From 56a1c778c7663a3068a59b4cb8c8fd27506b3eca Mon Sep 17 00:00:00 2001 From: Min Li Date: Tue, 14 Jul 2020 13:15:20 -0400 Subject: docs: ptp.rst: add support for Renesas (IDT) ClockMatrix MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add below to “Ancillary clock features” section - Low Pass Filter (LPF) access from user space Add below to list of “Supported hardware” section + Renesas (IDT) ClockMatrix™ Signed-off-by: Min Li Signed-off-by: David S. Miller --- Documentation/driver-api/ptp.rst | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'Documentation/driver-api/ptp.rst') diff --git a/Documentation/driver-api/ptp.rst b/Documentation/driver-api/ptp.rst index a15192e32347..664838ae7776 100644 --- a/Documentation/driver-api/ptp.rst +++ b/Documentation/driver-api/ptp.rst @@ -23,6 +23,7 @@ PTP hardware clock infrastructure for Linux + Ancillary clock features - Time stamp external events - Period output signals configurable from user space + - Low Pass Filter (LPF) access from user space - Synchronization of the Linux system time via the PPS subsystem PTP hardware clock kernel API @@ -94,3 +95,14 @@ Supported hardware - Auxiliary Slave/Master Mode Snapshot (optional interrupt) - Target Time (optional interrupt) + + * Renesas (IDT) ClockMatrix™ + + - Up to 4 independent PHC channels + - Integrated low pass filter (LPF), access via .adjPhase (compliant to ITU-T G.8273.2) + - Programmable output periodic signals + - Programmable inputs can time stamp external triggers + - Driver and/or hardware configuration through firmware (idtcm.bin) + - LPF settings (bandwidth, phase limiting, automatic holdover, physical layer assist (per ITU-T G.8273.2)) + - Programmable output PTP clocks, any frequency up to 1GHz (to other PHY/MAC time stampers, refclk to ASSPs/SoCs/FPGAs) + - Lock to GNSS input, automatic switching between GNSS and user-space PHC control (optional) -- cgit v1.2.3