linux-kernel - Re: [v16, 0/7] Fix eSDHC host version register bug

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Date:   Wed, 9 Nov 2016 19:27:47 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Yangbo Lu <yangbo.lu@....com>
Cc:     linux-mmc <linux-mmc@...r.kernel.org>,
        Scott Wood <oss@...error.net>, Arnd Bergmann <arnd@...db.de>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        iommu@...ts.linux-foundation.org, netdev@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Russell King <linux@....linux.org.uk>,
        Jochen Friedrich <jochen@...am.de>,
        Joerg Roedel <joro@...tes.org>,
        Claudiu Manoil <claudiu.manoil@...escale.com>,
        Bhupesh Sharma <bhupesh.sharma@...escale.com>,
        Qiang Zhao <qiang.zhao@....com>,
        Kumar Gala <galak@...eaurora.org>, Leo Li <leoyang.li@....com>,
        Xiaobo Xie <xiaobo.xie@....com>,
        Minghuan Lian <minghuan.lian@....com>
Subject: Re: [v16, 0/7] Fix eSDHC host version register bug

- i2c-list

On 9 November 2016 at 04:14, Yangbo Lu <yangbo.lu@....com> wrote:
> This patchset is used to fix a host version register bug in the T4240-R1.0-R2.0
> eSDHC controller. To match the SoC version and revision, 15 previous version
> patchsets had tried many methods but all of them were rejected by reviewers.
> Such as
>         - dts compatible method
>         - syscon method
>         - ifdef PPC method
>         - GUTS driver getting SVR method
> Anrd suggested a soc_device_match method in v10, and this is the only available
> method left now. This v11 patchset introduces the soc_device_match interface in
> soc driver.
>
> The first four patches of Yangbo are to add the GUTS driver. This is used to
> register a soc device which contain soc version and revision information.
> The other three patches introduce the soc_device_match method in soc driver
> and apply it on esdhc driver to fix this bug.
>
> ---
> Changes for v15:
>         - Dropped patch 'dt: bindings: update Freescale DCFG compatible'
>           since the work had been done by below patch on ShawnGuo's linux tree.
>           'dt-bindings: fsl: add LS1043A/LS1046A/LS2080A compatible for SCFG
>            and DCFG'
>         - Fixed error code issue in guts driver
> Changes for v16:
>         - Dropped patch 'powerpc/fsl: move mpc85xx.h to include/linux/fsl'
>         - Added a bug-fix patch from Geert
> ---
>
> Arnd Bergmann (1):
>   base: soc: introduce soc_device_match() interface
>
> Geert Uytterhoeven (1):
>   base: soc: Check for NULL SoC device attributes
>
> Yangbo Lu (5):
>   ARM64: dts: ls2080a: add device configuration node
>   dt: bindings: move guts devicetree doc out of powerpc directory
>   soc: fsl: add GUTS driver for QorIQ platforms
>   MAINTAINERS: add entry for Freescale SoC drivers
>   mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0
>
>  .../bindings/{powerpc => soc}/fsl/guts.txt         |   3 +
>  MAINTAINERS                                        |  11 +-
>  arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi     |   6 +
>  drivers/base/Kconfig                               |   1 +
>  drivers/base/soc.c                                 |  70 ++++++
>  drivers/mmc/host/Kconfig                           |   1 +
>  drivers/mmc/host/sdhci-of-esdhc.c                  |  20 ++
>  drivers/soc/Kconfig                                |   3 +-
>  drivers/soc/fsl/Kconfig                            |  18 ++
>  drivers/soc/fsl/Makefile                           |   1 +
>  drivers/soc/fsl/guts.c                             | 236 +++++++++++++++++++++
>  include/linux/fsl/guts.h                           | 125 ++++++-----
>  include/linux/sys_soc.h                            |   3 +
>  13 files changed, 447 insertions(+), 51 deletions(-)
>  rename Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
>  create mode 100644 drivers/soc/fsl/Kconfig
>  create mode 100644 drivers/soc/fsl/guts.c
>
> --
> 2.1.0.27.g96db324
>

Thanks, applied on my mmc tree for next!

I noticed that some DT compatibles weren't documented, according to
checkpatch. Please fix that asap!

Kind regards
Ulf Hansson