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pico-imx7d: Convert DM MMC

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This patch enable convert DM MMC for imx7d-pico board and variant.

Before the DM conversion only usdhc3 was enabled and therefore it appeared
as MMC 0 to u-boot. After enabling MMC DM though usdhc3 defaults to MMC 2,
which left unattended would drive changes to existing pico-pi bootscripts and
environment variables that rely on mmc 0.

Setup the alias of mmc0 and usdhc3 so that existing pico-imx7d boot code will
work unmodified.

When converting to DM_MMC it is necessary that SPL initializes eMMC
by itself, so move the original eMMC initialization from U-Boot
proper to SPL.

Signed-off-by: Joris Offouga <offougajoris@gmail.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
This commit is contained in:
Joris Offouga
2019-04-04 14:00:55 +02:00
committed by Stefano Babic
parent 6988a3aff7
commit 4e267b92fb
6 changed files with 45 additions and 38 deletions
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configs/pico-hobbit-imx7d_defconfig
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@@ -34,6 +34,7 @@ CONFIG_CMD_SPL=y
CONFIG_CMD_SPL_WRITE_SIZE=0x20000
CONFIG_CMD_DFU=y
CONFIG_CMD_GPIO=y
CONFIG_DM_MMC=y
CONFIG_CMD_GPT=y
CONFIG_CMD_I2C=y
CONFIG_CMD_MMC=y