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Date: Tue, 6 Mar 2018 10:53:29 +0100 From: Neil Armstrong <narmstrong@...libre.com> To: architt@...eaurora.org Cc: airlied@...ux.ie, a.hajda@...sung.com, Jose.Abreu@...opsys.com, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Amlogic Meson GX SoCs Hi Architt, 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@...libre.com> > --- > 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: > This fixes a long time issue on Amlogic SoCs, is it ok for you ? Thanks, Neil
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