linux-kernel - [RESEND PATCH] arm64: dts: specify console via command line

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Date:   Wed, 11 Mar 2020 19:21:20 +0800
From:   Chunyan Zhang <zhang.lyra@...il.com>
To:     soc@...nel.org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     Arnd Bergmann <arnd@...db.de>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Chunyan Zhang <chunyan.zhang@...soc.com>
Subject: [RESEND PATCH] arm64: dts: specify console via command line

From: Chunyan Zhang <chunyan.zhang@...soc.com>

The SPRD serial driver need to know which serial port would be used as
console in an early period during initialization, otherwise console
init would fail since we added this feature[1].

So this patch add console to command line via devicetree.

[1] https://lore.kernel.org/lkml/20190826072929.7696-4-zhang.lyra@gmail.com/

Signed-off-by: Chunyan Zhang <chunyan.zhang@...soc.com>
---
I guess no comments on this, so resending this and add soc@...nel.org,
hope Arnd or Olof can help to merge into arch_arm tree.

Thanks,
Chunyan
---
 arch/arm64/boot/dts/sprd/sp9863a-1h10.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts b/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts
index 2047f7a74265..510f65f4d8b8 100644
--- a/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts
+++ b/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts
@@ -28,7 +28,7 @@
 
 	chosen {
 		stdout-path = "serial1:115200n8";
-		bootargs = "earlycon";
+		bootargs = "earlycon console=ttyS1";
 	};
 };
 
-- 
2.20.1