The DG2 transcoder timing generator DDA only supports a Link M/N ratio of up to 4. The Link M/N ratio limit uses a bare platform check for it.
Add Wa_14014191401 for DG2 and use it for the limit instead. Signed-off-by: Suraj Kandpal <[email protected]> --- drivers/gpu/drm/i915/display/intel_display_wa.c | 2 ++ drivers/gpu/drm/i915/display/intel_display_wa.h | 1 + drivers/gpu/drm/i915/display/intel_dp.c | 3 ++- 3 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.c b/drivers/gpu/drm/i915/display/intel_display_wa.c index 2e3ff4861ef4..91395076e903 100644 --- a/drivers/gpu/drm/i915/display/intel_display_wa.c +++ b/drivers/gpu/drm/i915/display/intel_display_wa.c @@ -94,6 +94,8 @@ bool __intel_display_wa(struct intel_display *display, enum intel_display_wa wa, IS_DISPLAY_STEP(display, STEP_A0, STEP_A2); case INTEL_DISPLAY_WA_14014143976: return IS_DISPLAY_STEP(display, STEP_E0, STEP_FOREVER); + case INTEL_DISPLAY_WA_14014191401: + return display->platform.dg2; case INTEL_DISPLAY_WA_14016740474: return IS_DISPLAY_VERx100_STEP(display, 1400, STEP_A0, STEP_C0); case INTEL_DISPLAY_WA_14020863754: diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.h b/drivers/gpu/drm/i915/display/intel_display_wa.h index b707147a7587..f41e58d1d6e7 100644 --- a/drivers/gpu/drm/i915/display/intel_display_wa.h +++ b/drivers/gpu/drm/i915/display/intel_display_wa.h @@ -31,6 +31,7 @@ enum intel_display_wa { INTEL_DISPLAY_WA_14011508470, INTEL_DISPLAY_WA_14011765242, INTEL_DISPLAY_WA_14014143976, + INTEL_DISPLAY_WA_14014191401, INTEL_DISPLAY_WA_14016740474, INTEL_DISPLAY_WA_14020863754, INTEL_DISPLAY_WA_14025769978, diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 7ceb7c02b597..f3a79ae49b18 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -70,6 +70,7 @@ #include "intel_display_regs.h" #include "intel_display_rpm.h" #include "intel_display_types.h" +#include "intel_display_wa.h" #include "intel_dp.h" #include "intel_dp_aux.h" #include "intel_dp_hdcp.h" @@ -1271,7 +1272,7 @@ bool intel_dp_has_dsc(const struct intel_connector *connector) static int intel_dp_get_max_m_n_ratio(struct intel_display *display) { - if (display->platform.dg2) + if (intel_display_wa(display, INTEL_DISPLAY_WA_14014191401)) return 4; return 10; -- 2.34.1
