linux-kernel - Re: [PATCH] arm64: dts: ls1028a: fix reboot node

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Date:   Wed, 11 Dec 2019 10:17:23 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Michael Walle <michael@...le.cc>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Li Yang <leoyang.li@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH] arm64: dts: ls1028a: fix reboot node

On Mon, Dec 09, 2019 at 10:02:02AM +0100, Michael Walle wrote:
> Am 2019-12-09 04:47, schrieb Shawn Guo:
> >On Sat, Nov 23, 2019 at 01:07:09AM +0100, Michael Walle wrote:
> >>The reboot register isn't located inside the DCFG controller,
> >>but in its
> >>own RST controller. Fix it.
> >>
> >>Signed-off-by: Michael Walle <michael@...le.cc>
> >>---
> >> arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 8 +++++++-
> >> 1 file changed, 7 insertions(+), 1 deletion(-)
> >>
> >>diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> >>b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> >>index 72b9a75976a1..dc75534a4754 100644
> >>--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> >>+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> >>@@ -102,7 +102,7 @@
> >>
> >> 	reboot {
> >> 		compatible ="syscon-reboot";
> >>-		regmap = <&dcfg>;
> >>+		regmap = <&rst>;
> >> 		offset = <0xb0>;
> >> 		mask = <0x02>;
> >> 	};
> >>@@ -161,6 +161,12 @@
> >> 			big-endian;
> >> 		};
> >>
> >>+		rst: syscon@...0000 {
> >>+			compatible = "fsl,ls1028a-rst", "syscon";
> >
> >Compatible "fsl,ls1028a-rst" seems undocumented?
> 
> it is the same with fsl,ls1028a-scfg and fsl,ls1028a-dcfg. So maybe
> I should just drop the "fsl,ls1028a-rst". What do you think?

Drop it or document it.  I'm fine with either way.

Shawn