Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 16 Jan 2023 18:09:05 +0200 | Subject | Re: [PATCH net-next v2 2/3] net: ethernet: ti: am65-cpts: add pps support | From | Roger Quadros <> |
| |
On 16/01/2023 10:55, Siddharth Vadapalli wrote: > From: Grygorii Strashko <grygorii.strashko@ti.com> > > CPTS doesn't have HW support for PPS ("pulse per second”) signal > generation, but it can be modeled by using Time Sync Router and routing > GenFx (periodic signal generator) output to CPTS_HWy_TS_PUSH (hardware time > stamp) input, and configuring GenFx to generate 1sec pulses. > > +------------------------+ > | CPTS | > | | > +--->CPTS_HW4_PUSH GENFx+---+ > | | | | > | +------------------------+ | > | | > +--------------------------------+ > > Add corresponding support to am65-cpts driver. The DT property "ti,pps" > has to be used to enable PPS support and configure pair > [CPTS_HWy_TS_PUSH, GenFx]. > > Once enabled, PPS can be tested using ppstest tool: > # ./ppstest /dev/pps0 > > Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> > Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
| ![\](/images/icornerr.gif) |