On 04.11.2020 14:13, Marek Szyprowski wrote: > On 04.11.2020 14:06, Markus Reichl wrote: >> Am 04.11.20 um 13:25 schrieb Marek Szyprowski: >>> 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). >> How to deal then with sdhci_0 (from exynos4.dtsi) vc. mshc_0 (from >> exynos4412.dts)? > sdhci_0 and mshc_0 both operate on the same physical MMC0 bus, so this > is not an issue. They cannot be used simultaneously. The latter is just > faster, the first one has been left there mainly for the software > compatibility. I've thought a bit more on this and I would simply prefer to add generic MMC aliases to the top-level Exynos dtsi files (3250, 4210, 4412, 5250, 5410, 5420) to keep Linux logical MMC bus numbers in sync with the HW bus numbers on all boards. Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland
