May 29, 2020

LINUX ETSEC DRIVER

Offset and length of the register set for the device – interrupts: The interpretation of time values for these clocks is unspecified. The implementation effort would be high, but the utility low. If present, indicates that the hardware supports stashing buffer descriptors in the L2. Reuse the hrtimer code. In the current patch set the kernel functionality is not implemented, since there are some issues to consider first.

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See the definition of the PHY node in booting-without-of. Since the hrtimer code uses a clock event device under the hood, it might be possible in theory to offer capable PHCs as clock event devices.

The package includes installation support and access to a dedicated support site. Fearing a lkml debate on the merits of either one, I went ahead and implemented both cases.

A user space application can read the PPS events and tune the system clock, just like when using other external time sources like radio clocks or GPS. As to other possible clock ids, the standard offers the following hint: Both approaches adequately cover the needed functionality, in my opinion. Time stamp external events 2. The COM and Limux are part of a development kit that also includes a power supply, cables, esec more. This patch set completes the picture by allow user space programs to adjust the PHC and to control its ancillary features.

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Linux BSP with 3. Later, kinux company made reference designs for Renesas SuperH processors, among other products. However, the idea of generating a clock id dynamically seems to have gained acceptance. In order to keep just one way, I will be happy to remove the less popular one.

The general idea is to advertise the available clock ids to user space via sysfs.

p1020, linux Qoriq SDK v1.4, problem with etsec gianfar driver.

Should be “network” – model: I etsrc not too sure that this is exactly what people imagined, but it is my best understanding so far. Adjust clock frequency – Ancillary clock features 1. This is an advanced power management capability allowing certain packet types user defined by filer rules to wake up the system. The PHC can be synchronized to within nanoseconds of an external time source, while timer wakeup latency even with rt kernels is tens of microseconds.

This patch set implements two different ways: Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. The main difference to v5 is that the character device interface has been replaced with one based on the posix clock system calls.

The interpretation of time values for these clocks is unspecified. Enable Linux PPS subsystem ilnux 3.

The last five add the new PTP hardware clock features. By adding one additional mode flag to the struct timex, the requirements for PHCs are also satisfied. These operations do not map at all to the POSIX clock functions, but one could offer them as a character device or via sysfs. Arcturus also appears to offer an optional enclosure for the Hostboard.

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The reg property should be chosen so it doesn’t interfere with other PHYs on the bus.

[PATCH 6/8] ptp: Added a clock that uses the eTSEC found on the MPC85xx.

Added a brand new class driver for ptp clocks. This switches are fast ethernet switches and connect to board with mii interfaces.

Also, looking at the hrtimer code, getting user timers right seems to have a number of gotchas and thorny issues. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. The Linux BSP, development kit, and demo software, are pre-installed on the module along with Arcturus Management Middleware for lijux management and other duties.

Added a simulated PTP hardware clock.