From: Sandor.yu@nxp.com
To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
andrzej.hajda@intel.com, narmstrong@baylibre.com,
robert.foss@linaro.org, Laurent.pinchart@ideasonboard.com,
jonas@kwiboo.se, jernej.skrabec@gmail.com
Cc: Sandor.yu@nxp.com, shengjiu.wang@nxp.com, cai.huoqing@linux.dev,
maxime@cerno.tech, harry.wentland@amd.com,
hverkuil-cisco@xs4all.nl, amuel@sholland.org
Subject: [PATCH v1 2/5] drm: bridge: dw_hdmi: enable overflow workaround for v2.13a
Date: Wed, 6 Apr 2022 16:48:34 +0800 [thread overview]
Message-ID: <5339589121b05c0db7ee4befdc48c7e4ab4f1653.1649230434.git.Sandor.yu@nxp.com> (raw)
In-Reply-To: <cover.1649230434.git.Sandor.yu@nxp.com>
In-Reply-To: <cover.1649230434.git.Sandor.yu@nxp.com>
From: Sandor Yu <Sandor.yu@nxp.com>
iMX865 HDMI (v2.13a) have been identified as needing the workaround.
Tests show that one iteration is enough.
Without the workaround, iMX865 HDMI audio may not work
after cable plugout/in, because HDMI mode is not really set in
register HDMI_FC_INVIDCONF.
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
---
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 4befc104d220..b11577de4836 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2087,9 +2087,9 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
*
* The number of iterations matters and depends on the HDMI TX revision
* (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.
+ * (v1.31a), iMX865(v2.13a) and multiple Allwinner SoCs (v1.32a)
+ * have been identified as needing the workaround,
+ * with 4 iterations for v1.30a and 1 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
@@ -2106,6 +2106,7 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
case 0x201a:
case 0x211a:
case 0x212a:
+ case 0x213a:
count = 1;
break;
default:
--
2.25.1
next prev parent reply other threads:[~2022-04-06 12:39 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-06 8:48 [PATCH v1 0/5] DRM: Bridge: DW_HDMI: Add new features and bug fix Sandor.yu
2022-04-06 8:48 ` [PATCH v1 1/5] drm: bridge: dw_hdmi: cec: Add cec suspend/resume function Sandor.yu
2022-04-06 9:46 ` Hans Verkuil
2022-04-07 8:30 ` [EXT] " Sandor Yu
2022-04-06 8:48 ` Sandor.yu [this message]
2022-04-06 9:17 ` [PATCH v1 2/5] drm: bridge: dw_hdmi: enable overflow workaround for v2.13a Neil Armstrong
2022-04-07 8:30 ` [EXT] " Sandor Yu
2022-04-06 8:48 ` [PATCH v1 3/5] drm: bridge: dw_hdmi: Enable GCP only for Deep Color Sandor.yu
2022-04-06 9:20 ` Neil Armstrong
2022-04-07 8:31 ` [EXT] " Sandor Yu
2022-04-06 8:48 ` [PATCH v1 4/5] drm: bridge: dw_hdmi: add reset function for PHY GEN1 Sandor.yu
2022-04-06 8:48 ` [PATCH v1 5/5] drm: bridge: dw_hdmi: Audio: Add General Parallel Audio (GPA) driver Sandor.yu
2022-04-06 9:27 ` Neil Armstrong
2022-04-07 8:31 ` [EXT] " Sandor Yu
2022-04-07 8:43 ` [PATCH v1 0/5] DRM: Bridge: DW_HDMI: Add new features and bug fix Philipp Zabel
2022-04-07 11:46 ` [EXT] " Sandor Yu
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