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From: Mark Rutland <mark.rutland@arm.com>
To: Lecopzer Chen <lecopzer.chen@mediatek.com>
Cc: linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com,
	will@kernel.org, matthias.bgg@gmail.com,
	linux-mediatek@lists.infradead.org, yj.chiang@mediatek.com
Subject: Re: [PATCH] arm64: Kconfig: Add SYS_SUPPORTS_APM_EMULATION
Date: Wed, 25 Nov 2020 10:36:37 +0000	[thread overview]
Message-ID: <20201125103637.GC70906@C02TD0UTHF1T.local> (raw)
In-Reply-To: <20201124090131.27257-1-lecopzer.chen@mediatek.com>

On Tue, Nov 24, 2020 at 05:01:31PM +0800, Lecopzer Chen wrote:
> From: "Lecopzer Chen" <lecopzer.chen@mediatek.com>
> 
> Although most of modern devices use ACPI, there still has combination
> of APM + ARM64.
> 
> In order to select CONFIG_APM_EMULATION, make SYS_SUPPORTS_APM_EMULATION
> default is y if ACPI isn't configured.

I'm a bit confused why this should be enabled for !ACPI. Which DT
platforms need this, and how do they use it? Why should this only be
enabled for kernels without ACPI support, and not for kernels that
support both ACPI and DT?

Thanks,
Mark.

> 
> Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
> Suggested-by: YJ Chiang <yj.chiang@mediatek.com>
> ---
>  arch/arm64/Kconfig | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 1515f6f153a0..5e9e3694015a 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -260,6 +260,9 @@ config NO_IOPORT_MAP
>  config STACKTRACE_SUPPORT
>  	def_bool y
>  
> +config SYS_SUPPORTS_APM_EMULATION
> +	def_bool y if !ACPI
> +
>  config ILLEGAL_POINTER_VALUE
>  	hex
>  	default 0xdead000000000000
> -- 
> 2.18.0
> 

WARNING: multiple messages have this Message-ID (diff)
From: Mark Rutland <mark.rutland@arm.com>
To: Lecopzer Chen <lecopzer.chen@mediatek.com>
Cc: catalin.marinas@arm.com, yj.chiang@mediatek.com,
	linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
	matthias.bgg@gmail.com, will@kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm64: Kconfig: Add SYS_SUPPORTS_APM_EMULATION
Date: Wed, 25 Nov 2020 10:36:37 +0000	[thread overview]
Message-ID: <20201125103637.GC70906@C02TD0UTHF1T.local> (raw)
In-Reply-To: <20201124090131.27257-1-lecopzer.chen@mediatek.com>

On Tue, Nov 24, 2020 at 05:01:31PM +0800, Lecopzer Chen wrote:
> From: "Lecopzer Chen" <lecopzer.chen@mediatek.com>
> 
> Although most of modern devices use ACPI, there still has combination
> of APM + ARM64.
> 
> In order to select CONFIG_APM_EMULATION, make SYS_SUPPORTS_APM_EMULATION
> default is y if ACPI isn't configured.

I'm a bit confused why this should be enabled for !ACPI. Which DT
platforms need this, and how do they use it? Why should this only be
enabled for kernels without ACPI support, and not for kernels that
support both ACPI and DT?

Thanks,
Mark.

> 
> Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
> Suggested-by: YJ Chiang <yj.chiang@mediatek.com>
> ---
>  arch/arm64/Kconfig | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 1515f6f153a0..5e9e3694015a 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -260,6 +260,9 @@ config NO_IOPORT_MAP
>  config STACKTRACE_SUPPORT
>  	def_bool y
>  
> +config SYS_SUPPORTS_APM_EMULATION
> +	def_bool y if !ACPI
> +
>  config ILLEGAL_POINTER_VALUE
>  	hex
>  	default 0xdead000000000000
> -- 
> 2.18.0
> 

_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

WARNING: multiple messages have this Message-ID (diff)
From: Mark Rutland <mark.rutland@arm.com>
To: Lecopzer Chen <lecopzer.chen@mediatek.com>
Cc: catalin.marinas@arm.com, yj.chiang@mediatek.com,
	linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
	matthias.bgg@gmail.com, will@kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm64: Kconfig: Add SYS_SUPPORTS_APM_EMULATION
Date: Wed, 25 Nov 2020 10:36:37 +0000	[thread overview]
Message-ID: <20201125103637.GC70906@C02TD0UTHF1T.local> (raw)
In-Reply-To: <20201124090131.27257-1-lecopzer.chen@mediatek.com>

On Tue, Nov 24, 2020 at 05:01:31PM +0800, Lecopzer Chen wrote:
> From: "Lecopzer Chen" <lecopzer.chen@mediatek.com>
> 
> Although most of modern devices use ACPI, there still has combination
> of APM + ARM64.
> 
> In order to select CONFIG_APM_EMULATION, make SYS_SUPPORTS_APM_EMULATION
> default is y if ACPI isn't configured.

I'm a bit confused why this should be enabled for !ACPI. Which DT
platforms need this, and how do they use it? Why should this only be
enabled for kernels without ACPI support, and not for kernels that
support both ACPI and DT?

Thanks,
Mark.

> 
> Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
> Suggested-by: YJ Chiang <yj.chiang@mediatek.com>
> ---
>  arch/arm64/Kconfig | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 1515f6f153a0..5e9e3694015a 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -260,6 +260,9 @@ config NO_IOPORT_MAP
>  config STACKTRACE_SUPPORT
>  	def_bool y
>  
> +config SYS_SUPPORTS_APM_EMULATION
> +	def_bool y if !ACPI
> +
>  config ILLEGAL_POINTER_VALUE
>  	hex
>  	default 0xdead000000000000
> -- 
> 2.18.0
> 

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2020-11-25 10:36 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-24  9:01 [PATCH] arm64: Kconfig: Add SYS_SUPPORTS_APM_EMULATION Lecopzer Chen
2020-11-24  9:01 ` Lecopzer Chen
2020-11-24  9:01 ` Lecopzer Chen
2020-11-25 10:36 ` Mark Rutland [this message]
2020-11-25 10:36   ` Mark Rutland
2020-11-25 10:36   ` Mark Rutland
2020-11-25 11:41   ` Lecopzer Chen
2020-11-25 11:41     ` Lecopzer Chen
2020-11-25 11:41     ` Lecopzer Chen
2020-12-16 15:58     ` Catalin Marinas
2020-12-16 15:58       ` Catalin Marinas
2020-12-16 15:58       ` Catalin Marinas
2020-12-16 16:41       ` Lecopzer Chen
2020-12-16 16:41         ` Lecopzer Chen
2020-12-16 16:41         ` Lecopzer Chen
2020-12-17 16:49         ` Catalin Marinas
2020-12-17 16:49           ` Catalin Marinas
2020-12-17 16:49           ` Catalin Marinas
2020-12-18  5:02           ` Lecopzer Chen
2020-12-18  5:02             ` Lecopzer Chen
2020-12-18  5:02             ` Lecopzer Chen
2020-12-14  9:28   ` Lecopzer Chen
2020-12-14  9:28     ` Lecopzer Chen
2020-12-14  9:28     ` Lecopzer Chen

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