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From: pawel.moll@arm.com (Pawel Moll)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 06/11] ARM: vexpress: use clocksource_of_init for sp804
Date: Wed, 13 Mar 2013 11:10:37 +0000
Message-ID: <1363173037.3100.22.camel@hornet> (raw)
In-Reply-To: <1363151142-32162-7-git-send-email-haojian.zhuang@linaro.org>

On Wed, 2013-03-13 at 05:05 +0000, Haojian Zhuang wrote:
> Remove all code to parse sp804. Use clocksource_of_init() instead since
> all these code are implemented in sp804 driver already.
> 
> Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
> ---
>  arch/arm/boot/dts/vexpress-v2m-rs1.dtsi |    2 ++
>  arch/arm/boot/dts/vexpress-v2m.dtsi     |    2 ++
>  arch/arm/boot/dts/vexpress-v2p-ca9.dts  |    2 ++
>  arch/arm/mach-vexpress/Kconfig          |    1 +
>  arch/arm/mach-vexpress/v2m.c            |   13 ++-----------
>  5 files changed, 9 insertions(+), 11 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
> index ac870fb..3fa798f 100644
> --- a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
> +++ b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
> @@ -183,6 +183,8 @@
>  				interrupts = <2>;
>  				clocks = <&v2m_sysctl 0>, <&v2m_sysctl 1>, <&smbclk>;
>  				clock-names = "timclken1", "timclken2", "apb_pclk";
> +				arm,sp804-clocksource = <0x20>;
> +				arm,sp804-clockevent = <0>;
>  			};
>  
>  			v2m_timer23: timer at 120000 {
> diff --git a/arch/arm/boot/dts/vexpress-v2m.dtsi b/arch/arm/boot/dts/vexpress-v2m.dtsi
> index f142036..86e4046 100644
> --- a/arch/arm/boot/dts/vexpress-v2m.dtsi
> +++ b/arch/arm/boot/dts/vexpress-v2m.dtsi
> @@ -182,6 +182,8 @@
>  				interrupts = <2>;
>  				clocks = <&v2m_sysctl 0>, <&v2m_sysctl 1>, <&smbclk>;
>  				clock-names = "timclken1", "timclken2", "apb_pclk";
> +				arm,sp804-clocksource = <0x20>;
> +				arm,sp804-clockevent = <0>;
>  			};
>  
>  			v2m_timer23: timer at 12000 {
> diff --git a/arch/arm/boot/dts/vexpress-v2p-ca9.dts b/arch/arm/boot/dts/vexpress-v2p-ca9.dts
> index 1420bb1..a2eba95 100644
> --- a/arch/arm/boot/dts/vexpress-v2p-ca9.dts
> +++ b/arch/arm/boot/dts/vexpress-v2p-ca9.dts
> @@ -98,6 +98,8 @@
>  			     <0 49 4>;
>  		clocks = <&oscclk2>, <&oscclk2>;
>  		clock-names = "timclk", "apb_pclk";
> +		arm,sp804-clocksource = <0x20>;
> +		arm,sp804-clockevent = <0>;
>  	};
>  
>  	watchdog at 100e5000 {

I love the possibility of removing the SP804 code from the VE machine
(thanks for your work!), but I'd like to avoid it being replaced by
cryptic properties in the tree.

Now, to get this right: I'm not saying that there should be completly no
OS-specific (but neutral) properties for the clocking system.

I'm saying that in "my" (the VE) case, there are four, effectively
identical timers (each pair sharing an interrupt though). Every single
one of them is perfectly capable of serving as clocksource or
clockevent. Therefore I believe the driver/framework/OS should make its
own decision.

Cheers!

Pawe?

  reply index

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-13  5:05 [PATCH v3 00/11] add hisilicon SoC support Haojian Zhuang
2013-03-13  5:05 ` [PATCH v3 01/11] clocksource: move sp timer driver Haojian Zhuang
2013-03-13  5:05 ` [PATCH v3 02/11] clocksource: select USE_OF by default Haojian Zhuang
2013-03-13  5:05 ` [PATCH v3 03/11] clocksource: sp804: add device tree support Haojian Zhuang
2013-03-13 11:05   ` Pawel Moll
2013-03-13 11:37     ` Haojian Zhuang
2013-03-13 11:41       ` Pawel Moll
2013-03-13 14:17     ` Rob Herring
2013-03-13 14:42       ` Pawel Moll
2013-03-13 14:51         ` Rob Herring
2013-03-13 14:55           ` Pawel Moll
2013-03-13 15:11             ` Haojian Zhuang
2013-03-13 15:23               ` Pawel Moll
2013-03-13 15:25                 ` Haojian Zhuang
2013-03-13 15:29                   ` Pawel Moll
2013-03-13 15:39                     ` Rob Herring
2013-03-13 15:41                       ` Pawel Moll
2013-03-13 15:44                         ` Haojian Zhuang
2013-03-13 15:42                     ` Haojian Zhuang
2013-03-13 15:49                       ` Pawel Moll
2013-03-13 16:35                         ` Arnd Bergmann
2013-03-13 16:41                           ` Pawel Moll
2013-03-15 12:20       ` Russell King - ARM Linux
2013-03-13  5:05 ` [PATCH v3 04/11] ARM: integrator: use clocksource_of_init for sp804 Haojian Zhuang
2013-03-13  5:05 ` [PATCH v3 05/11] ARM: highbank: " Haojian Zhuang
2013-03-13  5:05 ` [PATCH v3 06/11] ARM: vexpress: " Haojian Zhuang
2013-03-13 11:10   ` Pawel Moll [this message]
2013-03-13 11:42     ` Haojian Zhuang
2013-03-13 11:46       ` Pawel Moll
2013-03-13 12:21         ` Haojian Zhuang
2013-03-13 14:48           ` Pawel Moll
2013-03-13 15:01             ` Haojian Zhuang
2013-03-13 15:19               ` Pawel Moll
2013-03-13 15:59                 ` Haojian Zhuang
2013-03-13 16:28                   ` Pawel Moll
2013-03-13 16:32                   ` Rob Herring
2013-03-15 12:34                     ` Russell King - ARM Linux
2013-03-15 12:58                       ` Pawel Moll
2013-03-15 18:10                         ` Russell King - ARM Linux
2013-03-13  5:05 ` [PATCH v3 07/11] ARM: debug: support debug ll on hisilicon soc Haojian Zhuang
2013-03-13  5:05 ` [PATCH v3 08/11] clk: hi3xxx: add clock support Haojian Zhuang
2013-03-13  5:05 ` [PATCH v3 09/11] ARM: hi3xxx: add board support with device tree Haojian Zhuang
2013-03-13  5:05 ` [PATCH v3 10/11] ARM: hi3xxx: enable hi4511 " Haojian Zhuang
2013-03-13  5:05 ` [PATCH v3 11/11] ARM: config: append arch hi3xxx into multi defconfig Haojian Zhuang

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