REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1140
Some of the boards report that just after we change the clock frequency to 200MHz link is unable to stabilize fast enough and when driver sends the CMD13 it will often fail randomly with CRC error. To protect against this kind of random failures this patch series will make the driver retry the commands that failed due to random CRC errors. Since async code has not yet been tested it has been put into separate patch. That patch is not needed to solve most pressing CMD13 issues. changes in v2: -Split first patch into bugfix and refactor -Normal interrupt status register will now only be read once during SdMmcCheckTrbResult -We will no longer clear the data transfer timeout error in SdMmcCheckAndRecoverErrors. Instead we will immedieatly return for such case and register reset will be done in next SdMmcExecTrb Tets performed: -Boot eMMC in HS400 -Boot eMMC in HS400 with simulated CRC error on every first CMD13 Cc: Hao A Wu <hao.a...@intel.com> Cc: Marcin Wojtas <m...@semihalf.com> Cc: Zhichao Gao <zhichao....@intel.com> Cc: Liming Gao <liming....@intel.com> Signed-off-by: Mateusz Albecki <mateusz.albe...@intel.com> Mateusz Albecki (4): MdeModulePkg/SdMmcPciHcDxe: Fix DAT lane SW reset MdeModulePkg/SdMmcPciHcDxe: Refactor command error detection MdeModulePkg/SdMmcPciHcDxe: Add retries for sync commands MdeModulePkg/SdMmcPciHcDxe: Add retries for async commands MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c | 89 ++++++--- MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.h | 5 +- MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHci.c | 218 ++++++++++++++------- 3 files changed, 204 insertions(+), 108 deletions(-) -- 2.14.1.windows.1 -------------------------------------------------------------------- Intel Technology Poland sp. z o.o. ul. Slowackiego 173 | 80-298 Gdansk | Sad Rejonowy Gdansk Polnoc | VII Wydzial Gospodarczy Krajowego Rejestru Sadowego - KRS 101882 | NIP 957-07-52-316 | Kapital zakladowy 200.000 PLN. Ta wiadomosc wraz z zalacznikami jest przeznaczona dla okreslonego adresata i moze zawierac informacje poufne. W razie przypadkowego otrzymania tej wiadomosci, prosimy o powiadomienie nadawcy oraz trwale jej usuniecie; jakiekolwiek przegladanie lub rozpowszechnianie jest zabronione. This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). If you are not the intended recipient, please contact the sender and delete all copies; any review or distribution by others is strictly prohibited. -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#53216): https://edk2.groups.io/g/devel/message/53216 Mute This Topic: https://groups.io/mt/69691992/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
