linux-kernel - Re: [PATCH V2] ARM: imx_v6_v7_defconfig: select the CONFIG_CPUFREQ

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Date:   Thu, 4 Jan 2018 09:36:53 -0200
From:   Fabio Estevam <festevam@...il.com>
To:     Anson Huang <Anson.Huang@....com>
Cc:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V2] ARM: imx_v6_v7_defconfig: select the CONFIG_CPUFREQ_DT

On Thu, Jan 4, 2018 at 4:39 PM, Anson Huang <Anson.Huang@....com> wrote:

> diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
> index 29cd1ac..885db90 100644
> --- a/arch/arm/configs/imx_v6_v7_defconfig
> +++ b/arch/arm/configs/imx_v6_v7_defconfig
> @@ -58,6 +58,7 @@ CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
>  CONFIG_CPU_FREQ_GOV_POWERSAVE=y
>  CONFIG_CPU_FREQ_GOV_USERSPACE=y
>  CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
> +CONFIG_CPUFREQ_DT=y
>  CONFIG_ARM_IMX6Q_CPUFREQ=y
>  CONFIG_CPU_IDLE=y
>  CONFIG_VFP=y
> @@ -318,14 +319,6 @@ CONFIG_USB_CONFIGFS_F_MIDI=y
>  CONFIG_USB_CONFIGFS_F_HID=y
>  CONFIG_USB_CONFIGFS_F_UVC=y
>  CONFIG_USB_CONFIGFS_F_PRINTER=y
> -CONFIG_USB_ZERO=m
> -CONFIG_USB_AUDIO=m
> -CONFIG_USB_ETH=m
> -CONFIG_USB_G_NCM=m
> -CONFIG_USB_GADGETFS=m
> -CONFIG_USB_FUNCTIONFS=m
> -CONFIG_USB_MASS_STORAGE=m
> -CONFIG_USB_G_SERIAL=m

Not sure why these are getting removed automatically.

>  CONFIG_MMC=y
>  CONFIG_MMC_SDHCI=y
>  CONFIG_MMC_SDHCI_PLTFM=y
> @@ -350,7 +343,6 @@ CONFIG_RTC_DRV_PCF8563=y
>  CONFIG_RTC_DRV_M41T80=y
>  CONFIG_RTC_DRV_MC13XXX=y
>  CONFIG_RTC_DRV_MXC=y
> -CONFIG_RTC_DRV_MXC_V2=y

This is the rtc driver for mx53.

This driver will land in 4.16, so that's the reason it got removed
automatically by savedefconfig.

It would be safer if your patch could only add a single line:
'CONFIG_CPUFREQ_DT=y'.