[v2] arm: dts: ls1021a: fix the value of TMR_FIPER1
Shawn Guo
shawnguo at kernel.org
Wed Nov 29 16:29:06 PST 2017
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 at nxp.com>
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
>
>
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