From 48a09e5b4f55115da88a0c617d51a53ccf3512d1 Mon Sep 17 00:00:00 2001
From: Henrik Brix Andersen <hebad@vestas.com>
Date: Tue, 29 Aug 2023 13:58:17 +0200
Subject: [PATCH] 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>
---
 dts/bindings/can/ti,tcan4x5x.yaml | 66 +++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 dts/bindings/can/ti,tcan4x5x.yaml

diff --git a/dts/bindings/can/ti,tcan4x5x.yaml b/dts/bindings/can/ti,tcan4x5x.yaml
new file mode 100644
index 00000000000..7434da00613
--- /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.