All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jaehoon Chung <jh80.chung@samsung.com>
To: Guodong Xu <guodong.xu@linaro.org>,
	heiko@sntech.de, shawn.lin@rock-chips.com, robh+dt@kernel.org,
	mark.rutland@arm.com, ulf.hansson@linaro.org
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org
Subject: Re: [PATCH v5 0/2] mmc: dw_mmc: host controller reset support
Date: Fri, 12 Aug 2016 18:19:39 +0900	[thread overview]
Message-ID: <724bc267-1f6b-0211-4645-10cc49eedd48@samsung.com> (raw)
In-Reply-To: <1470991886-22412-1-git-send-email-guodong.xu@linaro.org>

Hi Guodong,

On 08/12/2016 05:51 PM, Guodong Xu wrote:
> mmc host controller registers may in abnormal state if mmc is used in
> bootloader, eg. to load kernel from eMMC. Some controllers cann't
> clear their registers when clk is set. They use dedicated reset
> logics to do this.
> 
> In this patch, a 'resets' property is added into dw_mmc dts
> node. When driver does parse_dt and probe, it calls reset API to
> triiger 'reset' of dwmmc host controller. When probe error or
> remove, it calls reset API to assert it.
> 
> Chip vendor's actual reset logics is implemented in reset driver, not
> in dw_mmc code.
> 
> Please also refer to Documentation/devicetree/bindings/reset/reset.txt
> 
> Changelog:
> v5:
>  * rebase onto https://github.com/jh80chung/dw-mmc
> v4:
>  * add reset_control_assert() and usleep() before calling _deassert().
> 
> Guodong Xu (2):
>   Documentation: synopsys-dw-mshc: add binding for resets
>   mmc: dw_mmc: add reset support to dwmmc host controller

Applied on my dw-mmc tree. Thanks!

Best Regards,
Jaehoon Chung

> 
>  .../devicetree/bindings/mmc/synopsys-dw-mshc.txt   |  4 ++++
>  drivers/mmc/host/dw_mmc.c                          | 23 +++++++++++++++++++++-
>  include/linux/mmc/dw_mmc.h                         |  2 ++
>  3 files changed, 28 insertions(+), 1 deletion(-)
> 

WARNING: multiple messages have this Message-ID (diff)
From: jh80.chung@samsung.com (Jaehoon Chung)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 0/2] mmc: dw_mmc: host controller reset support
Date: Fri, 12 Aug 2016 18:19:39 +0900	[thread overview]
Message-ID: <724bc267-1f6b-0211-4645-10cc49eedd48@samsung.com> (raw)
In-Reply-To: <1470991886-22412-1-git-send-email-guodong.xu@linaro.org>

Hi Guodong,

On 08/12/2016 05:51 PM, Guodong Xu wrote:
> mmc host controller registers may in abnormal state if mmc is used in
> bootloader, eg. to load kernel from eMMC. Some controllers cann't
> clear their registers when clk is set. They use dedicated reset
> logics to do this.
> 
> In this patch, a 'resets' property is added into dw_mmc dts
> node. When driver does parse_dt and probe, it calls reset API to
> triiger 'reset' of dwmmc host controller. When probe error or
> remove, it calls reset API to assert it.
> 
> Chip vendor's actual reset logics is implemented in reset driver, not
> in dw_mmc code.
> 
> Please also refer to Documentation/devicetree/bindings/reset/reset.txt
> 
> Changelog:
> v5:
>  * rebase onto https://github.com/jh80chung/dw-mmc
> v4:
>  * add reset_control_assert() and usleep() before calling _deassert().
> 
> Guodong Xu (2):
>   Documentation: synopsys-dw-mshc: add binding for resets
>   mmc: dw_mmc: add reset support to dwmmc host controller

Applied on my dw-mmc tree. Thanks!

Best Regards,
Jaehoon Chung

> 
>  .../devicetree/bindings/mmc/synopsys-dw-mshc.txt   |  4 ++++
>  drivers/mmc/host/dw_mmc.c                          | 23 +++++++++++++++++++++-
>  include/linux/mmc/dw_mmc.h                         |  2 ++
>  3 files changed, 28 insertions(+), 1 deletion(-)
> 

  parent reply	other threads:[~2016-08-12  9:19 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20160812085218epcas1p34d84a42a931dcc09fe7a77be59065499@epcas1p3.samsung.com>
2016-08-12  8:51 ` [PATCH v5 0/2] mmc: dw_mmc: host controller reset support Guodong Xu
2016-08-12  8:51   ` Guodong Xu
2016-08-12  8:51   ` Guodong Xu
2016-08-12  8:51   ` [PATCH v5 1/2] Documentation: synopsys-dw-mshc: add binding for resets Guodong Xu
2016-08-12  8:51     ` Guodong Xu
2016-08-12  8:51     ` Guodong Xu
2016-08-12  8:51   ` [PATCH v5 2/2] mmc: dw_mmc: add reset support to dwmmc host controller Guodong Xu
2016-08-12  8:51     ` Guodong Xu
2016-08-12  9:19   ` Jaehoon Chung [this message]
2016-08-12  9:19     ` [PATCH v5 0/2] mmc: dw_mmc: host controller reset support Jaehoon Chung

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=724bc267-1f6b-0211-4645-10cc49eedd48@samsung.com \
    --to=jh80.chung@samsung.com \
    --cc=devicetree@vger.kernel.org \
    --cc=guodong.xu@linaro.org \
    --cc=heiko@sntech.de \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mmc@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=robh+dt@kernel.org \
    --cc=shawn.lin@rock-chips.com \
    --cc=ulf.hansson@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.