linux-kernel - Re: [PATCH v5 0/9] Add sd/emmc support for stih407 family silicon

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Message-ID: <5541EE35.2070002@st.com>
Date:	Thu, 30 Apr 2015 10:56:21 +0200
From:	Maxime Coquelin <maxime.coquelin@...com>
To:	Peter Griffin <peter.griffin@...aro.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <patrice.chotard@...com>,
	<ulf.hansson@...aro.org>, <peppe.cavallaro@...com>
CC:	<lee.jones@...aro.org>, <devicetree@...r.kernel.org>,
	<linux-mmc@...r.kernel.org>
Subject: Re: [PATCH v5 0/9] Add sd/emmc support for stih407 family silicon



On 04/10/2015 11:40 AM, Peter Griffin wrote:
> Hi,
>
> This series adds sd/emmc support to the sdhci-st.c driver for stih407
> family silicon. The changes mainly involve configuring some extra glue
> registers in the flashSS which configure the Arasan controller.
>
> This series also adds support for UHS modes for eMMC. To allow
> UHS HS200/SD104 modes to function correctly, due to the
> tight timing constriants, support for delay management is also added.
> Two types of delay management are supported, static delay management and
> dynamic delay management, this delay management is only available
> on eMMC pads on stih410 and later silicon.
>
> This series has been tested with stih410-b2120 revd on eMMC and sd, at
> various clock speeds. As part of this testing a bug was also found in the
> upstream flexgen clock set_rate implementation (now fixed upstream).
>
>      max-frequency = 200Mhz
>      /dev/mmcblk0p1:
>       Timing buffered disk reads: 270 MB in  3.02 seconds =  89.54 MB/sec
>      
>      max-frequency = 100Mhz
>      root@...ian-armhf:~# hdparm -t /dev/mmcblk0p1
>      /dev/mmcblk0p1:
>       Timing buffered disk reads: 210 MB in  3.00 seconds =  70.00 MB/sec
>      
>      max-frequency = 50Mhz
>      root@...ian-armhf:~# hdparm -t /dev/mmcblk0p1
>      /dev/mmcblk0p1:
>       Timing buffered disk reads: 118 MB in  3.00 seconds =  39.28 MB/sec
>
> It has also been tested on stih416-b2020 to ensure we have caused no
> regressions. Finally the dt documentation has been updated to reflect
> the changes in the driver code. Intrestingly it seems we are the first
> upstream platform to be using some of the uhs bindings such as
> sd-uhs-sdr104.
>
> Changes since v4:
>   - Fixup typo (Pete)
>
> Changes since v3:
>   - Rebased on Ulf's mmc next branch (rc5 based) (Ulf)
>
> Changes since v2:
>   - Some whitespace fixups (Max)
>   - if (!ioaddr) suggestion (Max)
>   - Add stih418-b2199 suport (Max)
>   - Stih410 to STiH410 fixes (Max)
>   - rebased on v4.0-rc6 (Pete)
>
> Changes since v1:
>   - Partition the changes into smaller patches to aid review process (Ulf)
>
> Peter Griffin (9):
>    mmc: sdhci-st: Add macros for register offsets and bitfields for mmcss
>      glue regs
>    mmc: sdhci-st: Add support for de-asserting reset signal and top regs
>      resource
>    mmc: sdhci-st: Add delay management functions for top registers
>      (eMMC).
>    mmc: sdhci-st: Add st_mmcss_cconfig function to configure mmcss glue
>      registers.
>    mmc: sdhci-st: Add sdhci_st_set_uhs_signaling function.
>    mmc: sdhci-st: Update the quirks for this controller.
>    mmc: sdhci-st: Update ST SDHCI binding documentation.
>    ARM: STi: DT: STiH407: Add dt nodes for sdhci and emmc.
>    ARM: STi: DT: STiH418: Add dt nodes for sdhci and emmc.
>
>   Documentation/devicetree/bindings/mmc/sdhci-st.txt | 100 +++++-
>   arch/arm/boot/dts/stih407-family.dtsi              |  30 ++
>   arch/arm/boot/dts/stih410-b2120.dts                |  10 +
>   arch/arm/boot/dts/stih418-b2199.dts                |  12 +
>   arch/arm/boot/dts/stihxxx-b2120.dtsi               |   8 +
>   drivers/mmc/host/sdhci-st.c                        | 354 ++++++++++++++++++++-
>   6 files changed, 500 insertions(+), 14 deletions(-)
>


Patches 8 & 9 applied to STi DT branch.

Thanks,
Maxime
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