6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Imre Deak <imre.deak@xxxxxxxxx>
[ Upstream commit dbcab554f777390d9bb6a808ed0cd90ee59bb44e ]
Select the HDMI specific PLL clock only for HDMI outputs.
Fixes: 62618c7f117e ("drm/i915/mtl: C20 PLL programming")
Cc: Mika Kahola <mika.kahola@xxxxxxxxx>
Cc: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20231213220526.1828827-1-imre.deak@xxxxxxxxx
(cherry picked from commit 937d02cc79c6828fef28a4d80d8d0ad2f7bf2b62)
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_cx0_phy.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
index 80e4ec6ee4031..048e581fda16c 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -2420,7 +2420,8 @@ static void intel_program_port_clock_ctl(struct intel_encoder *encoder,
val |= XELPDP_FORWARD_CLOCK_UNGATE;
- if (is_hdmi_frl(crtc_state->port_clock))
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) &&
+ is_hdmi_frl(crtc_state->port_clock))
val |= XELPDP_DDI_CLOCK_SELECT(XELPDP_DDI_CLOCK_SELECT_DIV18CLK);
else
val |= XELPDP_DDI_CLOCK_SELECT(XELPDP_DDI_CLOCK_SELECT_MAXPCLK);
--
2.43.0
