Assert DisplayPort reset signal before deasserting, it is to clear out any registers programmed before booting kernel. Signed-off-by: Rohit Visavalia <rohit.visavalia@xxxxxxx> --- drivers/gpu/drm/xlnx/zynqmp_dp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c index 1846c4971fd8..5a40aa1d4283 100644 --- a/drivers/gpu/drm/xlnx/zynqmp_dp.c +++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c @@ -1714,6 +1714,10 @@ int zynqmp_dp_probe(struct zynqmp_dpsub *dpsub) goto err_free; } + ret = zynqmp_dp_reset(dp, true); + if (ret < 0) + return ret; + ret = zynqmp_dp_reset(dp, false); if (ret < 0) goto err_free; -- 2.25.1
