arm64: dts: qcom: sm8250: Add TLMM pinctrl node

Add the TLMM pinctrl node for SM8250 and reserve pins 28-31 and 40-43 on
the MTP as firmware does not allow Linux to touch these pins.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20200430181716.3797842-1-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/sm8250-mtp.dts

@@ -359,6 +359,10 @@
 	status = "okay";
 };
 
+&tlmm {
+	gpio-reserved-ranges = <28 4>, <40 4>;
+};
+
 &uart2 {
 	status = "okay";
 };

arch/arm64/boot/dts/qcom/sm8250.dtsi

@@ -410,6 +410,21 @@
 			#interrupt-cells = <4>;
 		};
 
+		tlmm: pinctrl@f100000 {
+			compatible = "qcom,sm8250-pinctrl";
+			reg = <0 0x0f100000 0 0x300000>,
+			      <0 0x0f500000 0 0x300000>,
+			      <0 0x0f900000 0 0x300000>;
+			reg-names = "west", "south", "north";
+			interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			gpio-ranges = <&tlmm 0 0 180>;
+			wakeup-parent = <&pdc>;
+		};
+
 		intc: interrupt-controller@17a00000 {
 			compatible = "arm,gic-v3";
 			#interrupt-cells = <3>;