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| author | Ashutosh Dixit <ashutosh.dixit@intel.com> | 2023-02-03 07:53:09 -0800 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2023-03-13 11:38:05 +0200 |
| commit | ee892ea83d99610fa33bea612de058e0955eec3a (patch) | |
| tree | ff3f93b5e92ca47c2ceaa4e5d8483731253c4110 /drivers/gpu | |
| parent | eeac8ede17557680855031c6f305ece2378af326 (diff) | |
| download | linux-stable-ee892ea83d99610fa33bea612de058e0955eec3a.tar.gz linux-stable-ee892ea83d99610fa33bea612de058e0955eec3a.tar.bz2 linux-stable-ee892ea83d99610fa33bea612de058e0955eec3a.zip | |
drm/i915/hwmon: Enable PL1 power limit
Previous documentation suggested that PL1 power limit is always
enabled. However we now find this not to be the case on some
platforms (such as ATSM). Therefore enable PL1 power limit during hwmon
initialization.
Bspec: 51864
v2: Add Bspec reference (Gwan-gyeong)
v3: Add Fixes tag
Fixes: 99f55efb79114 ("drm/i915/hwmon: Power PL1 limit and TDP setting")
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230203155309.1042297-1-ashutosh.dixit@intel.com
(cherry picked from commit 0349c41b05968befaffa5fbb7e73d0ee6004f610)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_hwmon.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c index 1225bc432f0d..4683a5b96eff 100644 --- a/drivers/gpu/drm/i915/i915_hwmon.c +++ b/drivers/gpu/drm/i915/i915_hwmon.c @@ -687,6 +687,11 @@ hwm_get_preregistration_info(struct drm_i915_private *i915) for_each_gt(gt, i915, i) hwm_energy(&hwmon->ddat_gt[i], &energy); } + + /* Enable PL1 power limit */ + if (i915_mmio_reg_valid(hwmon->rg.pkg_rapl_limit)) + hwm_locked_with_pm_intel_uncore_rmw(ddat, hwmon->rg.pkg_rapl_limit, + PKG_PWR_LIM_1_EN, PKG_PWR_LIM_1_EN); } void i915_hwmon_register(struct drm_i915_private *i915) |