linux-kernel - Re: [PATCH] PM / AVS: rockchip-io: add io selectors and supplies for rk3399

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Message-ID: <4748955.K1DVHdsoLd@diego>
Date:	Wed, 16 Mar 2016 12:11:41 +0100
From:	Heiko Stübner <heiko@...ech.de>
To:	David Wu <david.wu@...k-chips.com>
Cc:	khilman@...nel.org, nm@...com, huangtao@...k-chips.com,
	cf@...k-chips.com, zyw@...k-chips.com, xjq@...k-chips.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PM / AVS: rockchip-io: add io selectors and supplies for rk3399

Hi David,

Am Mittwoch, 16. März 2016, 02:45:26 schrieb David Wu:
> This adds the necessary data for handling io voltage domains on the rk3399.
> As interesting tidbit, the rk3399 contains two separate iodomain areas.
> One in the regular General Register Files (GRF) and one in PMUGRF in the
> pmu power domain.
> 
> Signed-off-by: David Wu <david.wu@...k-chips.com>

looks good, so
Reviewed-by: Heiko Stuebner <heiko@...ech.de>


Heiko

> ---
>  .../bindings/power/rockchip-io-domain.txt          | 11 ++++
>  drivers/power/avs/rockchip-io-domain.c             | 58
> ++++++++++++++++++++++ 2 files changed, 69 insertions(+)
>  mode change 100644 => 100755 drivers/power/avs/rockchip-io-domain.c
> 
> diff --git a/Documentation/devicetree/bindings/power/rockchip-io-domain.txt
> b/Documentation/devicetree/bindings/power/rockchip-io-domain.txt index
> b8627e7..c84fb47 100644
> --- a/Documentation/devicetree/bindings/power/rockchip-io-domain.txt
> +++ b/Documentation/devicetree/bindings/power/rockchip-io-domain.txt
> @@ -35,6 +35,8 @@ Required properties:
>    - "rockchip,rk3288-io-voltage-domain" for rk3288
>    - "rockchip,rk3368-io-voltage-domain" for rk3368
>    - "rockchip,rk3368-pmu-io-voltage-domain" for rk3368 pmu-domains
> +  - "rockchip,rk3399-io-voltage-domain" for rk3399
> +  - "rockchip,rk3399-pmu-io-voltage-domain" for rk3399 pmu-domains
>  - rockchip,grf: phandle to the syscon managing the "general register files"
> 
> 
> @@ -79,6 +81,15 @@ Possible supplies for rk3368 pmu-domains:
>  - pmu-supply:    The supply connected to PMUIO_VDD.
>  - vop-supply:    The supply connected to LCDC_VDD.
> 
> +Possible supplies for rk3399:
> +- bt656-supply:  The supply connected to APIO2_VDD.
> +- audio-supply:  The supply connected to APIO5_VDD.
> +- sdmmc-supply:  The supply connected to SDMMC0_VDD.
> +- gpio1830       The supply connected to APIO4_VDD.
> +
> +Possible supplies for rk3399 pmu-domains:
> +- pmu1830-supply:The supply connected to PMUIO2_VDD.
> +
>  Example:
> 
>  	io-domains {
> diff --git a/drivers/power/avs/rockchip-io-domain.c
> b/drivers/power/avs/rockchip-io-domain.c old mode 100644
> new mode 100755
> index 8099456..8986382
> --- a/drivers/power/avs/rockchip-io-domain.c
> +++ b/drivers/power/avs/rockchip-io-domain.c
> @@ -47,6 +47,10 @@
>  #define RK3368_SOC_CON15_FLASH0		BIT(14)
>  #define RK3368_SOC_FLASH_SUPPLY_NUM	2
> 
> +#define RK3399_PMUGRF_CON0		0x180
> +#define RK3399_PMUGRF_CON0_VSEL		BIT(8)
> +#define RK3399_PMUGRF_VSEL_SUPPLY_NUM	9
> +
>  struct rockchip_iodomain;
> 
>  /**
> @@ -181,6 +185,25 @@ static void rk3368_iodomain_init(struct
> rockchip_iodomain *iod) dev_warn(iod->dev, "couldn't update flash0
> ctrl\n");
>  }
> 
> +static void rk3399_pmu_iodomain_init(struct rockchip_iodomain *iod)
> +{
> +	int ret;
> +	u32 val;
> +
> +	/* if no pmu io supply we should leave things alone */
> +	if (!iod->supplies[RK3399_PMUGRF_VSEL_SUPPLY_NUM].reg)
> +		return;
> +
> +	/*
> +	 * set pmu io iodomain to also use this framework
> +	 * instead of a special gpio.
> +	 */
> +	val = RK3399_PMUGRF_CON0_VSEL | (RK3399_PMUGRF_CON0_VSEL << 16);
> +	ret = regmap_write(iod->grf, RK3399_PMUGRF_CON0, val);
> +	if (ret < 0)
> +		dev_warn(iod->dev, "couldn't update pmu io iodomain ctrl\n");
> +}
> +
>  /*
>   * On the rk3188 the io-domains are handled by a shared register with the
>   * lower 8 bits being still being continuing drive-strength settings.
> @@ -252,6 +275,33 @@ static const struct rockchip_iodomain_soc_data
> soc_data_rk3368_pmu = { },
>  };
> 
> +static const struct rockchip_iodomain_soc_data soc_data_rk3399 = {
> +	.grf_offset = 0xe640,
> +	.supply_names = {
> +		"bt656",		/* APIO2_VDD */
> +		"audio",		/* APIO5_VDD */
> +		"sdmmc",		/* SDMMC0_VDD */
> +		"gpio1830",		/* APIO4_VDD */
> +	},
> +};
> +
> +static const struct rockchip_iodomain_soc_data soc_data_rk3399_pmu = {
> +	.grf_offset = 0x180,
> +	.supply_names = {
> +		NULL,
> +		NULL,
> +		NULL,
> +		NULL,
> +		NULL,
> +		NULL,
> +		NULL,
> +		NULL,
> +		NULL,
> +		"pmu1830",		/* PMUIO2_VDD */
> +	},
> +	.init = rk3399_pmu_iodomain_init,
> +};
> +
>  static const struct of_device_id rockchip_iodomain_match[] = {
>  	{
>  		.compatible = "rockchip,rk3188-io-voltage-domain",
> @@ -269,6 +319,14 @@ static const struct of_device_id
> rockchip_iodomain_match[] = { .compatible =
> "rockchip,rk3368-pmu-io-voltage-domain",
>  		.data = (void *)&soc_data_rk3368_pmu
>  	},
> +	{
> +		.compatible = "rockchip,rk3399-io-voltage-domain",
> +		.data = (void *)&soc_data_rk3399
> +	},
> +	{
> +		.compatible = "rockchip,rk3399-pmu-io-voltage-domain",
> +		.data = (void *)&soc_data_rk3399_pmu
> +	},
>  	{ /* sentinel */ },
>  };
>  MODULE_DEVICE_TABLE(of, rockchip_iodomain_match);