Add overlay for mcp3202 12 bit ADC

diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
index 313fa3d53e072c370324c83b04193f205099e9b7..fb576ea2e925e588ee669979a386ee131569a249 100644 (file)
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -60,6 +60,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
        mcp2515-can0.dtbo \
        mcp2515-can1.dtbo \
        mcp3008.dtbo \
+       mcp3202.dtbo \
        media-center.dtbo \
        midi-uart0.dtbo \
        midi-uart1.dtbo \

diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
index d27d4befda3dd322af624170b4bdaa009df870ca..92e7f0ff3c3205e5864f5dfd9d59033a4535ba22 100644 (file)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -983,6 +983,15 @@ 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:   mcp3202
+Info:   Configures MCP3202 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=mcp3202,<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:   media-center
 Info:   Media Center HAT - 2.83" Touch Display + extras by Pi Supply
 Load:   dtoverlay=media-center,<param>=<val>

diff --git a/arch/arm/boot/dts/overlays/mcp3202-overlay.dts b/arch/arm/boot/dts/overlays/mcp3202-overlay.dts
new file mode 100755 (executable)
index 0000000..9902c46
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mcp3202-overlay.dts
@@ -0,0 +1,205 @@
+/*
+ * Device tree overlay for Microchip mcp3202 12-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>;
+
+                       mcp3202_00: mcp3202@0 {
+                               compatible = "mcp3202";
+                               reg = <0>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@9 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_01: mcp3202@1 {
+                               compatible = "mcp3202";
+                               reg = <1>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@10 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_10: mcp3202@0 {
+                               compatible = "mcp3202";
+                               reg = <0>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@11 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_11: mcp3202@1 {
+                               compatible = "mcp3202";
+                               reg = <1>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@12 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_12: mcp3202@2 {
+                               compatible = "mcp3202";
+                               reg = <2>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@13 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_20: mcp3202@0 {
+                               compatible = "mcp3202";
+                               reg = <0>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@14 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_21: mcp3202@1 {
+                               compatible = "mcp3202";
+                               reg = <1>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@15 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_22: mcp3202@2 {
+                               compatible = "mcp3202";
+                               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 = <&mcp3202_00>, "spi-max-frequency:0";
+               spi0-1-speed = <&mcp3202_01>, "spi-max-frequency:0";
+               spi1-0-speed = <&mcp3202_10>, "spi-max-frequency:0";
+               spi1-1-speed = <&mcp3202_11>, "spi-max-frequency:0";
+               spi1-2-speed = <&mcp3202_12>, "spi-max-frequency:0";
+               spi2-0-speed = <&mcp3202_20>, "spi-max-frequency:0";
+               spi2-1-speed = <&mcp3202_21>, "spi-max-frequency:0";
+               spi2-2-speed = <&mcp3202_22>, "spi-max-frequency:0";
+       };
+};