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SubjectRe: [PATCH 03/11] drm/bridge/synopsys: dw-hdmi: Enable workaround for v1.32a
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Hi Jernej,

Thank you for the patch.

On Saturday, 30 December 2017 23:01:55 EET 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.
>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>

This does not break R-Car DU, so

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
> 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:

--
Regards,

Laurent Pinchart

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