[U-Boot] [PATCH v2 5/8] arm: dts: imx7s-warp: Create alias for mmc0 to &usdhc3

[Bryan O'Donoghue]

This patch sets up an alias for mmc0 to usdhc3.

Before the DM conversion only usdhc3 was enabled and therefore it appeared
as MMC 0 to u-boot. After enabling MMC DM though usdhc3 defaults to MMC 2,
which left unattended would drive changes to existing warp7 bootscripts and
environment variables that rely on mmc 0.

Setup the alias of mmc0 and usdhc3 so that existing warp7 boot code will
work unmodified.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>
Cc: Albert Aribaud <albert.u.boot at aribaud.net>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Fabio Estevam <fabio.estevam at nxp.com>
Cc: Stefano Babic <sbabic at denx.de>
---
 arch/arm/dts/imx7s-warp.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/dts/imx7s-warp.dts b/arch/arm/dts/imx7s-warp.dts
index f7ba2c0a24..d28b7ec715 100644
--- a/arch/arm/dts/imx7s-warp.dts
+++ b/arch/arm/dts/imx7s-warp.dts
@@ -17,6 +17,10 @@
 		reg = <0x80000000 0x20000000>;
 	};
 
+	aliases {
+		mmc0 = &usdhc3;
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 		pinctrl-0 = <&pinctrl_gpio>;
-- 
2.20.0