[PATCH 2/2] ARM: dts: imx8mm-beacon: add UHS and HS400/HS400ES properties

[Fabio Estevam]

On Wed, Dec 30, 2020 at 11:45 AM Adam Ford <aford173 at gmail.com> wrote:

> Linux doesn't appear to need it, and no 64-bit imx boards in Linux
> appear to use them.  Some layerscape boards appear to use these flags.
> If it's not necessary for Linux, but it is necessary for U-Boot, it
> seems like the -u-boot.dtsi file is the right place to put it.
> It's consistent with that was done for the imx8mm-evk-u-boot.dtsi and others [1]

IMHO the device trees should be the same for Linux and U-Boot as much as we can.

Of course, it is OK to add custom U-Boot properties, such as
u-boot,dm-spl inside -u-boot.dtsi file, but adding MMC related
properties only in U-Boot dtsi does not seem correct.

It would be nice if someone could investigate what is missing in the
U-Boot sdhc driver to handle these modes by default.