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dts: bindings: can: add binding for ti,tcan4x5x

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Add devicetree binding for the TI TCAN4x5x series of CAN controllers. These
CAN controllers are based on the Bosch M_CAN IP and interfaced via a SPI
bus.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2023-08-29 13:58:17 +02:00 • committed by Carles Cufí
commit 48a09e5b4f
1 changed files with 66 additions and 0 deletions
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dts/bindings/can/ti,tcan4x5x.yaml Normal file
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# Copyright (c) 2023 Vestas Wind Systems A/S
# SPDX-License-Identifier: Apache-2.0
description: |
Texas Instruments TCAN4x5x SPI CAN-FD controller.
Example:
&spi0 {
tcan4x5x: can@0 {
compatible = ti,tcan4x5x";
reg = <0>;
spi-max-frequency = <18000000>;
clock-frequency = <40000000>;
device-state-gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
device-wake-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
int-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
bosch,mram-cfg = <0x0 15 15 5 5 0 10 10>;
sjw = <1>;
sjw-data = <1>;
sample-point = <875>;
sample-point-data = <875>;
bus-speed = <125000>;
bus-speed-data = <1000000>;
status = "okay";
can-transceiver {
max-bitrate = <8000000>;
};
};
};
compatible: "ti,tcan4x5x"
include: ["bosch,m_can-base.yaml", "spi-device.yaml"]
properties:
clock-frequency:
type: int
enum:
- 20000000
- 40000000
required: true
description: |
TCAN4x5x oscillator clock frequency in Hz (20MHz or 40MHz).
device-state-gpios:
type: phandle-array
description: |
GPIO connected to the TCAN4x5x nWKRQ output. This signal is active low.
device-wake-gpios:
type: phandle-array
description: |
GPIO connected to the TCAN4x5x WAKE input. This signal is high-voltage, active high.
reset-gpios:
type: phandle-array
description: |
GPIO connected to the TCAN4x5x RST input. This signal is active high.
int-gpios:
type: phandle-array
required: true
description: |
GPIO connected to the TCAN4x5x nINT interrupt output. This signal is open-drain, active low.