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SubjectRe: [PATCH v3 1/2] regulator: s5m8767: Use GPIO for controlling Buck9/eMMC
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>

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Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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