linux-kernel - Re: [PATCH 0/4] mmc: mmci: add busy detect for stm32 sdmmc variant

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Message-ID: <6cae3029-b40c-d43c-0712-47a472e8b1af@st.com>
Date:   Thu, 11 Apr 2019 15:51:10 +0200
From:   Ludovic BARRE <ludovic.barre@...com>
To:     Ulf Hansson <ulf.hansson@...aro.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>
Subject: Re: [PATCH 0/4] mmc: mmci: add busy detect for stm32 sdmmc variant

hi Ulf

On 4/11/19 3:29 PM, Ulf Hansson wrote:
> On Thu, 11 Apr 2019 at 14:37, Ludovic BARRE <ludovic.barre@...com> wrote:
>>
>> Hi Ulf
>>
>> Just a gentleman ping about this series.
>> I sent this series at same time of dt_mode
>> (no dependence between both).
> 
> Thanks for pinging.
> 
> It's been a busy period, with travels etc. I am just catching up on
> everything and I will soon come back to this.

No problem, I saw lot of power group presentations at linaro connect :-)

> 
> I haven't tried to apply this on top of the other recent queued
> changes for mmci, but perhaps you can check if a rebase is needed?

I try on the last mmc next, rebase, build and stm32mp157 test OK

> Especially since I plan to run this on my ux500 board.
> 
> Kind regards
> Uffe
> 
>>
>> BR
>> Ludo
>>
>> On 3/5/19 5:10 PM, Ludovic Barre wrote:
>>> From: Ludovic Barre <ludovic.barre@...com>
>>>
>>> This patch series adds busy detect for stm32 sdmmc variant.
>>> Some adaptations are required:
>>> -Avoid to check and poll busy status when is not expected.
>>> -Clear busy status bit if busy_detect_flag and busy_detect_mask are
>>>    different.
>>> -Add hardware busy timeout with MMCIDATATIMER register.
>>>
>>> Ludovic Barre (4):
>>>     mmc: mmci: avoid fake busy polling
>>>     mmc: mmci: fix clear of busy detect status
>>>     mmc: mmci: add hardware busy timeout feature
>>>     mmc: mmci: add busy detect for stm32 sdmmc variant
>>>
>>>    drivers/mmc/host/mmci.c | 67 +++++++++++++++++++++++++++++++++++++++----------
>>>    drivers/mmc/host/mmci.h |  3 +++
>>>    2 files changed, 57 insertions(+), 13 deletions(-)
>>>