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Message-ID: <1798568.RumoICfKOO@phil>
Date: Tue, 06 Jan 2015 18:44:13 +0100
From: Heiko Stübner <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>,
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 v3 3/3] ARM: dts: Specify VMMC and VQMMC on rk3288-evb
Hi Doug,
Am Montag, 15. Dezember 2014, 16:22:20 schrieb Doug Anderson:
> Specifying these rails should eventually let us do UHS.
>
> Signed-off-by: Doug Anderson <dianders@...omium.org>
> ---
> Changes in v3: None
> Changes in v2:
> - Fix subject line
>
> arch/arm/boot/dts/rk3288-evb.dtsi | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/boot/dts/rk3288-evb.dtsi
> b/arch/arm/boot/dts/rk3288-evb.dtsi index 3e067dd..d660fe6 100644
> --- a/arch/arm/boot/dts/rk3288-evb.dtsi
> +++ b/arch/arm/boot/dts/rk3288-evb.dtsi
> @@ -114,6 +114,8 @@
> pinctrl-names = "default";
> pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
> status = "okay";
> + vmmc-supply = <&vcc_io>;
according to the schematics there is a switch between the card and vcc_io with
a controlling pin called SDMMC_PWR providing a supply called vcc_sd.
So there should probably be a fixed-regulator get introduced for this, like the
older rockchip boards do.
Heiko
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