[PATCH] arm64: tegra: Add ID EEPROMs on Jetson AGX Xavier

[Thierry Reding]

From: Thierry Reding <treding at nvidia.com>

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 at nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi    | 15 +++++++++++++++
 .../arm64/boot/dts/nvidia/tegra194-p2972-0000.dts | 13 +++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
index 4c005b811233..0ea0bd83cb8e 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
@@ -57,6 +57,21 @@ serial at 3110000 {
 			status = "okay";
 		};
 
+		i2c at 3160000 {
+			status = "okay";
+
+			eeprom at 50 {
+				compatible = "atmel,24c02";
+				reg = <0x50>;
+
+				vcc-supply = <&vdd_1v8ls>;
+				address-width = <8>;
+				pagesize = <8>;
+				size = <256>;
+				read-only;
+			};
+		};
+
 		/* SDMMC1 (SD/MMC) */
 		mmc at 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 90b6ea5467fa..4d8a0e10250f 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 @@ interrupt-controller at 2a40000 {
 			};
 		};
 
+		i2c at 3160000 {
+			eeprom at 56 {
+				compatible = "atmel,24c02";
+				reg = <0x56>;
+
+				vcc-supply = <&vdd_1v8ls>;
+				address-width = <8>;
+				pagesize = <8>;
+				size = <256>;
+				read-only;
+			};
+		};
+
 		ddc: i2c at 31c0000 {
 			status = "okay";
 		};
-- 
2.27.0