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| author | Marek Vasut <marek.vasut+renesas@mailbox.org> | 2025-09-08 00:53:05 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2025-09-12 11:15:00 +0200 |
| commit | 5bf682d9747277a0190e82e5ae6f9e201ce002d9 (patch) | |
| tree | c5cc1539b9515d945e7537f7c7d37787f0757f22 /arch | |
| parent | arm64: dts: renesas: sparrow-hawk: Add overlay for IMX462 on J2 (diff) | |
| download | linux-5bf682d9747277a0190e82e5ae6f9e201ce002d9.tar.gz linux-5bf682d9747277a0190e82e5ae6f9e201ce002d9.zip | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-pwm.dtso | 15 |
1 files changed, 5 insertions, 10 deletions
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 50d53c8d76c5..fbfec57db11e 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/; |