Re: [PATCH 2/3] soc: samsung: Do not build ARMv7 PMU drivers on ARMv8

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Saturday, March 11, 2017 11:38:55 PM Krzysztof Kozlowski wrote:
> The Exynos Power Management Unit (PMU) drivers contain quite large
> static arrays of register values necessary for given Exynos SoC to enter
> low power mode.  All this data is useless for ARMv8 SoC like
> Exynos5433, because the image will not be shared between ARMv7 and
> ARMv8.
> 
> Add additional Kconfig symbol for selecting the SoC-specific driver
> addons thus skipping the useless data in the final image (this is
> similar approach to chosen for Exynos clock controller drivers):
>  - exynos-pmu driver will be compiled on both architectures ARMv7
>    and ARMv8,
>  - additional driver_data for ARMv7 SoCs will not be built on ARMv8
>    and a macro will return NULL for them in of_device_id - this should
>    be safe as these compatibles cannot match on ARMv7 and driver
>    anyway handles NULL driver_data,
>  - on ARMv8 compile only exynos-pmu driver which exposes the
>    syscon-regmap for PMU address space.
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>

Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux SoC Development]     [Linux Rockchip Development]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Linux SCSI]     [Yosemite News]

  Powered by Linux