target/linux/bcm27xx/patches-5.10/950-0385-mcp251xfd-add-overlay.patch

   1 From 6a028ad5aed9e68280c9ccf6d4ca5370fcfdb4a2 Mon Sep 17 00:00:00 2001
   2 From: Marc Kleine-Budde <mkl@pengutronix.de>
   3 Date: Fri, 15 Nov 2019 00:54:07 +0100
   4 Subject: [PATCH] mcp251xfd: add overlay
   5
   6 Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
   7 ---
   8  arch/arm/boot/dts/overlays/Makefile           |   1 +
   9  arch/arm/boot/dts/overlays/README             |  22 ++
  10  .../boot/dts/overlays/mcp251xfd-overlay.dts   | 226 ++++++++++++++++++
  11  3 files changed, 249 insertions(+)
  12  create mode 100644 arch/arm/boot/dts/overlays/mcp251xfd-overlay.dts
  13
  14 --- a/arch/arm/boot/dts/overlays/Makefile
  15 +++ b/arch/arm/boot/dts/overlays/Makefile
  16 @@ -108,6 +108,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  17         mcp23s17.dtbo \
  18         mcp2515-can0.dtbo \
  19         mcp2515-can1.dtbo \
  20 +       mcp251xfd.dtbo \
  21         mcp3008.dtbo \
  22         mcp3202.dtbo \
  23         mcp342x.dtbo \
  24 --- a/arch/arm/boot/dts/overlays/README
  25 +++ b/arch/arm/boot/dts/overlays/README
  26 @@ -1779,6 +1779,28 @@ Params: oscillator              Clock fr
  27          interrupt               GPIO for interrupt signal
  28
  29
  30 +Name:   mcp251xfd
  31 +Info:   Configures the MCP251XFD CAN controller family
  32 +        For devices on spi1 or spi2, the interfaces should be enabled
  33 +        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
  34 +Load:   dtoverlay=mcp251xfd,<param>=<val>
  35 +Params: spi<n>-<m>              Configure device at spi<n>, cs<m>
  36 +                                (boolean, required)
  37 +
  38 +        oscillator              Clock frequency for the CAN controller (Hz)
  39 +
  40 +        speed                   Maximum SPI frequence (Hz)
  41 +
  42 +        interrupt               GPIO for interrupt signal
  43 +
  44 +        rx_interrupt            GPIO for RX interrupt signal (nINT1) (optional)
  45 +
  46 +        xceiver_enable          GPIO for CAN transceiver enable (optional)
  47 +
  48 +        xceiver_active_high     specifiy if CAN transceiver enable pin is
  49 +                                active high (optional, default: active low)
  50 +
  51 +
  52  Name:   mcp3008
  53  Info:   Configures MCP3008 A/D converters
  54          For devices on spi1 or spi2, the interfaces should be enabled
  55 --- /dev/null
  56 +++ b/arch/arm/boot/dts/overlays/mcp251xfd-overlay.dts
  57 @@ -0,0 +1,226 @@
  58 +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
  59 +
  60 +/dts-v1/;
  61 +/plugin/;
  62 +
  63 +#include <dt-bindings/gpio/gpio.h>
  64 +#include <dt-bindings/interrupt-controller/irq.h>
  65 +#include <dt-bindings/pinctrl/bcm2835.h>
  66 +
  67 +/ {
  68 +       compatible = "brcm,bcm2835";
  69 +
  70 +       fragment@0 {
  71 +               target = <&spidev0>;
  72 +               __dormant__ {
  73 +                       status = "disabled";
  74 +               };
  75 +       };
  76 +
  77 +       fragment@1 {
  78 +               target = <&spidev1>;
  79 +               __dormant__ {
  80 +                       status = "disabled";
  81 +               };
  82 +       };
  83 +
  84 +       fragment@2 {
  85 +               target-path = "spi1/spidev@0";
  86 +               __dormant__ {
  87 +                       status = "disabled";
  88 +               };
  89 +       };
  90 +
  91 +       fragment@3 {
  92 +               target-path = "spi1/spidev@1";
  93 +               __dormant__ {
  94 +                       status = "disabled";
  95 +               };
  96 +       };
  97 +
  98 +       fragment@4 {
  99 +               target-path = "spi1/spidev@2";
 100 +               __dormant__ {
 101 +                       status = "disabled";
 102 +               };
 103 +       };
 104 +
 105 +       fragment@5 {
 106 +               target-path = "spi2/spidev@0";
 107 +               __dormant__ {
 108 +                       status = "disabled";
 109 +               };
 110 +       };
 111 +
 112 +       fragment@6 {
 113 +               target-path = "spi2/spidev@1";
 114 +               __dormant__ {
 115 +                       status = "disabled";
 116 +               };
 117 +       };
 118 +
 119 +       fragment@7 {
 120 +               target-path = "spi2/spidev@2";
 121 +               __dormant__ {
 122 +                       status = "disabled";
 123 +               };
 124 +       };
 125 +
 126 +       fragment@8 {
 127 +               target = <&gpio>;
