linux-kernel - Re: [PATCH 0/2] add regulator driver and mfd cell for Intel Cherry Trail Whiskey Cove PMIC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20191025075335.GC32742@smile.fi.intel.com>
Date:   Fri, 25 Oct 2019 10:53:35 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andrey Zhizhikin <andrey.z@...il.com>,
        Hans de Goede <hdegoede@...hat.com>
Cc:     lgirdwood@...il.com, broonie@...nel.org, lee.jones@...aro.org,
        linux-kernel@...r.kernel.org,
        Andrey Zhizhikin <andrey.zhizhikin@...ca-geosystems.com>
Subject: Re: [PATCH 0/2] add regulator driver and mfd cell for Intel Cherry
 Trail Whiskey Cove PMIC

On Thu, Oct 24, 2019 at 02:29:37PM +0000, Andrey Zhizhikin wrote:
> This patchset introduces additional regulator driver for Intel Cherry
> Trail Whiskey Cove PMIC. It also adds a cell in mfd driver for this
> PMIC, which is used to instantiate this regulator.
> 
> Regulator support for this PMIC was present in kernel release from Intel
> targeted Aero platform, but was not entirely ported upstream and has
> been omitted in mainline kernel releases. Consecutively, absence of
> regulator caused the SD Card interface not to be provided with Vqcc
> voltage source needed to operate with UHS-I cards.
> 
> Following patches are addessing this issue and making sd card interface
> to be fully operable with UHS-I cards. Regulator driver lists an ACPI id
> of the SD Card interface in consumers and exposes optional "vqmmc"
> voltage source, which mmc driver uses to switch signalling voltages
> between 1.8V and 3.3V. 
> 
> This set contains of 2 patches: one is implementing the regulator driver
> (based on a non upstreamed version from Intel Aero), and another patch
> registers this driver as mfd cell in exising Whiskey Cove PMIC driver.

Thank you.
Hans, Cc'ed, has quite interested in these kind of patches.
Am I right, Hans?

> 
> 
> Andrey Zhizhikin (2):
>   regulator: add support for Intel Cherry Whiskey Cove regulator
>   mfd: add regulator cell to Cherry Trail Whiskey Cove PMIC
> 
>  drivers/mfd/intel_soc_pmic_chtwc.c            |  15 +-
>  drivers/regulator/Kconfig                     |  10 +
>  drivers/regulator/Makefile                    |   1 +
>  drivers/regulator/intel-cht-wc-regulator.c    | 433 ++++++++++++++++++
>  .../linux/regulator/intel-cht-wc-regulator.h  |  64 +++
>  5 files changed, 521 insertions(+), 2 deletions(-)
>  create mode 100644 drivers/regulator/intel-cht-wc-regulator.c
>  create mode 100644 include/linux/regulator/intel-cht-wc-regulator.h
> 
> -- 
> 2.17.1
> 

-- 
With Best Regards,
Andy Shevchenko