efuse)
+{
+	unsigned long calculated_efuse = AM62L3_SUPPORT_E_MPU_OPP;
+
+	switch (efuse) {
+	case AM62L3_EFUSE_O_MPU_OPP:
+		calculated_efuse |= AM62L3_SUPPORT_O_MPU_OPP;
+		fallthrough;
+	case AM62L3_EFUSE_E_MPU_OPP:
+		calculated_efuse |= AM62L3_SUPPORT_E_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,
@@ -315,6 +337,7 @@ static const struct soc_device_attribute k3_cpufreq_soc[] = {
 	{ .family = "AM62AX", },
 	{ .family = "AM62PX", },
 	{ .family = "AM62DX", },
+	{ .family = "AM62LX", },
 	{ /* sentinel */ }
 };
 
@@ -327,6 +350,14 @@ static struct ti_cpufreq_soc_data am625_soc_data = {
 	.quirks = TI_QUIRK_SYSCON_IS_SINGLE_REG,
 };
 
+static struct ti_cpufreq_soc_data am62l3_soc_data = {
+	.efuse_xlate = am62l3_efuse_xlate,
+	.efuse_offset = 0x0,
+	.efuse_mask = 0x07c0,
+	.efuse_shift = 0x6,
+	.multi_regulator = false,
+};
+
 static struct ti_cpufreq_soc_data am62a7_soc_data = {
 	.efuse_xlate = am62a7_efuse_xlate,
 	.efuse_offset = 0x0,
@@ -463,6 +494,7 @@ static const struct of_device_id ti_cpufreq_of_match[]  __maybe_unused = {
 	{ .compatible = "ti,am625", .data = &am625_soc_data, },
 	{ .compatible = "ti,am62a7", .data = &am62a7_soc_data, },
 	{ .compatible = "ti,am62d2", .data = &am62a7_soc_data, },
+	{ .compatible = "ti,am62l3", .data = &am62l3_soc_data, },
 	{ .compatible = "ti,am62p5", .data = &am62p5_soc_data, },
 	/* legacy */
 	{ .compatible = "ti,omap3430", .data = &omap34xx_soc_data, },

-- 
2.34.1