[U-Boot] [PATCH v1 4/4] ARM: dts: Add STMFX gpio expander support for stm32mp157c-ev1

[Patrice Chotard]

From: Patrick Delaunay <patrick.delaunay at st.com>

Adds alias to set the pincontrol seq id.
For STMFX gpio expander, force sequence number after
the last bank (GPIOZ) to avoid conflict between STM32MP and STMFX
gpio bank sequence number.

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
Signed-off-by: Patrice Chotard <patrice.chotard at st.com>
---

 arch/arm/dts/stm32mp157c-ev1-u-boot.dtsi |  3 +++
 arch/arm/dts/stm32mp157c-ev1.dts         | 18 ++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/arch/arm/dts/stm32mp157c-ev1-u-boot.dtsi b/arch/arm/dts/stm32mp157c-ev1-u-boot.dtsi
index be3b1526288f..aafda5b58c0d 100644
--- a/arch/arm/dts/stm32mp157c-ev1-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp157c-ev1-u-boot.dtsi
@@ -7,8 +7,11 @@
 
 / {
 	aliases {
+		gpio26 = &stmfx_pinctrl;
 		i2c1 = &i2c2;
 		i2c4 = &i2c5;
+		pinctrl0 = &pinctrl;
+		pinctrl1 = &pinctrl_z;
 		spi0 = &qspi;
 	};
 };
diff --git a/arch/arm/dts/stm32mp157c-ev1.dts b/arch/arm/dts/stm32mp157c-ev1.dts
index e114c9b628b8..a6ee37924fe1 100644
--- a/arch/arm/dts/stm32mp157c-ev1.dts
+++ b/arch/arm/dts/stm32mp157c-ev1.dts
@@ -98,6 +98,24 @@
 	i2c-scl-rising-time-ns = <185>;
 	i2c-scl-falling-time-ns = <20>;
 	status = "okay";
+
+	stmfx: stmfx at 42 {
+		compatible = "st,stmfx-0300";
+		reg = <0x42>;
+		interrupts = <8 IRQ_TYPE_EDGE_RISING>;
+		interrupt-parent = <&gpioi>;
+		vdd-supply = <&v3v3>;
+
+		stmfx_pinctrl: stmfx-pin-controller {
+			compatible = "st,stmfx-0300-pinctrl";
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			gpio-ranges = <&stmfx_pinctrl 0 0 24>;
+			status = "disabled";
+		};
+	};
 };
 
 &i2c5 {
-- 
1.9.1