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Subject[PATCH 1/5] dt-bindings: gpio: Binding for MStar MSC313 GPIO controller
Date
Add a binding description for the MStar/SigmaStar GPIO controller
found in the MSC313 and later ARMv7 SoCs.

Signed-off-by: Daniel Palmer <daniel@0x0f.com>
---
.../bindings/gpio/mstar,msc313-gpio.yaml | 69 +++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 70 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/mstar,msc313-gpio.yaml

diff --git a/Documentation/devicetree/bindings/gpio/mstar,msc313-gpio.yaml b/Documentation/devicetree/bindings/gpio/mstar,msc313-gpio.yaml
new file mode 100644
index 000000000000..07ef463273d2
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/mstar,msc313-gpio.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/mstar,msc313-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MStar/SigmaStar GPIO controller
+
+maintainers:
+ - Daniel Palmer <daniel@thingy.jp>
+
+properties:
+ $nodename:
+ pattern: "^gpio@[0-9a-f]+$"
+
+ compatible:
+ const: mstar,msc313-gpio
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ "#gpio-cells":
+ const: 2
+
+ gpio-ranges: true
+
+ gpio-ranges-group-names:
+ $ref: /schemas/types.yaml#/definitions/string-array
+
+ interrupts: true
+
+ interrupt-names:
+ description: |
+ The interrupt name should match the pin that the interrupt
+ is connected to.
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - "#gpio-cells"
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/gpio/msc313-gpio.h>
+
+ gpio: gpio@207800 {
+ compatible = "mstar,msc313e-gpio";
+ #gpio-cells = <2>;
+ reg = <0x207800 0x200>;
+ gpio-controller;
+ gpio-ranges = <&pinctrl 0 36 22>,
+ <&pinctrl 22 63 4>,
+ <&pinctrl 26 68 6>;
+ interrupt-parent = <&intc_fiq>;
+ interrupt-names = MSC313_PINNAME_SPI0_CZ,
+ MSC313_PINNAME_SPI0_CK,
+ MSC313_PINNAME_SPI0_DI,
+ MSC313_PINNAME_SPI0_DO;
+ interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+ status = "okay";
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 75b04ba10f21..4594b70f2e3a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2155,6 +2155,7 @@ L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
W: http://linux-chenxing.org/
F: Documentation/devicetree/bindings/arm/mstar/*
+F: Documentation/devicetree/bindings/gpio/mstar,msc313-gpio.yaml
F: arch/arm/boot/dts/mstar-*
F: arch/arm/mach-mstar/

--
2.27.0
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