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

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Date:   Tue, 14 Jun 2022 11:12:08 -0300
From:   Ariel D'Alessandro <ariel.dalessandro@...labora.com>
To:     krzysztof.kozlowski+dt@...aro.org, nsaenz@...nel.org,
        robh+dt@...nel.org
Cc:     bcm-kernel-feedback-list@...adcom.com, devicetree@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        pbrobinson@...il.com, f.fainelli@...il.com, stefan.wahren@...e.com
Subject: [PATCH] ARM: dts: bcm2711-rpi: Use aliases to set custom MMC device index

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

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@...labora.com>
---

Changes in v2:
* Moved alias from bcm2711-rpi-4-b.dts to bcm2711-rpi.dtsi

 arch/arm/boot/dts/bcm2711-rpi.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/bcm2711-rpi.dtsi b/arch/arm/boot/dts/bcm2711-rpi.dtsi
index ca266c5d9f9b..a39b2f68e4cc 100644
--- a/arch/arm/boot/dts/bcm2711-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2711-rpi.dtsi
@@ -13,6 +13,7 @@ memory@0 {
 	aliases {
 		emmc2bus = &emmc2bus;
 		ethernet0 = &genet;
+		mmc0 = &emmc2;	/* mmcblk0 for eMMC/SD */
 		pcie0 = &pcie0;
 		blconfig = &blconfig;
 	};
-- 
2.34.1