+++ /dev/null
-From fbaf66882e8c247111a190d51c4f397092c8e65a Mon Sep 17 00:00:00 2001
-From: Scott Ellis <scott@jumpnowtek.com>
-Date: Fri, 27 Jan 2017 06:42:42 -0500
-Subject: [PATCH] Add overlay for mcp3008 adc (#1818)
-
-Some example usage:
-
-SPI0.0
-dtparam=spi=on
-dtoverlay=mcp3008:spi0-0-present
-
-SPI0.1
-dtparam=spi=on
-dtoverlay=mcp3008:spi0-1-present
-
-SPI0.0 and SPI0.1
-dtparam=spi=on
-dtoverlay=mcp3008:spi0-0-present,spi0-1-present
-
-SPI1.0
-dtparam=spi=on
-dtoverlay=spi1-1cs
-dtoverlay=mcp3008:spi1-0-present
-
-SPI1.2
-dtparam=spi=on
-dtoverlay=spi1-1cs:cs0_pin=16
-dtoverlay=mcp3008:spi1-0-present
-
-SPI1.0 and SPI1.1
-dtoverlay=spi1-2cs
-dtoverlay=mcp3008:spi1-0-present,spi1-1-present
-
-Changing the speed
-
-SPI0.0
-dtparam=spi=on
-dtoverlay=mcp3008:spi0-0-present,spi0-0-speed=2000000
----
- arch/arm/boot/dts/overlays/Makefile | 1 +
- arch/arm/boot/dts/overlays/README | 9 ++
- arch/arm/boot/dts/overlays/mcp3008-overlay.dts | 205 +++++++++++++++++++++++++
- 3 files changed, 215 insertions(+)
- create mode 100755 arch/arm/boot/dts/overlays/mcp3008-overlay.dts
-
---- a/arch/arm/boot/dts/overlays/Makefile
-+++ b/arch/arm/boot/dts/overlays/Makefile
-@@ -57,6 +57,7 @@ dtbo-$(RPI_DT_OVERLAYS) += mcp23017.dtbo
- dtbo-$(RPI_DT_OVERLAYS) += mcp23s17.dtbo
- dtbo-$(RPI_DT_OVERLAYS) += mcp2515-can0.dtbo
- dtbo-$(RPI_DT_OVERLAYS) += mcp2515-can1.dtbo
-+dtbo-$(RPI_DT_OVERLAYS) += mcp3008.dtbo
- dtbo-$(RPI_DT_OVERLAYS) += mmc.dtbo
- dtbo-$(RPI_DT_OVERLAYS) += mz61581.dtbo
- dtbo-$(RPI_DT_OVERLAYS) += pi3-act-led.dtbo
---- a/arch/arm/boot/dts/overlays/README
-+++ b/arch/arm/boot/dts/overlays/README
-@@ -736,6 +736,15 @@ Params: oscillator Clock fr
- interrupt GPIO for interrupt signal
-
-
-+Name: mcp3008
-+Info: Configures MCP3008 A/D converters
-+ For devices on spi1 or spi2, the interfaces should be enabled
-+ with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
-+Load: dtoverlay=mcp3008,<param>[=<val>]
-+Params: spi<n>-<m>-present boolean, configure device at spi<n>, cs<m>
-+ spi<n>-<m>-speed integer, set the spi bus speed for this device
-+
-+
- Name: mmc
- Info: Selects the bcm2835-mmc SD/MMC driver, optionally with overclock
- Load: dtoverlay=mmc,<param>=<val>
---- /dev/null
-+++ b/arch/arm/boot/dts/overlays/mcp3008-overlay.dts
-@@ -0,0 +1,205 @@
-+/*
-+ * Device tree overlay for Microchip mcp3008 10-Bit A/D Converters
-+ */
-+
-+/dts-v1/;
-+/plugin/;
-+
-+/ {
-+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
-+
-+ fragment@0 {
-+ target = <&spidev0>;
-+ __dormant__ {
-+ status = "disabled";
-+ };
-+ };
-+
-+ fragment@1 {
-+ target = <&spidev1>;
-+ __dormant__ {
-+ status = "disabled";
-+ };
-+ };
-+
-+ fragment@2 {
-+ target-path = "spi1/spidev@0";
-+ __dormant__ {
-+ status = "disabled";
-+ };
-+ };
-+
-+ fragment@3 {
-+ target-path = "spi1/spidev@1";
-+ __dormant__ {
-+ status = "disabled";
-+ };
-+ };
-+
-+ fragment@4 {
-+ target-path = "spi1/spidev@2";
-+ __dormant__ {
-+ status = "disabled";
-+ };
-+ };
-+
-+ fragment@5 {
-+ target-path = "spi2/spidev@0";
