linux-kernel - Re: [PATCH v10 2/4] soc: mediatek: add MT6765 scpsys and subdomain support

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Message-ID: <da80f06b-31d6-b728-43ab-e543f3f6d038@gmail.com>
Date:   Thu, 1 Apr 2021 11:24:28 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Macpaul Lin <macpaul.lin@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Wendell Lin <Wendell.Lin@...iatek.com>,
        Fabien Parent <fparent@...libre.com>,
        Weiyi Lu <weiyi.lu@...iatek.com>,
        Mars Cheng <mars.cheng@...iatek.com>,
        Sean Wang <Sean.Wang@...iatek.com>,
        Owen Chen <owen.chen@...iatek.com>,
        Evan Green <evgreen@...omium.org>, Yong.Wu@...iatek.com,
        Joerg Roedel <jroedel@...e.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Marc Zyngier <marc.zyngier@....com>,
        Ryder Lee <Ryder.Lee@...iatek.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-clk@...r.kernel.org
Cc:     Ainge Hsu <ainge.hsu@...iatek.com>,
        Eddie Hung <eddie.hung@...iatek.com>,
        Mediatek WSD Upstream <wsd_upstream@...iatek.com>,
        Macpaul Lin <macpaul@...il.com>,
        CC Hwang <cc.hwang@...iatek.com>,
        Loda Chou <loda.chou@...iatek.com>
Subject: Re: [PATCH v10 2/4] soc: mediatek: add MT6765 scpsys and subdomain
 support

Hi Macpaul,

On 10/03/2021 07:36, Macpaul Lin wrote:
> From: Mars Cheng <mars.cheng@...iatek.com>
> 
> This adds scpsys support for MT6765
> Add subdomain support for MT6765:
> isp, mm, connsys, mfg, and cam.
> 
> Signed-off-by: Mars Cheng <mars.cheng@...iatek.com>
> Signed-off-by: Owen Chen <owen.chen@...iatek.com>
> Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
> ---
>  drivers/soc/mediatek/mtk-scpsys.c | 91 +++++++++++++++++++++++++++++++
>  1 file changed, 91 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c

the mtk-scpsys is the old version of the driver. Please port your code to the
new driver: mtk-pm-domains.c

The biggest difference for you will be to describe the power domain hierarchy in
DT instead as in the driver.

