On Sun, 2022-04-17 at 13:16 +0200, Bean Huo wrote: > From: Bean Huo <beanhuo@xxxxxxxxxx> > > We can use GEN_CMD (CMD56) to read a data block with vendor-specific > format and meaning, which is very helpful and useful for customers to > analyze device health. This patch is to add support for this command. > > At the same time, in order to make CMD56 universal, let more users of > mmc-utils can benefit from this. We will allow the user to enter > [arg] > for special commands. Because some eMMC vendors provide an additional > set of commands beyond the GEN_CMD (CMD56) definition in the JEDEC > specification. These additional commands are implemented using > generic > CMD56 commands, and they return a wealth of useful information about > the > state of the NAND device. For these special purposes, the [31:1]stuff > bits in the CMD56 argument are used. You can refer to Micron eMMC > "TN-FC-32: e·MMC Device Health Report" as an example. > > I didn't add data parsing, just print the raw data as it is vendor- > specific. > > Signed-off-by: Bean Huo <beanhuo@xxxxxxxxxx> > Acked-by: Avri Altman <Avri.Altman@xxxxxxx> > Tested-by: Rossler Jakob (Nokia - DE/Ulm) <jakob.rossler@xxxxxxxxx> > --- Hi Ullf, Would you be willing to merge this patch into your mmc-utils git repo? Kind regards, Bean
