Hi, I just wanted to gently follow up on this patch. Could you please take another look when you have time?
Thanks, Best Regards, MW Park. ________________________________________ 보낸 사람: 박민우 (MW Park) <[email protected]> 보낸 날짜: 2026년 4월 9일 목요일 오전 10:23 받는 사람: Peng Fan 참조: [email protected]; [email protected]; [email protected] 제목: Re: [PATCH] mmc: allow forward compatibility for EXT_CSD_REV >Would this patch works for you? >https://lore.kernel.org/u-boot/[email protected]/ >Regards, >Peng Thank you for your feedback. I would like to clarify that I independently developed and verified a similar approach to the one in the linked patch. However, my analysis shows that the linked patch is primarily focused on v5.1B, which may lead to compatibility issues with future eMMC versions. I believe my proposed patch provides a more generalized and future-proof solution, ensuring long-term maintenance and stability regardless of version updates. Please let me know your thoughts on this approach. Thanks, Best Regards, MW Park. ________________________________________ 보낸 사람: Peng Fan <[email protected]> 보낸 날짜: 2026년 4월 9일 목요일 오전 1:21 받는 사람: 박민우 (MW Park) 참조: [email protected]; [email protected]; [email protected] 제목: Re: [PATCH] mmc: allow forward compatibility for EXT_CSD_REV CAUTION: This email was sent from outside of TELECHIPS. Please do not click links or open attachments unless you recognize the source of this email and know the content is safe. On Thu, Mar 26, 2026 at 05:55:32AM +0000, ?????? (MW Park) wrote: >According to the JEDEC Standard, the EXT_CSD format is meant to be >forward compatible. As long as CSD_STRUCTURE does not change, all >values for EXT_CSD_REV are authorized. > >Currently, if an eMMC device with a newer EXT_CSD_REV (e.g., eMMC 5.1B >with EXT_CSD_REV=9) is used, U-Boot fails to initialize it and returns >-EINVAL because the revision is larger than the mmc_versions array size. > >Fix this by falling back to the latest supported version if the >EXT_CSD_REV exceeds the known versions. This ensures forward >compatibility with future eMMC specifications. > >Signed-off-by: MW Park <[email protected]> Would this patch works for you? https://lore.kernel.org/u-boot/[email protected]/ Regards, Peng This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Telechips Inc. If you are not the intended recipient of this email, you must neither take any action based upon its contents nor copy or show it to anyone. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Please consider the environment before printing this email.