-+ __dormant__ {
-+ status = "disabled";
-+ };
-+ };
-+
-+ fragment@6 {
-+ target-path = "spi2/spidev@1";
-+ __dormant__ {
-+ status = "disabled";
-+ };
-+ };
-+
-+ fragment@7 {
-+ target-path = "spi2/spidev@2";
-+ __dormant__ {
-+ status = "disabled";
-+ };
-+ };
-+
-+ fragment@8 {
-+ target = <&spi0>;
-+ __dormant__ {
-+ status = "okay";
-+ #address-cells = <1>;
-+ #size-cells = <0>;
-+
-+ mcp3008_00: mcp3008@0 {
-+ compatible = "mcp3008";
-+ reg = <0>;
-+ spi-max-frequency = <1600000>;
-+ };
-+ };
-+ };
-+
-+ fragment@9 {
-+ target = <&spi0>;
-+ __dormant__ {
-+ status = "okay";
-+ #address-cells = <1>;
-+ #size-cells = <0>;
-+
-+ mcp3008_01: mcp3008@1 {
-+ compatible = "mcp3008";
-+ reg = <1>;
-+ spi-max-frequency = <1600000>;
-+ };
-+ };
-+ };
-+
-+ fragment@10 {
-+ target = <&spi1>;
-+ __dormant__ {
-+ status = "okay";
-+ #address-cells = <1>;
-+ #size-cells = <0>;
-+
-+ mcp3008_10: mcp3008@0 {
-+ compatible = "mcp3008";
-+ reg = <0>;
-+ spi-max-frequency = <1600000>;
-+ };
-+ };
-+ };
-+
-+ fragment@11 {
-+ target = <&spi1>;
-+ __dormant__ {
-+ status = "okay";
-+ #address-cells = <1>;
-+ #size-cells = <0>;
-+
-+ mcp3008_11: mcp3008@1 {
-+ compatible = "mcp3008";
-+ reg = <1>;
-+ spi-max-frequency = <1600000>;
-+ };
-+ };
-+ };
-+
-+ fragment@12 {
-+ target = <&spi1>;
-+ __dormant__ {
-+ status = "okay";
-+ #address-cells = <1>;
-+ #size-cells = <0>;
-+
-+ mcp3008_12: mcp3008@2 {
-+ compatible = "mcp3008";
-+ reg = <2>;
-+ spi-max-frequency = <1600000>;
-+ };
-+ };
-+ };
-+
-+ fragment@13 {
-+ target = <&spi2>;
-+ __dormant__ {
-+ status = "okay";
-+ #address-cells = <1>;
-+ #size-cells = <0>;
-+
-+ mcp3008_20: mcp3008@0 {
-+ compatible = "mcp3008";
-+ reg = <0>;
-+ spi-max-frequency = <1600000>;
-+ };
-+ };
-+ };
-+
-+ fragment@14 {
-+ target = <&spi2>;
-+ __dormant__ {
-+ status = "okay";
-+ #address-cells = <1>;
-+ #size-cells = <0>;
-+
-+ mcp3008_21: mcp3008@1 {
-+ compatible = "mcp3008";
-+ reg = <1>;
-+ spi-max-frequency = <1600000>;
-+ };
-+ };
-+ };
-+
-+ fragment@15 {
-+ target = <&spi2>;
-+ __dormant__ {
-+ status = "okay";
-+ #address-cells = <1>;
-+ #size-cells = <0>;
-+
-+ mcp3008_22: mcp3008@2 {
-+ compatible = "mcp3008";
-+ reg = <2>;
-+ spi-max-frequency = <1600000>;
-+ };
-+ };
-+ };
-+
-+ __overrides__ {
-+ spi0-0-present = <0>, "+0+8";
-+ spi0-1-present = <0>, "+1+9";
-+ spi1-0-present = <0>, "+2+10";
-+ spi1-1-present = <0>, "+3+11";
-+ spi1-2-present = <0>, "+4+12";
-+ spi2-0-present = <0>, "+5+13";
-+ spi2-1-present = <0>, "+6+14";
-+ spi2-2-present = <0>, "+7+15";
-+ spi0-0-speed = <&mcp3008_00>, "spi-max-frequency:0";
-+ spi0-1-speed = <&mcp3008_01>, "spi-max-frequency:0";
-+ spi1-0-speed = <&mcp3008_10>, "spi-max-frequency:0";
-+ spi1-1-speed = <&mcp3008_11>, "spi-max-frequency:0";
-+ spi1-2-speed = <&mcp3008_12>, "spi-max-frequency:0";
-+ spi2-0-speed = <&mcp3008_20>, "spi-max-frequency:0";
-+ spi2-1-speed = <&mcp3008_21>, "spi-max-frequency:0";
-+ spi2-2-speed = <&mcp3008_22>, "spi-max-frequency:0";
-+ };
-+};
projects / openwrt / staging / yousong.git / blobdiff