| Message ID | 20180102164223.15230-5-stefan@agner.ch (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Stefan, On Tue, Jan 02, 2018 at 05:42:21PM +0100, Stefan Agner wrote: > Add per-core ARM architected timer. Unfortunately bootloaders (U-Boot) > currently do not make the necessary initialization. Also specifing the > clock manually using the clock-frequency property seems not to help. > Therefor leave the timer disabled by default for now. > > Signed-off-by: Stefan Agner <stefan@agner.ch> Any special purpose to use arch timer? Regards Dong Aisheng > --- > arch/arm/boot/dts/imx6ul.dtsi | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/arch/arm/boot/dts/imx6ul.dtsi b/arch/arm/boot/dts/imx6ul.dtsi > index 993fbdbdd506..4d76923e8f44 100644 > --- a/arch/arm/boot/dts/imx6ul.dtsi > +++ b/arch/arm/boot/dts/imx6ul.dtsi > @@ -110,6 +110,16 @@ > <0x00a06000 0x2000>; > }; > > + timer { > + compatible = "arm,armv7-timer"; > + interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, > + <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, > + <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, > + <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>; > + interrupt-parent = <&intc>; > + status = "disabled"; > + }; > + > ckil: clock-cli { > compatible = "fixed-clock"; > #clock-cells = <0>; > -- > 2.15.1 >
On 2018-01-09 10:34, Dong Aisheng wrote: > Hi Stefan, > > On Tue, Jan 02, 2018 at 05:42:21PM +0100, Stefan Agner wrote: >> Add per-core ARM architected timer. Unfortunately bootloaders (U-Boot) >> currently do not make the necessary initialization. Also specifing the >> clock manually using the clock-frequency property seems not to help. >> Therefor leave the timer disabled by default for now. >> >> Signed-off-by: Stefan Agner <stefan@agner.ch> > > Any special purpose to use arch timer? > It is the better option. It supports virtualization and allows direct user space access, e.g. as used in OpenSSL through _armv7_tick. -- Stefan >> --- >> arch/arm/boot/dts/imx6ul.dtsi | 10 ++++++++++ >> 1 file changed, 10 insertions(+) >> >> diff --git a/arch/arm/boot/dts/imx6ul.dtsi b/arch/arm/boot/dts/imx6ul.dtsi >> index 993fbdbdd506..4d76923e8f44 100644 >> --- a/arch/arm/boot/dts/imx6ul.dtsi >> +++ b/arch/arm/boot/dts/imx6ul.dtsi >> @@ -110,6 +110,16 @@ >> <0x00a06000 0x2000>; >> }; >> >> + timer { >> + compatible = "arm,armv7-timer"; >> + interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, >> + <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, >> + <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, >> + <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>; >> + interrupt-parent = <&intc>; >> + status = "disabled"; >> + }; >> + >> ckil: clock-cli { >> compatible = "fixed-clock"; >> #clock-cells = <0>; >> -- >> 2.15.1 >>
diff --git a/arch/arm/boot/dts/imx6ul.dtsi b/arch/arm/boot/dts/imx6ul.dtsi index 993fbdbdd506..4d76923e8f44 100644 --- a/arch/arm/boot/dts/imx6ul.dtsi +++ b/arch/arm/boot/dts/imx6ul.dtsi @@ -110,6 +110,16 @@ <0x00a06000 0x2000>; }; + timer { + compatible = "arm,armv7-timer"; + interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>; + interrupt-parent = <&intc>; + status = "disabled"; + }; + ckil: clock-cli { compatible = "fixed-clock"; #clock-cells = <0>;
Add per-core ARM architected timer. Unfortunately bootloaders (U-Boot) currently do not make the necessary initialization. Also specifing the clock manually using the clock-frequency property seems not to help. Therefor leave the timer disabled by default for now. Signed-off-by: Stefan Agner <stefan@agner.ch> --- arch/arm/boot/dts/imx6ul.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+)