From: Fabio Estevam <festevam@gmail.com>
To: Dima Azarkin <azdmg@outlook.com>
Cc: Rob Herring <robh+dt@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
NXP Linux Team <linux-imx@nxp.com>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Christian Hewitt <christianshewitt@gmail.com>
Subject: Re: [PATCH] ARM: dts: imx6qdl-wandboard: add scl/sda gpios definitions for i2c bus recovery
Date: Sun, 31 Jan 2021 22:15:46 -0300 [thread overview]
Message-ID: <CAOMZO5D59FvmSuHVM0Xq092eF+D0jYK477ZFecA2apnT5zLj3Q@mail.gmail.com> (raw)
In-Reply-To: <AM5PR0802MB2498F95537E1FF0E5DEB36BEA9B79@AM5PR0802MB2498.eurprd08.prod.outlook.com>
On Sun, Jan 31, 2021 at 12:55 PM Dima Azarkin <azdmg@outlook.com> wrote:
>
> The i2c bus on imx6qdl-wandboard has intermittent issues where SDA can freeze
> on low level at the end of transaction so the bus can no longer work. This
> impacts reading of EDID data leading to incorrect TV resolution and no audio.
>
> This scenario is improved by adding scl/sda gpios definitions to implement the
> i2c bus recovery mechanism.
>
> Signed-off-by: Dima Azarkin <azdmg@outlook.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
next parent reply other threads:[~2021-02-01 1:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AM5PR0802MB2498F95537E1FF0E5DEB36BEA9B79@AM5PR0802MB2498.eurprd08.prod.outlook.com>
2021-02-01 1:15 ` Fabio Estevam [this message]
2021-03-03 12:47 ` [PATCH] ARM: dts: imx6qdl-wandboard: add scl/sda gpios definitions for i2c bus recovery Shawn Guo
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