On 05/04/2023 20:24, Christoph Niedermaier wrote: > From: Marek Vasut [mailto:marex@xxxxxxx] > Sent: Wednesday, April 5, 2023 6:25 PM >> On 4/5/23 18:02, Christoph Niedermaier wrote: >> >> [...] >> >>> +/ { >>> + model = "DH electronics i.MX6ULL DHCOR on maveo box"; >>> + compatible = "dh,imx6ull-dhcor-maveo-box", "dh,imx6ull-dhcor-som", >>> + "fsl,imx6ull"; >>> + >>> + aliases { >>> + /delete-property/ mmc0; /* Avoid double definitions */ >>> + /delete-property/ mmc1; >>> + mmc2 = &usdhc2; /* eMMC should be mmc2 */ >> >> Why not mmc0 ? >> >> Use root=PARTUUID= when booting to avoid any dependency on >> root=/dev/mmcblk2pN enumeration. > > This is due to software interchangeability with the DHCOM > i.MX6ULL, where the eMMC is always mmc2. That's not the reason to have aliases. The number should match numbering in your datasheet/schematics/user-guide, not what your software wants. Use PARTUUID for SW dependencies. Best regards, Krzysztof
