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
