[PATCH 3/3] Addition of binding for firmware signals on peach-pi

[Martyn Welch]

The peach pi has a GPIO connected to the firmware write protect, developer
mode and recovery mode lines. This patch adds the required nodes to the
device tree to configure the pinmuxing and allow these to be read from
user space.

Cc: Rob Herring <robh+dt at kernel.org>
Cc: Pawel Moll <pawel.moll at arm.com>
Cc: Mark Rutland <mark.rutland at arm.com>
Cc: Ian Campbell <ijc+devicetree at hellion.org.uk>
Cc: Kumar Gala <galak at codeaurora.org>
Cc: Russell King <linux at arm.linux.org.uk>
Cc: Kukjin Kim <kgene at kernel.org>
Cc: Krzysztof Kozlowski <k.kozlowski at samsung.com>
Cc: devicetree at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-samsung-soc at vger.kernel.org
Signed-off-by: Martyn Welch <martyn.welch at collabora.co.uk>
---
 arch/arm/boot/dts/exynos5800-peach-pi.dts | 40 +++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
index 49a4f43..485c18f 100644
--- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
+++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
@@ -53,6 +53,25 @@
 		};
 	};
 
+	chromeos-firmware {
+		compatible = "google,gpio-firmware";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&wp_gpio &dev_mode &rec_mode>;
+
+		write-protect {
+			gpios = <&gpx3 0 GPIO_ACTIVE_LOW>;
+		};
+
+		developer-switch {
+			gpios = <&gpx1 3 GPIO_ACTIVE_HIGH>;
+		};
+
+		recovery-switch {
+			gpios = <&gpx0 7 GPIO_ACTIVE_LOW>;
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 
@@ -731,6 +750,13 @@
 		samsung,pin-val = <0>;
 	};
 
+	rec_mode: rec-mode {
+		samsung,pins = "gpx0-7";
+		samsung,pin-function = <0>;
+		samsung,pin-pud = <0>;
+		samsung,pin-drv = <0>;
+	};
+
 	tpm_irq: tpm-irq {
 		samsung,pins = "gpx1-0";
 		samsung,pin-function = <0>;
@@ -752,6 +778,13 @@
 		samsung,pin-drv = <0>;
 	};
 
+	dev_mode: dev-mode {
+		samsung,pins = "gpx1-3";
+		samsung,pin-function = <0>;
+		samsung,pin-pud = <3>;
+		samsung,pin-drv = <0>;
+	};
+
 	ec_irq: ec-irq {
 		samsung,pins = "gpx1-5";
 		samsung,pin-function = <0>;
@@ -773,6 +806,13 @@
 		samsung,pin-drv = <0>;
 	};
 
+	wp_gpio: wp_gpio {
+		samsung,pins = "gpx3-0";
+		samsung,pin-function = <0>;
+		samsung,pin-pud = <0>;
+		samsung,pin-drv = <0>;
+	};
+
 	max77802_irq: max77802-irq {
 		samsung,pins = "gpx3-1";
 		samsung,pin-function = <0>;
-- 
2.1.4