linux-kernel - Re: [PATCH v2 7/7] arm64: defconfig: enable cpufreq support for RPi3

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Message-ID: <431a1f0c-8bc8-5c9b-7fa2-f293a2846ce3@i2se.com>
Date:   Fri, 7 Jun 2019 12:19:36 +0200
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        linux-kernel@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, f.fainelli@...il.com,
        Catalin Marinas <catalin.marinas@....com>, ptesarik@...e.com,
        sboyd@...nel.org, viresh.kumar@...aro.org, mturquette@...libre.com,
        linux-pm@...r.kernel.org, rjw@...ysocki.net,
        Will Deacon <will.deacon@....com>, eric@...olt.net,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        mbrugger@...e.de, ssuloev@...altech.com
Subject: Re: [PATCH v2 7/7] arm64: defconfig: enable cpufreq support for RPi3

Hi Nicolas,

Am 06.06.19 um 16:23 schrieb Nicolas Saenz Julienne:
> This enables both the new firmware clock driver and cpufreq driver
> available for the RPi3 family of boards.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
> ---
>  arch/arm64/configs/defconfig | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> index 4d583514258c..3b7baffb3087 100644
> --- a/arch/arm64/configs/defconfig
> +++ b/arch/arm64/configs/defconfig
> @@ -82,6 +82,7 @@ CONFIG_CPUFREQ_DT=y
>  CONFIG_ACPI_CPPC_CPUFREQ=m
>  CONFIG_ARM_ARMADA_37XX_CPUFREQ=y
>  CONFIG_ARM_SCPI_CPUFREQ=y
> +CONFIG_ARM_RASPBERRYPI_CPUFREQ=y

the arm64 kernel tends to get very big, so i suggested to build it as a
kernel module.

Any reason why you choose to make it builtin?

>  CONFIG_ARM_TEGRA186_CPUFREQ=y
>  CONFIG_ARM_SCPI_PROTOCOL=y
>  CONFIG_RASPBERRYPI_FIRMWARE=y
> @@ -639,6 +640,7 @@ CONFIG_COMMON_CLK_CS2000_CP=y
>  CONFIG_COMMON_CLK_S2MPS11=y
>  CONFIG_CLK_QORIQ=y
>  CONFIG_COMMON_CLK_PWM=y
> +CONFIG_CLK_RASPBERRYPI=y
>  CONFIG_CLK_IMX8MQ=y
>  CONFIG_CLK_IMX8QXP=y
>  CONFIG_TI_SCI_CLK=y