On Wed, Nov 29, 2017 at 02:54:58PM +0800, Yangbo Lu wrote: > The timer fixed interval period pulse generator register > is used to generate periodic pulses. The down count > register loads the value programmed in the fixed period > interval (FIPER). At every tick of the timer accumulator > overflow, the counter decrements by the value of > TMR_CTRL[TCLK_PERIOD]. It generates a pulse when the down > counter value reaches zero. It reloads the down counter > in the cycle following a pulse. To use the TMR_FIPER1 > register to generate a 1 PPS event, the value > (10^9 nanoseconds) - TCLK_PERIOD should be programmed. > It should be 999999995 not 999999990 since TCLK_PERIOD > is 5. > > Signed-off-by: Yangbo Lu <yangbo.lu@xxxxxxx> Again, for arm dts, we usually use prefix like 'ARM: dts: ...' I fixed it up and applied the patch. Shawn > --- > Changes for v2: > - Added Shawn into cc list. > --- > arch/arm/boot/dts/ls1021a.dtsi | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi > index 64249726b3cb..a861a4b9e319 100644 > --- a/arch/arm/boot/dts/ls1021a.dtsi > +++ b/arch/arm/boot/dts/ls1021a.dtsi > @@ -589,7 +589,7 @@ > fsl,tclk-period = <5>; > fsl,tmr-prsc = <2>; > fsl,tmr-add = <0xaaaaaaab>; > - fsl,tmr-fiper1 = <999999990>; > + fsl,tmr-fiper1 = <999999995>; > fsl,tmr-fiper2 = <99990>; > fsl,max-adj = <499999999>; > }; > -- > 2.14.1 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
