From: José Roberto de Souza Date: Tue, 30 Apr 2024 17:28:43 +0000 (-0700) Subject: drm/i915/xe2hpd: Do not program MBUS_DBOX BW credits X-Git-Tag: io_uring-6.11-20240722~49^2~20^2~429 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=0f6a95582de3065d27b52bb75195d666a40ab575;p=linux-block.git drm/i915/xe2hpd: Do not program MBUS_DBOX BW credits No display IP beyond Xe_LPD+ has "BW credits" bits in MBUS_DBOX_CTL register. Restrict the programming only to Xe_LPD+. BSpec: 49213 CC: Matt Roper Signed-off-by: José Roberto de Souza Signed-off-by: Balasubramani Vivekanandan Reviewed-by: Matt Roper Signed-off-by: Radhakrishna Sripada Link: https://patchwork.freedesktop.org/patch/msgid/20240430172850.1881525-13-radhakrishna.sripada@intel.com --- diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c index e6476aa621a7..f85980aba25e 100644 --- a/drivers/gpu/drm/i915/display/skl_watermark.c +++ b/drivers/gpu/drm/i915/display/skl_watermark.c @@ -3616,7 +3616,7 @@ static void intel_mbus_dbox_update(struct intel_atomic_state *state) for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc, new_dbuf_state->active_pipes) { u32 pipe_val = val; - if (DISPLAY_VER(i915) >= 14) { + if (DISPLAY_VER_FULL(i915) == IP_VER(14, 0)) { if (xelpdp_is_only_pipe_per_dbuf_bank(crtc->pipe, new_dbuf_state->active_pipes)) pipe_val |= MBUS_DBOX_BW_8CREDITS_MTL;