linux-kernel - Re: [PATCH 2/3] pmdomain: amlogic: Add support for A4 power domains controller

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Message-ID: <2f074d47-3021-4d81-93cd-c8e4593f0b0f@linaro.org>
Date: Tue, 28 May 2024 10:41:56 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: xianwei.zhao@...ogic.com, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Kevin Hilman <khilman@...libre.com>,
 Jerome Brunet <jbrunet@...libre.com>,
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
 Jianxin Pan <jianxin.pan@...ogic.com>, Ulf Hansson <ulf.hansson@...aro.org>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-pm@...r.kernel.org
Subject: Re: [PATCH 2/3] pmdomain: amlogic: Add support for A4 power domains
 controller

On 28/05/2024 10:39, Xianwei Zhao via B4 Relay wrote:
> From: Xianwei Zhao <xianwei.zhao@...ogic.com>
> 
> Add support for A4 power controller. A4 power control
> registers are in secure domain, and should be accessed by SMC.
> 
> Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
> ---
>   drivers/pmdomain/amlogic/meson-secure-pwrc.c | 28 ++++++++++++++++++++++++++++
>   1 file changed, 28 insertions(+)
> 
> diff --git a/drivers/pmdomain/amlogic/meson-secure-pwrc.c b/drivers/pmdomain/amlogic/meson-secure-pwrc.c
> index 4d5bda0d60fc..3a84d8a74a5e 100644
> --- a/drivers/pmdomain/amlogic/meson-secure-pwrc.c
> +++ b/drivers/pmdomain/amlogic/meson-secure-pwrc.c
> @@ -14,6 +14,7 @@
>   #include <dt-bindings/power/amlogic,c3-pwrc.h>
>   #include <dt-bindings/power/meson-s4-power.h>
>   #include <dt-bindings/power/amlogic,t7-pwrc.h>
> +#include <dt-bindings/power/amlogic,a4-pwrc.h>
>   #include <linux/arm-smccc.h>
>   #include <linux/firmware/meson/meson_sm.h>
>   #include <linux/module.h>
> @@ -136,6 +137,24 @@ static struct meson_secure_pwrc_domain_desc a1_pwrc_domains[] = {
>   	SEC_PD(RSA,	0),
>   };
>   
> +static struct meson_secure_pwrc_domain_desc a4_pwrc_domains[] = {
> +	SEC_PD(A4_AUDIO,	0),
> +	SEC_PD(A4_SDIOA,	0),
> +	SEC_PD(A4_EMMC,	0),
> +	SEC_PD(A4_USB_COMB,	0),
> +	SEC_PD(A4_ETH,		0),
> +	SEC_PD(A4_VOUT,		0),
> +	SEC_PD(A4_AUDIO_PDM,	0),
> +	/* DMC is for DDR PHY ana/dig and DMC, and should be always on */
> +	SEC_PD(A4_DMC,	GENPD_FLAG_ALWAYS_ON),
> +	/* WRAP is secure_top, a lot of modules are included, and should be always on */
> +	SEC_PD(A4_SYS_WRAP,	GENPD_FLAG_ALWAYS_ON),
> +	SEC_PD(A4_AO_I2C_S,	0),
> +	SEC_PD(A4_AO_UART,	0),
> +	/* IR is wake up trigger source, and should be always on */
> +	SEC_PD(A4_AO_IR,	GENPD_FLAG_ALWAYS_ON),
> +};
> +
>   static struct meson_secure_pwrc_domain_desc c3_pwrc_domains[] = {
>   	SEC_PD(C3_NNA,		0),
>   	SEC_PD(C3_AUDIO,	0),
> @@ -311,6 +330,11 @@ static struct meson_secure_pwrc_domain_data meson_secure_a1_pwrc_data = {
>   	.count = ARRAY_SIZE(a1_pwrc_domains),
>   };
>   
> +static struct meson_secure_pwrc_domain_data amlogic_secure_a4_pwrc_data = {
> +	.domains = a4_pwrc_domains,
> +	.count = ARRAY_SIZE(a4_pwrc_domains),
> +};
> +
>   static struct meson_secure_pwrc_domain_data amlogic_secure_c3_pwrc_data = {
>   	.domains = c3_pwrc_domains,
>   	.count = ARRAY_SIZE(c3_pwrc_domains),
> @@ -331,6 +355,10 @@ static const struct of_device_id meson_secure_pwrc_match_table[] = {
>   		.compatible = "amlogic,meson-a1-pwrc",
>   		.data = &meson_secure_a1_pwrc_data,
>   	},
> +	{
> +		.compatible = "amlogic,a4-pwrc",
> +		.data = &amlogic_secure_a4_pwrc_data,
> +	},
>   	{
>   		.compatible = "amlogic,c3-pwrc",
>   		.data = &amlogic_secure_c3_pwrc_data,
> 

Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>