[PATCH v5 7/9] ARM: shmobile: Add PCIe device tree nodes for R8A7791 Koelsch board

[Phil Edworthy]

This patch adds the device tree nodes for the R8A7791 Koelsch board

Signed-off-by: Phil Edworthy <phil.edworthy at renesas.com>
---
v5:
 - Renesas SoCs compatible string has peripheral before device name
 - Add PCIe bus clock reference
 - Add additional interrupt bindings
 - Use dma-ranges property to specify inbound memory regions
---
 arch/arm/boot/dts/r8a7791-koelsch.dts | 14 ++++++++++++++
 arch/arm/boot/dts/r8a7791.dtsi        | 24 ++++++++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
index ee23b7b..3130a0c 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
@@ -204,6 +204,16 @@
 		states = <3300000 1
 			  1800000 0>;
 	};
+
+	clocks {
+		/* External PCIe bus clock */
+		pcie_bus_clk: pcie_bus_clk {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <100000000>;
+			clock-output-names = "pcie_bus";
+		};
+	};
 };
 
 &extal_clk {
@@ -382,3 +392,7 @@
 		spi-cpha;
 	};
 };
+
+&pcie {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
index ccfba57..7a4be4c 100644
--- a/arch/arm/boot/dts/r8a7791.dtsi
+++ b/arch/arm/boot/dts/r8a7791.dtsi
@@ -836,4 +836,28 @@
 		#size-cells = <0>;
 		status = "disabled";
 	};
+
+	pcie: pcie at fe000000 {
+		compatible = "renesas,pcie-r8a7791";
+		reg = <0 0xfe000000 0 0x80000>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		device_type = "pci";
+		ranges = <0x01000000 0 0x00000000 0 0xfe100000 0 0x00100000
+			  0x02000000 0 0xfe200000 0 0xfe200000 0 0x00200000
+			  0x02000000 0 0x30000000 0 0x30000000 0 0x08000000
+			  0x42000000 0 0x38000000 0 0x38000000 0 0x08000000>;
+		/* Map all possible DDR as inbound ranges */
+		dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x80000000
+			      0x43000000 2 0x00000000 2 0x00000000 1 0x00000000>;
+		interrupts = <0 116 IRQ_TYPE_LEVEL_HIGH
+			      0 117 IRQ_TYPE_LEVEL_HIGH
+			      0 118 IRQ_TYPE_LEVEL_HIGH>;
+		#interrupt-cells = <1>;
+		interrupt-map-mask = <0 0 0 0>;
+		interrupt-map = <0 0 0 0 &gic 0 116 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp3_clks R8A7791_CLK_PCIE>, <&pcie_bus_clk>;
+		clock-names = "pcie", "pcie_bus";
+		status = "disabled";
+	};
 };
-- 
1.9.0