[PATCH 4/4] soc: mediatek: Add MT2701/MT7623 scpsys driver

James Liao
2016-01-05T05:23:59Z

Hi Matthias,
On Wed, 2015-12-30 at 18:49 +0100, Matthias Brugger wrote:
> > On Wed, 2015-12-30 at 17:01 +0800, Daniel Kurtz wrote:
> >> On Wed, Dec 30, 2015 at 2:41 PM, James Liao <jamesjj.liao@mediatek.com> wrote:
> >>>
> >>> From: Shunli Wang <shunli.wang@mediatek.com>
> >>>
> >>> Add scpsys driver for MT2701 and MT7623.
> >>>
> >>> Signed-off-by: Shunli Wang <shunli.wang@mediatek.com>
> >>> Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
> >>> ---
> >>> drivers/soc/mediatek/Kconfig | 11 +++
> >>> drivers/soc/mediatek/Makefile | 1 +
> >>> drivers/soc/mediatek/mtk-scpsys-mt2701.c | 161 +++++++++++++++++++++++++++++++
> >>> 3 files changed, 173 insertions(+)
> >>> create mode 100644 drivers/soc/mediatek/mtk-scpsys-mt2701.c
> >>>
> >>> diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig
> >>> index eca6fb7..92cf838 100644
> >>> --- a/drivers/soc/mediatek/Kconfig
> >>> +++ b/drivers/soc/mediatek/Kconfig
> >>> @@ -39,3 +39,14 @@ config MTK_SCPSYS_MT8173
> >>> driver.
> >>> The System Control Processor System (SCPSYS) has several power
> >>> management related tasks in the system.
> >>> +
> >>> +config MTK_SCPSYS_MT2701
> >>> + bool "SCPSYS Support MediaTek MT2701 and MT7623"
> >>> + depends on ARCH_MEDIATEK || COMPILE_TEST
> >>> + select MTK_SCPSYS
> >>> + default ARCH_MEDIATEK
> >>> + help
> >>> + Say yes here to add support for the MT2701/MT7623 SCPSYS power
> >>> + domain driver.
> >>> + The System Control Processor System (SCPSYS) has several power
> >>> + management related tasks in the system.
> >>
> >> I don't think we really want different drivers and Kconfig options.
> >>
> >> Can we just use different compatibles to select the appropriate scp_domain_data?
> >
> > Yes, we can. All scpsys drivers are built-in by default, and they will
> > be activate by specific compatible string.
> >
> > But some projects don't want to build unused drivers into kernel to save
> > code size. Use different Kconfig options for each SoC so that these
> > projects can disable unused drivers.
> >
>
> Scpsys is a bool right now, you can disable it if you don't need it for
> your project.
>
> I don't think the impact of adding scp_domain_data justifies adding SoC
> specific scpsys drivers and bloat the drivers/soc/mediatek folder.

So you prefer to enable MT8173 and MT2701 scpsys drivers at the same
time if MTK_SCPSYS is true?

BTW, this patchset is based on 4.4-rc7, which lacks two patches from
your v4.4-next/soc. Should I rebase to v4.4-next/soc when I send v2
patch?

Best regards,

James