From bc15e30346e9ed181b74045e64fc496f9c4ce086 Mon Sep 17 00:00:00 2001
From: Weijie Gao <weijie.gao@mediatek.com>
Date: Fri, 9 Sep 2022 19:59:33 +0800
Subject: [PATCH] arm: dts: mt7622: force high-speed mode for uart

The input clock for uart is too slow (25MHz) which introduces frequent data
error on both receiving and transmitting even if the baudrate is 115200.

Using high-speed can significantly solve this issue.

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
---
 arch/arm/dts/mt7622.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/dts/mt7622.dtsi b/arch/arm/dts/mt7622.dtsi
index 0127474c95..fb6c1b7154 100644
--- a/arch/arm/dts/mt7622.dtsi
+++ b/arch/arm/dts/mt7622.dtsi
@@ -175,6 +175,7 @@
 		status = "disabled";
 		assigned-clocks = <&topckgen CLK_TOP_AXI_SEL>;
 		assigned-clock-parents = <&topckgen CLK_TOP_SYSPLL1_D2>;
+		mediatek,force-highspeed;
 	};
 
 	mmc0: mmc@11230000 {
-- 
2.39.5