Hi Greg,

On 23/02/2018 12:44, Neil Armstrong wrote:

The Amlogic Meson GX SoCs, embedded the v2.01a controller, has been also identified needing this workaround. This patch adds the corresponding version to enable a single iteration for this specific version.

Fixes: be41fc55f1aa ("drm: bridge: dw-hdmi: Handle overflow workaround based on device version") Signed-off-by: Neil Armstrong narmstrong@baylibre.com

This patch is now present in linux master as commit 9c305eb442f3b371fc722ade827bbf673514123e Could it be selected for 4.14 ? The patch has been reworked to apply for 4.17 as indicated in the commit log, but the original patch will apply over 4.14.

Thanks, Neil

---

drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index a38db40..f5018f9 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -1637,6 +1637,8 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) * (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.

• * The Amlogic Meson GX SoCs (v2.01a) have been identifies as needing
  

• * the workaround with a single iteration.
  

  */

switch (hdmi->version) { @@ -1644,6 +1646,7 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) count = 4; break; case 0x131a:

• case 0x201a: count = 1; break; default: