From: Lee Jones <lee.jones@linaro.org>
To: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Sangbeom Kim <sbkim73@samsung.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Samuel Ortiz <sameo@linux.intel.com>,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-samsung-soc@vger.kernel.org,
Sachin Kamat <sachin.kamat@linaro.org>,
Kyungmin Park <kyungmin.park@samsung.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: Re: [PATCH v3 1/2] regulator: s5m8767: Use GPIO for controlling Buck9/eMMC
Date: Fri, 24 Jan 2014 16:03:14 +0000 [thread overview]
Message-ID: <20140124160314.GB27911@lee--X1> (raw)
In-Reply-To: <1390570678-30686-2-git-send-email-k.kozlowski@samsung.com>
On Fri, 24 Jan 2014, Krzysztof Kozlowski wrote:
> Add support for GPIO control (enable/disable) over Buck9. The Buck9
> Converter is used as a supply for eMMC Host Controller.
>
> BUCK9EN GPIO of S5M8767 chip may be used by application processor to
> enable or disable the Buck9. This has two benefits:
> - It is faster than toggling it over I2C bus.
> - It allows disabling the regulator during suspend to RAM; The AP will
> enable it during resume; Without the patch the regulator supplying
> eMMC must be defined as fixed-regulator.
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> Cc: Kyungmin Park <kyungmin.park@samsung.com>
> Cc: Marek Szyprowski <m.szyprowski@samsung.com>
> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> ---
> drivers/regulator/s5m8767.c | 87 +++++++++++++++++++++++++++++++++--
> include/linux/mfd/samsung/core.h | 3 +-
> include/linux/mfd/samsung/s5m8767.h | 7 +++
> 3 files changed, 93 insertions(+), 4 deletions(-)
For the MFD changes:
Acked-by: Lee Jones <lee.jones@linaro.org>
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2014-01-24 16:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-24 13:37 [PATCH v3 0/2] regulator: s5m8767: Use GPIO for controlling Buck9/eMMC Krzysztof Kozlowski
2014-01-24 13:37 ` [PATCH v3 1/2] " Krzysztof Kozlowski
2014-01-24 16:03 ` Lee Jones [this message]
2014-01-27 20:25 ` Mark Brown
2014-02-07 12:40 ` Krzysztof Kozlowski
2014-02-07 12:52 ` Mark Brown
2014-01-24 13:37 ` [PATCH v3 2/2] regulator: s5m8767: Document new binding for Buck9 GPIO control Krzysztof Kozlowski
2014-01-27 20:25 ` Mark Brown
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