From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Jones Subject: Re: [PATCH v3 1/2] regulator: s5m8767: Use GPIO for controlling Buck9/eMMC Date: Fri, 24 Jan 2014 16:03:14 +0000 Message-ID: <20140124160314.GB27911@lee--X1> References: <1390570678-30686-1-git-send-email-k.kozlowski@samsung.com> <1390570678-30686-2-git-send-email-k.kozlowski@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: <1390570678-30686-2-git-send-email-k.kozlowski@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org To: Krzysztof Kozlowski Cc: Sangbeom Kim , Liam Girdwood , Mark Brown , Samuel Ortiz , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Sachin Kamat , Kyungmin Park , Marek Szyprowski , Bartlomiej Zolnierkiewicz List-Id: devicetree@vger.kernel.org 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. >=20 > 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 wi= ll > enable it during resume; Without the patch the regulator supplying > eMMC must be defined as fixed-regulator. >=20 > Signed-off-by: Krzysztof Kozlowski > Cc: Kyungmin Park > Cc: Marek Szyprowski > Cc: Bartlomiej Zolnierkiewicz > --- > 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(-) =46or the MFD changes: Acked-by: Lee Jones --=20 Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org =E2=94=82 Open source software for ARM SoCs =46ollow Linaro: Facebook | Twitter | Blog