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mcp251xfd: add overlay
Signed-off-by: Marc Kleine-Budde <[email protected]>
1 parent 04e0a17 commit 57604cb

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‎arch/arm/boot/dts/overlays/Makefile‎

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@@ -108,6 +108,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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mcp23s17.dtbo \
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mcp2515-can0.dtbo \
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mcp2515-can1.dtbo \
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mcp251xfd.dtbo \
111112
mcp3008.dtbo \
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mcp3202.dtbo \
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mcp342x.dtbo \

‎arch/arm/boot/dts/overlays/README‎

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@@ -1779,6 +1779,28 @@ Params: oscillator Clock frequency for the CAN controller (Hz)
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interrupt GPIO for interrupt signal
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Name: mcp251xfd
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Info: Configures the MCP251XFD CAN controller family
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For devices on spi1 or spi2, the interfaces should be enabled
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with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
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Load: dtoverlay=mcp251xfd,<param>=<val>
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Params: spi<n>-<m> Configure device at spi<n>, cs<m>
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(boolean, required)
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oscillator Clock frequency for the CAN controller (Hz)
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speed Maximum SPI frequence (Hz)
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interrupt GPIO for interrupt signal
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rx_interrupt GPIO for RX interrupt signal (nINT1) (optional)
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xceiver_enable GPIO for CAN transceiver enable (optional)
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xceiver_active_high specifiy if CAN transceiver enable pin is
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active high (optional, default: active low)
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Name: mcp3008
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Info: Configures MCP3008 A/D converters
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For devices on spi1 or spi2, the interfaces should be enabled

