From: Thierry Reding <treding@nvidia.com>
Date: Mon, 3 Aug 2020 15:44:30 +0000 (+0200)
Subject: arm64: tegra: Add ID EEPROMs on Jetson AGX Xavier
X-Git-Tag: v5.10-rc1~26^2~33^2~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=228f1e6ab55f60f8cb3208dffc118afa6514b6af;p=thirdparty%2Flinux.git

arm64: tegra: Add ID EEPROMs on Jetson AGX Xavier

The P2888 processor module contains an EEPROM that provides means of
identifying the module. The P2822 carrier board contains the same EEPROM
with information identifying the carrier board. Both of them ar accessed
via the GEN_I2C1 bus.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
index 4c005b811233b..0ea0bd83cb8e1 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
@@ -57,6 +57,21 @@
 			status = "okay";
 		};
 
+		i2c@3160000 {
+			status = "okay";
+
+			eeprom@50 {
+				compatible = "atmel,24c02";
+				reg = <0x50>;
+
+				vcc-supply = <&vdd_1v8ls>;
+				address-width = <8>;
+				pagesize = <8>;
+				size = <256>;
+				read-only;
+			};
+		};
+
 		/* SDMMC1 (SD/MMC) */
 		mmc@3400000 {
 			cd-gpios = <&gpio TEGRA194_MAIN_GPIO(A, 0) GPIO_ACTIVE_LOW>;
diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts
index 90b6ea5467fad..4d8a0e10250fa 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts
@@ -23,6 +23,19 @@
 			};
 		};
 
+		i2c@3160000 {
+			eeprom@56 {
+				compatible = "atmel,24c02";
+				reg = <0x56>;
+
+				vcc-supply = <&vdd_1v8ls>;
+				address-width = <8>;
+				pagesize = <8>;
+				size = <256>;
+				read-only;
+			};
+		};
+
 		ddc: i2c@31c0000 {
 			status = "okay";
 		};