R40 have a sata controller which is the same as A20.
This patch adds a DT node for it.

Signed-off-by: Icenowy Zheng <redacted>
Signed-off-by: Corentin Labbe <redacted>
---
 arch/arm/boot/dts/sun8i-r40.dtsi | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
index 852c2ccc3268..d6b5820da850 100644
--- a/arch/arm/boot/dts/sun8i-r40.dtsi
+++ b/arch/arm/boot/dts/sun8i-r40.dtsi

@@ -550,6 +550,29 @@
 			#size-cells = <0>;
 		};
 
+		ahci: sata@1c18000 {
+			compatible = "allwinner,sun8i-r40-ahci";
+			reg = <0x01c18000 0x1000>;
+			interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ccu CLK_BUS_SATA>, <&ccu CLK_SATA>;
+			resets = <&ccu RST_BUS_SATA>;
+			resets-name = "ahci";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+
+			sata_port: sata-port@0 {
+				reg = <0>;
+				phys = <&sata_phy>;
+			};
+		};
+
+		sata_phy: sata-phy@1c180c0  {
+			compatible = "allwinner,sun8i-r40-sata-phy";
+			reg = <0x1c180c0 0x200>;