commit 5bf682d9747277a0190e82e5ae6f9e201ce002d9
author Marek Vasut <marek.vasut+renesas@mailbox.org> Mon Sep 08 00:53:05 2025 +0200
committer Geert Uytterhoeven <geert+renesas@glider.be> Fri Sep 12 11:15:00 2025 +0200
tree c5cc1539b9515d945e7537f7c7d37787f0757f22
parent babab7f22da6ae04b87c0cded98622ea4a648910

arm64: dts: renesas: sparrow-hawk-fan-pwm: Rework hwmon comment

Reword fan DT overlay hwmon comment to accurately locate the fan control
sysfs hwmon node on Retronix R-Car V4H Sparrow Hawk.
No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20250907225338.426253-1-marek.vasut+renesas@mailbox.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-pwm.dtso

diff --git a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-pwm.dtso b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-pwm.dtso
index 50d53c8..fbfec57 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-pwm.dtso
+++ b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-pwm.dtso
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 /*
- * Device Tree Overlay for the PWM controlled blower fan in connector J3:FAN
+ * Device Tree Overlay for the PWM controlled blower fan on connector J3:FAN
  * on R-Car V4H ES3.0 Sparrow Hawk board
  *
  * Copyright (C) 2025 Marek Vasut <marek.vasut+renesas@mailbox.org>
@@ -9,21 +9,16 @@
  *
  * # Localize hwmon sysfs directory that matches the PWM fan,
  * # enable the PWM fan, and configure the fan speed manually.
- * r8a779g3-sparrow-hawk$ grep -H . /sys/class/hwmon/hwmon?/name
- * /sys/class/hwmon/hwmon0/name:sensor1_thermal
- * /sys/class/hwmon/hwmon1/name:sensor2_thermal
- * /sys/class/hwmon/hwmon2/name:sensor3_thermal
- * /sys/class/hwmon/hwmon3/name:sensor4_thermal
- * /sys/class/hwmon/hwmon4/name:pwmfan
- *                       ^      ^^^^^^
+ * r8a779g3-sparrow-hawk$ ls -1 /sys/devices/platform/pwm-fan/hwmon/hwmon?/pwm?_enable
+ * /sys/devices/platform/pwm-fan/hwmon/hwmon4/pwm1_enable
  *
  * # Select mode 2 , enable fan PWM and regulator and keep them enabled.
  * # For details, see Linux Documentation/hwmon/pwm-fan.rst
- * r8a779g3-sparrow-hawk$ echo 2 > /sys/class/hwmon/hwmon4/pwm1_enable
+ * r8a779g3-sparrow-hawk$ echo 2 > /sys/devices/platform/pwm-fan/hwmon/hwmon4/pwm1_enable
  *
  * # Configure PWM fan speed in range 0..255 , 0 is stopped , 255 is full speed .
  * # Fan speed 101 is about 2/5 of the PWM fan speed:
- * r8a779g3-sparrow-hawk$ echo 101 > /sys/class/hwmon/hwmon4/pwm1
+ * r8a779g3-sparrow-hawk$ echo 101 > /sys/devices/platform/pwm-fan/hwmon/hwmon4/pwm1
  */
 
 /dts-v1/;