On Mon, 26 Nov 2018 at 18:03, Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx> wrote: > > Hi, > > While looking at the Renesas BSP kernel I found patches which improves > the state of the hardware at probe and after runtime resume. > > Patch 1/3 make sure the module clock is enabled after resuming before > register are accessed. Patch 2/3 is the real change in this series and > brings in reset of the vendor specific callback when resetting (SCC in > the Renesas case). While 3/3 simply make sure that the IRQ mask for > Renesas boards (Gen2 and later) are in a good shape after probe (and > reset). > > In addition to addressing the state after resuming it helped unbreak a > SD card I have which are very problematic on Koelsch. Without this > series inserting the card results in: > > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > sh_mobile_sdhi ee100000.sd: Tuning procedure failed > mmc0: tuning execution failed: -5 > mmc0: error -5 whilst initialising SD card > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > > While with this series applied (patch 2/3): > > sh_mobile_sdhi ee100000.sd: timeout waiting for hardware interrupt (CMD19) > mmc0: new ultra high speed SDR50 SDHC card at address aaaa > mmcblk0: mmc0:aaaa SU04G 3.69 GiB > mmcblk0: p1 p2 > > Patch 1/3 was previously part of 2/3 but as it deals with a unrelated > issue it's here broken out to a separate patch. Patch 3/3 have once been > posted outside this series bit after comments from Wolfram it's brought > back as it now deepens on 2/3. > > Most changes in this series are based on similar work from Masaharu > Hayakawa but for this version all changes now differ quiet a lot from > his work. All mails sent to him bounce with a "Undelivered Mail > Returned to Sender" error. I therefor felt the need to claim authorship > as I don't want to post blame of my (potential) mistakes on some else. > > Niklas Söderlund (3): > mmc: tmio: enable module clock before resetting when resuming > mmc: tmio: fix reset operation > mmc: renesas_sdhi: add initial setting of interrupt mask register > > drivers/mmc/host/renesas_sdhi_core.c | 4 ++++ > drivers/mmc/host/tmio_mmc.h | 1 + > drivers/mmc/host/tmio_mmc_core.c | 27 +++++++++++++++------------ > 3 files changed, 20 insertions(+), 12 deletions(-) > > -- > 2.19.1 > Applied for next, thanks! Kind regards Uffe
