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arm64: dts: amlogic: Assign a fixed index to mmc devices

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Recently introduced async probe on mmc devices can shuffle block IDs.
Pin them to fixed values to ease booting in environments where UUIDs
are not practical. Use newly introduced aliases for mmcblk devices from [1].
[1]
https://patchwork.kernel.org/patch/11747669/

Commit message taken from commit 0011c6d182 ("arm64: dts: rockchip: Assign a fixed index to mmc devices on rk3399 boards.")

The unconventional order (B, C, A) is due to the fact that sd_emmc_a is
(according to the comments) only used for SDIO.

AFAICS all boards either have both sd_emmc_b and sd_emmc_c or only one of
them enabled. So the alias order should match the previous non-async order
for all of them.

Signed-off-by: Alexander Stein <alexander.stein@mailbox.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20210203192824.854491-1-alexander.stein@mailbox.org
This commit is contained in:
Alexander Stein 2021-02-03 20:28:24 +01:00 committed by Kevin Hilman
parent 0e9fed92c6
commit ab547c4fb3
2 changed files with 12 additions and 0 deletions
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6
arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
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@ -17,6 +17,12 @@
#address-cells = <2>;
#size-cells = <2>;
aliases {
mmc0 = &sd_emmc_b; /* SD card */
mmc1 = &sd_emmc_c; /* eMMC */
mmc2 = &sd_emmc_a; /* SDIO */
};
chosen {
#address-cells = <2>;
#size-cells = <2>;

6
arch/arm64/boot/dts/amlogic/meson-gx.dtsi
View File

@ -20,6 +20,12 @@
#address-cells = <2>;
#size-cells = <2>;
aliases {
mmc0 = &sd_emmc_b; /* SD card */
mmc1 = &sd_emmc_c; /* eMMC */
mmc2 = &sd_emmc_a; /* SDIO */
};
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;