Re: [PATCH 1/2] mmc-utils: lsmmc.c: print_mmc_cid(): correct year/month parsing

[Peter Korsgaard <peter@korsgaard.com>]

>>>>> "Avri" == Avri Altman <Avri.Altman@sandisk.com> writes:

Hi,

 > Yeah - they noticed that as well and proposed a similar approach by
 > extending the ext-csd-rev to 9.0. I had the code ready for a while
 > now but somehow failed to submit it yet. Here it is.

Ahh, great!

> Thanks for fixing the year-month misplacement.

 > Thanks,
 > Avri


 > From c0e5ec1d3670161444943c8984b6cdafb82fac67 Mon Sep 17 00:00:00 2001
 > From: Avri Altman <avri.altman@sandisk.com>
 > Date: Thu, 13 Mar 2025 10:10:49 +0200
 > Subject: [PATCH] mmc: core: Adjust MDT beyond 2025
 > MIME-Version: 1.0
 > Content-Type: text/plain; charset=UTF-8
 > Content-Transfer-Encoding: 8bit

 > JEDEC JC64.1 proposal, which was recently approved, increases the
 > manufacturing year limit for eMMC devices. The eMMC manufacturing year
 > is stored in a 4-bit field in the CID register. Originally, it covered
 > 1997–2012. Later, with EXT_CSD_REV=8, it was extended up to 2025. Now,
 > with EXT_CSD_REV=9, the range is rolled over by another 16 years, up to
 > 2038.

 > The mapping is as follows:

 > | cid[8..11] | ver ≤ 4 | rev > 4 | rev > 8 |
 > |------------|---------|---------|---------|
 > | 0          | 1997    | 2013    | 2029    |
 > | 1          | 1998    | 2014    | 2030    |
 > | 2          | 1999    | 2015    | 2031    |
 > | 3          | 2000    | 2016    | 2032    |
 > | 4          | 2001    | 2017    | 2033    |
 > | 5          | 2002    | 2018    | 2034    |
 > | 6          | 2003    | 2019    | 2035    |
 > | 7          | 2004    | 2020    | 2036    |
 > | 8          | 2005    | 2021    | 2037    |
 > | 9          | 2006    | 2022    | 2038    |
 > | 10         | 2007    | 2023    |         |
 > | 11         | 2008    | 2024    |         |
 > | 12         | 2009    | 2025    |         |
 > | 13         | 2010    |         | 2026    |
 > | 14         | 2011    |         | 2027    |
 > | 15         | 2012    |         | 2028    |

 > Signed-off-by: Avri Altman <avri.altman@sandisk.com>

Acked-by: Peter Korsgaard <peter@korsgaard.com>

-- 
Bye, Peter Korsgaard