Some eDP sinks or platform boards will not support hpd.
This patch adds support for those cases.
Signed-off-by: Sankeerth Billakanti <quic_sbill...@quicinc.com>
---
drivers/gpu/drm/msm/dp/dp_catalog.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c
b/drivers/gpu/drm/msm/dp/dp_catalog.c
index f15316b..f8ddc73 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -596,8 +596,10 @@ void dp_catalog_ctrl_hpd_config(struct dp_catalog
*dp_catalog)
reftimer |= DP_DP_HPD_REFTIMER_ENABLE;
dp_write_aux(catalog, REG_DP_DP_HPD_REFTIMER, reftimer);
- /* Enable HPD */
- dp_write_aux(catalog, REG_DP_DP_HPD_CTRL, DP_DP_HPD_CTRL_HPD_EN);
+ /* Enable HPD if supported*/
+ if (!of_property_read_bool(catalog->dev->of_node, "no-hpd"))
+ dp_write_aux(catalog, REG_DP_DP_HPD_CTRL,
+ DP_DP_HPD_CTRL_HPD_EN);
}
u32 dp_catalog_link_is_connected(struct dp_catalog *dp_catalog)
--
2.7.4
