linux-kernel - Re: [PATCH v3 00/11] mmc: sdhci-omap: Add UHS/HS200 mode support

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Date:   Thu, 15 Mar 2018 10:52:26 +0200
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Kishon Vijay Abraham I <kishon@...com>
Cc:     Tony Lindgren <tony@...mide.com>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        devicetree@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-omap <linux-omap@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3 00/11] mmc: sdhci-omap: Add UHS/HS200 mode support

On 15/03/18 10:47, Ulf Hansson wrote:
> On 7 March 2018 at 14:20, Kishon Vijay Abraham I <kishon@...com> wrote:
>> Add UHS/HS200 mode support in sdhci-omap. The programming sequence
>> for voltage switching, tuning is followed from AM572x TRM
>> http://www.ti.com/lit/ug/spruhz6i/spruhz6i.pdf
>> (Similar to all AM57x/DRA7x SoCs). The patch series also implements
>> workaround for errata published in
>> http://www.ti.com/lit/er/sprz429k/sprz429k.pdf
>>
>> patches are created on top of
>> git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git next
>>
>> Patches in v2 already applied to mmc -next are dropped from the
>> series.
>>
>> Changes from v2:
>> *) Changed SW timeout logic as per Adrians's suggestion
>> *) Validated SDIO with the current patches (added a couple of fixes
>>    found while adding SDIO support).
>> *) Used soc_device_match() instead of pdata-quirks as per Tony's
>>    suggestions.
>>
>> Changes from v1:
>> *) Only poll on DAT0 and DATI for card_busy status
>> *) Cleanup iodelay patch as suggested by Tony.
>> *) Added quirk to disable HW timeout
>> *) Use the existing data timer but program a relatively accurate
>>    SW timeout value (Impacts all platforms)
>> *) Fix a bug in sdhci which was using data_timer for non data line
>>    commands
>>
>> Kishon Vijay Abraham I (11):
>>   mmc: sdhci-omap: Fix when capabilities are obtained from
>>     SDHCI_CAPABILITIES reg
>>   mmc: sdhci-omap: Remove setting ADMA capability in driver
>>   mmc: sdhci-omap: Workaround for Errata i843
>>   mmc: sdhci-omap: Invoke sdhci_get_of_property to read sdhci dt
>>     properties
>>   mmc: sdhci: Disable HS200 mode if controller can't support 1.8v
>>   mmc: sdhci: Add quirk to disable HW timeout
>>   mmc: sdhci: Program a relatively accurate SW timeout value
>>   mmc: sdhci-omap: Workaround for Errata i834
>>   dt-bindings: sdhci-omap: Add K2G specific binding
>>   mmc: sdhci-omap: Add support for MMC/SD controller in k2g SoC
>>   mmc: sdhci-omap: Add sdhci_omap specific ops for enable_sdio_irq
>>
>>  .../devicetree/bindings/mmc/sdhci-omap.txt         |  2 +
>>  drivers/mmc/host/sdhci-omap.c                      | 78 +++++++++++++++++++---
>>  drivers/mmc/host/sdhci.c                           | 75 +++++++++++++++++----
>>  drivers/mmc/host/sdhci.h                           | 15 +++++
>>  4 files changed, 148 insertions(+), 22 deletions(-)
>>
>> --
>> 2.11.0
>>
> 
> Overall this looks good to me, however it seems like we need to give
> Adrian a little more time to comment.
> 

I will try to look at it today.