linux-kernel - Re: [PATCH v21 0/5] add power control in i2c

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Date:   Thu, 20 May 2021 18:56:16 +0800
From:   Hsin-Yi Wang <hsinyi@...omium.org>
To:     Wolfram Sang <wsa@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Cc:     linux-i2c <linux-i2c@...r.kernel.org>,
        Qii Wang <qii.wang@...iatek.com>,
        Devicetree List <devicetree@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Brown <broonie@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Bibby Hsieh <bibby.hsieh@...iatek.com>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH v21 0/5] add power control in i2c

On Fri, May 7, 2021 at 9:14 PM Hsin-Yi Wang <hsinyi@...omium.org> wrote:
>
> Although in the most platforms, the power of eeprom
> and i2c are alway on, some platforms disable the
> eeprom and i2c power in order to meet low power request.
>
> This patch add the pm_runtime ops to control power to
> support all platforms.
>

Hi maintainers,

Gentle ping on the thread. (the 4th patch is already picked) Thanks.

> Changes since v20:
>  - fix regulator check logic in suspend/resume.
>
> Changes since v19:
>  - resend v19 with fix tag added.
>
> Changes since v18:
>  - Fix a function name conflict with drivers/gpu/drm/i915/selftests/i915_gem.c
>
> Changes since v17:
>  - Add a patch to fix unbalanced regulator disabling.
>  - Add dts patch.
>
> Changes since v16:
>  - request regulator in device instead of in the core.
>  - control regulator only if it's provided.
>
> Changes since v15:
>  - Squash the fix[1] for v15.
> [1] https://patchwork.ozlabs.org/project/linux-i2c/patch/20200522101327.13456-1-m.szyprowski@samsung.com/
>
> Changes since v14:
>  - change the return value in normal condition
>  - access the variable after NULL pointer checking
>  - add ack tag
>
> Changes since v13:
>  - fixup some logic error
>
> Changes since v12:
>  - rebase onto v5.7-rc1
>  - change the property description in binding
>
> Changes since v11:
>  - use suspend_late/resume_early instead of suspend/resume
>  - rebase onto v5.6-rc1
>
> Changes since v10:
>  - fixup some worng codes
>
> Changes since v9:
>  - fixup build error
>  - remove redundant code
>
> Changes since v8:
>  - fixup some wrong code
>  - remove redundant message
>
> [... snip ...]
>
>
> Bibby Hsieh (1):
>   i2c: core: support bus regulator controlling in adapter
>
> Hsin-Yi Wang (4):
>   dt-binding: i2c: mt65xx: add vbus-supply property
>   i2c: mediatek: mt65xx: add optional vbus-supply
>   misc: eeprom: at24: check suspend status before disable regulator
>   arm64: dts: mt8183: add supply name for eeprom
>
>  .../devicetree/bindings/i2c/i2c-mt65xx.txt    |  1 +
>  .../dts/mediatek/mt8183-kukui-kakadu.dtsi     |  4 +
>  .../dts/mediatek/mt8183-kukui-kodama.dtsi     |  4 +
>  .../boot/dts/mediatek/mt8183-kukui-krane.dtsi |  4 +
>  drivers/i2c/busses/i2c-mt65xx.c               |  7 ++
>  drivers/i2c/i2c-core-base.c                   | 95 +++++++++++++++++++
>  drivers/misc/eeprom/at24.c                    |  6 +-
>  include/linux/i2c.h                           |  2 +
>  8 files changed, 121 insertions(+), 2 deletions(-)
>
> --
> 2.31.1.607.g51e8a6a459-goog
>