 128 +               __overlay__ {
 129 +                       mcp251xfd_pins: mcp251xfd_pins {
 130 +                               brcm,pins = <25>;
 131 +                               brcm,function = <BCM2835_FSEL_GPIO_IN>;
 132 +                       };
 133 +               };
 134 +       };
 135 +
 136 +       fragment@9 {
 137 +               target-path = "/clocks";
 138 +               __overlay__ {
 139 +                       clk_mcp251xfd_osc: mcp251xfd-osc {
 140 +                               #clock-cells = <0>;
 141 +                               compatible = "fixed-clock";
 142 +                               clock-frequency = <40000000>;
 143 +                       };
 144 +               };
 145 +       };
 146 +
 147 +       mcp251xfd_frag: fragment@10 {
 148 +               target = <&spi0>;
 149 +               __overlay__ {
 150 +                       status = "okay";
 151 +                       #address-cells = <1>;
 152 +                       #size-cells = <0>;
 153 +
 154 +                       mcp251xfd: mcp251xfd@0 {
 155 +                               compatible = "microchip,mcp251xfd";
 156 +                               reg = <0>;
 157 +                               pinctrl-names = "default";
 158 +                               pinctrl-0 = <&mcp251xfd_pins>;
 159 +                               spi-max-frequency = <20000000>;
 160 +                               interrupt-parent = <&gpio>;
 161 +                               interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
 162 +                               clocks = <&clk_mcp251xfd_osc>;
 163 +                       };
 164 +               };
 165 +       };
 166 +
 167 +       fragment@11 {
 168 +               target = <&mcp251xfd>;
 169 +               mcp251xfd_rx_int_gpios: __dormant__ {
 170 +                       microchip,rx-int-gpios = <&gpio 255 GPIO_ACTIVE_LOW>;
 171 +               };
 172 +       };
 173 +
 174 +       fragment@12 {
 175 +               target = <&gpio>;
 176 +               __dormant__ {
 177 +                       mcp251xfd_xceiver_pins: mcp251xfd_xceiver_pins {
 178 +                               brcm,pins = <255>;
 179 +                               brcm,function = <BCM2835_FSEL_GPIO_OUT>;
 180 +                       };
 181 +               };
 182 +       };
 183 +
 184 +       fragment@13 {
 185 +               target-path = "/";
 186 +               __dormant__ {
 187 +                       reg_mcp251xfd_xceiver: reg_mcp251xfd_xceiver {
 188 +                               compatible = "regulator-fixed";
 189 +                               regulator-name = "mcp251xfd_xceiver";
 190 +                               regulator-min-microvolt = <3300000>;
 191 +                               regulator-max-microvolt = <3300000>;
 192 +                               gpio = <&gpio 4 GPIO_ACTIVE_HIGH>;
 193 +                               pinctrl-names = "default";
 194 +                               pinctrl-0 = <&mcp251xfd_xceiver_pins>;
 195 +                       };
 196 +               };
 197 +       };
 198 +
 199 +       fragment@14 {
 200 +               target = <&mcp251xfd>;
 201 +               __dormant__ {
 202 +                       xceiver-supply = <&reg_mcp251xfd_xceiver>;
 203 +               };
 204 +       };
 205 +
 206 +       __overrides__ {
 207 +               spi0-0 = <0>, "+0",
 208 +                       <&mcp251xfd_frag>, "target:0=", <&spi0>,
 209 +                       <&mcp251xfd>, "reg:0=0",
 210 +                       <&mcp251xfd_pins>, "name=mcp251xfd_spi0_0_pins",
 211 +                       <&clk_mcp251xfd_osc>, "name=mcp251xfd-spi0-0-osc",
 212 +                       <&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi0_0_xceiver_pins",
 213 +                       <&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi0-0-xceiver",
 214 +                       <&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi0-0-xceiver";
 215 +               spi0-1 = <0>, "+1",
 216 +                       <&mcp251xfd_frag>, "target:0=", <&spi0>,
 217 +                       <&mcp251xfd>, "reg:0=1",
 218 +                       <&mcp251xfd_pins>, "name=mcp251xfd_spi0_1_pins",
 219 +                       <&clk_mcp251xfd_osc>, "name=mcp251xfd-spi0-1-osc",
 220 +                       <&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi0_1_xceiver_pins",
 221 +                       <&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi0-1-xceiver",
