net: can: rockchip: add rk3562 can driver

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Change-Id: Ib65f067992701eb73608cc2964b4fc62d792d3f7

Documentation/devicetree/bindings/net/can/rk3562_can.txt

@@ -0,0 +1,33 @@
+Rockchip CANFD controller Device Tree Bindings
+---------------------------------------------------------
+
+Required properties:
+- compatible		: Should be:
+			  - "rockchip,rk3562-can" for RK3562 CAN controllers 3.0
+			  - "rockchip,rk3562-canfd" for RK3562 CANFD controllers 3.0
+- reg			: Physical base address and size of the controller
+			  registers map.
+- interrupts		: Property with a value describing the interrupt
+			  number.
+- clock-names		: List of input clock names
+			  - "can_clk", "pclk",
+			  (See clock bindings for details).
+- clocks		: Clock phandles (see clock bindings for details).
+- resets : Must contain an entry for each entry in reset-names.
+	   See ../reset/reset.txt for details.
+- reset-names : List of input reset names
+			  - "can", "can-apb".
+
+Example:
+
+For Dts file:
+	can0: can0@ff600000 {
+		compatible = "rockchip,rk3562-can";
+		reg = <0x0 0xff600000 0x0 0x1000>;
+		interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru CLK_CAN0>, <&cru PCLK_CAN0>;
+		clock-names = "baudclk", "apb_pclk";
+		resets = <&cru SRST_CAN0>, <&cru SRST_P_CAN0>;
+		reset-names = "can", "can-apb";
+		status = "okay";
+	};

drivers/net/can/rockchip/Kconfig

@@ -17,6 +17,15 @@ config CANFD_ROCKCHIP
 	  To compile this driver as a module, choose M here: the module will
 	  be called rockchip_canfd.
 
+config CAN_RK3562
+	tristate "RK3562 CAN controller"
+	depends on ARCH_ROCKCHIP
+	help
+	Say Y here if you want to use CAN controller found on RK3562 SoCs.
+
+	To compile this driver as a module, choose M here: the module will
+	be called rk3562_can.
+
 config CANFD_RK3576
 	tristate "RK3576 CANFD controller"
 	depends on ARCH_ROCKCHIP

drivers/net/can/rockchip/Makefile

@@ -5,4 +5,5 @@
 
 obj-$(CONFIG_CAN_ROCKCHIP)	+= rockchip_can.o
 obj-$(CONFIG_CANFD_ROCKCHIP)	+= rockchip_canfd.o
+obj-$(CONFIG_CAN_RK3562)	+= rk3562_can.o
 obj-$(CONFIG_CANFD_RK3576)	+= rk3576_canfd.o