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Subject[PATCH 1/2] arm64: dts: Add GPIO and GPIO keys device nodes
Date
This patch adds device nodes to enable one GPIO controller located on
digital chip, 2 EIC (external interrupt controller) controllers loacted
on PMIC and digital chip for Spreadtrum SC9860 platform.

Moreover this patch adds 3 GPIO keys relied on EIC controller to support
power key and volume up/down keys.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
arch/arm64/boot/dts/sprd/sc2731.dtsi | 11 ++++++++
arch/arm64/boot/dts/sprd/sc9860.dtsi | 30 ++++++++++++++++++++
arch/arm64/boot/dts/sprd/whale2.dtsi | 50 ++++++++++++++++++++++++++++++++++
3 files changed, 91 insertions(+)

diff --git a/arch/arm64/boot/dts/sprd/sc2731.dtsi b/arch/arm64/boot/dts/sprd/sc2731.dtsi
index 4331006..98d3b4f 100644
--- a/arch/arm64/boot/dts/sprd/sc2731.dtsi
+++ b/arch/arm64/boot/dts/sprd/sc2731.dtsi
@@ -24,6 +24,17 @@
interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
};

+ pmic_eic: gpio@300 {
+ compatible = "sprd,sc27xx-eic";
+ reg = <0x300>;
+ interrupt-parent = <&sc2731_pmic>;
+ interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
regulators {
compatible = "sprd,sc27xx-regulator";

diff --git a/arch/arm64/boot/dts/sprd/sc9860.dtsi b/arch/arm64/boot/dts/sprd/sc9860.dtsi
index 5dbfb79..3066a55 100644
--- a/arch/arm64/boot/dts/sprd/sc9860.dtsi
+++ b/arch/arm64/boot/dts/sprd/sc9860.dtsi
@@ -7,6 +7,8 @@
*/

#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
#include "whale2.dtsi"

/ {
@@ -679,5 +681,33 @@
};
};
};
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ key-volumedown {
+ label = "Volume Down Key";
+ linux,code = <KEY_VOLUMEDOWN>;
+ gpios = <&eic_debounce 2 GPIO_ACTIVE_LOW>;
+ debounce-interval = <2>;
+ wakeup-source;
+ };
+
+ key-volumeup {
+ label = "Volume Up Key";
+ linux,code = <KEY_VOLUMEUP>;
+ gpios = <&pmic_eic 10 GPIO_ACTIVE_HIGH>;
+ debounce-interval = <2>;
+ wakeup-source;
+ };
+
+ key-power {
+ label = "Power Key";
+ linux,code = <KEY_POWER>;
+ gpios = <&pmic_eic 1 GPIO_ACTIVE_HIGH>;
+ debounce-interval = <2>;
+ wakeup-source;
+ };
+ };
};
};
diff --git a/arch/arm64/boot/dts/sprd/whale2.dtsi b/arch/arm64/boot/dts/sprd/whale2.dtsi
index 66a881e..bf7e70c 100644
--- a/arch/arm64/boot/dts/sprd/whale2.dtsi
+++ b/arch/arm64/boot/dts/sprd/whale2.dtsi
@@ -154,6 +154,56 @@
clocks = <&aon_gate CLK_SPLK_EB>;
};

+ eic_debounce: gpio@40210000 {
+ compatible = "sprd,sc9860-eic-debounce";
+ reg = <0 0x40210000 0 0x80>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ eic_latch: gpio@40210080 {
+ compatible = "sprd,sc9860-eic-latch";
+ reg = <0 0x40210080 0 0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ eic_async: gpio@402100a0 {
+ compatible = "sprd,sc9860-eic-async";
+ reg = <0 0x402100a0 0 0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ eic_sync: gpio@402100c0 {
+ compatible = "sprd,sc9860-eic-sync";
+ reg = <0 0x402100c0 0 0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ ap_gpio: gpio@40280000 {
+ compatible = "sprd,sc9860-gpio";
+ reg = <0 0x40280000 0 0x1000>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
pin_controller: pinctrl@402a0000 {
compatible = "sprd,sc9860-pinctrl";
reg = <0 0x402a0000 0 0x10000>;
--
1.7.9.5
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