summaryrefslogtreecommitdiffstats
path: root/dts/Bindings/net/can/m_can.txt
diff options
context:
space:
mode:
Diffstat (limited to 'dts/Bindings/net/can/m_can.txt')
-rw-r--r--dts/Bindings/net/can/m_can.txt75
1 files changed, 0 insertions, 75 deletions
diff --git a/dts/Bindings/net/can/m_can.txt b/dts/Bindings/net/can/m_can.txt
deleted file mode 100644
index ed614383af..0000000000
--- a/dts/Bindings/net/can/m_can.txt
+++ /dev/null
@@ -1,75 +0,0 @@
-Bosch MCAN controller Device Tree Bindings
--------------------------------------------------
-
-Required properties:
-- compatible : Should be "bosch,m_can" for M_CAN controllers
-- reg : physical base address and size of the M_CAN
- registers map and Message RAM
-- reg-names : Should be "m_can" and "message_ram"
-- interrupts : Should be the interrupt number of M_CAN interrupt
- line 0 and line 1, could be same if sharing
- the same interrupt.
-- interrupt-names : Should contain "int0" and "int1"
-- clocks : Clocks used by controller, should be host clock
- and CAN clock.
-- clock-names : Should contain "hclk" and "cclk"
-- pinctrl-<n> : Pinctrl states as described in bindings/pinctrl/pinctrl-bindings.txt
-- pinctrl-names : Names corresponding to the numbered pinctrl states
-- bosch,mram-cfg : Message RAM configuration data.
- Multiple M_CAN instances can share the same Message
- RAM and each element(e.g Rx FIFO or Tx Buffer and etc)
- number in Message RAM is also configurable,
- so this property is telling driver how the shared or
- private Message RAM are used by this M_CAN controller.
-
- The format should be as follows:
- <offset sidf_elems xidf_elems rxf0_elems rxf1_elems
- rxb_elems txe_elems txb_elems>
- The 'offset' is an address offset of the Message RAM
- where the following elements start from. This is
- usually set to 0x0 if you're using a private Message
- RAM. The remain cells are used to specify how many
- elements are used for each FIFO/Buffer.
-
- M_CAN includes the following elements according to user manual:
- 11-bit Filter 0-128 elements / 0-128 words
- 29-bit Filter 0-64 elements / 0-128 words
- Rx FIFO 0 0-64 elements / 0-1152 words
- Rx FIFO 1 0-64 elements / 0-1152 words
- Rx Buffers 0-64 elements / 0-1152 words
- Tx Event FIFO 0-32 elements / 0-64 words
- Tx Buffers 0-32 elements / 0-576 words
-
- Please refer to 2.4.1 Message RAM Configuration in
- Bosch M_CAN user manual for details.
-
-Optional Subnode:
-- can-transceiver : Can-transceiver subnode describing maximum speed
- that can be used for CAN/CAN-FD modes. See
- Documentation/devicetree/bindings/net/can/can-transceiver.txt
- for details.
-Example:
-SoC dtsi:
-m_can1: can@20e8000 {
- compatible = "bosch,m_can";
- reg = <0x020e8000 0x4000>, <0x02298000 0x4000>;
- reg-names = "m_can", "message_ram";
- interrupts = <0 114 0x04>,
- <0 114 0x04>;
- interrupt-names = "int0", "int1";
- clocks = <&clks IMX6SX_CLK_CANFD>,
- <&clks IMX6SX_CLK_CANFD>;
- clock-names = "hclk", "cclk";
- bosch,mram-cfg = <0x0 0 0 32 0 0 0 1>;
-};
-
-Board dts:
-&m_can1 {
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_m_can1>;
- status = "enabled";
-
- can-transceiver {
- max-bitrate = <5000000>;
- };
-};