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>

1 files changed, 62 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts b/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts
index 8b1098ebaf79..75e66c9c6144 100644
--- 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