[PATCH] arm64: dts: renesas: r8a779g3: Rework fan hwmon comment on Retronix R-Car V4H Sparrow Hawk fan DTO
Marek Vasut
marek.vasut+renesas at mailbox.org
Sun Sep 7 15:53:05 PDT 2025
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 at mailbox.org>
---
Cc: Conor Dooley <conor+dt at kernel.org>
Cc: Geert Uytterhoeven <geert+renesas at glider.be>
Cc: Krzysztof Kozlowski <krzk+dt at kernel.org>
Cc: Magnus Damm <magnus.damm at gmail.com>
Cc: Rob Herring <robh at kernel.org>
Cc: Wolfram Sang <wsa+renesas at sang-engineering.com>
Cc: devicetree at vger.kernel.org
Cc: linux-renesas-soc at vger.kernel.org
---
.../dts/renesas/r8a779g3-sparrow-hawk-fan-pwm.dtso | 13 ++++---------
1 file changed, 4 insertions(+), 9 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 50d53c8d76c5b..022374c5c8d07 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
@@ -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/;
--
2.51.0
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