linux-kernel - [PATCH v3 2/3] cpufreq: ti-cpufreq: add support for AM62L3 SoC

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Message-ID: <20260120-am62l-cpufreq-v3-2-8c69b80168a3@ti.com>
Date: Tue, 20 Jan 2026 17:17:31 +0530
From: Dhruva Gole <d-gole@...com>
To: "Rafael J. Wysocki" <rafael@...nel.org>, Viresh Kumar
	<viresh.kumar@...aro.org>, Nishanth Menon <nm@...com>, Vignesh Raghavendra
	<vigneshr@...com>, Tero Kristo <kristo@...nel.org>, Rob Herring
	<robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
	<conor+dt@...nel.org>
CC: Kendall Willis <k-willis@...com>, Sebin Francis <sebin.francis@...com>,
	Bryan Brattlof <bb@...com>, <linux-pm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, Dhruva Gole <d-gole@...com>
Subject: [PATCH v3 2/3] cpufreq: ti-cpufreq: add support for AM62L3 SoC

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.

While at it, also sort instances where the SOC family names
were not sorted alphabetically.

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

Signed-off-by: Dhruva Gole <d-gole@...com>
---
 drivers/cpufreq/ti-cpufreq.c | 34 +++++++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c
index 6ee76f5fe9c567b0b88797ddb51764a2a5606b16..3d1129aeed02b06f5877663a1b87521a230e3b32 100644
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@@ -70,6 +70,12 @@ enum {
 #define AM62A7_SUPPORT_R_MPU_OPP		BIT(1)
 #define AM62A7_SUPPORT_V_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)
+
 #define AM62P5_EFUSE_O_MPU_OPP			15
 #define AM62P5_EFUSE_S_MPU_OPP			19
 #define AM62P5_EFUSE_T_MPU_OPP			20
@@ -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,
@@ -313,8 +335,9 @@ static struct ti_cpufreq_soc_data am3517_soc_data = {
 static const struct soc_device_attribute k3_cpufreq_soc[] = {
 	{ .family = "AM62X", },
 	{ .family = "AM62AX", },
-	{ .family = "AM62PX", },
 	{ .family = "AM62DX", },
+	{ .family = "AM62LX", },
+	{ .family = "AM62PX", },
 	{ /* sentinel */ }
 };
 
@@ -335,6 +358,14 @@ static struct ti_cpufreq_soc_data am62a7_soc_data = {
 	.multi_regulator = false,
 };
 
+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 am62p5_soc_data = {
 	.efuse_xlate = am62p5_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