ARM64: dts: marvell: armada-3720-db: add gpio expander

A gpio expander is present on the i2c bus on the Armada 3720 DB board. This
patch add it to the device tree.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

diff --git a/arch/arm64/boot/dts/marvell/armada-3720-db.dts b/arch/arm64/boot/dts/marvell/armada-3720-db.dts
index 86602c9..864936a 100644 (file)
--- a/arch/arm64/boot/dts/marvell/armada-3720-db.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-db.dts
@@ -64,6 +64,24 @@
 
 &i2c0 {
        status = "okay";
+
+       gpio_exp: pca9555@22 {
+               compatible = "nxp,pca9555";
+               gpio-controller;
+               #gpio-cells = <2>;
+
+               reg = <0x22>;
+               /*
+                * IO0_0: PWR_EN_USB2   IO1_0: PWR_EN_VTT
+                * IO0_1: PWR_EN_USB23  IO1_1: MPCIE_WDISABLE
+                * IO0_2: PWR_EN_SATA   IO1_2: RGMII_DEV_RSTN
+                * IO0_3: PWR_EN_PCIE   IO1_3: SGMII_DEV_RSTN
+                * IO0_4: PWR_EN_SD
+                * IO0_5: PWR_EN_EMMC
+                * IO0_6: PWR_EN_RGMII  IO1_6: SATA_USB3.0_SEL
+                * IO0_7: PWR_EN_SGMII  IO1_7: PWR_MCI_PS
+                */
+       };
 };
 
 /* CON3 */