From: Madhav Chauhan <madhav.chauhan@xxxxxxxxx>
This patch disables portsync mode if DSI link
is operating in dual link mode by writing to
TRANS_DDI_FUNC_CTL2 registers.
Signed-off-by: Madhav Chauhan <madhav.chauhan@xxxxxxxxx>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/icl_dsi.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index 0041f57d3c0b..71092f116170 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -841,6 +841,16 @@ static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder)
tmp &= ~TRANS_DDI_FUNC_ENABLE;
I915_WRITE(TRANS_DDI_FUNC_CTL(dsi_trans), tmp);
}
+
+ /* disable port sync mode if dual link */
+ if (intel_dsi->dual_link) {
+ for_each_dsi_port(port, intel_dsi->ports) {
+ dsi_trans = dsi_port_to_transcoder(port);
+ tmp = I915_READ(TRANS_DDI_FUNC_CTL2(dsi_trans));
+ tmp &= ~PORT_SYNC_MODE_ENABLE;
+ I915_WRITE(TRANS_DDI_FUNC_CTL2(dsi_trans), tmp);
+ }
+ }
}
static void __attribute__((unused)) gen11_dsi_disable(
--
2.11.0
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