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

Florian Fainelli f.fainelli at gmail.com
Mon Jun 13 16:34:12 PDT 2022


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 at collabora.com> 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



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