On 16 February 2017 at 08:03, Heiner Kallweit <hkallweit1@xxxxxxxxx> wrote: > Am 15.02.2017 um 17:54 schrieb Kevin Hilman: >> Heiner Kallweit <hkallweit1@xxxxxxxxx> writes: >> >>> CMD23 isn't supported on meson-gx and therefore the "set block count" >>> command isn't used. So remove this dead code. >> >> I'm admittedly a bit unfamiliar with the MMC spec and wrote this driver >> mostly by looking at the vendor driver, so forgive the silly >> questions... >> >> Why isn't CMD23 supported, and should we support instead of deleting >> this support? >> > As far as I understand this needs to be supported by the host controller. > And setting the respective host flag to enable CMD23 mode lead to a > non-working driver when testing on my system. CMD23 can be supported by the host *driver*, you don't need HW-support to implement this. You may for example be inspired by the mmci.c driver to understand how to implement this. Looks for "mrq->sbc". [...] Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
