diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2098-drm-amd-powerplay-wrong-control-mode-cause-the-fan-s.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2098-drm-amd-powerplay-wrong-control-mode-cause-the-fan-s.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2098-drm-amd-powerplay-wrong-control-mode-cause-the-fan-s.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2098-drm-amd-powerplay-wrong-control-mode-cause-the-fan-s.patch new file mode 100644 index 00000000..2540b098 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2098-drm-amd-powerplay-wrong-control-mode-cause-the-fan-s.patch @@ -0,0 +1,42 @@ +From 82f8d374b9c87bb8c85dd6c3d1ea6097bc71ecb3 Mon Sep 17 00:00:00 2001 +From: Evan Quan <evan.quan@amd.com> +Date: Wed, 1 Nov 2017 16:52:08 +0800 +Subject: [PATCH 2098/4131] drm/amd/powerplay: wrong control mode cause the fan + spins faster unnecessarily + +The fan control mode can either be FDO_PWM_MODE_STATIC or FDO_PWM_MODE_STATIC_RPM. +Setting it as AMD_FAN_CTRL_AUTO will cause the fan spin faster wrongly. + +This can be reproduced by: +'# cat /sys/class/hwmon/hwmon0/pwm1 + 38 +'# cat /sys/class/hwmon/hwmon0/pwm1_enable + 2 +'# echo "2" > /sys/class/hwmon/hwmon0/pwm1_enable +'# cat /sys/class/hwmon/hwmon0/pwm1 + 122 +The fan speed get faster wronly even with its original mode echo back. + +Change-Id: I51b0586ac17e0d663925c87d548847b31c79d68a +Signed-off-by: Evan Quan <evan.quan@amd.com> +Reviewed-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c +index 511812e..9d3516c 100644 +--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c ++++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c +@@ -4237,7 +4237,7 @@ static void vega10_set_fan_control_mode(struct pp_hwmgr *hwmgr, uint32_t mode) + vega10_fan_ctrl_stop_smc_fan_control(hwmgr); + break; + case AMD_FAN_CTRL_AUTO: +- if (!vega10_fan_ctrl_set_static_mode(hwmgr, mode)) ++ if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) + vega10_fan_ctrl_start_smc_fan_control(hwmgr); + break; + default: +-- +2.7.4 + |