* Re: [PATCH] ARM: dts: imx6qdl-wandboard: add scl/sda gpios definitions for i2c bus recovery
[not found] <AM5PR0802MB2498F95537E1FF0E5DEB36BEA9B79@AM5PR0802MB2498.eurprd08.prod.outlook.com>
@ 2021-02-01 1:15 ` Fabio Estevam
2021-03-03 12:47 ` Shawn Guo
1 sibling, 0 replies; 2+ messages in thread
From: Fabio Estevam @ 2021-02-01 1:15 UTC (permalink / raw)
To: Dima Azarkin
Cc: Rob Herring, Shawn Guo, Sascha Hauer, Pengutronix Kernel Team,
NXP Linux Team,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
linux-kernel, Christian Hewitt
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>
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] ARM: dts: imx6qdl-wandboard: add scl/sda gpios definitions for i2c bus recovery
[not found] <AM5PR0802MB2498F95537E1FF0E5DEB36BEA9B79@AM5PR0802MB2498.eurprd08.prod.outlook.com>
2021-02-01 1:15 ` [PATCH] ARM: dts: imx6qdl-wandboard: add scl/sda gpios definitions for i2c bus recovery Fabio Estevam
@ 2021-03-03 12:47 ` Shawn Guo
1 sibling, 0 replies; 2+ messages in thread
From: Shawn Guo @ 2021-03-03 12:47 UTC (permalink / raw)
To: Dima Azarkin
Cc: Rob Herring, Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
NXP Linux Team, devicetree, linux-arm-kernel, linux-kernel,
Christian Hewitt
On Sun, Jan 31, 2021 at 06:54:46PM +0300, Dima Azarkin 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>
Applied, thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-02-01 1:15 ` [PATCH] ARM: dts: imx6qdl-wandboard: add scl/sda gpios definitions for i2c bus recovery Fabio Estevam
2021-03-03 12:47 ` Shawn Guo
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