openwrt/target/linux/bcm27xx/patches-6.6/950-0818-ARM-dts-bcm2712-rpi-5-b-Add-fan-speed-dtparams.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

72 lines
3.6 KiB
Diff

From 83d4e02e4b66625578dc9421e2c69834af392947 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Thu, 4 Jan 2024 12:09:10 +0000
Subject: [PATCH 0818/1085] ARM: dts: bcm2712-rpi-5-b: Add fan speed dtparams
Add dtparams for adjusting the Pi 5 cooling fan speeds and temperature
thresholds.
See: https://github.com/raspberrypi/linux/issues/5820
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
.../arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts | 13 ++++++++++
arch/arm/boot/dts/overlays/README | 25 +++++++++++++++++++
2 files changed, 38 insertions(+)
--- a/arch/arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts
+++ b/arch/arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts
@@ -844,5 +844,18 @@ spi10_cs_pins: &spi10_cs_gpio1 {};
drm_fb2_rp1_dsi1 = <&aliases>, "drm-fb2=",&dsi1;
drm_fb2_rp1_dpi = <&aliases>, "drm-fb2=",&dpi;
drm_fb2_vc4 = <&aliases>, "drm-fb2=",&vc4;
+
+ fan_temp0 = <&cpu_tepid>,"temperature:0";
+ fan_temp1 = <&cpu_warm>,"temperature:0";
+ fan_temp2 = <&cpu_hot>,"temperature:0";
+ fan_temp3 = <&cpu_vhot>,"temperature:0";
+ fan_temp0_hyst = <&cpu_tepid>,"hysteresis:0";
+ fan_temp1_hyst = <&cpu_warm>,"hysteresis:0";
+ fan_temp2_hyst = <&cpu_hot>,"hysteresis:0";
+ fan_temp3_hyst = <&cpu_vhot>,"hysteresis:0";
+ fan_temp0_speed = <&fan>, "cooling-levels:4";
+ fan_temp1_speed = <&fan>, "cooling-levels:8";
+ fan_temp2_speed = <&fan>, "cooling-levels:12";
+ fan_temp3_speed = <&fan>, "cooling-levels:16";
};
};
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -233,6 +233,31 @@ Params:
to negotiate. Legal values are 10, 100 and
1000 (default 1000). Pi3B+ only.
+ fan_temp0 Temperature threshold (in millicelcius) for
+ 1st cooling level (default 50000). Pi5 only.
+ fan_temp0_hyst Temperature hysteresis (in millicelcius) for
+ 1st cooling level (default 5000). Pi5 only.
+ fan_temp0_speed Fan PWM setting for 1st cooling level (0-255,
+ default 75). Pi5 only.
+ fan_temp1 Temperature threshold (in millicelcius) for
+ 2nd cooling level (default 60000). Pi5 only.
+ fan_temp1_hyst Temperature hysteresis (in millicelcius) for
+ 2nd cooling level (default 5000). Pi5 only.
+ fan_temp1_speed Fan PWM setting for 2nd cooling level (0-255,
+ default 125). Pi5 only.
+ fan_temp2 Temperature threshold (in millicelcius) for
+ 3rd cooling level (default 67500). Pi5 only.
+ fan_temp2_hyst Temperature hysteresis (in millicelcius) for
+ 3rd cooling level (default 5000). Pi5 only.
+ fan_temp2_speed Fan PWM setting for 3rd cooling level (0-255,
+ default 175). Pi5 only.
+ fan_temp3 Temperature threshold (in millicelcius) for
+ 4th cooling level (default 75000). Pi5 only.
+ fan_temp3_hyst Temperature hysteresis (in millicelcius) for
+ 4th cooling level (default 5000). Pi5 only.
+ fan_temp3_speed Fan PWM setting for 4th cooling level (0-255,
+ default 250). Pi5 only.
+
hdmi Set to "off" to disable the HDMI interface
(default "on")