On Thu, Jan 07, 2021 at 04:56:59PM +0000, Peter Geis wrote:
> Ouya fails to detect the eMMC module when booted via certain bootloaders.
> Fastboot and hard-kexec bootloaders fail while u-boot does not. It was
> discovered that the issue manifests if the sdmmc4 alternate configuration
> clock pin is input disabled.
>
> Ouya uses sdmmc4 in the primary pin configuration. It is unknown why this
> occurs, though it is likely related to other eMMC limitations experienced
> on Ouya.
>
> For now, fix it by enabling input on cam_mclk_pcc0.
>
> Fixes: d7195ac5c9c5 ("ARM: tegra: Add device-tree for Ouya")
> Reported-by: Matt Merhar <[email protected]>
> Tested-by: Matt Merhar <[email protected]>
> Signed-off-by: Peter Geis <[email protected]>
> ---
> Changes v3:
> Removed stable tag, applies to v5.11+ only
>
> Changes v2:
> -Added stable tag.
> -Improved commit message.
>
> arch/arm/boot/dts/tegra30-ouya.dts | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)Acked-by: Thierry Reding <[email protected]> Arnd, Olof, can you guys pick this up directly for v5.11, since I don't currently have any other fixes queued up? Here's a patchwork link: http://patchwork.ozlabs.org/project/linux-tegra/patch/[email protected]/ Thanks, Thierry > diff --git a/arch/arm/boot/dts/tegra30-ouya.dts > b/arch/arm/boot/dts/tegra30-ouya.dts > index 74da1360d297..0368b3b816ef 100644 > --- a/arch/arm/boot/dts/tegra30-ouya.dts > +++ b/arch/arm/boot/dts/tegra30-ouya.dts > @@ -4352,8 +4352,8 @@ cam_mclk_pcc0 { > nvidia,pins = "cam_mclk_pcc0"; > nvidia,function = "vi_alt3"; > nvidia,pull = <TEGRA_PIN_PULL_NONE>; > - nvidia,tristate = <TEGRA_PIN_ENABLE>; > - nvidia,enable-input = <TEGRA_PIN_DISABLE>; > + nvidia,tristate = <TEGRA_PIN_DISABLE>; > + nvidia,enable-input = <TEGRA_PIN_ENABLE>; > }; > pcc1 { > nvidia,pins = "pcc1"; > -- > 2.25.1 >
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