Re: [PATCH] ARM: dts: exynos: Assign a fixed index to mmc devices on exynos4412 based ODROID boards

From: Marek Szyprowski
Date: Wed Nov 04 2020 - 07:25:56 EST


Hi Markus,

On 04.11.2020 11:25, Markus Reichl wrote:
> Recently introduced async probe on mmc devices can shuffle block IDs.
> Pin them to fixed values to ease booting in evironments where UUIDs ar not practical.
> Use newly introduced aliases for mmcblk devices from [1].
>
> [1]
> https://patchwork.kernel.org/patch/11747669/
>
> Signed-off-by: Markus Reichl <m.reichl@xxxxxxxxxxxxx>
> ---
> arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> index a5c1ce1e396c..aa10d5bc7e1c 100644
> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> @@ -13,6 +13,11 @@
> #include "exynos-mfc-reserved-memory.dtsi"
>
> / {
> + aliases {
> + mmc0 = &sdhci_2;
> + mmc1 = &mshc_0;

Like in the OdroidXU3-family patch, I would use 0 for the eMMC (mshc_0)
and 2 for the SD-card (sdhci_2).

> + };
> +
> chosen {
> stdout-path = &serial_1;
> };

Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland