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Merge tag 'drm-intel-fixes-2024-02-15' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

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Fix for #10172: Blank screen on JSL Chromebooks. Stable fix to limit DP SST link rate to <=8.1Gbps.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Zc37W27F5OvoeSkG@jlahtine-mobl.ger.corp.intel.com
This commit is contained in:
Dave Airlie 2024-02-16 15:44:36 +10:00
commit 7e1c3be3f9
2 changed files with 5 additions and 2 deletions
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3
drivers/gpu/drm/i915/display/intel_dp.c
View File

@ -2355,6 +2355,9 @@ intel_dp_compute_config_limits(struct intel_dp *intel_dp,
limits->min_rate = intel_dp_common_rate(intel_dp, 0);
limits->max_rate = intel_dp_max_link_rate(intel_dp);
/* FIXME 128b/132b SST support missing */
limits->max_rate = min(limits->max_rate, 810000);
limits->min_lane_count = 1;
limits->max_lane_count = intel_dp_max_lane_count(intel_dp);

4
drivers/gpu/drm/i915/display/intel_vdsc_regs.h
View File

@ -51,8 +51,8 @@
#define DSCC_PICTURE_PARAMETER_SET_0 _MMIO(0x6BA00)
#define _DSCA_PPS_0 0x6B200
#define _DSCC_PPS_0 0x6BA00
#define DSCA_PPS(pps) _MMIO(_DSCA_PPS_0 + (pps) * 4)
#define DSCC_PPS(pps) _MMIO(_DSCC_PPS_0 + (pps) * 4)
#define DSCA_PPS(pps) _MMIO(_DSCA_PPS_0 + ((pps) < 12 ? (pps) : (pps) + 12) * 4)
#define DSCC_PPS(pps) _MMIO(_DSCC_PPS_0 + ((pps) < 12 ? (pps) : (pps) + 12) * 4)
#define _ICL_DSC0_PICTURE_PARAMETER_SET_0_PB 0x78270
#define _ICL_DSC1_PICTURE_PARAMETER_SET_0_PB 0x78370
#define _ICL_DSC0_PICTURE_PARAMETER_SET_0_PC 0x78470