Hi Jonas,
Thank you for the patch.
On Wed, Feb 20, 2019 at 07:52:31AM +0000, Jonas Karlman wrote:
> The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
> also been identified as needing this workaround with a single iteration.
>
> Fixes: be41fc55f1aa ("drm: bridge: dw-hdmi: Handle overflow workaround based on device version")
> Signed-off-by: Jonas Karlman <jonas@xxxxxxxxx>
This makes me wonder if we have any device at all that doesn't need the
workaround... The HDMI encoder in R-Car SoCs doesn't seem to require it,
but it reports the same version number as on other SoCs that require the
workaround, and enabling it doesn't seem to affect R-Car adversely.
Should we thus enable it unconditionally ? Input from Synopsys would be
useful.
> ---
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 64c3cf027518..14223c0ee784 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -1655,6 +1655,8 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
> * iteration for others.
> * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing
> * the workaround with a single iteration.
> + * The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
> + * been identified as needing the workaround with a single iteration.
> */
>
> switch (hdmi->version) {
> @@ -1663,7 +1665,9 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
> break;
> case 0x131a:
> case 0x132a:
> + case 0x200a:
> case 0x201a:
> + case 0x211a:
> case 0x212a:
> count = 1;
> break;
--
Regards,
Laurent Pinchart
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