linux-kernel - [PATCH 1/2] arm64: dts: mt8173: elm: Set uart0 to mmio32 iotype

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Date:   Thu, 10 Sep 2020 13:46:34 +0800
From:   Hsin-Yi Wang <hsinyi@...omium.org>
To:     linux-mediatek@...ts.infradead.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>
Subject: [PATCH 1/2] arm64: dts: mt8173: elm: Set uart0 to mmio32 iotype

Set uart0 iotype to mmio32 to make earlycon work with stdout-path.

Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
---
 arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
index a5a12b2599a4a..d54e62f72c65d 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
@@ -1160,6 +1160,8 @@ &thermal {
 };
 
 &uart0 {
+	reg-io-width = <4>;
+	reg-shift = <2>;
 	status = "okay";
 };
 
-- 
2.28.0.526.ge36021eeef-goog