From: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se> 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 | 22 ++++++++++------------ 3 files changed, 15 insertions(+), 12 deletions(-) -- 2.19.1
