linux-kernel - Re: [PATCH] ARM: tegra: enforce PM requirement

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Message-ID: <d78324ad-25de-a125-a1bd-6088f069ef58@nvidia.com>
Date:   Mon, 11 Feb 2019 19:29:37 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     <linux@...linux.org.uk>, <jhogan@...nel.org>
CC:     <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: tegra: enforce PM requirement


On 2/5/2019 4:46 PM, Sameer Pujar wrote:
> Drivers need to handle !PM case with work arounds for managing clocks
> and power explicitly, which is not really necessary when PM support on
> tegra is in good shape. In fact ARM 64-bit tegra platforms enforce PM
> support and there is no reason why this cannot be done for 32-bit.
>
> This patch selects PM unconditionally and drivers can rely on runtime
> PM framework for clock and power management.
>
> Signed-off-by: Sameer Pujar <spujar@...dia.com>
> Reviewed-by: Thierry Reding <treding@...dia.com>
> Reviewed-by: Jonathan Hunter <jonathanh@...dia.com>
> ---
>   arch/arm/mach-tegra/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
> index 7f3b83e..51a8fa3 100644
> --- a/arch/arm/mach-tegra/Kconfig
> +++ b/arch/arm/mach-tegra/Kconfig
> @@ -10,6 +10,7 @@ menuconfig ARCH_TEGRA
>   	select HAVE_ARM_SCU if SMP
>   	select HAVE_ARM_TWD if SMP
>   	select PINCTRL
> +	select PM
>   	select PM_OPP
>   	select ARCH_HAS_RESET_CONTROLLER
>   	select RESET_CONTROLLER

Request for review comments or approval.

Thanks,
Sameer.