linux-kernel - [PATCH 4/4] arm64: dts: ti: k3-am62-wakeup: Add chip efuse nodes

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Date: Tue,  6 Feb 2024 15:37:11 +0100
From: Markus Schneider-Pargmann <msp@...libre.com>
To: Nishanth Menon <nm@...com>,
	Vignesh Raghavendra <vigneshr@...com>,
	Tero Kristo <kristo@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Santosh Shilimkar <ssantosh@...nel.org>
Cc: Andrew Davis <afd@...com>,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Markus Schneider-Pargmann <msp@...libre.com>
Subject: [PATCH 4/4] arm64: dts: ti: k3-am62-wakeup: Add chip efuse nodes

Add efuse nodes describing chip variant and speed grade.

Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
---
 arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi | 36 +++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
index fef76f52a52e..14419df43624 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
@@ -14,10 +14,44 @@ wkup_conf: syscon@...00000 {
 		#size-cells = <1>;
 		ranges = <0x0 0x00 0x43000000 0x20000>;
 
+		wkup_efuse: efuse@0 {
+			compatible = "socionext,uniphier-efuse";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = <0x0 0x200>;
+
+			nvmem-layout {
+				compatible = "fixed-layout";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				chip_manufacturer: jtagidmfg@14 {
+					reg = <0x14 0x2>;
+					bits = <1 11>;
+				};
+
+				chip_partno: jtagidpartno@15 {
+					reg = <0x15 0x3>;
+					bits = <4 16>;
+				};
+
+				chip_variant: jtagidvariant@17 {
+					reg = <0x17 0x1>;
+					bits = <4 4>;
+				};
+
+				chip_speed: jtaguseridspeed@18 {
+					reg = <0x18 0x4>;
+					bits = <6 5>;
+				};
+			};
+		};
+
 		chipid: chipid@14 {
 			bootph-all;
 			compatible = "ti,am654-chipid";
-			reg = <0x14 0x4>;
+			nvmem-cells = <&chip_variant>, <&chip_partno>, <&chip_manufacturer>;
+			nvmem-cell-names = "chipvariant", "chippartno", "chipmanufacturer";
 		};
 	};
 
-- 
2.43.0