linux-kernel - Re: [PATCH] ARM: multi_v7_defconfig: Add SCMI reset support

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Date:   Tue, 21 Nov 2023 15:05:52 +0000
From:   Etienne CARRIERE - foss <etienne.carriere@...s.st.com>
To:     Alexandre TORGUE - foss <alexandre.torgue@...s.st.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        "Kevin Hilman" <khilman@...libre.com>,
        "soc@...nel.org" <soc@...nel.org>,
        "arm@...nel.org" <arm@...nel.org>
Subject: Re: [PATCH] ARM: multi_v7_defconfig: Add SCMI reset support

Hi Alexandre,

> From: Alexandre TORGUE - foss
> Sent: Tuesday, November 21, 2023 10:19 AM
> 
> Hi Etienne
> 
> On 11/3/23 09:54, Etienne Carriere wrote:
> > SCMI reset controllers are used in the ARMv7 STMicroelectronics stm32mp
> > boards:
> > - for STM32MP13: stm32mp135f-dk
> > - for STM32MP15 boards with SCMI variant, introduced by commit 5b7e58313a77
> >    ("ARM: dts: stm32: Add SCMI version of STM32 boards (DK1/DK2/ED1/EV1)")
> >    * stm32mp157c-ev1-scmi
> >    * stm32mp157c-ed1-scmi
> >    * stm32mp157c-dk2-scmi
> >    * stm32mp157a-dk1-scmi
> >
> > Cc: Arnd Bergmann <arnd@...db.de>
> > Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>
> > Signed-off-by: Etienne Carriere <etienne.carriere@...s.st.com>
> > ---
> >   arch/arm/configs/multi_v7_defconfig | 1 +
> >   1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
> > index 23fc49f23d25..01b3797f9317 100644
> > --- a/arch/arm/configs/multi_v7_defconfig
> > +++ b/arch/arm/configs/multi_v7_defconfig
> > @@ -1189,6 +1189,7 @@ CONFIG_PWM_TEGRA=y
> >   CONFIG_PWM_VT8500=y
> >   CONFIG_KEYSTONE_IRQ=y
> >   CONFIG_RESET_MCHP_SPARX5=y
> > +CONFIG_RESET_SCMI=y
> >   CONFIG_PHY_SUN4I_USB=y
> >   CONFIG_PHY_SUN9I_USB=y
> >   CONFIG_PHY_BRCM_USB=m
> 
> Just one question before to apply this patch. CONFIG_RESET_SCMI is set
> by the following dependency in drivers/reset/Kconfig:
> 
> RESET_CONTROLLER [=y] && (ARM_SCMI_PROTOCOL [=y] || COMPILE_TEST [=n])
> 
> CONFIG_ARM_SCMI is already set in multi_v7_defconfig.
> CONFIG_RESET_CONTROLLER seems to be set in each platform Kconfig.
> 
> So not sure we need to force CONFIG_RESET_SCMI in the multi_v7_defconfig.

My bad. Thanks for noticing that to me. Indeed the default directive in
drivers/reset/Kconfig together with arm/multi_v7_defconfig makes CONFIG_RESET_SCMI
be enabled.

Sorry for the noise, you can discard my patch request.

Best regards,
Etienne


> 
> Regards
> Alex
>