Re: [PATCH v3 3/3] ARM: dts: Specify VMMC and VQMMC on rk3288-evb
From: Doug Anderson
Date: Wed Mar 11 2015 - 18:14:04 EST
On Tue, Jan 6, 2015 at 9:44 AM, Heiko StÃbner <heiko@xxxxxxxxx> wrote:
> 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@xxxxxxxxxxxx>
>> 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.
OK, I found the problem. I've got a 1.0 board and the associated
schematics. Supporting your 2.0 board with the extra regulator should
be no problem though.
Patch coming up shortly.
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