linux-kernel - Re: [PATCH V2 5/6] soc: amlogic: Add support for T7 power domains controller

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Message-ID: <97c05c1f-1d59-4dc8-9a1b-ae2fea61e094@linaro.org>
Date:   Thu, 24 Aug 2023 10:30:43 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Xianwei Zhao <xianwei.zhao@...ogic.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Kevin Hilman <khilman@...libre.com>
Subject: Re: [PATCH V2 5/6] soc: amlogic: Add support for T7 power domains
 controller

On 24/08/2023 07:59, Xianwei Zhao wrote:
> From: "xianwei.zhao" <xianwei.zhao@...ogic.com>
> 
> Add support for T7 power controller. T7 power control
> registers are in secure domain, and should be accessed by SMC.
> 
> Signed-off-by: xianwei.zhao <xianwei.zhao@...ogic.com>
> ---
> V1 -> V2: Modify T7_NIC flag  "ALWAYS_ON"
> ---
>   drivers/genpd/amlogic/meson-secure-pwrc.c | 73 +++++++++++++++++++++++
>   1 file changed, 73 insertions(+)
> 
> diff --git a/drivers/genpd/amlogic/meson-secure-pwrc.c b/drivers/genpd/amlogic/meson-secure-pwrc.c
> index 3e7e3bd25d1f..2233f6cb7e71 100644
> --- a/drivers/genpd/amlogic/meson-secure-pwrc.c
> +++ b/drivers/genpd/amlogic/meson-secure-pwrc.c
> @@ -13,6 +13,7 @@
>   #include <dt-bindings/power/meson-a1-power.h>
>   #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 <linux/arm-smccc.h>
>   #include <linux/firmware/meson/meson_sm.h>
>   #include <linux/module.h>
> @@ -164,6 +165,69 @@ static struct meson_secure_pwrc_domain_desc s4_pwrc_domains[] = {
>   	SEC_PD(S4_AUDIO,	0),
>   };
>   
> +static struct meson_secure_pwrc_domain_desc t7_pwrc_domains[] = {
> +	SEC_PD(T7_DSPA,		0),
> +	SEC_PD(T7_DSPB,		0),
> +	TOP_PD(T7_DOS_HCODEC,	0, PWRC_T7_NIC3_ID),
> +	TOP_PD(T7_DOS_HEVC,	0, PWRC_T7_NIC3_ID),
> +	TOP_PD(T7_DOS_VDEC,	0, PWRC_T7_NIC3_ID),
> +	TOP_PD(T7_DOS_WAVE,	0, PWRC_T7_NIC3_ID),
> +	SEC_PD(T7_VPU_HDMI,	0),
> +	SEC_PD(T7_USB_COMB,	0),
> +	SEC_PD(T7_PCIE,		0),
> +	TOP_PD(T7_GE2D,		0, PWRC_T7_NIC3_ID),
> +	/* SRAMA is used as ATF runtime memory, and should be always on */
> +	SEC_PD(T7_SRAMA,	GENPD_FLAG_ALWAYS_ON),
> +	/* SRAMB is used as ATF runtime memory, and should be always on */
> +	SEC_PD(T7_SRAMB,	GENPD_FLAG_ALWAYS_ON),
> +	SEC_PD(T7_HDMIRX,	0),
> +	SEC_PD(T7_VI_CLK1,	0),
> +	SEC_PD(T7_VI_CLK2,	0),
> +	/* ETH is for ethernet online wakeup, and should be always on */
> +	SEC_PD(T7_ETH,		GENPD_FLAG_ALWAYS_ON),
> +	SEC_PD(T7_ISP,		0),
> +	SEC_PD(T7_MIPI_ISP,	0),
> +	TOP_PD(T7_GDC,		0, PWRC_T7_NIC3_ID),
> +	TOP_PD(T7_DEWARP,	0, PWRC_T7_NIC3_ID),
