arm64: dts: renesas: spider-cpu: Add I2C4 and EEPROMs

Enable the I2C4 bus on the Falcon CPU board, and describe the I2C EEPROMs
present on the Spider CPU and BreakOut boards.

Extracted from a larger patch in the BSP by LUU HOAI.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/6d8917e49f83b6a932970ca169100eb086d11f16.1643898884.git.geert+renesas@glider.be

diff --git a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
index 6e07c54..41aa859 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
@@ -31,10 +31,30 @@
        clock-frequency = <32768>;
 };
 
+&i2c4 {
+       pinctrl-0 = <&i2c4_pins>;
+       pinctrl-names = "default";
+
+       status = "okay";
+       clock-frequency = <400000>;
+
+       eeprom@50 {
+               compatible = "rohm,br24g01", "atmel,24c01";
+               label = "cpu-board";
+               reg = <0x50>;
+               pagesize = <8>;
+       };
+};
+
 &pfc {
        pinctrl-0 = <&scif_clk_pins>;
        pinctrl-names = "default";
 
+       i2c4_pins: i2c4 {
+               groups = "i2c4";
+               function = "i2c4";
+       };
+
        scif3_pins: scif3 {
                groups = "scif3_data", "scif3_ctrl";
                function = "scif3";

diff --git a/arch/arm64/boot/dts/renesas/r8a779f0-spider.dts b/arch/arm64/boot/dts/renesas/r8a779f0-spider.dts
index f286254..78c4730 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a779f0-spider.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779f0-spider.dts
@@ -20,3 +20,12 @@
                stdout-path = "serial0:115200n8";
        };
 };
+
+&i2c4 {
+       eeprom@51 {
+               compatible = "rohm,br24g01", "atmel,24c01";
+               label = "breakout-board";
+               reg = <0x51>;
+               pagesize = <8>;
+       };
+};