target/linux/brcm2708/patches-4.14/950-0146-Add-overlay-for-mcp3202-12-bit-ADC.patch

   1 From ab6b50d10b73ed3150dd80633131b7d56c1c63df Mon Sep 17 00:00:00 2001
   2 From: penfold42 <penfold42@users.noreply.github.com>
   3 Date: Tue, 2 Jan 2018 00:15:19 +1100
   4 Subject: [PATCH 146/454] Add overlay for mcp3202 12 bit ADC
   5
   6 ---
   7  arch/arm/boot/dts/overlays/Makefile           |   1 +
   8  arch/arm/boot/dts/overlays/README             |   9 +
   9  .../arm/boot/dts/overlays/mcp3202-overlay.dts | 205 ++++++++++++++++++
  10  3 files changed, 215 insertions(+)
  11  create mode 100755 arch/arm/boot/dts/overlays/mcp3202-overlay.dts
  12
  13 --- a/arch/arm/boot/dts/overlays/Makefile
  14 +++ b/arch/arm/boot/dts/overlays/Makefile
  15 @@ -61,6 +61,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  16         mcp2515-can0.dtbo \
  17         mcp2515-can1.dtbo \
  18         mcp3008.dtbo \
  19 +       mcp3202.dtbo \
  20         media-center.dtbo \
  21         midi-uart0.dtbo \
  22         midi-uart1.dtbo \
  23 --- a/arch/arm/boot/dts/overlays/README
  24 +++ b/arch/arm/boot/dts/overlays/README
  25 @@ -994,6 +994,15 @@ Params: spi<n>-<m>-present      boolean,
  26          spi<n>-<m>-speed        integer, set the spi bus speed for this device
  27
  28
  29 +Name:   mcp3202
  30 +Info:   Configures MCP3202 A/D converters
  31 +        For devices on spi1 or spi2, the interfaces should be enabled
  32 +        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
  33 +Load:   dtoverlay=mcp3202,<param>[=<val>]
  34 +Params: spi<n>-<m>-present      boolean, configure device at spi<n>, cs<m>
  35 +        spi<n>-<m>-speed        integer, set the spi bus speed for this device
  36 +
  37 +
  38  Name:   media-center
  39  Info:   Media Center HAT - 2.83" Touch Display + extras by Pi Supply
  40  Load:   dtoverlay=media-center,<param>=<val>
  41 --- /dev/null
  42 +++ b/arch/arm/boot/dts/overlays/mcp3202-overlay.dts
  43 @@ -0,0 +1,205 @@
  44 +/*
  45 + * Device tree overlay for Microchip mcp3202 12-Bit A/D Converters
  46 + */
  47 +
  48 +/dts-v1/;
  49 +/plugin/;
  50 +
  51 +/ {
  52 +       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
  53 +
  54 +       fragment@0 {
  55 +               target = <&spidev0>;
  56 +               __dormant__ {
  57 +                       status = "disabled";
  58 +               };
  59 +       };
  60 +
  61 +       fragment@1 {
  62 +               target = <&spidev1>;
  63 +               __dormant__ {
  64 +                       status = "disabled";
  65 +               };
  66 +       };
  67 +
  68 +       fragment@2 {
  69 +               target-path = "spi1/spidev@0";
  70 +               __dormant__ {
  71 +                       status = "disabled";
  72 +               };
  73 +       };
  74 +
  75 +       fragment@3 {
  76 +               target-path = "spi1/spidev@1";
  77 +               __dormant__ {
  78 +                       status = "disabled";
  79 +               };
  80 +       };
  81 +
  82 +       fragment@4 {
  83 +               target-path = "spi1/spidev@2";
  84 +               __dormant__ {
  85 +                       status = "disabled";
  86 +               };
  87 +       };
  88 +
  89 +       fragment@5 {
  90 +               target-path = "spi2/spidev@0";
  91 +               __dormant__ {
  92 +                       status = "disabled";
  93 +               };
  94 +       };
  95 +
  96 +       fragment@6 {
  97 +               target-path = "spi2/spidev@1";
  98 +               __dormant__ {
  99 +                       status = "disabled";
 100 +               };
 101 +       };
 102 +
 103 +       fragment@7 {
 104 +               target-path = "spi2/spidev@2";
 105 +               __dormant__ {
 106 +                       status = "disabled";
 107 +               };
 108 +       };
 109 +
 110 +       fragment@8 {
 111 +               target = <&spi0>;
 112 +               __dormant__ {
 113 +                       status = "okay";
 114 +                       #address-cells = <1>;
 115 +                       #size-cells = <0>;
 116 +
 117 +                       mcp3202_00: mcp3202@0 {
 118 +                               compatible = "mcp3202";
 119 +                               reg = <0>;
 120 +                               spi-max-frequency = <1600000>;
 121 +                       };
 122 +               };
 123 +       };
 124 +
 125 +       fragment@9 {
 126 +               target = <&spi0>;
 127 +               __dormant__ {
 128 +                       status = "okay";
 129 +                       #address-cells = <1>;
 130 +                       #size-cells = <0>;
 131 +
 132 +                       mcp3202_01: mcp3202@1 {
