On 2015-01-27 11:57, Bhuvanchandra DV wrote:
> MCP2515 CAN controller is available on Colibri Evaluation board.
> Hence enable MCP2515 CAN.
>
> Signed-off-by: Bhuvanchandra DV
> ---
> arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 31
> +++
> arch/arm/boot/dts/vf-colibri.dtsi | 15 +++
> 2 files changed, 46 insertions(+)
>
> diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> index 36cafbf..69364b0 100644
> --- a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> +++ b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> @@ -12,6 +12,12 @@
> bootargs = "console=ttyLP0,115200";
> };
>
> + clk16m: clk16m {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <1600>;
> + };
> +
> regulators {
> compatible = "simple-bus";
> #address-cells = <1>;
> @@ -47,6 +53,21 @@
> status = "okay";
> };
>
> +&dspi1 {
> + status = "okay";
> +
> + can2: mcp2515@0 {
The device tree usage website states (devicetree.org): "nodes are named
according to what kind of device it represents"...
You can use the label to specify the type, e.g. I would suggest to use
something like:
mcp2515can: can@0 {
...
> + compatible = "microchip,mcp2515";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_can_int>;
> + reg = <0>;
> + clocks = <&clk16m>;
> + spi-max-frequency = <1000>;
> + interrupt-parent = <&gpio2>;
The interrupt line of the MCP2515 is connected to SODIMM 73, which is
PORT1[11] on Vybrid. My recent renaming of the GPIO's has been merged
already:
https://lkml.org/lkml/2015/1/16/419
Hence, this should be updated to gpio1.
> + interrupts = <11 GPIO_ACTIVE_LOW>;
> + };
> +};
> +
> &esdhc1 {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_esdhc1>;
> @@ -94,3 +115,13 @@
> &usbh1 {
> vbus-supply = <&usbh_vbus_reg>;
> };
> +
> +&iomuxc {
> + vf610-colibri {
> + pinctrl_can_int: can_int {
> + fsl,pins = <
> + VF610_PAD_PTB21__GPIO_430x22ed
> + >;
> + };
> + };
> +};
> diff --git a/arch/arm/boot/dts/vf-colibri.dtsi
> b/arch/arm/boot/dts/vf-colibri.dtsi
> index 5c2b732..fbef082 100644
> --- a/arch/arm/boot/dts/vf-colibri.dtsi
> +++ b/arch/arm/boot/dts/vf-colibri.dtsi
> @@ -23,6 +23,12 @@
> status = "okay";
> };
>
> +&dspi1 {
> + bus-num = <1>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_dspi1>;
> +};
> +
> &edma0 {
> status = "okay";
> };
> @@ -107,6 +113,15 @@
> >;
> };
>
> + pinctrl_dspi1: dspi1grp {
> + fsl,pins = <
> + VF610_PAD_PTD5__DSPI1_CS0 0x33e2
> + VF610_PAD_PTD6__DSPI1_SIN 0x33e1
> + VF610_PAD_PTD7__DSPI1_SOUT 0x33e2
> + VF610_PAD_PTD8__DSPI1_SCK 0x33e2
> + >;
> + };
> +
> pinctrl_esdhc1: esdhc1grp {
> fsl,pins = <
> VF610_PAD_PTA24__ESDHC1_CLK 0x31ef
The rest looks good, thx.
--
Stefan
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