linux-kernel - Re: [PATCH v2 2/3] cpufreq: ti-cpufreq: add support for AM62L3 SoC

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Message-ID: <ba251d2d-9319-4a4b-9ccb-f7681869617b@ti.com>
Date: Fri, 16 Jan 2026 15:15:29 -0600
From: Kendall Willis <k-willis@...com>
To: Dhruva Gole <d-gole@...com>, "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: 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>
Subject: Re: [PATCH v2 2/3] cpufreq: ti-cpufreq: add support for AM62L3 SoC

On 1/16/26 04:21, Dhruva Gole wrote:
> 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..4e65e96b784ee908716c63316bb54eb1ac1efc49 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)
> +

Shouldn't these defines for AM62L be placed after the AM62A defines to 
maintain alphabetical order?

>   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,
> @@ -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 */ }
>   };
>   
> @@ -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,
> +};
> +

Same thing here with the AM62L struct being before the AM62A struct 
which is not alphabetical.

>   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, },
> 

Best,
Kendall Willis <k-willis@...com>