1 # SPDX-License-Identifier: GPL-2.0
4 $id: http://devicetree.org/schemas/net/can/bosch,m_can.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Bosch MCAN controller Bindings
9 description: Bosch MCAN controller for CAN bus
12 - Sriram Dash <sriram.dash@samsung.com>
20 - description: M_CAN registers map
21 - description: message RAM
30 - description: interrupt line0
31 - description: interrupt line1
44 - description: peripheral clock
45 - description: bus clock
54 Message RAM configuration data.
55 Multiple M_CAN instances can share the same Message RAM
56 and each element(e.g Rx FIFO or Tx Buffer and etc) number
57 in Message RAM is also configurable, so this property is
58 telling driver how the shared or private Message RAM are
59 used by this M_CAN controller.
61 The format should be as follows:
62 <offset sidf_elems xidf_elems rxf0_elems rxf1_elems rxb_elems txe_elems txb_elems>
63 The 'offset' is an address offset of the Message RAM where
64 the following elements start from. This is usually set to
65 0x0 if you're using a private Message RAM. The remain cells
66 are used to specify how many elements are used for each FIFO/Buffer.
68 M_CAN includes the following elements according to user manual:
69 11-bit Filter 0-128 elements / 0-128 words
70 29-bit Filter 0-64 elements / 0-128 words
71 Rx FIFO 0 0-64 elements / 0-1152 words
72 Rx FIFO 1 0-64 elements / 0-1152 words
73 Rx Buffers 0-64 elements / 0-1152 words
74 Tx Event FIFO 0-32 elements / 0-64 words
75 Tx Buffers 0-32 elements / 0-576 words
77 Please refer to 2.4.1 Message RAM Configuration in Bosch
78 M_CAN user manual for details.
79 $ref: /schemas/types.yaml#/definitions/int32-array
82 - description: The 'offset' is an address offset of the Message RAM where
83 the following elements start from. This is usually set to 0x0 if
84 you're using a private Message RAM.
86 - description: 11-bit Filter 0-128 elements / 0-128 words
89 - description: 29-bit Filter 0-64 elements / 0-128 words
92 - description: Rx FIFO 0 0-64 elements / 0-1152 words
95 - description: Rx FIFO 1 0-64 elements / 0-1152 words
98 - description: Rx Buffers 0-64 elements / 0-1152 words
101 - description: Tx Event FIFO 0-32 elements / 0-64 words
104 - description: Tx Buffers 0-32 elements / 0-576 words
110 $ref: can-transceiver.yaml#
122 additionalProperties: false
126 #include <dt-bindings/clock/imx6sx-clock.h>
128 compatible = "bosch,m_can";
129 reg = <0x020e8000 0x4000>, <0x02298000 0x4000>;
130 reg-names = "m_can", "message_ram";
131 interrupts = <0 114 0x04>, <0 114 0x04>;
132 interrupt-names = "int0", "int1";
133 clocks = <&clks IMX6SX_CLK_CANFD>,
134 <&clks IMX6SX_CLK_CANFD>;
135 clock-names = "hclk", "cclk";
136 bosch,mram-cfg = <0x0 0 0 32 0 0 0 1>;
139 max-bitrate = <5000000>;