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authorAshutosh Dixit <[email protected]>2023-02-03 07:53:09 -0800
committerJani Nikula <[email protected]>2023-03-13 11:38:05 +0200
commitee892ea83d99610fa33bea612de058e0955eec3a (patch)
treeff3f93b5e92ca47c2ceaa4e5d8483731253c4110
parenteeac8ede17557680855031c6f305ece2378af326 (diff)
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 <[email protected]> Reviewed-by: Gwan-gyeong Mun <[email protected]> Signed-off-by: Rodrigo Vivi <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] (cherry picked from commit 0349c41b05968befaffa5fbb7e73d0ee6004f610) Signed-off-by: Jani Nikula <[email protected]>
-rw-r--r--drivers/gpu/drm/i915/i915_hwmon.c5
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)