 222 +                       <&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi0-1-xceiver";
 223 +               spi1-0 = <0>, "+2",
 224 +                       <&mcp251xfd_frag>, "target:0=", <&spi1>,
 225 +                       <&mcp251xfd>, "reg:0=0",
 226 +                       <&mcp251xfd_pins>, "name=mcp251xfd_spi1_0_pins",
 227 +                       <&clk_mcp251xfd_osc>, "name=mcp251xfd-spi1-0-osc",
 228 +                       <&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi1_0_xceiver_pins",
 229 +                       <&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi1-0-xceiver",
 230 +                       <&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi1-0-xceiver";
 231 +               spi1-1 = <0>, "+3",
 232 +                       <&mcp251xfd_frag>, "target:0=", <&spi1>,
 233 +                       <&mcp251xfd>, "reg:0=1",
 234 +                       <&mcp251xfd_pins>, "name=mcp251xfd_spi1_1_pins",
 235 +                       <&clk_mcp251xfd_osc>, "name=mcp251xfd-spi1-1-osc",
 236 +                       <&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi1_1_xceiver_pins",
 237 +                       <&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi1-1-xceiver",
 238 +                       <&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi1-1-xceiver";
 239 +               spi1-2 = <0>, "+4",
 240 +                       <&mcp251xfd_frag>, "target:0=", <&spi1>,
 241 +                       <&mcp251xfd>, "reg:0=2",
 242 +                       <&mcp251xfd_pins>, "name=mcp251xfd_spi1_2_pins",
 243 +                       <&clk_mcp251xfd_osc>, "name=mcp251xfd-spi1-2-osc",
 244 +                       <&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi1_2_xceiver_pins",
 245 +                       <&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi1-2-xceiver",
 246 +                       <&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi1-2-xceiver";
 247 +               spi2-0 = <0>, "+5",
 248 +                       <&mcp251xfd_frag>, "target:0=", <&spi2>,
 249 +                       <&mcp251xfd>, "reg:0=0",
 250 +                       <&mcp251xfd_pins>, "name=mcp251xfd_spi2_0_pins",
 251 +                       <&clk_mcp251xfd_osc>, "name=mcp251xfd-spi2-0-osc",
 252 +                       <&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi2_0_xceiver_pins",
 253 +                       <&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi2-0-xceiver",
 254 +                       <&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi2-0-xceiver";
 255 +               spi2-1 = <0>, "+6",
 256 +                       <&mcp251xfd_frag>, "target:0=", <&spi2>,
 257 +                       <&mcp251xfd>, "reg:0=1",
 258 +                       <&mcp251xfd_pins>, "name=mcp251xfd_spi2_1_pins",
 259 +                       <&clk_mcp251xfd_osc>, "name=mcp251xfd-spi2-1-osc",
 260 +                       <&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi2_1_xceiver_pins",
 261 +                       <&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi2-1-xceiver",
 262 +                       <&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi2-1-xceiver";
 263 +               spi2-2 = <0>, "+7",
 264 +                       <&mcp251xfd_frag>, "target:0=", <&spi2>,
 265 +                       <&mcp251xfd>, "reg:0=2",
 266 +                       <&mcp251xfd_pins>, "name=mcp251xfd_spi2_2_pins",
 267 +                       <&clk_mcp251xfd_osc>, "name=mcp251xfd-spi2-2-osc",
 268 +                       <&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi2_2_xceiver_pins",
 269 +                       <&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi2-2-xceiver",
 270 +                       <&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi2-2-xceiver";
 271 +               oscillator = <&clk_mcp251xfd_osc>, "clock-frequency:0";
 272 +               speed = <&mcp251xfd>, "spi-max-frequency:0";
 273 +               interrupt = <&mcp251xfd_pins>, "brcm,pins:0",
 274 +                       <&mcp251xfd>, "interrupts:0";
 275 +               rx_interrupt = <0>, "+11",
 276 +                       <&mcp251xfd_pins>, "brcm,pins:4",
 277 +                       <&mcp251xfd_rx_int_gpios>, "microchip,rx-int-gpios:4";
 278 +               xceiver_enable = <0>, "+12+13+14",
 279 +                       <&mcp251xfd_xceiver_pins>, "brcm,pins:0",
 280 +                       <&reg_mcp251xfd_xceiver>, "gpio:4";
 281 +               xceiver_active_high = <&reg_mcp251xfd_xceiver>, "enable-active-high?";
 282 +       };
 283 +};