dts: bindings: can: add binding for ti,tcan4x5x
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>
diff --git a/dts/bindings/can/ti,tcan4x5x.yaml b/dts/bindings/can/ti,tcan4x5x.yaml
new file mode 100644
index 0000000..7434da0
--- /dev/null
+++ b/dts/bindings/can/ti,tcan4x5x.yaml
@@ -0,0 +1,66 @@
+# 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.