Regards,
Matthias

> index ca75b14931ec..fc8d3858f1b4 100644
> --- a/drivers/soc/mediatek/mtk-scpsys.c
> +++ b/drivers/soc/mediatek/mtk-scpsys.c
> @@ -15,6 +15,7 @@
>  
>  #include <dt-bindings/power/mt2701-power.h>
>  #include <dt-bindings/power/mt2712-power.h>
> +#include <dt-bindings/power/mt6765-power.h>
>  #include <dt-bindings/power/mt6797-power.h>
>  #include <dt-bindings/power/mt7622-power.h>
>  #include <dt-bindings/power/mt7623a-power.h>
> @@ -750,6 +751,81 @@ static const struct scp_subdomain scp_subdomain_mt2712[] = {
>  	{MT2712_POWER_DOMAIN_MFG_SC2, MT2712_POWER_DOMAIN_MFG_SC3},
>  };
>  
> +/*
> + * MT6765 power domain support
> + */
> +#define SPM_PWR_STATUS_MT6765			0x0180
> +#define SPM_PWR_STATUS_2ND_MT6765		0x0184
> +
> +static const struct scp_domain_data scp_domain_data_mt6765[] = {
> +	[MT6765_POWER_DOMAIN_VCODEC] = {
> +		.name = "vcodec",
> +		.sta_mask = BIT(26),
> +		.ctl_offs = 0x300,
> +		.sram_pdn_bits = GENMASK(8, 8),
> +		.sram_pdn_ack_bits = GENMASK(12, 12),
> +	},
> +	[MT6765_POWER_DOMAIN_ISP] = {
> +		.name = "isp",
> +		.sta_mask = BIT(5),
> +		.ctl_offs = 0x308,
> +		.sram_pdn_bits = GENMASK(8, 8),
> +		.sram_pdn_ack_bits = GENMASK(12, 12),
> +	},
> +	[MT6765_POWER_DOMAIN_MM] = {
> +		.name = "mm",
> +		.sta_mask = BIT(3),
> +		.ctl_offs = 0x30C,
> +		.sram_pdn_bits = GENMASK(8, 8),
> +		.sram_pdn_ack_bits = GENMASK(12, 12),
> +		.clk_id = {CLK_MM},
> +	},
> +	[MT6765_POWER_DOMAIN_CONN] = {
> +		.name = "conn",
> +		.sta_mask = BIT(1),
> +		.ctl_offs = 0x32C,
> +		.sram_pdn_bits = 0,
> +		.sram_pdn_ack_bits = 0,
> +	},
> +	[MT6765_POWER_DOMAIN_MFG_ASYNC] = {
> +		.name = "mfg_async",
> +		.sta_mask = BIT(23),
> +		.ctl_offs = 0x334,
> +		.sram_pdn_bits = 0,
> +		.sram_pdn_ack_bits = 0,
> +		.clk_id = {CLK_MFG},
> +	},
> +	[MT6765_POWER_DOMAIN_MFG] = {
> +		.name = "mfg",
> +		.sta_mask = BIT(4),
> +		.ctl_offs = 0x338,
> +		.sram_pdn_bits = GENMASK(8, 8),
> +		.sram_pdn_ack_bits = GENMASK(12, 12),
> +	},
> +	[MT6765_POWER_DOMAIN_CAM] = {
> +		.name = "cam",
> +		.sta_mask = BIT(25),
> +		.ctl_offs = 0x344,
> +		.sram_pdn_bits = GENMASK(9, 8),
> +		.sram_pdn_ack_bits = GENMASK(13, 12),
> +	},
> +	[MT6765_POWER_DOMAIN_MFG_CORE0] = {
> +		.name = "mfg_core0",
> +		.sta_mask = BIT(7),
> +		.ctl_offs = 0x34C,
> +		.sram_pdn_bits = GENMASK(8, 8),
> +		.sram_pdn_ack_bits = GENMASK(12, 12),
> +	},
> +};
> +
> +static const struct scp_subdomain scp_subdomain_mt6765[] = {
> +	{MT6765_POWER_DOMAIN_MM, MT6765_POWER_DOMAIN_CAM},
> +	{MT6765_POWER_DOMAIN_MM, MT6765_POWER_DOMAIN_ISP},
> +	{MT6765_POWER_DOMAIN_MM, MT6765_POWER_DOMAIN_VCODEC},
> +	{MT6765_POWER_DOMAIN_MFG_ASYNC, MT6765_POWER_DOMAIN_MFG},
> +	{MT6765_POWER_DOMAIN_MFG, MT6765_POWER_DOMAIN_MFG_CORE0},
> +};
> +
>  /*
>   * MT6797 power domain support
>   */
> @@ -1033,6 +1109,18 @@ static const struct scp_soc_data mt2712_data = {
>  	.bus_prot_reg_update = false,
>  };
>  
> +static const struct scp_soc_data mt6765_data = {
> +	.domains = scp_domain_data_mt6765,
> +	.num_domains = ARRAY_SIZE(scp_domain_data_mt6765),
> +	.subdomains = scp_subdomain_mt6765,
> +	.num_subdomains = ARRAY_SIZE(scp_subdomain_mt6765),
> +	.regs = {
> +		.pwr_sta_offs = SPM_PWR_STATUS_MT6765,
> +		.pwr_sta2nd_offs = SPM_PWR_STATUS_2ND_MT6765,
> +	},
> +	.bus_prot_reg_update = true,
> +};
> +
>  static const struct scp_soc_data mt6797_data = {
>  	.domains = scp_domain_data_mt6797,
>  	.num_domains = ARRAY_SIZE(scp_domain_data_mt6797),
> @@ -1088,6 +1176,9 @@ static const struct of_device_id of_scpsys_match_tbl[] = {
>  	}, {
>  		.compatible = "mediatek,mt2712-scpsys",
>  		.data = &mt2712_data,
> +	}, {
> +		.compatible = "mediatek,mt6765-scpsys",
> +		.data = &mt6765_data,
>  	}, {
>  		.compatible = "mediatek,mt6797-scpsys",
>  		.data = &mt6797_data,
>