‎arch/arm/boot/dts/overlays/mcp251xfd-overlay.dts‎

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// SPDX-License-Identifier: (GPL-2.0 OR MIT)
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/dts-v1/;
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/plugin/;
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/pinctrl/bcm2835.h>
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/ {
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compatible = "brcm,bcm2835";
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fragment@0 {
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target = <&spidev0>;
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__dormant__ {
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status = "disabled";
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};
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};
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fragment@1 {
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target = <&spidev1>;
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__dormant__ {
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status = "disabled";
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};
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};
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fragment@2 {
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target-path = "spi1/spidev@0";
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__dormant__ {
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status = "disabled";
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};
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};
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fragment@3 {
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target-path = "spi1/spidev@1";
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__dormant__ {
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status = "disabled";
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};
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};
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fragment@4 {
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target-path = "spi1/spidev@2";
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__dormant__ {
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status = "disabled";
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};
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};
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fragment@5 {
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target-path = "spi2/spidev@0";
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__dormant__ {
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status = "disabled";
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};
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};
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fragment@6 {
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target-path = "spi2/spidev@1";
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__dormant__ {
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status = "disabled";
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};
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};
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fragment@7 {
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target-path = "spi2/spidev@2";
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__dormant__ {
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status = "disabled";
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};
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};
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fragment@8 {
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target = <&gpio>;
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__overlay__ {
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mcp251xfd_pins: mcp251xfd_pins {
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brcm,pins = <25>;
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brcm,function = <BCM2835_FSEL_GPIO_IN>;
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};
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};
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};
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fragment@9 {
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target-path = "/clocks";
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__overlay__ {
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clk_mcp251xfd_osc: mcp251xfd-osc {
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#clock-cells = <0>;
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compatible = "fixed-clock";
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clock-frequency = <40000000>;
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};
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};
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};
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mcp251xfd_frag: fragment@10 {
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target = <&spi0>;
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__overlay__ {
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status = "okay";
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#address-cells = <1>;
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#size-cells = <0>;
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mcp251xfd: mcp251xfd@0 {
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compatible = "microchip,mcp251xfd";
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reg = <0>;
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pinctrl-names = "default";
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pinctrl-0 = <&mcp251xfd_pins>;
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spi-max-frequency = <20000000>;
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interrupt-parent = <&gpio>;
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interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
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clocks = <&clk_mcp251xfd_osc>;
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};
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};
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};
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fragment@11 {
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target = <&mcp251xfd>;
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mcp251xfd_rx_int_gpios: __dormant__ {
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microchip,rx-int-gpios = <&gpio 255 GPIO_ACTIVE_LOW>;
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};
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};
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fragment@12 {
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target = <&gpio>;
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__dormant__ {
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mcp251xfd_xceiver_pins: mcp251xfd_xceiver_pins {
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brcm,pins = <255>;
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brcm,function = <BCM2835_FSEL_GPIO_OUT>;
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};
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};
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};
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fragment@13 {
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target-path = "/";
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__dormant__ {
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reg_mcp251xfd_xceiver: reg_mcp251xfd_xceiver {
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compatible = "regulator-fixed";
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regulator-name = "mcp251xfd_xceiver";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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gpio = <&gpio 4 GPIO_ACTIVE_HIGH>;
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pinctrl-names = "default";
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pinctrl-0 = <&mcp251xfd_xceiver_pins>;
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};
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};
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};
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fragment@14 {
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target = <&mcp251xfd>;
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__dormant__ {
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xceiver-supply = <&reg_mcp251xfd_xceiver>;
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};
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};
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__overrides__ {
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spi0-0 = <0>, "+0",
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<&mcp251xfd_frag>, "target:0=", <&spi0>,
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<&mcp251xfd>, "reg:0=0",
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<&mcp251xfd_pins>, "name=mcp251xfd_spi0_0_pins",
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<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi0-0-osc",
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<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi0_0_xceiver_pins",
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<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi0-0-xceiver",
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<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi0-0-xceiver";
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spi0-1 = <0>, "+1",
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<&mcp251xfd_frag>, "target:0=", <&spi0>,
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<&mcp251xfd>, "reg:0=1",
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<&mcp251xfd_pins>, "name=mcp251xfd_spi0_1_pins",
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<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi0-1-osc",
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<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi0_1_xceiver_pins",
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<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi0-1-xceiver",
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<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi0-1-xceiver";
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spi1-0 = <0>, "+2",
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<&mcp251xfd_frag>, "target:0=", <&spi1>,
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<&mcp251xfd>, "reg:0=0",
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<&mcp251xfd_pins>, "name=mcp251xfd_spi1_0_pins",
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<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi1-0-osc",
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<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi1_0_xceiver_pins",
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<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi1-0-xceiver",
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<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi1-0-xceiver";
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spi1-1 = <0>, "+3",
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<&mcp251xfd_frag>, "target:0=", <&spi1>,
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<&mcp251xfd>, "reg:0=1",
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<&mcp251xfd_pins>, "name=mcp251xfd_spi1_1_pins",
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<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi1-1-osc",
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<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi1_1_xceiver_pins",
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<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi1-1-xceiver",
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<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi1-1-xceiver";
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spi1-2 = <0>, "+4",
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<&mcp251xfd_frag>, "target:0=", <&spi1>,
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<&mcp251xfd>, "reg:0=2",
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<&mcp251xfd_pins>, "name=mcp251xfd_spi1_2_pins",
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<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi1-2-osc",
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<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi1_2_xceiver_pins",
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<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi1-2-xceiver",
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<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi1-2-xceiver";
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spi2-0 = <0>, "+5",
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<&mcp251xfd_frag>, "target:0=", <&spi2>,
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<&mcp251xfd>, "reg:0=0",
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<&mcp251xfd_pins>, "name=mcp251xfd_spi2_0_pins",
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<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi2-0-osc",
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<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi2_0_xceiver_pins",
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<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi2-0-xceiver",
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<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi2-0-xceiver";
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spi2-1 = <0>, "+6",
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<&mcp251xfd_frag>, "target:0=", <&spi2>,
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<&mcp251xfd>, "reg:0=1",
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<&mcp251xfd_pins>, "name=mcp251xfd_spi2_1_pins",
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<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi2-1-osc",
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<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi2_1_xceiver_pins",
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<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi2-1-xceiver",
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<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi2-1-xceiver";
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spi2-2 = <0>, "+7",
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<&mcp251xfd_frag>, "target:0=", <&spi2>,
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<&mcp251xfd>, "reg:0=2",
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<&mcp251xfd_pins>, "name=mcp251xfd_spi2_2_pins",
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<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi2-2-osc",
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<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi2_2_xceiver_pins",
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<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi2-2-xceiver",
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<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi2-2-xceiver";
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oscillator = <&clk_mcp251xfd_osc>, "clock-frequency:0";
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speed = <&mcp251xfd>, "spi-max-frequency:0";
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interrupt = <&mcp251xfd_pins>, "brcm,pins:0",
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<&mcp251xfd>, "interrupts:0";
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rx_interrupt = <0>, "+11",
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<&mcp251xfd_pins>, "brcm,pins:4",
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<&mcp251xfd_rx_int_gpios>, "microchip,rx-int-gpios:4";
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xceiver_enable = <0>, "+12+13+14",
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<&mcp251xfd_xceiver_pins>, "brcm,pins:0",
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<&reg_mcp251xfd_xceiver>, "gpio:4";
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xceiver_active_high = <&reg_mcp251xfd_xceiver>, "enable-active-high?";
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};
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};

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