linux-kernel - RE: [PATCH 3/3] ARM: imx: Select RESET

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Message-ID: <DB3PR0402MB3916E7A184549BF302C7401FF56E0@DB3PR0402MB3916.eurprd04.prod.outlook.com>
Date:   Mon, 29 Jun 2020 11:36:56 +0000
From:   Anson Huang <anson.huang@....com>
To:     Arnd Bergmann <arnd@...db.de>
CC:     Russell King - ARM Linux <linux@...linux.org.uk>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Stefan Agner <stefan.agner@...adex.com>,
        "oleksandr.suvorov@...adex.com" <oleksandr.suvorov@...adex.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Leo Li <leoyang.li@....com>, Vinod Koul <vkoul@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Olof Johansson <olof@...om.net>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH 3/3] ARM: imx: Select RESET_IMX7 for i.MX7D

Hi, Arnd


> Subject: Re: [PATCH 3/3] ARM: imx: Select RESET_IMX7 for i.MX7D
> 
> On Mon, Jun 29, 2020 at 12:25 PM Anson Huang <Anson.Huang@....com>
> wrote:
> >
> > i.MX7 reset driver now supports module build, it is no longer built in
> > by default, need to select it explicitly for i.MX7D.
> >
> > Signed-off-by: Anson Huang <Anson.Huang@....com>
> > ---
> >  arch/arm/mach-imx/Kconfig | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> > index e7d7b90..3540483 100644
> > --- a/arch/arm/mach-imx/Kconfig
> > +++ b/arch/arm/mach-imx/Kconfig
> > @@ -561,6 +561,7 @@ config SOC_IMX7D_CM4  config SOC_IMX7D
> >         bool "i.MX7 Dual support"
> >         select PINCTRL_IMX7D
> > +       select RESET_IMX7
> 
> Please drop this patch, it breaks the intent of the first one by forcing the driver
> to be built-in again rather than a loadable module.
> 

One thing to clarify is, the loadable module support is ONLY for i.MX ARMv8 SoCs,
ARMv7 SoCs is NOT in the plan, that is why I add this patch to make it same as previously
when this reset driver is =y by default. Without this patch, this reset driver will NOT be
enabled by default for i.MX ARMv7 SoCs, function will be broken.

Thanks,
Anson