Re: [PATCH 8/9] ARM: dts: imx7-colibri: add MCP2515 CAN controller

From: Stefan Agner
Date: Thu Dec 07 2017 - 04:04:41 EST

On 2017-12-06 16:30, Stefan Agner wrote:
> The Colibri Evaluation Carrier Board provides a MCP2515 CAN
> controller connected via SPI. Note that the i.MX 7 provides
> an internal CAN controller which is much better suited for CAN
> operations. Using the MCP2515 with a Colibri iMX7 module is
> mainly useful to test the SPI interface.
>
> Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
> ---
> arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi | 25 +++++++++++++++++++++++++
> arch/arm/boot/dts/imx7-colibri.dtsi | 14 +++++++++++++-
> 2 files changed, 38 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
> b/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
> index 87c23b769a08..3d6c282dd258 100644
> --- a/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
> +++ b/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
> @@ -45,6 +45,13 @@
> stdout-path = "serial0:115200n8";
> };
>
> + /* fixed crystal dedicated to mpc258x */
> + clk16m: clk16m {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <16000000>;
> + };
> +
> panel: panel {
> compatible = "edt,et057090dhu";
> backlight = <&bl>;
> @@ -99,6 +106,24 @@
> status = "okay";
> };
>
> +&ecspi3 {
> + status = "okay";
> +
> + mcp258x0: mcp258x@0 {


Just realized that this is somewhat bogus, this should be "mcp2515:
can@0".

--
Stefan

> + compatible = "microchip,mcp2515";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_can_int>;
> + reg = <0>;
> + clocks = <&clk16m>;
> + interrupt-parent = <&gpio5>;
> + interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
> + spi-max-frequency = <10000000>;
> + vdd-supply = <&reg_3v3>;
> + xceiver-supply = <&reg_5v0>;
> + status = "okay";
> + };
> +};
> +
> &fec1 {
> status = "okay";
> };
> diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi
> b/arch/arm/boot/dts/imx7-colibri.dtsi
> index 689ff6822634..e1c6da0a65e4 100644
> --- a/arch/arm/boot/dts/imx7-colibri.dtsi
> +++ b/arch/arm/boot/dts/imx7-colibri.dtsi
> @@ -92,6 +92,13 @@
> cpu-supply = <&reg_DCDC2>;
> };
>
> +&ecspi3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_ecspi3 &pinctrl_ecspi3_cs>;
> + num-cs = <1>;
> + cs-gpios = <&gpio4 11 GPIO_ACTIVE_HIGH>;
> +};
> +
> &fec1 {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_enet1>;
> @@ -313,7 +320,6 @@
> fsl,pins = <
> MX7D_PAD_ENET1_RGMII_RD3__GPIO7_IO3 0x74 /* SODIMM 55 */
> MX7D_PAD_ENET1_RGMII_RD2__GPIO7_IO2 0x74 /* SODIMM 63 */
> - MX7D_PAD_SD1_RESET_B__GPIO5_IO2 0X14 /* SODIMM 73 */
> MX7D_PAD_SAI1_RX_SYNC__GPIO6_IO16 0x14 /* SODIMM 77 */
> MX7D_PAD_EPDC_DATA09__GPIO2_IO9 0x14 /* SODIMM 89 */
> MX7D_PAD_EPDC_DATA08__GPIO2_IO8 0x74 /* SODIMM 91 */
> @@ -400,6 +406,12 @@
> >;
> };
>
> + pinctrl_can_int: can-int-grp {
> + fsl,pins = <
> + MX7D_PAD_SD1_RESET_B__GPIO5_IO2 0X14 /* SODIMM 73 */
> + >;
> + };
> +
> pinctrl_enet1: enet1grp {
> fsl,pins = <
> MX7D_PAD_ENET1_CRS__GPIO7_IO14 0x14