* [PATCH v3] arm64: dts: rockchip: add EEPROM node for NanoPi R4S
@ 2021-06-20 4:38 Tianling Shen
0 siblings, 0 replies; only message in thread
From: Tianling Shen @ 2021-06-20 4:38 UTC (permalink / raw)
To: Rob Herring, Heiko Stuebner, Tianling Shen, Jensen Huang,
Pavel Machek, Marty Jones, Chen-Yu Tsai
Cc: devicetree, linux-arm-kernel, linux-rockchip, linux-kernel
NanoPi R4S has a EEPROM attached to the 2nd I2C bus (U92), which
stores the MAC address.
Changes in v3:
- Added address-cells and size-cells
Changes in v2:
- Added the size of EEPROM
- Added `mac-address` cell to pass the MAC address to kernel
- Removed `read-only` property in EEPROM node
Signed-off-by: Tianling Shen <cnsztl@gmail.com>
---
.../boot/dts/rockchip/rk3399-nanopi-r4s.dts | 20 +++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
index cef4d18b599d..2813c4a0378d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
@@ -68,6 +68,26 @@
status = "disabled";
};
+&gmac {
+ nvmem-cells = <&mac_address>;
+ nvmem-cells-names = "mac-address";
+};
+
+&i2c2 {
+ eeprom@51 {
+ compatible = "microchip,24c02", "atmel,24c02";
+ reg = <0x51>;
+ pagesize = <16>;
+ size = <256>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ mac_address: mac-address@fa {
+ reg = <0xfa 0x06>;
+ };
+ };
+};
+
&i2c4 {
status = "disabled";
};
--
2.17.1
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