From: Bhavya Kapoor <b-kapoor@ti.com>
Date: Tue, 30 Jan 2024 10:20:43 +0000 (+0530)
Subject: arm64: dts: ti: k3-j7200-som-p0: Add support for CAN instance 0 in main domain
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=da23e8d1124b93e468a24247021ace34902a9895;p=linux.git

arm64: dts: ti: k3-j7200-som-p0: Add support for CAN instance 0 in main domain

CAN instance 0 in the main domain is brought on the J7200 SoM through
header J1. Thus, Add transceiver dt node to add support for this CAN
instance.

Also, add the mux dt nodes to route CAN High and Low lines coming
from the SoC to the Common Processor Board.

Signed-off-by: Bhavya Kapoor <b-kapoor@ti.com>
Link: https://lore.kernel.org/r/20240130102044.120483-3-b-kapoor@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
---

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
index 228efcc170afd..1a9b414cb8e04 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
@@ -5,6 +5,8 @@
 
 /dts-v1/;
 
+#include <dt-bindings/gpio/gpio.h>
+
 #include "k3-j7200.dtsi"
 
 / {
@@ -80,6 +82,25 @@
 			no-map;
 		};
 	};
+
+	mux0: mux-controller {
+		compatible = "gpio-mux";
+		#mux-state-cells = <1>;
+		mux-gpios = <&exp_som 1 GPIO_ACTIVE_HIGH>;
+	};
+
+	mux1: mux-controller {
+		compatible = "gpio-mux";
+		#mux-state-cells = <1>;
+		mux-gpios = <&exp_som 2 GPIO_ACTIVE_HIGH>;
+	};
+
+	transceiver0: can-phy0 {
+		/* standby pin has been grounded by default */
+		compatible = "ti,tcan1042";
+		#phy-cells = <0>;
+		max-bitrate = <5000000>;
+	};
 };
 
 &wkup_pmx0 {
@@ -142,6 +163,13 @@
 			J721E_IOPAD(0xd8, PIN_INPUT_PULLUP, 0) /* (W2) I2C0_SDA */
 		>;
 	};
+
+	main_mcan0_pins_default: main-mcan0-default-pins {
+		pinctrl-single,pins = <
+			J721E_IOPAD(0x24, PIN_INPUT, 0) /* (V20) MCAN0_RX */
+			J721E_IOPAD(0x20, PIN_OUTPUT, 0) /* (V18) MCAN0_TX */
+		>;
+	};
 };
 
 &hbmc {
@@ -478,3 +506,10 @@
 		};
 	};
 };
+
+&main_mcan0 {
+	status = "okay";
+	pinctrl-0 = <&main_mcan0_pins_default>;
+	pinctrl-names = "default";
+	phys = <&transceiver0>;
+};