ARM: dts: imx51-eukrea-mbimxsd51-baseboard: Add CAN support

Add support for CAN based on a MCP2515 connected to ECSPI1.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

diff --git a/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts b/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts
index 8b1098ebaf79015f59dddc019f0d1af5f6f616e8..75e66c9c6144ef02badcb6cafee8755418035b30 100644 (file)
--- a/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts
+++ b/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts
@@ -24,6 +24,14 @@
        model = "Eukrea CPUIMX51";
        compatible = "eukrea,mbimxsd51","eukrea,cpuimx51", "fsl,imx51";
 
+       clocks {
+               clk24M: can_clock {
+                       compatible = "fixed-clock";
+                       #clock-cells = <0>;
+                       clock-frequency = <24000000>;
+               };
+       };
+
        gpio_keys {
                compatible = "gpio-keys";
                pinctrl-names = "default";
@@ -50,6 +58,23 @@
                };
        };
 
+       regulators {
+               compatible = "simple-bus";
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               reg_can: regulator@0 {
+                       compatible = "regulator-fixed";
+                       reg = <0>;
+                       regulator-name = "CAN_RST";
+                       regulator-min-microvolt = <3300000>;
+                       regulator-max-microvolt = <3300000>;
+                       gpio = <&gpio4 15 GPIO_ACTIVE_HIGH>;
+                       startup-delay-us = <20000>;
+                       enable-active-high;
+               };
+       };
+
        sound {
                compatible = "eukrea,asoc-tlv320";
                eukrea,model = "imx51-eukrea-tlv320aic23";
@@ -86,6 +111,26 @@
        status = "okay";
 };
 
+&ecspi1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_ecspi1>;
+       fsl,spi-num-chipselects = <1>;
+       cs-gpios = <&gpio4 24 GPIO_ACTIVE_LOW>;
+       status = "okay";
+
+       can0: can@0 {
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_can>;
+               compatible = "microchip,mcp2515";
+               reg = <0>;
+               clocks = <&clk24M>;
+               spi-max-frequency = <10000000>;
+               interrupt-parent = <&gpio1>;
+               interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
+               vdd-supply = <&reg_can>;
+       };
+};
+
 &i2c1 {
        tlv320aic23: codec@1a {
                compatible = "ti,tlv320aic23";
@@ -104,6 +149,23 @@
                        >;
                };
 
+
+               pinctrl_can: cangrp {
+                       fsl,pins = <
+                               MX51_PAD_CSI2_PIXCLK__GPIO4_15          0x80000000      /* nReset */
+                               MX51_PAD_GPIO1_1__GPIO1_1               0x80000000      /* IRQ */
+                       >;
+               };
+
+               pinctrl_ecspi1: ecspi1grp {
+                       fsl,pins = <
+                               MX51_PAD_CSPI1_MISO__ECSPI1_MISO        0x185
+                               MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI        0x185
+                               MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK        0x185
+                               MX51_PAD_CSPI1_SS0__GPIO4_24            0x80000000      /* CS0 */
+                       >;
+               };
+
                pinctrl_esdhc1: esdhc1grp {
                        fsl,pins = <
                                MX51_PAD_SD1_CMD__SD1_CMD               0x400020d5