linux-kernel - [PATCH v1 3/3] arm64: dts: ls1028a: add efuse node

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Message-Id: <20220127163728.3650648-4-michael@walle.cc>
Date:   Thu, 27 Jan 2022 17:37:28 +0100
From:   Michael Walle <michael@...le.cc>
To:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>, Li Yang <leoyang.li@....com>,
        Michael Walle <michael@...le.cc>
Subject: [PATCH v1 3/3] arm64: dts: ls1028a: add efuse node

Layerscape SoCs contain a Security Fuse Processor which is basically a
efuse controller. Add the node, so userspace can read the efuses.

Signed-off-by: Michael Walle <michael@...le.cc>
---
 arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
index 7d44102d9c6c..4b248cee830a 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
@@ -224,6 +224,17 @@ rst: syscon@...0000 {
 			little-endian;
 		};
 
+		efuse@...0000 {
+			compatible = "fsl,ls1028a-sfp";
+			reg = <0x0 0x1e80000 0x0 0x10000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			ls1028a_uid: unique-id@1c {
+				reg = <0x1c 0x8>;
+			};
+		};
+
 		scfg: syscon@...0000 {
 			compatible = "fsl,ls1028a-scfg", "syscon";
 			reg = <0x0 0x1fc0000 0x0 0x10000>;
-- 
2.30.2