From: Stephen Warren <swarren@wwwdotorg.org>
To: Scott Branden <sbranden@broadcom.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Russell King <rmk+kernel@arm.linux.org.uk>,
Peter Griffin <peter.griffin@linaro.org>,
Chris Ball <chris@printf.net>, Piotr Krol <pietrushnic@gmail.com>
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
Joe Perches <joe@perches.com>,
linux-rpi-kernel@lists.infradead.org, Ray Jui <rjui@broadcom.com>,
bcm-kernel-feedback-list@broadcom.com
Subject: Re: [PATCHv2 5/5] mmc: sdhci-bcm2835: add sdhci quirk SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12
Date: Wed, 05 Nov 2014 21:50:52 -0700 [thread overview]
Message-ID: <545AFE2C.5050105@wwwdotorg.org> (raw)
In-Reply-To: <5459CB76.3060601@broadcom.com>
On 11/05/2014 12:02 AM, Scott Branden wrote:
> On 14-11-04 09:00 PM, Stephen Warren wrote:
>> On 10/30/2014 12:36 AM, Scott Branden wrote:
>>> SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 is missing and needed for this
>>> controller.
>>
>> This seems fine, although any explanation of why this quirk is needed
>> would be useful.
>>
> I don't know who to talk to at Arasan about this. Will try hunting
> around a little for more info as to why this is needed to have eMMC and
> SD work properly through our internal testing on other non-2835 chipset
> that shares the same SDHCI controller as 2835.
I thought I heard that this wasn't a bug in the controller itself, but
rather an integration issue between the IP core and the register bus
it's attached to. Consequently, it may be SoC-specific or at least have
SoC-specific variations?
next prev parent reply other threads:[~2014-11-06 4:50 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Scott Branden <sbranden@broadcom.com>
2014-10-15 2:01 ` [PATCH 0/1] sdhci-bcm2835: added quirk and removed udelay in write ops Scott Branden
2014-10-15 2:01 ` [PATCH 1/1] mmc: " Scott Branden
2014-10-17 2:50 ` Stephen Warren
2014-10-15 16:43 ` Scott Branden
2014-10-18 2:37 ` Stephen Warren
2014-10-18 6:40 ` Scott Branden
2014-10-30 6:36 ` [PATCHv2 0/5] " Scott Branden
2014-10-30 6:36 ` [PATCHv2 1/5] mmc: sdhci-bcm2835: group read and write functions to improve readability Scott Branden
2014-10-30 6:36 ` [PATCHv2 2/5] mmc: sdhci-bcm2835: make shift calculations consistent Scott Branden
2014-11-05 4:48 ` Stephen Warren
2014-11-05 5:19 ` Scott Branden
2014-10-30 6:36 ` [PATCHv2 3/5] mmc: shdci-bcm2835: add efficient back-to-back write workaround Scott Branden
2014-11-05 4:57 ` Stephen Warren
2014-11-05 6:55 ` Scott Branden
2014-11-06 4:48 ` Stephen Warren
2014-11-07 18:29 ` Scott Branden
2014-10-30 6:36 ` [PATCHv2 4/5] mmc: shdci-bcm2835: add verify for 32-bit back-to-back workaround Scott Branden
2014-11-05 4:44 ` Stephen Warren
2014-11-05 5:26 ` Scott Branden
2014-11-05 4:59 ` Stephen Warren
2014-11-05 7:00 ` Scott Branden
2014-11-06 5:01 ` Stephen Warren
2014-11-07 18:31 ` Scott Branden
2015-12-22 15:55 ` Stefan Wahren
2015-12-22 19:23 ` Scott Branden
2015-12-22 20:13 ` Stefan Wahren
2014-10-30 6:36 ` [PATCHv2 5/5] mmc: sdhci-bcm2835: add sdhci quirk SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 Scott Branden
2014-11-05 5:00 ` Stephen Warren
2014-11-05 7:02 ` Scott Branden
2014-11-06 4:50 ` Stephen Warren [this message]
2014-11-07 18:30 ` Scott Branden
2014-12-05 0:11 ` [PATCH] mmc: sdhci: add quirk for ACMD23 broken Scott Branden
2014-12-05 0:16 ` [PATCH v2] " Scott Branden
2014-12-17 18:36 ` Scott Branden
2014-12-17 19:48 ` Chris Ball
2014-12-17 20:42 ` Scott Branden
2015-02-10 0:06 ` [PATCH 0/4] Add support for IPROC SDHCI controller Scott Branden
2015-02-10 0:06 ` [PATCH 1/4] mmc: sdhci: add quirk for ACMD23 broken Scott Branden
2015-02-10 0:06 ` [PATCH 2/4] mmc: sdhci: do not set AUTO_CMD12 for multi-block CMD53 Scott Branden
2015-02-10 0:06 ` [PATCH 3/4] mmc: sdhci-iproc: add IPROC SDHCI driver Scott Branden
2015-02-10 0:06 ` [PATCH 4/4] mmc: sdhci-iproc: add device tree bindings Scott Branden
2015-03-02 23:50 ` Florian Fainelli
2015-03-04 23:14 ` Scott Branden
[not found] ` <1423526791-29453-1-git-send-email-sbranden-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2015-02-26 17:28 ` [PATCH 0/4] Add support for IPROC SDHCI controller Scott Branden
2015-03-05 15:59 ` [PATCH RESEND " Scott Branden
2015-03-05 15:59 ` [PATCH 1/4] mmc: sdhci: add quirk for ACMD23 broken Scott Branden
2015-03-05 15:59 ` [PATCH 2/4] mmc: sdhci: do not set AUTO_CMD12 for multi-block CMD53 Scott Branden
2015-03-05 15:59 ` [PATCH 3/4] mmc: sdhci-iproc: add IPROC SDHCI driver Scott Branden
2015-03-05 15:59 ` [PATCH 4/4] mmc: sdhci-iproc: add device tree bindings Scott Branden
2015-03-05 16:16 ` [PATCH RESEND 0/4] Add support for IPROC SDHCI controller Ulf Hansson
2015-03-05 19:57 ` Florian Fainelli
2015-03-10 18:35 ` [PATCH] mmc: sdhci: fix card presence logic in sdhci_request function Scott Branden
2015-03-13 10:14 ` Ulf Hansson
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