* 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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