* [PATCH 0/2] Add generic Cortex-A9 timer for Armada 38x @ 2017-08-01 16:36 ` Marcin Wojtas 0 siblings, 0 replies; 10+ messages in thread From: Marcin Wojtas @ 2017-08-01 16:36 UTC (permalink / raw) To: linux-arm-kernel Hi, This small patchset adds usage of generic Cortex-A9 timer driver by Armada 38x SoCs. The system clocksource subsystem will pick one of above two available ones (ARM generic or legacy axp/a370 timer). Test on v4.13-rc3 showed, that the generic one is chosen - no regression whatsoever observed on A388-GP and A388-Clearfog. Backward compatibility with older kernels/DT is preserved. I'm looking forward to any comments or remarks. Best regards, Marcin Marcin Wojtas (2): ARM: mvebu: enable ARM_GLOBAL_TIMER compilation Armada 38x platforms ARM: dts: armada-38x: Add arm_global_timer node arch/arm/boot/dts/armada-38x.dtsi | 7 +++++++ arch/arm/mach-mvebu/Kconfig | 2 ++ 2 files changed, 9 insertions(+) -- 1.8.3.1 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH 0/2] Add generic Cortex-A9 timer for Armada 38x @ 2017-08-01 16:36 ` Marcin Wojtas 0 siblings, 0 replies; 10+ messages in thread From: Marcin Wojtas @ 2017-08-01 16:36 UTC (permalink / raw) To: linux-kernel, linux-arm-kernel Cc: sebastian.hesselbarth, andrew, linux, jason, thomas.petazzoni, gregory.clement, will.deacon, robh+dt, mark.rutland, jaz, cognet, Marcin Wojtas Hi, This small patchset adds usage of generic Cortex-A9 timer driver by Armada 38x SoCs. The system clocksource subsystem will pick one of above two available ones (ARM generic or legacy axp/a370 timer). Test on v4.13-rc3 showed, that the generic one is chosen - no regression whatsoever observed on A388-GP and A388-Clearfog. Backward compatibility with older kernels/DT is preserved. I'm looking forward to any comments or remarks. Best regards, Marcin Marcin Wojtas (2): ARM: mvebu: enable ARM_GLOBAL_TIMER compilation Armada 38x platforms ARM: dts: armada-38x: Add arm_global_timer node arch/arm/boot/dts/armada-38x.dtsi | 7 +++++++ arch/arm/mach-mvebu/Kconfig | 2 ++ 2 files changed, 9 insertions(+) -- 1.8.3.1 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH 1/2] ARM: mvebu: enable ARM_GLOBAL_TIMER compilation Armada 38x platforms 2017-08-01 16:36 ` Marcin Wojtas @ 2017-08-01 16:36 ` Marcin Wojtas -1 siblings, 0 replies; 10+ messages in thread From: Marcin Wojtas @ 2017-08-01 16:36 UTC (permalink / raw) To: linux-arm-kernel Armada 38x SoCs along with legacy timer (time-armada-370-xp.c), comprise generic Cortex-A9 global timer (arm_global_timer.c). Enable its compilation. The system clocksource subsystem will pick one of above two available ones in case the global timer node is present in the device tree. Signed-off-by: Marcin Wojtas <mw@semihalf.com> --- arch/arm/mach-mvebu/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig index 541647f..9b49867 100644 --- a/arch/arm/mach-mvebu/Kconfig +++ b/arch/arm/mach-mvebu/Kconfig @@ -60,6 +60,8 @@ config MACH_ARMADA_38X select ARM_ERRATA_720789 select ARM_ERRATA_753970 select ARM_GIC + select ARM_GLOBAL_TIMER + select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK select ARMADA_370_XP_IRQ select