arch/arm/boot/dts/overlays/seeed-can-fd-hat-v2-overlay.dts

   1 // redo: ovmerge -c mcp251xfd-overlay.dts,spi0-0,interrupt=25 mcp251xfd-overlay.dts,spi0-1,interrupt=24 i2c-rtc-overlay.dts,pcf85063
   2
   3 // Device tree overlay for https://www.seeedstudio.com/CAN-BUS-FD-HAT-for-Raspberry-Pi-p-4742.html
   4
   5 /dts-v1/;
   6 /plugin/;
   7
   8 #include <dt-bindings/gpio/gpio.h>
   9 #include <dt-bindings/interrupt-controller/irq.h>
  10 #include <dt-bindings/pinctrl/bcm2835.h>
  11
  12 / {
  13         compatible = "brcm,bcm2835";
  14         fragment@0 {
  15                 target = <&spidev0>;
  16                 __overlay__ {
  17                         status = "disabled";
  18                 };
  19         };
  20         fragment@1 {
  21                 target = <&gpio>;
  22                 __overlay__ {
  23                         mcp251xfd_pins: mcp251xfd_spi0_0_pins {
  24                                 brcm,pins = <25>;
  25                                 brcm,function = <BCM2835_FSEL_GPIO_IN>;
  26                         };
  27                 };
  28         };
  29         fragment@2 {
  30                 target-path = "/clocks";
  31                 __overlay__ {
  32                         clk_mcp251xfd_osc: mcp251xfd-spi0-0-osc {
  33                                 #clock-cells = <0>;
  34                                 compatible = "fixed-clock";
  35                                 clock-frequency = <40000000>;
  36                         };
  37                 };
  38         };
  39         fragment@3 {
  40                 target = <&spi0>;
  41                 __overlay__ {
  42                         status = "okay";
  43                         #address-cells = <1>;
  44                         #size-cells = <0>;
  45                         mcp251xfd@0 {
  46                                 compatible = "microchip,mcp251xfd";
  47                                 reg = <0>;
  48                                 pinctrl-names = "default";
  49                                 pinctrl-0 = <&mcp251xfd_pins>;
  50                                 spi-max-frequency = <20000000>;
  51                                 interrupt-parent = <&gpio>;
  52                                 interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
  53                                 clocks = <&clk_mcp251xfd_osc>;
  54                         };
  55                 };
  56         };
  57         fragment@4 {
  58                 target = <&spidev1>;
  59                 __overlay__ {
  60                         status = "disabled";
  61                 };
  62         };
  63         fragment@5 {
  64                 target = <&gpio>;
  65                 __overlay__ {
  66                         mcp251xfd_pins_1: mcp251xfd_spi0_1_pins {
  67                                 brcm,pins = <24>;
  68                                 brcm,function = <BCM2835_FSEL_GPIO_IN>;
  69                         };
  70                 };
  71         };
  72         fragment@6 {
  73                 target-path = "/clocks";
  74                 __overlay__ {
  75                         clk_mcp251xfd_osc_1: mcp251xfd-spi0-1-osc {
  76                                 #clock-cells = <0>;
  77                                 compatible = "fixed-clock";
  78                                 clock-frequency = <40000000>;
  79                         };
  80                 };
  81         };
  82         fragment@7 {
  83                 target = <&spi0>;
  84                 __overlay__ {
  85                         status = "okay";
  86                         #address-cells = <1>;
  87                         #size-cells = <0>;
  88                         mcp251xfd@1 {
  89                                 compatible = "microchip,mcp251xfd";
  90                                 reg = <1>;
  91                                 pinctrl-names = "default";
  92                                 pinctrl-0 = <&mcp251xfd_pins_1>;
  93                                 spi-max-frequency = <20000000>;
  94                                 interrupt-parent = <&gpio>;
  95                                 interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
  96                                 clocks = <&clk_mcp251xfd_osc_1>;
  97                         };
  98                 };
  99         };
 100         fragment@8 {
 101                 target = <&i2cbus>;
 102                 __overlay__ {
 103                         #address-cells = <1>;
 104                         #size-cells = <0>;
 105                         pcf85063@51 {
 106                                 compatible = "nxp,pcf85063";
 107                                 reg = <0x51>;
 108                         };
 109                 };
 110         };
 111         fragment@9 {
 112                 target = <&i2c_arm>;
 113                 i2cbus: __overlay__ {
 114                         status = "okay";
 115                 };
 116         };
 117 };