From: Suraj Kandpal <suraj.kandpal@intel.com>
To: intel-xe@lists.freedesktop.org, intel-gfx@lists.freedesktop.org
Cc: ankit.k.nautiyal@intel.com, Suraj Kandpal <suraj.kandpal@intel.com>
Subject: [PATCH v3 0/3] Fix Cx0 Suspend Resume issue
Date: Fri, 16 Jan 2026 14:24:52 +0530 [thread overview]
Message-ID: <20260116085455.571766-1-suraj.kandpal@intel.com> (raw)
CX0 PHY currently has two issues which cause a hang when we try
to suspend resume machine with a delay of 15mins and 1+ hour.
This happens due to two reasons:
1) We do not follow the Enablement sequence where we need to
enable our clock after PPS Enablement cycle
2) We do not make sure response ready and error bit are cleared
in P2M_MSGBUS_STATUS before writing the transaction pending bit.
This series aims to solve this.
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Mika Kahola (1):
drm/i915/pps: Enable panel power earlier
Suraj Kandpal (2):
drm/i915/cx0: Clear response ready & error bit
drm/i915/cx0: Rename intel_clear_response_ready flag
drivers/gpu/drm/i915/display/intel_cx0_phy.c | 14 +++++++++-----
drivers/gpu/drm/i915/display/intel_cx0_phy.h | 4 ++--
drivers/gpu/drm/i915/display/intel_ddi.c | 6 ++++--
drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 5 +++++
drivers/gpu/drm/i915/display/intel_lt_phy.c | 2 +-
5 files changed, 21 insertions(+), 10 deletions(-)
--
2.34.1
next reply other threads:[~2026-01-16 8:55 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-16 8:54 Suraj Kandpal [this message]
2026-01-16 8:54 ` [PATCH v3 1/3] drm/i915/pps: Enable panel power earlier Suraj Kandpal
2026-01-20 13:57 ` Jani Nikula
2026-01-20 13:57 ` Jani Nikula
2026-01-22 18:02 ` Imre Deak
2026-01-21 6:13 ` Dibin Moolakadan Subrahmanian
2026-01-16 8:54 ` [PATCH v3 2/3] drm/i915/cx0: Clear response ready & error bit Suraj Kandpal
2026-01-16 8:54 ` [PATCH v3 3/3] drm/i915/cx0: Rename intel_clear_response_ready flag Suraj Kandpal
2026-01-19 6:43 ` Garg, Nemesa
2026-01-16 9:02 ` ✓ CI.KUnit: success for Fix Cx0 Suspend Resume issue (rev3) Patchwork
2026-01-16 9:35 ` ✓ Xe.CI.BAT: " Patchwork
2026-01-16 11:41 ` ✗ Xe.CI.Full: failure " Patchwork
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