ARMADA_38X_CLK select HAVE_ARM_SCU -- 1.8.3.1 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH 1/2] ARM: mvebu: enable ARM_GLOBAL_TIMER compilation Armada 38x platforms @ 2017-08-01 16:36 ` Marcin Wojtas 0 siblings, 0 replies; 10+ messages in thread From: Marcin Wojtas @ 2017-08-01 16:36 UTC (permalink / raw) To: linux-kernel, linux-arm-kernel Cc: sebastian.hesselbarth, andrew, linux, jason, thomas.petazzoni, gregory.clement, will.deacon, robh+dt, mark.rutland, jaz, cognet, Marcin Wojtas Armada 38x SoCs along with legacy timer (time-armada-370-xp.c), comprise generic Cortex-A9 global timer (arm_global_timer.c). Enable its compilation. The system clocksource subsystem will pick one of above two available ones in case the global timer node is present in the device tree. Signed-off-by: Marcin Wojtas <mw@semihalf.com> --- arch/arm/mach-mvebu/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig index 541647f..9b49867 100644 --- a/arch/arm/mach-mvebu/Kconfig +++ b/arch/arm/mach-mvebu/Kconfig @@ -60,6 +60,8 @@ config MACH_ARMADA_38X select ARM_ERRATA_720789 select ARM_ERRATA_753970 select ARM_GIC + select ARM_GLOBAL_TIMER + select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK select ARMADA_370_XP_IRQ select ARMADA_38X_CLK select HAVE_ARM_SCU -- 1.8.3.1 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH 1/2] ARM: mvebu: enable ARM_GLOBAL_TIMER compilation Armada 38x platforms 2017-08-01 16:36 ` Marcin Wojtas @ 2017-08-03 13:17 ` Gregory CLEMENT -1 siblings, 0 replies; 10+ messages in thread From: Gregory CLEMENT @ 2017-08-03 13:17 UTC (permalink / raw) To: linux-arm-kernel Hi Marcin, On mar., ao?t 01 2017, Marcin Wojtas <mw@semihalf.com> wrote: > Armada 38x SoCs along with legacy timer (time-armada-370-xp.c), > comprise generic Cortex-A9 global timer (arm_global_timer.c). > Enable its compilation. The system clocksource subsystem > will pick one of above two available ones in case the global > timer node is present in the device tree. > > Signed-off-by: Marcin Wojtas <mw@semihalf.com> Applied on mvebu/soc Thanks, Gregory > --- > arch/arm/mach-mvebu/Kconfig | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig > index 541647f..9b49867 100644 > --- a/arch/arm/mach-mvebu/Kconfig > +++ b/arch/arm/mach-mvebu/Kconfig > @@ -60,6 +60,8 @@ config MACH_ARMADA_38X > select ARM_ERRATA_720789 > select ARM_ERRATA_753970 > select ARM_GIC > + select ARM_GLOBAL_TIMER > + select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK > select ARMADA_370_XP_IRQ > select ARMADA_38X_CLK > select HAVE_ARM_SCU > -- > 1.8.3.1 > -- Gregory Clement, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 1/2] ARM: mvebu: enable ARM_GLOBAL_TIMER compilation Armada 38x platforms @ 2017-08-03 13:17 ` Gregory CLEMENT 0 siblings, 0 replies; 10+ messages in thread From: Gregory CLEMENT @ 2017-08-03 13:17 UTC (permalink / raw) To: Marcin Wojtas Cc: linux-kernel, linux-arm-kernel, sebastian.hesselbarth, andrew, linux, jason, thomas.petazzoni, will.deacon, robh+dt, mark.rutland, jaz, cognet Hi Marcin, On mar., août 01 2017, Marcin Wojtas <mw@semihalf.com> wrote: > Armada 38x SoCs along with legacy timer (time-armada-370-xp.c), > comprise generic Cortex-A9 global timer (arm_global_timer.c). > Enable its compilation. The system clocksource subsystem > will pick one of above two available ones in case the global > timer node is present in the device tree. > > Signed-off-by: Marcin Wojtas <mw@semihalf.com> Applied on mvebu/soc Thanks, Gregory > --- > arch/arm/mach-mvebu/Kconfig | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig > index 541647f..9b49867 100644 > --- a/arch/arm/mach-mvebu/Kconfig > +++ b/arch/arm/mach-mvebu/Kconfig > @@ -60,6 +60,8 @@ config MACH_ARMADA_38X > select ARM_ERRATA_720789 > select ARM_ERRATA_753970 > select ARM_GIC > + select ARM_GLOBAL_TIMER > + select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK > select ARMADA_370_XP_IRQ > select ARMADA_38X_CLK > select HAVE_ARM_SCU > -- > 1.8.3.1 > -- Gregory Clement, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com ^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH 2/2] ARM: dts: armada-38x: Add arm_global_timer node 2017-08-01 16:36 ` Marcin Wojtas @ 2017-08-01 16:36 ` Marcin Wojtas -1 siblings, 0 replies; 10+ messages in thread From: Marcin Wojtas @ 2017-08-01 16:36 UTC (permalink / raw) To: linux-arm-kernel Since generic Cortex-A9 global timer is available after adding it to compilation, enable its node in armada-38x.dtsi. Signed-off-by: Marcin Wojtas <mw@semihalf.com> --- arch/arm/boot/dts/armada-38x.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi index af31f5d..7ff0811e 100644 --- a/arch/arm/boot/dts/armada-38x.dtsi +++ b/arch/arm/boot/dts/armada-38x.dtsi @@ -154,6 +154,13 @@ reg = <0xc000 0x58>; }; + timer at c200 { + compatible = "arm,cortex-a9-global-timer"; + reg = <0xc200 0x20>; + interrupts = <GIC_PPI 11 (IRQ_TYPE_EDGE_RISING | GIC_CPU_MASK_SIMPLE(2))>; + clocks = <&coreclk 2>; + }; + timer at c600 { compatible = "arm,cortex-a9-twd-timer"; reg = <0xc600 0x20>; -- 1.8.3.1 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH 2/2] ARM: dts: armada-38x: Add arm_global_timer node @ 2017-08-01 16:36 ` Marcin Wojtas 0 siblings, 0 replies; 10+ messages in thread From: Marcin Wojtas @ 2017-08-01 16:36 UTC (permalink / raw) To: linux-kernel, linux-arm-kernel Cc: sebastian.hesselbarth, andrew, linux, jason, thomas.petazzoni, gregory.clement, will.deacon, robh+dt, mark.rutland, jaz, cognet, Marcin Wojtas Since generic Cortex-A9 global timer is available after adding it to compilation, enable its node in armada-38x.dtsi. Signed-off-by: Marcin Wojtas <mw@semihalf.com> --- arch/arm/boot/dts/armada-38x.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi index af31f5d..7ff0811e 100644 --- a/arch/arm/boot/dts/armada-38x.dtsi +++ b/arch/arm/boot/dts/armada-38x.dtsi @@ -154,6 +154,13 @@ reg = <0xc000 0x58>; }; + timer@c200 { + compatible = "arm,cortex-a9-global-timer"; + reg = <0xc200 0x20>; + interrupts = <GIC_PPI 11 (IRQ_TYPE_EDGE_RISING | GIC_CPU_MASK_SIMPLE(2))>; + clocks = <&coreclk 2>; + }; + timer@c600 { compatible = "arm,cortex-a9-twd-timer"; reg = <0xc600 0x20>; -- 1.8.3.1 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH 2/2] ARM: dts: armada-38x: Add arm_global_timer node 2017-08-01 16:36 ` Marcin