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7d7aa2fd92
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
149 lines
3.6 KiB
Diff
149 lines
3.6 KiB
Diff
From b71f1fd962c66ba3fa46483f193cc2263146c5bf Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Mon, 21 Jan 2019 12:23:55 +0000
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Subject: [PATCH] overlays: Add mcp342x overlay
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Support the MCP342x family of ADCs from Microchip.
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See: https://github.com/raspberrypi/linux/issues/2819
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 16 ++++
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.../arm/boot/dts/overlays/mcp342x-overlay.dts | 93 +++++++++++++++++++
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3 files changed, 110 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/mcp342x-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -79,6 +79,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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mcp2515-can1.dtbo \
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mcp3008.dtbo \
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mcp3202.dtbo \
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+ mcp342x.dtbo \
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media-center.dtbo \
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midi-uart0.dtbo \
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midi-uart1.dtbo \
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -1277,6 +1277,22 @@ Params: spi<n>-<m>-present boolean,
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spi<n>-<m>-speed integer, set the spi bus speed for this device
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+Name: mcp342x
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+Info: Overlay for activation of Microchip MCP3421-3428 ADCs over I2C
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+Load: dtoverlay=mcp342x,<param>=<val>
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+Params: addr I2C bus address of device, for devices with
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+ addresses that are configurable, e.g. by
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+ hardware links (default=0x68)
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+ mcp3421 The device is an MCP3421
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+ mcp3422 The device is an MCP3422
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+ mcp3423 The device is an MCP3423
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+ mcp3424 The device is an MCP3424
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+ mcp3425 The device is an MCP3425
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+ mcp3426 The device is an MCP3426
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+ mcp3427 The device is an MCP3427
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+ mcp3428 The device is an MCP3428
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+
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+
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Name: media-center
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Info: Media Center HAT - 2.83" Touch Display + extras by Pi Supply
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Load: dtoverlay=media-center,<param>=<val>
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/mcp342x-overlay.dts
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@@ -0,0 +1,93 @@
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+// Overlay for MCP3421-8 ADCs from Microchip Semiconductor
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+
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
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+
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+ fragment@0 {
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+ target = <&i2c1>;
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+ __overlay__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ status = "okay";
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+
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+ mcp342x: mcp@68 {
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+ reg = <0x68>;
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+
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+ status = "okay";
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+ };
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&mcp342x>;
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+ __dormant__ {
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+ compatible = "microchip,mcp3421";
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&mcp342x>;
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+ __dormant__ {
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+ compatible = "microchip,mcp3422";
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+ };
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+ };
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+
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+ fragment@3 {
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+ target = <&mcp342x>;
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+ __dormant__ {
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+ compatible = "microchip,mcp3423";
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+ };
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+ };
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+
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+ fragment@4 {
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+ target = <&mcp342x>;
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+ __dormant__ {
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+ compatible = "microchip,mcp3424";
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+ };
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+ };
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+
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+ fragment@5 {
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+ target = <&mcp342x>;
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+ __dormant__ {
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+ compatible = "microchip,mcp3425";
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+ };
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+ };
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+
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+ fragment@6 {
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+ target = <&mcp342x>;
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+ __dormant__ {
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+ compatible = "microchip,mcp3426";
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+ };
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+ };
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+
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+ fragment@7 {
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+ target = <&mcp342x>;
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+ __dormant__ {
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+ compatible = "microchip,mcp3427";
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+ };
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+ };
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+
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+ fragment@8 {
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+ target = <&mcp342x>;
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+ __dormant__ {
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+ compatible = "microchip,mcp3428";
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+ };
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+ };
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+
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+ __overrides__ {
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+ addr = <&mcp342x>,"reg:0";
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+ mcp3421 = <0>,"=1";
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+ mcp3422 = <0>,"=2";
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+ mcp3423 = <0>,"=3";
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+ mcp3424 = <0>,"=4";
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+ mcp3425 = <0>,"=5";
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+ mcp3426 = <0>,"=6";
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+ mcp3427 = <0>,"=7";
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+ mcp3428 = <0>,"=8";
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+ };
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+};
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+
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