On Tue, 2019-06-04 at 17:58 +0300, Imre Deak wrote:
> The PHY satus complete flag normally clears when disconnecting the
s/satus/status
> PHY
> in DP-alt mode (achieved by switching to safe mode), so wait for the
> flag to clear.
>
> Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_tc.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_tc.c
> b/drivers/gpu/drm/i915/intel_tc.c
> index 3fdcfa2bbaee..84e0c06877ec 100644
> --- a/drivers/gpu/drm/i915/intel_tc.c
> +++ b/drivers/gpu/drm/i915/intel_tc.c
> @@ -143,6 +143,10 @@ static void icl_tc_phy_set_safe_mode(struct
> intel_digital_port *dig_port,
> val |= DP_PHY_MODE_STATUS_NOT_SAFE(tc_port);
>
> I915_WRITE(PORT_TX_DFLEXDPCSSS, val);
> +
> + if (enable && wait_for(!icl_tc_phy_status_complete(dig_port),
> 10))
> + DRM_DEBUG_DRIVER("Port %s: PHY complete clear timed
> out\n",
> + tc_port_name(dev_priv, tc_port));
No mention in spec that we need to do that but it should not harm.
Reviewed-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> }
>
> /*
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