| Message ID | 960595394a274b675f1ec9ec1c324e4cc1ac1f77.1706796660.git.geert+renesas@glider.be (mailing list archive) |
|---|---|
| State | Mainlined |
| Commit | 7102e3f9ef71c21dc25813cb4fb42f04fea6367d |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | arm64: dts: renesas: r8a779h0/gray-hawk-single: Add I2C and EEPROM support | expand |
On Thu, Feb 01, 2024 at 03:14:34PM +0100, Geert Uytterhoeven wrote: > Enable the I2C0 bus on the Gray Hawk Single board, and describe the I2C > EEPROMs present. > > Based on patches for Gray Hawk in the BSP by Hai Pham. > > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
diff --git a/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts b/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts index 1c84fe7171d3fd85..1bee27b2284d2eee 100644 --- a/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts +++ b/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts @@ -50,6 +50,42 @@ &hscif0 { status = "okay"; }; +&i2c0 { + pinctrl-0 = <&i2c0_pins>; + pinctrl-names = "default"; + + status = "okay"; + clock-frequency = <400000>; + + eeprom@50 { + compatible = "rohm,br24g01", "atmel,24c01"; + label = "cpu-board"; + reg = <0x50>; + pagesize = <8>; + }; + + eeprom@51 { + compatible = "rohm,br24g01", "atmel,24c01"; + label = "breakout-board"; + reg = <0x51>; + pagesize = <8>; + }; + + eeprom@52 { + compatible = "rohm,br24g01", "atmel,24c01"; + label = "csi-dsi-sub-board-id"; + reg = <0x52>; + pagesize = <8>; + }; + + eeprom@53 { + compatible = "rohm,br24g01", "atmel,24c01"; + label = "ethernet-sub-board-id"; + reg = <0x53>; + pagesize = <8>; + }; +}; + &pfc { pinctrl-0 = <&scif_clk_pins>; pinctrl-names = "default"; @@ -59,6 +95,11 @@ hscif0_pins: hscif0 { function = "hscif0"; }; + i2c0_pins: i2c0 { + groups = "i2c0"; + function = "i2c0"; + }; + scif_clk_pins: scif_clk { groups = "scif_clk"; function = "scif_clk";
Enable the I2C0 bus on the Gray Hawk Single board, and describe the I2C EEPROMs present. Based on patches for Gray Hawk in the BSP by Hai Pham. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- The Gray Hawk Single documentation does not mention the purpose of the I2C EEPROMs, but the schematics label the last two as "Board ID". The labels match the corresponding EEPROMs on the White Hawk CPU and BreakOut board stack, from which the Gray Hawk Single board is derived. --- .../dts/renesas/r8a779h0-gray-hawk-single.dts | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+)