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

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Date:   Wed,  8 Jun 2022 09:32:33 -0300
From:   Ariel D'Alessandro <ariel.dalessandro@...labora.com>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org
Cc:     gbcm-kernel-feedback-list@...adcom.com,
        gkrzysztof.kozlowski+dt@...aro.org, gnsaenz@...nel.org,
        grobh+dt@...nel.org
Subject: [PATCH] ARM: dts: bcm2711-rpi-4-b: Use aliases to set custom MMC device index

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.

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@...labora.com>
---
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index 4432412044de..780812542bad 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -14,6 +14,10 @@ chosen {
 		stdout-path = "serial1:115200n8";
 	};
 
+	aliases {
+		mmc0 = &emmc2;	/* mmcblk0 for SD */
+	};
+
 	leds {
 		led-act {
 			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
-- 
2.34.1