arm64: tegra: Add ID EEPROMs on Jetson AGX Xavier
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Message ID 20200803154430.734683-1-thierry.reding@gmail.com
State New
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Series
  • arm64: tegra: Add ID EEPROMs on Jetson AGX Xavier
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Commit Message

Thierry Reding Aug. 3, 2020, 3:44 p.m. UTC
From: Thierry Reding <treding@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@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(+)

Patch
diff mbox series

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@3110000 {
 			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 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@2a40000 {
 			};
 		};
 
+		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";
 		};