[PATCH] arm64: dts: marvell: add UART muxing on Armada 7K/8K

[Thomas Petazzoni]

This commit adds the relevant details in the Armada 7K/8K Device Tree
to properly mux the UART used for the serial console. Since there is
basically only one possible muxing for the UART0 on the AP, the muxing
configuration is described in armada-ap806.dtsi, and selected from the
individual boards (other boards could be using a different UART).

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
---
 arch/arm64/boot/dts/marvell/armada-7040-db.dts    | 2 ++
 arch/arm64/boot/dts/marvell/armada-8040-db.dts    | 2 ++
 arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts | 2 ++
 arch/arm64/boot/dts/marvell/armada-ap806.dtsi     | 5 +++++
 4 files changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-7040-db.dts b/arch/arm64/boot/dts/marvell/armada-7040-db.dts
index 9c3bdf8..64a8e02 100644
--- a/arch/arm64/boot/dts/marvell/armada-7040-db.dts
+++ b/arch/arm64/boot/dts/marvell/armada-7040-db.dts
@@ -124,6 +124,8 @@
 
 &uart0 {
 	status = "okay";
+	pinctrl-0 = <&uart0_pins>;
+	pinctrl-names = "default";
 };
 
 
diff --git a/arch/arm64/boot/dts/marvell/armada-8040-db.dts b/arch/arm64/boot/dts/marvell/armada-8040-db.dts
index 0d7b2ae..2a9b68e 100644
--- a/arch/arm64/boot/dts/marvell/armada-8040-db.dts
+++ b/arch/arm64/boot/dts/marvell/armada-8040-db.dts
@@ -139,6 +139,8 @@
 /* Accessible over the mini-USB CON9 connector on the main board */
 &uart0 {
 	status = "okay";
+	pinctrl-0 = <&uart0_pins>;
+	pinctrl-names = "default";
 };
 
 
diff --git a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts b/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts
index 21fb721..ac7438e 100644
--- a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts
+++ b/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts
@@ -101,6 +101,8 @@
 
 &uart0 {
 	status = "okay";
+	pinctrl-0 = <&uart0_pins>;
+	pinctrl-names = "default";
 };
 
 &ap_sdhci0 {
diff --git a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
index 4d36071..1eb51e0 100644
--- a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
@@ -263,6 +263,11 @@
 
 				ap_pinctrl: pinctrl {
 					compatible = "marvell,ap806-pinctrl";
+
+					uart0_pins: uart0-pins {
+						marvell,pins = "mpp11", "mpp19";
+						marvell,function = "uart0";
+					};
 				};
 
 				ap_gpio: gpio {
-- 
2.9.4