Merge tag 'v4.0-next-dts' of https://github.com/mbgg/linux-mediatek i…

…nto next/dt

Merge "ARM: mediatek: dts updates for v4.1" from Matthias Brugger:

- Add pinctrl/GPIO/EINT node for mt8135.
- document binding for the PMIC wrapper
- Add watchdog to mt6589

* tag 'v4.0-next-dts' of https://github.com/mbgg/linux-mediatek:
  ARM: DTS: Add watchdog to mt6589
  dt-bindings: ARM: Mediatek: document binding for the PMIC wrapper
  ARM: dts: mt8135: Add pinctrl/GPIO/EINT node for mt8135.

Signed-off-by: Olof Johansson <[email protected]>

Documentation/devicetree/bindings/soc/mediatek/pwrap.txt

@@ -0,0 +1,58 @@
+MediaTek PMIC Wrapper Driver
+
+This document describes the binding for the MediaTek PMIC wrapper.
+
+On MediaTek SoCs the PMIC is connected via SPI. The SPI master interface
+is not directly visible to the CPU, but only through the PMIC wrapper
+inside the SoC. The communication between the SoC and the PMIC can
+optionally be encrypted. Also a non standard Dual IO SPI mode can be
+used to increase speed.
+
+IP Pairing
+
+on MT8135 the pins of some SoC internal peripherals can be on the PMIC.
+The signals of these pins are routed over the SPI bus using the pwrap
+bridge. In the binding description below the properties needed for bridging
+are marked with "IP Pairing". These are optional on SoCs which do not support
+IP Pairing
+
+Required properties in pwrap device node.
+- compatible:
+	"mediatek,mt8135-pwrap" for MT8135 SoCs
+	"mediatek,mt8173-pwrap" for MT8173 SoCs
+- interrupts: IRQ for pwrap in SOC
+- reg-names: Must include the following entries:
+  "pwrap": Main registers base
+  "pwrap-bridge": bridge base (IP Pairing)
+- reg: Must contain an entry for each entry in reg-names.
+- reset-names: Must include the following entries:
+  "pwrap"
+  "pwrap-bridge" (IP Pairing)
+- resets: Must contain an entry for each entry in reset-names.
+- clock-names: Must include the following entries:
+  "spi": SPI bus clock
+  "wrap": Main module clock
+- clocks: Must contain an entry for each entry in clock-names.
+
+Optional properities:
+- pmic: Mediatek PMIC MFD is the child device of pwrap
+  See the following for child node definitions:
+  Documentation/devicetree/bindings/mfd/mt6397.txt
+
+Example:
+	pwrap: pwrap@1000f000 {
+		compatible = "mediatek,mt8135-pwrap";
+		reg = <0 0x1000f000 0 0x1000>,
+			<0 0x11017000 0 0x1000>;
+		reg-names = "pwrap", "pwrap-bridge";
+		interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>;
+		resets = <&infracfg MT8135_INFRA_PMIC_WRAP_RST>,
+				<&pericfg MT8135_PERI_PWRAP_BRIDGE_SW_RST>;
+		reset-names = "pwrap", "pwrap-bridge";
+		clocks = <&clk26m>, <&clk26m>;
+		clock-names = "spi", "wrap";
+
+		pmic {
+			compatible = "mediatek,mt6397";
+		};
+	};

arch/arm/boot/dts/mt6589.dtsi

@@ -138,5 +138,10 @@
 			clocks = <&uart_clk>;
 			status = "disabled";
 		};
+
+		wdt: watchdog@010000000 {
+			compatible = "mediatek,mt6589-wdt";
+			reg = <0x10000000 0x44>;
+		};
 	};
 };