> +	SEC_PD(T7_SDIO_A,	0),
> +	SEC_PD(T7_SDIO_B,	0),
> +	SEC_PD(T7_EMMC,		0),
> +	TOP_PD(T7_MALI_SC0,	0, PWRC_T7_NNA_TOP_ID),
> +	TOP_PD(T7_MALI_SC1,	0, PWRC_T7_NNA_TOP_ID),
> +	TOP_PD(T7_MALI_SC2,	0, PWRC_T7_NNA_TOP_ID),
> +	TOP_PD(T7_MALI_SC3,	0, PWRC_T7_NNA_TOP_ID),
> +	SEC_PD(T7_MALI_TOP,	0),
> +	TOP_PD(T7_NNA_CORE0,	0, PWRC_T7_NNA_TOP_ID),
> +	TOP_PD(T7_NNA_CORE1,	0, PWRC_T7_NNA_TOP_ID),
> +	TOP_PD(T7_NNA_CORE2,	0, PWRC_T7_NNA_TOP_ID),
> +	TOP_PD(T7_NNA_CORE3,	0, PWRC_T7_NNA_TOP_ID),
> +	SEC_PD(T7_NNA_TOP,	0),
> +	SEC_PD(T7_DDR0,		GENPD_FLAG_ALWAYS_ON),
> +	SEC_PD(T7_DDR1,		GENPD_FLAG_ALWAYS_ON),
> +	/* DMC0 is for DDR PHY ana/dig and DMC, and should be always on */
> +	SEC_PD(T7_DMC0,		GENPD_FLAG_ALWAYS_ON),
> +	/* DMC1 is for DDR PHY ana/dig and DMC, and should be always on */
> +	SEC_PD(T7_DMC1,		GENPD_FLAG_ALWAYS_ON),
> +	/* NOC is related to clk bus, and should be always on */
> +	SEC_PD(T7_NOC,		GENPD_FLAG_ALWAYS_ON),
> +	/* NIC is for the Arm NIC-400 interconnect, and should be always on */
> +	SEC_PD(T7_NIC2,		GENPD_FLAG_ALWAYS_ON),
> +	SEC_PD(T7_NIC3,		0),
> +	/* CPU accesses the interleave data to the ddr need cci, and should be always on */
> +	SEC_PD(T7_CCI,		GENPD_FLAG_ALWAYS_ON),
> +	SEC_PD(T7_MIPI_DSI0,	0),
> +	SEC_PD(T7_SPICC0,	0),
> +	SEC_PD(T7_SPICC1,	0),
> +	SEC_PD(T7_SPICC2,	0),
> +	SEC_PD(T7_SPICC3,	0),
> +	SEC_PD(T7_SPICC4,	0),
> +	SEC_PD(T7_SPICC5,	0),
> +	SEC_PD(T7_EDP0,		0),
> +	SEC_PD(T7_EDP1,		0),
> +	SEC_PD(T7_MIPI_DSI1,	0),
> +	SEC_PD(T7_AUDIO,	0),
> +};
> +
>   static int meson_secure_pwrc_probe(struct platform_device *pdev)
>   {
>   	int i;
> @@ -257,6 +321,11 @@ static struct meson_secure_pwrc_domain_data meson_secure_s4_pwrc_data = {
>   	.count = ARRAY_SIZE(s4_pwrc_domains),
>   };
>   
> +static struct meson_secure_pwrc_domain_data amlogic_secure_t7_pwrc_data = {
> +	.domains = t7_pwrc_domains,
> +	.count = ARRAY_SIZE(t7_pwrc_domains),
> +};
> +
>   static const struct of_device_id meson_secure_pwrc_match_table[] = {
>   	{
>   		.compatible = "amlogic,meson-a1-pwrc",
> @@ -270,6 +339,10 @@ static const struct of_device_id meson_secure_pwrc_match_table[] = {
>   		.compatible = "amlogic,meson-s4-pwrc",
>   		.data = &meson_secure_s4_pwrc_data,
>   	},
> +	{
> +		.compatible = "amlogic,t7-pwrc",
> +		.data = &amlogic_secure_t7_pwrc_data,
> +	},
>   	{ /* sentinel */ }
>   };
>   MODULE_DEVICE_TABLE(of, meson_secure_pwrc_match_table);

With updated subject:

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