Re: [PATCH] ARM: dts: bcm2711-rpi-4-b: Use aliases to set custom MMC device index

From: Florian Fainelli
Date: Mon Jun 13 2022 - 19:34:31 EST


On 6/13/22 05:46, Ariel D'Alessandro wrote:
Hi Peter,

On 6/12/22 17:38, Peter Robinson wrote:
On Wed, Jun 8, 2022 at 1:35 PM Ariel D'Alessandro
<ariel.dalessandro@xxxxxxxxxxxxx> wrote:

Add MMC aliases to ensure that the /dev/mmcblk ID for SD card won't
change depending on the probe order of the MMC drivers.

Is the bcm2711-rpi.dtsi a better place for it given there's other
aliases there and it will be consistent across variations?

Yes, indeed, it makes sense moving it to bcm2711-rpi.dtsi

The other board what will be affected by this alias is the Raspberry Pi
Compute Module 4 IO Board, on which emmc2 is the eMMC. However, the
alias makes sense, to have that as the first mmc device.

Maybe we can add the alias as follows?

mmc0 = &emmc2; /* mmcblk0 for eMMC/SD */

You have made a typo on the bcm-kernel-feedback-list meaning that this won't reach the patchwork instance I use to manage and apply patches, can you please fix that up for your v2? Thanks!
--
Florian