| 1 | # SPDX-License-Identifier: GPL-2.0-only |
| 2 | menuconfig HTE |
| 3 | bool "Hardware Timestamping Engine (HTE) Support" |
| 4 | help |
| 5 | Hardware Timestamping Engine (HTE) Support. |
| 6 | |
| 7 | Some devices provide a hardware timestamping engine which can |
| 8 | timestamp certain device lines/signals in realtime. It comes with a |
| 9 | benefit for the applications needing accurate timestamping event with |
| 10 | less jitter. This framework provides a generic interface to such HTE |
| 11 | providers and consumer devices. |
| 12 | |
| 13 | If unsure, say no. |
| 14 | |
| 15 | if HTE |
| 16 | |
| 17 | config HTE_TEGRA194 |
| 18 | tristate "NVIDIA Tegra194 HTE Support" |
| 19 | depends on (ARCH_TEGRA || COMPILE_TEST) |
| 20 | depends on GPIOLIB |
| 21 | help |
| 22 | Enable this option for integrated hardware timestamping engine also |
| 23 | known as generic timestamping engine (GTE) support on NVIDIA Tegra194 |
| 24 | and later systems-on-chip. The driver supports 352 LIC IRQs and 39 |
| 25 | AON GPIOs lines for timestamping in realtime. |
| 26 | |
| 27 | config HTE_TEGRA194_TEST |
| 28 | tristate "NVIDIA Tegra194 HTE Test" |
| 29 | depends on (HTE_TEGRA194 || COMPILE_TEST) |
| 30 | help |
| 31 | The NVIDIA Tegra194 GTE test driver demonstrates how to use HTE |
| 32 | framework to timestamp GPIO and LIC IRQ lines. |
| 33 | |
| 34 | endif |