[PATCH v2] arm64: dts: renesas: r8a779f0: Add GPIO nodes

[Geert Uytterhoeven]

Add device nodes for the General Purpose Input/Output (GPIO) blocks on
the Renesas R-Car S4-8 (R8A779F0) SoC.

Note that GPIO blocks 4-7 are not added, as they can only be accessed
from the Control Domain.

Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
Tested with i2c-gpio, by reading the contents from the I2C EEPROMs
connected to I2C4 (GP1_[89]) on the Spider development board.
Note that this requires manual setting of MOD_SEL1 to zero in U-Boot, as
the pin control driver does not handle this special case yet.

v2:
  - Drop gpio4-7],
  - Drop RFC,
  - Split series in DT bindings+driver series and DTS patch.
---
 arch/arm64/boot/dts/renesas/r8a779f0.dtsi | 60 +++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
index f4e549867371184c..e44b8a44919dc91d 100644
--- a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
@@ -75,6 +75,66 @@ pfc: pinctrl at e6050000 {
 			      <0 0xe6051000 0 0x16c>, <0 0xe6051800 0 0x16c>;
 		};
 
+		gpio0: gpio at e6050180 {
+			compatible = "renesas,gpio-r8a779f0",
+				     "renesas,rcar-gen4-gpio";
+			reg = <0 0xe6050180 0 0x54>;
+			interrupts = <GIC_SPI 822 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 915>;
+			power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>;
+			resets = <&cpg 915>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&pfc 0 0 21>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		gpio1: gpio at e6050980 {
+			compatible = "renesas,gpio-r8a779f0",
+				     "renesas,rcar-gen4-gpio";
+			reg = <0 0xe6050980 0 0x54>;
+			interrupts = <GIC_SPI 823 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 915>;
+			power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>;
+			resets = <&cpg 915>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&pfc 0 32 25>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		gpio2: gpio at e6051180 {
+			compatible = "renesas,gpio-r8a779f0",
+				     "renesas,rcar-gen4-gpio";
+			reg = <0 0xe6051180 0 0x54>;
+			interrupts = <GIC_SPI 824 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 915>;
+			power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>;
+			resets = <&cpg 915>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&pfc 0 64 17>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		gpio3: gpio at e6051980 {
+			compatible = "renesas,gpio-r8a779f0",
+				     "renesas,rcar-gen4-gpio";
+			reg = <0 0xe6051980 0 0x54>;
+			interrupts = <GIC_SPI 825 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 915>;
+			power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>;
+			resets = <&cpg 915>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&pfc 0 96 19>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
 		cpg: clock-controller at e6150000 {
 			compatible = "renesas,r8a779f0-cpg-mssr";
 			reg = <0 0xe6150000 0 0x4000>;
-- 
2.25.1