From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ritesh Harjani Subject: Re: [RFC PATCH 0/2] mmc: sdhci: Add SDHCI_QUIRK2_BROKEN_SDMA_BOUNDARY_BUFFER Date: Wed, 28 Jun 2017 22:51:57 +0530 Message-ID: <552ef0ba-91d5-ab9c-d55c-ac008608a689@codeaurora.org> References: <20170628133504.17422-1-srinivas.kandagatla@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20170628133504.17422-1-srinivas.kandagatla@linaro.org> Content-Language: en-US Sender: linux-arm-msm-owner@vger.kernel.org To: srinivas.kandagatla@linaro.org, Adrian Hunter , Ulf Hansson Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org List-Id: linux-mmc@vger.kernel.org Hi Srinivas, On 6/28/2017 7:05 PM, srinivas.kandagatla@linaro.org wrote: > From: Srinivas Kandagatla > > 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