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SubjectRe: [PATCH 2/6] dt-bindings: can: mcp25xxfd: document device tree bindings
On Thu, Sep 10, 2020 at 07:08:02PM +0530, Manivannan Sadhasivam wrote:
> From: Oleksij Rempel <o.rempel@pengutronix.de>
>
> This patch adds the device-tree binding documentation for the Microchip
> MCP25xxFD SPI CAN controller family.
>
> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
> .../bindings/net/can/microchip,mcp25xxfd.yaml | 79 +++++++++++++++++++
> 1 file changed, 79 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/net/can/microchip,mcp25xxfd.yaml
>
> diff --git a/Documentation/devicetree/bindings/net/can/microchip,mcp25xxfd.yaml b/Documentation/devicetree/bindings/net/can/microchip,mcp25xxfd.yaml
> new file mode 100644
> index 000000000000..aa2cad14d6d7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/can/microchip,mcp25xxfd.yaml
> @@ -0,0 +1,79 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/can/microchip,mcp25xxfd.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title:
> + Microchip MCP2517FD and MCP2518FD stand-alone CAN controller device tree
> + bindings
> +
> +maintainers:
> + - Marc Kleine-Budde <mkl@pengutronix.de>
> +
> +properties:
> + compatible:
> + oneOf:
> + - const: microchip,mcp2517fd
> + description: for MCP2517FD
> + - const: microchip,mcp2518fd
> + description: for MCP2518FD
> + - const: microchip,mcp25xxfd
> + description: to autodetect chip variant
> +
> + reg:
> + maxItems: 1
> +
> + interrupts-extended:

Use 'interrupts'. (interrupts-extended will automagically be supported
by the tools)

> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> +
> + vdd-supply:
> + description: Regulator that powers the CAN controller.
> + maxItems: 1

-supply is always a single item. Drop.

> +
> + xceiver-supply:
> + description: Regulator that powers the CAN transceiver.
> + maxItems: 1

ditto

> +
> + microchip,rx-int-gpios:
> + description:
> + GPIO phandle of GPIO connected to to INT1 pin of the MCP25XXFD, which
> + signals a pending RX interrupt.
> + maxItems: 1
> +
> + spi-max-frequency:
> + description:
> + Must be half or less of "clocks" frequency.
> + maximum: 20000000
> +
> +required:
> + - compatible
> + - reg
> + - interrupts-extended

interrupts

> + - clocks

Add:

additionalProperties: false

> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> +
> + spi0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + can@0 {
> + compatible = "microchip,mcp25xxfd";
> + reg = <0>;
> + clocks = <&can0_osc>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&can0_pins>;
> + spi-max-frequency = <20000000>;
> + interrupts-extended = <&gpio 13 IRQ_TYPE_LEVEL_LOW>;
> + microchip,rx-int-gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
> + vdd-supply = <&reg5v0>;
> + xceiver-supply = <&reg5v0>;
> + };
> + };
> --
> 2.17.1
>

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