Re: [RFC PATCH 0/2] mmc: sdhci: Add SDHCI_QUIRK2_BROKEN_SDMA_BOUNDARY_BUFFER

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Srinivas,

On 6/28/2017 7:05 PM, srinivas.kandagatla@xxxxxxxxxx wrote:
From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>

This patchset adds quirk to support cards which have issues when sdma
boundary buffer bits are programmed in Block Size Register (0x04)
when using ADMA.

Thanks for pointing out the reason of failure without this patch.
Earlier I could not find the reason.

Previous discussion link :-
https://patchwork.kernel.org/patch/9200579/



First patch adds quirk and second one uses that quirk in msm sdhci driver.

Not sure if quirk will be the right way to go about this, or whether we should make this functionality default since ADMA does not
uses this (as per spec) ?
Since other systems should not break (as Adrian was mentioning in the discussion link above).

Adrian/Ulf will know better on this.


Tested on DB410c with WLAN SDIO card.

thanks,
srini

Srinivas Kandagatla (2):
   mmc: sdhci: add quirk SDHCI_QUIRK2_BROKEN_SDMA_BOUNDARY_BUFFER
   mmc: sdhci-msm: enable SDHCI_QUIRK2_BROKEN_SDMA_BOUNDARY_BUFFER

  drivers/mmc/host/sdhci-msm.c |  3 ++-
  drivers/mmc/host/sdhci.c     | 24 ++++++++++++++++++------
  drivers/mmc/host/sdhci.h     |  2 ++
  3 files changed, 22 insertions(+), 7 deletions(-)


--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
--
To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [Linux for Sparc]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux