ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue

MT8173 E1 chip has one bug that if turn off USB power domain, vcore
power will also be off, thus cause modules using vcore power domain
fail, like MMC. The E1 chip only found on MT8173-evb board and this
board only has E1 chip, so implement this as a board specific
workaround.

Pwrapper use vcore power, so add pwrapper using USB power domain to
keep USB power domain not to zero and disabled.

Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
index e427f04a9f450a3c7bf429e9ef29529f39c8baf2..7453a47b3047ef12ef6e73d12da4ed4c08babe3c 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
@@ -214,6 +214,9 @@
 };
 
 &pwrap {
+       /* Only MT8173 E1 needs USB power domain */
+       power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>;
+
        pmic: mt6397 {
                compatible = "mediatek,mt6397";
                interrupt-parent = <&pio>;