| Message ID | 20180214200906.31509-4-jernej.skrabec@siol.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thursday 15 February 2018 01:38 AM, Jernej Skrabec wrote: > Allwinner SoCs have dw hdmi controller v1.32a which exhibits same > magenta line issue as i.MX6Q and i.MX6DL. Enable workaround for it. > > Tests show that one iteration is enough. > > Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Archit Taneja <architt@codeaurora.org> > Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> > --- > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 8 +++++--- > 1 file changed, 5 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > index a38db40ce990..7ca14d7325b5 100644 > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > @@ -1634,9 +1634,10 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) > * then write one of the FC registers several times. > * > * The number of iterations matters and depends on the HDMI TX revision > - * (and possibly on the platform). So far only i.MX6Q (v1.30a) and > - * i.MX6DL (v1.31a) have been identified as needing the workaround, with > - * 4 and 1 iterations respectively. > + * (and possibly on the platform). So far i.MX6Q (v1.30a), i.MX6DL > + * (v1.31a) and multiple Allwinner SoCs (v1.32a) have been identified > + * as needing the workaround, with 4 iterations for v1.30a and 1 > + * iteration for others. > */ > > switch (hdmi->version) { > @@ -1644,6 +1645,7 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) > count = 4; > break; > case 0x131a: > + case 0x132a: > count = 1; > break; > default: >
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index a38db40ce990..7ca14d7325b5 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -1634,9 +1634,10 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) * then write one of the FC registers several times. * * The number of iterations matters and depends on the HDMI TX revision - * (and possibly on the platform). So far only i.MX6Q (v1.30a) and - * i.MX6DL (v1.31a) have been identified as needing the workaround, with - * 4 and 1 iterations respectively. + * (and possibly on the platform). So far i.MX6Q (v1.30a), i.MX6DL + * (v1.31a) and multiple Allwinner SoCs (v1.32a) have been identified + * as needing the workaround, with 4 iterations for v1.30a and 1 + * iteration for others. */ switch (hdmi->version) { @@ -1644,6 +1645,7 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) count = 4; break; case 0x131a: + case 0x132a: count = 1; break; default: