From 548b2771111442fa15dd4c52a581ae3220d12b8c Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 23 Jan 2023 20:06:19 +0100 Subject: [PATCH] arm64: dts: renesas: white-hawk: Add CAN-FD support Enable confirmed-working CAN-FD channels 0 and 1 on the White-Hawk development board: - Channel 0 uses an NXP TJR1443AT CAN transceiver, which must be enabled through a GPIO, - Channels 1-7 use Microchip MCP2558FD-H/SN CAN transceivers (not mounted for channels 4-7), which do not need explicit description, but channels 2-3 do not seem to work. Inspired by a patch in the BSP by Kazuya Mizuguch. Signed-off-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/a19d0a70aacaf4c3517a226bf32ea49db3542da4.1674500205.git.geert+renesas@glider.be --- .../boot/dts/renesas/r8a779g0-white-hawk.dts | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk.dts b/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk.dts index 04a2b6b83e743..eff1ef6e2cc83 100644 --- a/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk.dts +++ b/arch/arm64/boot/dts/renesas/r8a779g0-white-hawk.dts @@ -13,6 +13,33 @@ / { model = "Renesas White Hawk CPU and Breakout boards based on r8a779g0"; compatible = "renesas,white-hawk-breakout", "renesas,white-hawk-cpu", "renesas,r8a779g0"; + + can_transceiver0: can-phy0 { + compatible = "nxp,tjr1443"; + #phy-cells = <0>; + enable-gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>; + max-bitrate = <5000000>; + }; +}; + +&can_clk { + clock-frequency = <40000000>; +}; + +&canfd { + pinctrl-0 = <&canfd0_pins>, <&canfd1_pins>, <&can_clk_pins>; + pinctrl-names = "default"; + + status = "okay"; + + channel0 { + status = "okay"; + phys = <&can_transceiver0>; + }; + + channel1 { + status = "okay"; + }; }; &i2c0 { @@ -23,3 +50,20 @@ pagesize = <8>; }; }; + +&pfc { + can_clk_pins: can-clk { + groups = "can_clk"; + function = "can_clk"; + }; + + canfd0_pins: canfd0 { + groups = "canfd0_data"; + function = "canfd0"; + }; + + canfd1_pins: canfd1 { + groups = "canfd1_data"; + function = "canfd1"; + }; +}; -- 2.30.2