Re: [PATCH v4 0/2] Add SMI reset and clamp for MediaTek MT8188 SoC

[Krzysztof Kozlowski]

On Fri, Feb 21, 2025 at 03:48:30PM +0800, Friday Yang wrote:
> Based on tag: next-20250220, linux-next/master
> 
> On the MediaTek MT8188 SoC platform, we encountered power-off failures
> and SMI bus hang issues during camera stress tests. The issue arises
> because bus glitches are sometimes produced when MTCMOS powers on or
> off. While this is fairly normal, the software must handle these
> glitches to avoid mistaking them for transaction signals. What's
> more, this issue emerged only after the initial upstreaming of SMI
> driver.
> 
> The software solutions can be summarized as follows:
> 
> 1. Use CLAMP to disable the SMI sub-common port after turning off the
>    LARB CG and before turning off the LARB MTCMOS.
> 2. Use CLAMP to disable/enable the SMI sub-common port.
> 3. Implement an AXI reset for SMI LARBs.
> 
> Changes v4:
> - Use 'devm_reset_control_get_optional_exclusive' instead of
>   'devm_reset_control_get'.
> 
> v3:
> https://lore.kernel.org/lkml/20250121064934.13482-2-

That's not a valid link. Fix your email client.

Best regards,
Krzysztof