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From: Stefan Wahren <stefan.wahren@i2se.com>
To: Scott Branden <sbranden@broadcom.com>,
	Ray Jui <rjui@broadcom.com>, Jon Mason <jonmason@broadcom.com>,
	Stephen Warren <swarren@wwwdotorg.org>,
	Lee Jones <lee@kernel.org>, Eric Anholt <eric@anholt.net>
Cc: Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	kernel@martin.sperl.org, devicetree@vger.kernel.org,
	linux-rpi-kernel@lists.infradead.org, linux-mmc@vger.kernel.org,
	bcm-kernel-feedback-list@broadcom.com,
	Stefan Wahren <stefan.wahren@i2se.com>
Subject: [PATCH 0/5 RFC] mmc: sdhci-iproc: add bcm2835 support
Date: Sun, 17 Jan 2016 14:58:59 +0000	[thread overview]
Message-ID: <1453042744-16196-1-git-send-email-stefan.wahren@i2se.com> (raw)

This patch series based on the suggestion of Scott Branden to implement
bcm2835 support into sdhci-iproc [1].

These changes provide the following advantages:
  * no need to maintain a separate driver for bcm2835
  * improve support and test coverage of bcm2835 mmc support
  * get the rid of SDHCI_CAPABILITIES hack in bcm2835_sdhci_readl
  * increase write performance by avoiding delays in write ops

Patch 1 and 2 adopt two sdhci-bcm2835 fixes to sdhci-iproc. The third patch
tries to specify as much quirks as possible in the bcm283x.dtsi as possible.
Patch 4 and 5 are the actually changes for bcm2835 support.

These series has been tested on Raspberry Pi B with dd (direct I/O):

sdhci-bcm2835

378 kB/s WRITE
10,6 MB/s READ

sdhci-iproc (after applying patch series)

881 kB/s WRITE
10,8 MB/s READ

[1] - https://lkml.org/lkml/2015/12/22/525

Stefan Wahren (5):
  mmc: sdhci-iproc: Clean up platform allocations if shdci init fails
  mmc: sdhci-iproc: Actually enable the clock
  ARM: bcm283x: specify sdhci quirks in dtsi file
  mmc: sdhci-iproc: add bcm2835 support
  DT: sdhci-iproc: add bcm2835 compatible

 .../devicetree/bindings/mmc/brcm,sdhci-iproc.txt   |    5 ++-
 arch/arm/boot/dts/bcm283x.dtsi                     |    2 ++
 drivers/mmc/host/Kconfig                           |    6 ++--
 drivers/mmc/host/sdhci-iproc.c                     |   33 ++++++++++++++++++--
 4 files changed, 39 insertions(+), 7 deletions(-)

-- 
1.7.9.5


             reply	other threads:[~2016-01-17 14:58 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-17 14:58 Stefan Wahren [this message]
     [not found] ` <1453042744-16196-1-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
2016-01-17 14:59   ` [PATCH 1/5 RFC] mmc: sdhci-iproc: Clean up platform allocations if shdci init fails Stefan Wahren
2016-01-18 21:31     ` Scott Branden
2016-01-27 14:16     ` Ulf Hansson
2016-01-17 14:59   ` [PATCH 2/5 RFC] mmc: sdhci-iproc: Actually enable the clock Stefan Wahren
2016-01-18 21:35     ` Scott Branden
     [not found]     ` <1453042744-16196-3-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
2016-01-27 14:16       ` Ulf Hansson
2016-01-27 19:11         ` Stefan Wahren
2016-01-27 21:11           ` Ulf Hansson
2016-01-17 14:59   ` [PATCH 3/5 RFC] ARM: bcm283x: specify sdhci quirks in dtsi file Stefan Wahren
2016-01-18 21:40     ` Scott Branden
     [not found]     ` <1453042744-16196-4-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
2016-01-26  4:31       ` Stephen Warren
2016-01-17 14:59   ` [PATCH 4/5 RFC] mmc: sdhci-iproc: add bcm2835 support Stefan Wahren
2016-01-18 21:47     ` Scott Branden
2016-01-19 19:25       ` Stefan Wahren
2016-01-19 19:47         ` Scott Branden
2016-01-19  1:32     ` Jaehoon Chung
     [not found]       ` <569D923D.60306-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2016-01-20 21:23         ` Stefan Wahren
     [not found]     ` <1453042744-16196-5-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
2016-01-26  4:34       ` Stephen Warren
2016-01-17 14:59 ` [PATCH 5/5 RFC] DT: sdhci-iproc: add bcm2835 compatible Stefan Wahren
2016-01-18 21:47   ` Scott Branden
2016-01-20 16:50   ` Rob Herring
2016-01-19 21:00 ` [PATCH 0/5 RFC] mmc: sdhci-iproc: add bcm2835 support Eric Anholt
2016-01-20 21:18   ` Stefan Wahren
2016-01-28 22:19     ` Eric Anholt

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