 133 +                               compatible = "mcp3202";
 134 +                               reg = <1>;
 135 +                               spi-max-frequency = <1600000>;
 136 +                       };
 137 +               };
 138 +       };
 139 +
 140 +       fragment@10 {
 141 +               target = <&spi1>;
 142 +               __dormant__ {
 143 +                       status = "okay";
 144 +                       #address-cells = <1>;
 145 +                       #size-cells = <0>;
 146 +
 147 +                       mcp3202_10: mcp3202@0 {
 148 +                               compatible = "mcp3202";
 149 +                               reg = <0>;
 150 +                               spi-max-frequency = <1600000>;
 151 +                       };
 152 +               };
 153 +       };
 154 +
 155 +       fragment@11 {
 156 +               target = <&spi1>;
 157 +               __dormant__ {
 158 +                       status = "okay";
 159 +                       #address-cells = <1>;
 160 +                       #size-cells = <0>;
 161 +
 162 +                       mcp3202_11: mcp3202@1 {
 163 +                               compatible = "mcp3202";
 164 +                               reg = <1>;
 165 +                               spi-max-frequency = <1600000>;
 166 +                       };
 167 +               };
 168 +       };
 169 +
 170 +       fragment@12 {
 171 +               target = <&spi1>;
 172 +               __dormant__ {
 173 +                       status = "okay";
 174 +                       #address-cells = <1>;
 175 +                       #size-cells = <0>;
 176 +
 177 +                       mcp3202_12: mcp3202@2 {
 178 +                               compatible = "mcp3202";
 179 +                               reg = <2>;
 180 +                               spi-max-frequency = <1600000>;
 181 +                       };
 182 +               };
 183 +       };
 184 +
 185 +       fragment@13 {
 186 +               target = <&spi2>;
 187 +               __dormant__ {
 188 +                       status = "okay";
 189 +                       #address-cells = <1>;
 190 +                       #size-cells = <0>;
 191 +
 192 +                       mcp3202_20: mcp3202@0 {
 193 +                               compatible = "mcp3202";
 194 +                               reg = <0>;
 195 +                               spi-max-frequency = <1600000>;
 196 +                       };
 197 +               };
 198 +       };
 199 +
 200 +       fragment@14 {
 201 +               target = <&spi2>;
 202 +               __dormant__ {
 203 +                       status = "okay";
 204 +                       #address-cells = <1>;
 205 +                       #size-cells = <0>;
 206 +
 207 +                       mcp3202_21: mcp3202@1 {
 208 +                               compatible = "mcp3202";
 209 +                               reg = <1>;
 210 +                               spi-max-frequency = <1600000>;
 211 +                       };
 212 +               };
 213 +       };
 214 +
 215 +       fragment@15 {
 216 +               target = <&spi2>;
 217 +               __dormant__ {
 218 +                       status = "okay";
 219 +                       #address-cells = <1>;
 220 +                       #size-cells = <0>;
 221 +
 222 +                       mcp3202_22: mcp3202@2 {
 223 +                               compatible = "mcp3202";
 224 +                               reg = <2>;
 225 +                               spi-max-frequency = <1600000>;
 226 +                       };
 227 +               };
 228 +       };
 229 +
 230 +       __overrides__ {
 231 +               spi0-0-present = <0>, "+0+8";
 232 +               spi0-1-present = <0>, "+1+9";
 233 +               spi1-0-present = <0>, "+2+10";
 234 +               spi1-1-present = <0>, "+3+11";
 235 +               spi1-2-present = <0>, "+4+12";
 236 +               spi2-0-present = <0>, "+5+13";
 237 +               spi2-1-present = <0>, "+6+14";
 238 +               spi2-2-present = <0>, "+7+15";
 239 +               spi0-0-speed = <&mcp3202_00>, "spi-max-frequency:0";
 240 +               spi0-1-speed = <&mcp3202_01>, "spi-max-frequency:0";
 241 +               spi1-0-speed = <&mcp3202_10>, "spi-max-frequency:0";
 242 +               spi1-1-speed = <&mcp3202_11>, "spi-max-frequency:0";
 243 +               spi1-2-speed = <&mcp3202_12>, "spi-max-frequency:0";
 244 +               spi2-0-speed = <&mcp3202_20>, "spi-max-frequency:0";
 245 +               spi2-1-speed = <&mcp3202_21>, "spi-max-frequency:0";
 246 +               spi2-2-speed = <&mcp3202_22>, "spi-max-frequency:0";
 247 +       };
 248 +};