linux-kernel - Re: [PATCH v2 1/5] mfd/rtc: s5m: Fix register updating by adding regmap for RTC

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Date:	Fri, 29 Nov 2013 09:04:29 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	Sangbeom Kim <sbkim73@...sung.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	linux-kernel@...r.kernel.org, rtc-linux@...glegroups.com,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: Re: [PATCH v2 1/5] mfd/rtc: s5m: Fix register updating by adding
 regmap for RTC

On Thu, 28 Nov 2013, Krzysztof Kozlowski wrote:

> Rename old regmap field of "struct sec_pmic_dev" to "regmap_pmic" and
> add new regmap for RTC.
> 
> On S5M8767A registers were not properly updated and read due to usage of
> the same regmap as the PMIC. This could be observed in various hangs,
> e.g. in infinite loop during waiting for UDR field change.
> 
> On this chip family the RTC has different I2C address than PMIC so
> additional regmap is needed.
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
> ---
>  drivers/mfd/sec-core.c           |   30 ++++++++++++++++++++++--------
>  drivers/mfd/sec-irq.c            |    6 +++---
>  drivers/regulator/s5m8767.c      |    2 +-
>  drivers/rtc/rtc-s5m.c            |    2 +-
>  include/linux/mfd/samsung/core.h |    3 ++-
>  5 files changed, 29 insertions(+), 14 deletions(-)

The MFD parts look fine to me. I just need the Acks from the other
maintainers before I can apply it:

Acked-by: Lee Jones <lee.jones@...nro.org>

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