diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0356-Added-Overlay-for-Microchip-MCP23017-I2C-gpio-expand.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0356-Added-Overlay-for-Microchip-MCP23017-I2C-gpio-expand.patch | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0356-Added-Overlay-for-Microchip-MCP23017-I2C-gpio-expand.patch b/target/linux/brcm2708/patches-4.4/0356-Added-Overlay-for-Microchip-MCP23017-I2C-gpio-expand.patch new file mode 100644 index 0000000000..122183951c --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0356-Added-Overlay-for-Microchip-MCP23017-I2C-gpio-expand.patch @@ -0,0 +1,86 @@ +From 40609ec9a60194b9f04cf5ee4fbc4ee5a011a7ea Mon Sep 17 00:00:00 2001 +From: Michael Kaplan <m.kaplan@evva.com> +Date: Tue, 24 May 2016 10:19:08 +0200 +Subject: [PATCH] Added Overlay for Microchip MCP23017 I2C gpio expander + +--- + arch/arm/boot/dts/overlays/README | 9 +++++ + arch/arm/boot/dts/overlays/mcp23017-overlay.dts | 54 +++++++++++++++++++++++++ + 2 files changed, 63 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/mcp23017-overlay.dts + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -567,6 +567,15 @@ Params: gpio_out_pin GPIO for + (default "off") + + ++Name: mcp23017 ++Info: Configures the MCP23017 I2C port expander ++Load: dtoverlay=mcp23017,<param>=<val> ++Params: gpiopin Gpio pin connected to the INTA output of the ++ MCP23017 (default: 4) ++ ++ addr I2C address of the MCP23017 (default: 0x20) ++ ++ + Name: mcp2515-can0 + Info: Configures the MCP2515 CAN controller on spi0.0 + Load: dtoverlay=mcp2515-can0,<param>=<val> +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts +@@ -0,0 +1,54 @@ ++// Definitions for MCP23017 Gpio Extender from Microchip Semiconductor ++ ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; ++ ++ fragment@0 { ++ target = <&i2c1>; ++ __overlay__ { ++ status = "okay"; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&gpio>; ++ __overlay__ { ++ mcp23017_pins: mcp23017_pins { ++ brcm,pins = <4>; ++ brcm,function = <0>; ++ }; ++ }; ++ }; ++ ++ fragment@2 { ++ target = <&i2c1>; ++ __overlay__ { ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ mcp23017: mcp@20 { ++ compatible = "microchip,mcp23017"; ++ reg = <0x20>; ++ gpio-controller; ++ #gpio-cells = <2>; ++ #interrupt-cells=<2>; ++ interrupt-parent = <&gpio>; ++ interrupts = <4 2>; ++ interrupt-controller; ++ microchip,irq-mirror; ++ ++ status = "okay"; ++ }; ++ }; ++ }; ++ ++ __overrides__ { ++ gpiopin = <&mcp23017_pins>,"brcm,pins:0", ++ <&mcp23017>,"interrupts:0"; ++ addr = <&mcp23017>,"reg:0"; ++ }; ++}; ++ |