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Subject[PATCH] arm64: dts: allwinner: a64-oceanic-5205-5inmfd: Enable CAN
Date
Oceanic 5205 5inMFD has MCP2515 CAN device connected via SPI1.

- via SPI1 bus
- vdd supplied by 5V supply along with PL2 enable pin
- xceiver supply same as vdd
- can oscillator connected at 20MHz
- PB2 gpio as interrupt pin
- PD6 gpio as RX_BUF1_CAN0
- PD7 gpio as RX_BUF0_CAN0

Tested-by: Tamas Papp <tamas@osukl.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
.../sun50i-a64-oceanic-5205-5inmfd.dts | 43 +++++++++++++++++++
1 file changed, 43 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dts
index f0cd6587f619..22535a297f51 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dts
@@ -21,6 +21,24 @@
chosen {
stdout-path = "serial0:115200n8";
};
+
+ can_osc: can-osc {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <20000000>;
+ };
+
+ reg_can_v5v: reg-can-v5v {
+ compatible = "regulator-fixed";
+ regulator-name = "reg-can-v5v";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-boot-on;
+ enable-active-high;
+ gpio = <&r_pio 0 2 GPIO_ACTIVE_HIGH>; /* CAN_3V3_EN: PL2 */
+ status = "okay";
+ };
+
};

&ehci0 {
@@ -77,6 +95,31 @@
status = "okay";
};

+&pio {
+ can_pins: can-pins {
+ pins = "PD6", /* RX_BUF1_CAN0 */
+ "PD7"; /* RX_BUF0_CAN0 */
+ function = "gpio_in";
+ };
+};
+
+&spi1 {
+ status = "okay";
+
+ can@0 {
+ compatible = "microchip,mcp2515";
+ reg = <0>;
+ spi-max-frequency = <10000000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&can_pins>;
+ interrupt-parent = <&pio>;
+ interrupts = <1 2 IRQ_TYPE_EDGE_FALLING>; /* INT_CAN0: PB2 */
+ clocks = <&can_osc>;
+ vdd-supply = <&reg_can_v5v>;
+ xceiver-supply = <&reg_can_v5v>;
+ };
+};
+
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_pb_pins>;
--
2.18.0.321.gffc6fa0e3
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