mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-27 12:57:53 +00:00
Code Issues Releases Wiki Activity

arm64: dts: renesas: white-hawk: Add CAN-FD support

Browse source 
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 <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/a19d0a70aacaf4c3517a226bf32ea49db3542da4.1674500205.git.geert+renesas@glider.be
This commit is contained in:
Geert Uytterhoeven 2023-01-23 20:06:19 +01:00
parent 5056a0c728
commit 548b277111
1 changed files with 44 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

44
arch/arm64/boot/dts/renesas/r8a779g0-white-hawk.dts
View file

@ -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 @@ eeprom@51 {
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";
};
};