diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0281-overlays-mcp23017-Support-the-MCP23008.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0281-overlays-mcp23017-Support-the-MCP23008.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0281-overlays-mcp23017-Support-the-MCP23008.patch b/target/linux/brcm2708/patches-4.19/950-0281-overlays-mcp23017-Support-the-MCP23008.patch new file mode 100644 index 0000000000..44f295a89e --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0281-overlays-mcp23017-Support-the-MCP23008.patch @@ -0,0 +1,49 @@ +From c85a1ccbc6b1cab51a5fe5b916bcaf40bcd9096c Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Mon, 21 Jan 2019 12:19:57 +0000 +Subject: [PATCH] overlays: mcp23017: Support the MCP23008 + +Add an 'mcp23008' parameter to enable support for the MCP23008 device. + +See: https://github.com/raspberrypi/linux/issues/2818 + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/overlays/README | 2 ++ + arch/arm/boot/dts/overlays/mcp23017-overlay.dts | 10 +++++++++- + 2 files changed, 11 insertions(+), 1 deletion(-) + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -1212,6 +1212,8 @@ Params: gpiopin Gpio pin + + addr I2C address of the MCP23017 (default: 0x20) + ++ mcp23008 Configure an MCP23008 instead. ++ + + Name: mcp23s17 + Info: Configures the MCP23S08/17 SPI GPIO expanders. +--- a/arch/arm/boot/dts/overlays/mcp23017-overlay.dts ++++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts +@@ -44,11 +44,19 @@ + }; + }; + }; +- ++ ++ fragment@3 { ++ target = <&mcp23017>; ++ __dormant__ { ++ compatible = "microchip,mcp23008"; ++ }; ++ }; ++ + __overrides__ { + gpiopin = <&mcp23017_pins>,"brcm,pins:0", + <&mcp23017>,"interrupts:0"; + addr = <&mcp23017>,"reg:0"; ++ mcp23008 = <0>,"=3"; + }; + }; + |