linux-kernel - Re: [PATCH v4 4/4] ARM: dts: Specify VMMC and VQMMC on rk3288-evb

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Date:	Thu, 12 Mar 2015 00:30:14 +0100
From:	Heiko Stuebner <heiko@...ech.de>
To:	Doug Anderson <dianders@...omium.org>
Cc:	Ulf Hansson <ulf.hansson@...aro.org>,
	Jaehoon Chung <jh80.chung@...sung.com>,
	Seungwon Jeon <tgih.jun@...sung.com>,
	Mark Brown <broonie@...nel.org>,
	Alexandru Stan <amstan@...omium.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Sonny Rao <sonnyrao@...omium.org>,
	Andrew Bresticker <abrestic@...omium.org>,
	Addy Ke <addy.ke@...k-chips.com>,
	javier.martinez@...labora.co.uk,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linux@....linux.org.uk, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 4/4] ARM: dts: Specify VMMC and VQMMC on rk3288-evb

Am Mittwoch, 11. März 2015, 15:15:17 schrieb Doug Anderson:
> Specifying these rails should eventually let us do UHS.
> 
> Signed-off-by: Doug Anderson <dianders@...omium.org>

This one looks good to me and I'll take it into my dts branch.

But due to the deferal issue fixed in patch1, I'll wait a bit for patch1 
hopefully getting applied, so that we have a "clean" behaviour when everything 
reaches linux-next.

> ---
> Changes in v4:
> - Add vcc_sd regulator which is present on EVB 2.0 boards
> 
> Changes in v3: None
> Changes in v2:
> - Fix subject line
> 
>  arch/arm/boot/dts/rk3288-evb.dtsi | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/rk3288-evb.dtsi
> b/arch/arm/boot/dts/rk3288-evb.dtsi index 5e895a5..6d4ae9f 100644
> --- a/arch/arm/boot/dts/rk3288-evb.dtsi
> +++ b/arch/arm/boot/dts/rk3288-evb.dtsi
> @@ -103,6 +103,23 @@
>  		regulator-always-on;
>  		regulator-boot-on;
>  	};
> +
> +	/*
> +	 * NOTE: vcc_sd isn't hooked up on v1.0 boards where power comes from
> +	 * vcc_io directly.  Those boards won't be able to power cycle SD cards
> +	 * but it shouldn't hurt to toggle this pin there anyway.
> +	 */
> +	vcc_sd: sdmmc-regulator {
> +		compatible = "regulator-fixed";
> +		gpio = <&gpio7 11 GPIO_ACTIVE_LOW>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&sdmmc_pwr>;
> +		regulator-name = "vcc_sd";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		startup-delay-us = <100000>;
> +		vin-supply = <&vcc_io>;
> +	};
>  };
> 
>  &emmc {
> @@ -132,6 +149,8 @@
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
>  	status = "okay";
> +	vmmc-supply = <&vcc_sd>;
> +	vqmmc-supply = <&vccio_sd>;
>  };
> 
>  &i2c0 {
> @@ -223,6 +242,10 @@
>  		sdmmc_cmd: sdmmc-cmd {
>  			rockchip,pins = <6 21 RK_FUNC_1 &pcfg_pull_up_drv_8ma>;
>  		};
> +
> +		sdmmc_pwr: sdmmc-pwr {
> +			rockchip,pins = <7 11 RK_FUNC_GPIO &pcfg_pull_none>;
> +		};
>  	};
> 
>  	usb {

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