Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/net/can/xilinx_can.txt b/Documentation/devicetree/bindings/net/can/xilinx_can.txt
new file mode 100644
index 000000000..060e2d46b
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/can/xilinx_can.txt
@@ -0,0 +1,60 @@
+Xilinx Axi CAN/Zynq CANPS controller Device Tree Bindings
+---------------------------------------------------------
+
+Required properties:
+- compatible		: Should be:
+			  - "xlnx,zynq-can-1.0" for Zynq CAN controllers
+			  - "xlnx,axi-can-1.00.a" for Axi CAN controllers
+			  - "xlnx,canfd-1.0" for CAN FD controllers
+- 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" (For CANPS),
+			  - "can_clk", "s_axi_aclk" (For AXI CAN and CAN FD).
+			  (See clock bindings for details).
+- clocks		: Clock phandles (see clock bindings for details).
+- tx-fifo-depth		: Can Tx fifo depth (Zynq, Axi CAN).
+- rx-fifo-depth		: Can Rx fifo depth (Zynq, Axi CAN, CAN FD in
+                          sequential Rx mode).
+- tx-mailbox-count	: Can Tx mailbox buffer count (CAN FD).
+- rx-mailbox-count	: Can Rx mailbox buffer count (CAN FD in mailbox Rx
+			  mode).
+
+
+Example:
+
+For Zynq CANPS Dts file:
+	zynq_can_0: can@e0008000 {
+			compatible = "xlnx,zynq-can-1.0";
+			clocks = <&clkc 19>, <&clkc 36>;
+			clock-names = "can_clk", "pclk";
+			reg = <0xe0008000 0x1000>;
+			interrupts = <0 28 4>;
+			interrupt-parent = <&intc>;
+			tx-fifo-depth = <0x40>;
+			rx-fifo-depth = <0x40>;
+		};
+For Axi CAN Dts file:
+	axi_can_0: axi-can@40000000 {
+			compatible = "xlnx,axi-can-1.00.a";
+			clocks = <&clkc 0>, <&clkc 1>;
+			clock-names = "can_clk","s_axi_aclk" ;
+			reg = <0x40000000 0x10000>;
+			interrupt-parent = <&intc>;
+			interrupts = <0 59 1>;
+			tx-fifo-depth = <0x40>;
+			rx-fifo-depth = <0x40>;
+		};
+For CAN FD Dts file:
+	canfd_0: canfd@40000000 {
+			compatible = "xlnx,canfd-1.0";
+			clocks = <&clkc 0>, <&clkc 1>;
+			clock-names = "can_clk", "s_axi_aclk";
+			reg = <0x40000000 0x2000>;
+			interrupt-parent = <&intc>;
+			interrupts = <0 59 1>;
+			tx-mailbox-count = <0x20>;
+			rx-fifo-depth = <0x20>;
+		};