[PATCH 0/6] Add support for MAX8997 Clock Driver

[krzk@kernel.org (Krzysztof Kozlowski)]

On Mon, Nov 07, 2016 at 03:39:30PM +0530, Pankaj Dubey wrote:
> During recent test on Exynos4210 based Origen board, I observed
> RTC1 probe is failing giving following error message:
> 
> [    2.195817] s3c-rtc 10070000.rtc: failed to find rtc source clock
> [    2.200475] s3c-rtc: probe of 10070000.rtc failed with error -2
> [    2.206597] i2c /dev entries driver
> 
> This is mainly because S3C-RTC expects two clocks "rtc" and "rtc_src".
> In case of Origen board this second clock is supplied by MAX8997 clock
> oscillator.
> This patch series modified MAX8997 MFD driver for supporting regmap, and 
> adds max8997-clk driver. Also it documentation where-ever required and
> extends RTC node in exynos4210-origen.dts for supporting both clocks.
> 
> After this patch series, RTC is getting probed properly on Origen board.
> 
> This patch series is tested for SMP boot on Origen board.

No need to re-invent the wheel:
https://lkml.org/lkml/2016/6/17/57
http://lists.infradead.org/pipermail/linux-arm-kernel/2016-June/437113.html

I won't be sending updates for these patches. Feel free to continue the
work.

BR,
Krzysztof

> 
> Pankaj Dubey (6):
>   mfd: max8997: Initialize max8997 register map
>   dt-bindings: clk: max8997: Add DT binding documentation
>   clk: Add driver for Maxim-8997 PMIC clocks
>   ARM: dts: Add clock provider specific properties to max8997 node
>   mfd: max8997: Add max8997-clk name in mfd_cell
>   ARM: dts: Extend the S3C RTC node with rtc_src clock
> 
>  .../devicetree/bindings/clock/maxim,max8997.txt    | 44 +++++++++++++
>  .../bindings/regulator/max8997-regulator.txt       |  3 +
>  arch/arm/boot/dts/exynos4210-origen.dts            |  6 +-
>  arch/arm/boot/dts/exynos4210-trats.dts             |  3 +-
>  drivers/clk/Kconfig                                | 10 +++
>  drivers/clk/Makefile                               |  1 +
>  drivers/clk/clk-max8997.c                          | 76 ++++++++++++++++++++++
>  drivers/mfd/max8997.c                              | 15 +++++
>  include/dt-bindings/clock/maxim,max8997.h          | 23 +++++++
>  include/linux/mfd/max8997-private.h                |  3 +
>  10 files changed, 182 insertions(+), 2 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/clock/maxim,max8997.txt
>  create mode 100644 drivers/clk/clk-max8997.c
>  create mode 100644 include/dt-bindings/clock/maxim,max8997.h
> 
> -- 
> 2.7.4
>