Wojtas @ 2017-08-03 13:14 ` Gregory CLEMENT -1 siblings, 0 replies; 10+ messages in thread From: Gregory CLEMENT @ 2017-08-03 13:14 UTC (permalink / raw) To: linux-arm-kernel Hi Marcin, On mar., ao?t 01 2017, Marcin Wojtas <mw@semihalf.com> wrote: > Since generic Cortex-A9 global timer is available after adding > it to compilation, enable its node in armada-38x.dtsi. > > Signed-off-by: Marcin Wojtas <mw@semihalf.com> Applied on mvebu/dt Thanks, Gregory > --- > arch/arm/boot/dts/armada-38x.dtsi | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi > index af31f5d..7ff0811e 100644 > --- a/arch/arm/boot/dts/armada-38x.dtsi > +++ b/arch/arm/boot/dts/armada-38x.dtsi > @@ -154,6 +154,13 @@ > reg = <0xc000 0x58>; > }; > > + timer at c200 { > + compatible = "arm,cortex-a9-global-timer"; > + reg = <0xc200 0x20>; > + interrupts = <GIC_PPI 11 (IRQ_TYPE_EDGE_RISING | GIC_CPU_MASK_SIMPLE(2))>; > + clocks = <&coreclk 2>; > + }; > + > timer at c600 { > compatible = "arm,cortex-a9-twd-timer"; > reg = <0xc600 0x20>; > -- > 1.8.3.1 > -- Gregory Clement, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 2/2] ARM: dts: armada-38x: Add arm_global_timer node @ 2017-08-03 13:14 ` Gregory CLEMENT 0 siblings, 0 replies; 10+ messages in thread From: Gregory CLEMENT @ 2017-08-03 13:14 UTC (permalink / raw) To: Marcin Wojtas Cc: linux-kernel, linux-arm-kernel, sebastian.hesselbarth, andrew, linux, jason, thomas.petazzoni, will.deacon, robh+dt, mark.rutland, jaz, cognet Hi Marcin, On mar., août 01 2017, Marcin Wojtas <mw@semihalf.com> wrote: > Since generic Cortex-A9 global timer is available after adding > it to compilation, enable its node in armada-38x.dtsi. > > Signed-off-by: Marcin Wojtas <mw@semihalf.com> Applied on mvebu/dt Thanks, Gregory > --- > arch/arm/boot/dts/armada-38x.dtsi | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi > index af31f5d..7ff0811e 100644 > --- a/arch/arm/boot/dts/armada-38x.dtsi > +++ b/arch/arm/boot/dts/armada-38x.dtsi > @@ -154,6 +154,13 @@ > reg = <0xc000 0x58>; > }; > > + timer@c200 { > + compatible = "arm,cortex-a9-global-timer"; > + reg = <0xc200 0x20>; > + interrupts = <GIC_PPI 11 (IRQ_TYPE_EDGE_RISING | GIC_CPU_MASK_SIMPLE(2))>; > + clocks = <&coreclk 2>; > + }; > + > timer@c600 { > compatible = "arm,cortex-a9-twd-timer"; > reg = <0xc600 0x20>; > -- > 1.8.3.1 > -- Gregory Clement, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com ^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2017-08-03 13:17 UTC | newest] Thread overview: 10+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2017-08-01 16:36 [PATCH 0/2] Add generic Cortex-A9 timer for Armada 38x Marcin Wojtas 2017-08-01 16:36 ` Marcin Wojtas 2017-08-01 16:36 ` [PATCH 1/2] ARM: mvebu: enable ARM_GLOBAL_TIMER compilation Armada 38x platforms Marcin Wojtas 2017-08-01 16:36 ` Marcin Wojtas 2017-08-03 13:17 ` Gregory CLEMENT 2017-08-03 13:17 ` Gregory CLEMENT 2017-08-01 16:36 ` [PATCH 2/2] ARM: dts: armada-38x: Add arm_global_timer node Marcin Wojtas 2017-08-01 16:36 ` Marcin Wojtas 2017-08-03 13:14 ` Gregory CLEMENT 2017-08-03 13:14 ` Gregory CLEMENT
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