Re: [PATCH v2 0/4] sh73a0: Expose the PFC-controller SDHI power gate as a regulator

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Simon,

Could you please apply those patches ? For your convenience I've added Mark's 
ack to 2/4 and pushed the result to

	git://linuxtv.org/pinchartl/fbdev.git pinmux/3.9/sh73a0

On Thursday 25 April 2013 00:00:24 Laurent Pinchart wrote:
> Hello,
> 
> The sh73a0 has an internal power gate on the VCCQ power supply for the SDHI0
> device that is controlled (for some strange reason) by a bit in a PFC
> register.
> 
> This patch set exposes the power gate as a regulator. As the only currently
> supported board (kzm9g) has the VCCQ_MC0 pins directly connected to an
> always on 3.3V supply, the code assumes that the external VCCQ power supply
> can't be controlled. This could be fixed later by setting the regulator
> supply name.
> 
> As this series turns the power off when not needed it might bring additional
> power saving, but this hasn't been measured. If the patches are considered
> too complex a simpler approach would be to turn the power gate on when the
> SDHI function is selected.
> 
> The patches are based on tags/renesas-next-20130422. They have been tested
> on kzm9g. They are available in my git tree at
> 
> 	git://linuxtv.org/pinchartl/fbdev.git pinmux/3.9/sh73a0
> 
> Changes compared to v1:
> 
> - Renamed __sh73a0_vccq_mc0_enable to sh73a0_vccq_mc0_endisable
> - Fix the reported voltage value (3.3V instead of 1.8V)
> - Make patch 2/4 commit message more explicit
> 
> Laurent Pinchart (4):
>   sh-pfc: Add support for SoC-specific initialization
>   sh-pfc: sh73a0: Add VCCQ MC0 regulator
>   ARM: shmobile: kzm9g: Remove the VCCQ MC0 function GPIO
>   ARM: shmobile: kzm9g-reference: Remove the VCCQ MC0 function GPIO
> 
>  arch/arm/mach-shmobile/board-kzm9g-reference.c |   1 -
>  arch/arm/mach-shmobile/board-kzm9g.c           |   3 -
>  drivers/pinctrl/sh-pfc/Kconfig                 |   1 +
>  drivers/pinctrl/sh-pfc/core.c                  |  16 ++-
>  drivers/pinctrl/sh-pfc/core.h                  |   1 +
>  drivers/pinctrl/sh-pfc/pfc-sh73a0.c            | 134 ++++++++++++++++++++++
>  drivers/pinctrl/sh-pfc/sh_pfc.h                |   2 +
>  7 files changed, 153 insertions(+), 5 deletions(-)
-- 
Regards,

Laurent Pinchart