* [Bug report]: "i2c: muxes: pca954x: Use reset controller only" makes I2C break
@ 2025-10-14 6:28 Kuninori Morimoto
2025-10-14 6:47 ` Wolfram Sang
2025-10-15 10:56 ` Wolfram Sang
0 siblings, 2 replies; 3+ messages in thread
From: Kuninori Morimoto @ 2025-10-14 6:28 UTC (permalink / raw)
To: Wojciech Siudy, Wolfram Sang; +Cc: linux-i2c
Hi Wojciech, Wolfram
I noticed that this commit breaks Renesas ULCB board Sound which is using I2C.
690de2902dca98aec96de004428c020ca902f047 (HEAD)
("i2c: muxes: pca954x: Use reset controller only")
Before this patch, sound works correctly, but after this patch, sound cann't
work.
Thank you for your help !!
Best regards
---
Kuninori Morimoto
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [Bug report]: "i2c: muxes: pca954x: Use reset controller only" makes I2C break
2025-10-14 6:28 [Bug report]: "i2c: muxes: pca954x: Use reset controller only" makes I2C break Kuninori Morimoto
@ 2025-10-14 6:47 ` Wolfram Sang
2025-10-15 10:56 ` Wolfram Sang
1 sibling, 0 replies; 3+ messages in thread
From: Wolfram Sang @ 2025-10-14 6:47 UTC (permalink / raw)
To: Kuninori Morimoto; +Cc: Wojciech Siudy, linux-i2c
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Hi Morimoto-san,
> I noticed that this commit breaks Renesas ULCB board Sound which is using I2C.
>
> 690de2902dca98aec96de004428c020ca902f047 (HEAD)
> ("i2c: muxes: pca954x: Use reset controller only")
>
> Before this patch, sound works correctly, but after this patch, sound cann't
> work.
This is on KingFisher, right? I have this board and will have a look at
it today. Thank you for the report!
All the best,
Wolfram
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [Bug report]: "i2c: muxes: pca954x: Use reset controller only" makes I2C break
2025-10-14 6:28 [Bug report]: "i2c: muxes: pca954x: Use reset controller only" makes I2C break Kuninori Morimoto
2025-10-14 6:47 ` Wolfram Sang
@ 2025-10-15 10:56 ` Wolfram Sang
1 sibling, 0 replies; 3+ messages in thread
From: Wolfram Sang @ 2025-10-15 10:56 UTC (permalink / raw)
To: Kuninori Morimoto; +Cc: Wojciech Siudy, linux-i2c
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Hi Morimoto-san,
> I noticed that this commit breaks Renesas ULCB board Sound which is using I2C.
>
> 690de2902dca98aec96de004428c020ca902f047 (HEAD)
> ("i2c: muxes: pca954x: Use reset controller only")
>
> Before this patch, sound works correctly, but after this patch, sound cann't
> work.
Confirmed. You need to enable CONFIG_RESET_GPIO in your .config. The
reset-framework won't do the fallback without the driver. I will discuss
this issue with them.
Thanks for the report!
Wolfram
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2025-10-14 6:28 [Bug report]: "i2c: muxes: pca954x: Use reset controller only" makes I2C break Kuninori Morimoto
2025-10-14 6:47 ` Wolfram Sang
2025-10-15 10:56 ` Wolfram Sang
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