ARM: dts: imx7-colibri: add MCP2515 CAN controller

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@agner.ch>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi b/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
index 83c0b71b9ca3302291e3620f24e5f75088fae7be..3f2746169181e568f51e623788fdc8b706eadbf7 100644 (file)
--- 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";
+
+       mcp2515: can@0 {
+               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 689ff6822634e47429cede711ebe5ffc8062744c..c28a483b786d3abfea965478b2fe2f5788bb7430 100644 (file)
--- a/arch/arm/boot/dts/imx7-colibri.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri.dtsi
@@ -92,6 +92,12 @@
        cpu-supply = <&reg_DCDC2>;
 };
 
+&ecspi3 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_ecspi3 &pinctrl_ecspi3_cs>;
+       cs-gpios = <&gpio4 11 GPIO_ACTIVE_HIGH>;
+};
+
 &fec1 {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_enet1>;
@@ -313,7 +319,6 @@
                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 +405,12 @@
                >;
        };
 
+       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