131ab09b4SDipen Patel# SPDX-License-Identifier: GPL-2.0-only 231ab09b4SDipen Patelmenuconfig HTE 331ab09b4SDipen Patel bool "Hardware Timestamping Engine (HTE) Support" 431ab09b4SDipen Patel help 531ab09b4SDipen Patel Hardware Timestamping Engine (HTE) Support. 631ab09b4SDipen Patel 731ab09b4SDipen Patel Some devices provide a hardware timestamping engine which can 831ab09b4SDipen Patel timestamp certain device lines/signals in realtime. It comes with a 931ab09b4SDipen Patel benefit for the applications needing accurate timestamping event with 1031ab09b4SDipen Patel less jitter. This framework provides a generic interface to such HTE 1131ab09b4SDipen Patel providers and consumer devices. 1231ab09b4SDipen Patel 1331ab09b4SDipen Patel If unsure, say no. 1431ab09b4SDipen Patel 1509574ccaSDipen Patelif HTE 1609574ccaSDipen Patel 1709574ccaSDipen Patelconfig HTE_TEGRA194 1809574ccaSDipen Patel tristate "NVIDIA Tegra194 HTE Support" 1909574ccaSDipen Patel depends on ARCH_TEGRA_194_SOC 2009574ccaSDipen Patel help 2109574ccaSDipen Patel Enable this option for integrated hardware timestamping engine also 2209574ccaSDipen Patel known as generic timestamping engine (GTE) support on NVIDIA Tegra194 2309574ccaSDipen Patel systems-on-chip. The driver supports 352 LIC IRQs and 39 AON GPIOs 2409574ccaSDipen Patel lines for timestamping in realtime. 2509574ccaSDipen Patel 26*9a75a7cdSDipen Patelconfig HTE_TEGRA194_TEST 27*9a75a7cdSDipen Patel tristate "NVIDIA Tegra194 HTE Test" 28*9a75a7cdSDipen Patel depends on HTE_TEGRA194 29*9a75a7cdSDipen Patel help 30*9a75a7cdSDipen Patel The NVIDIA Tegra194 GTE test driver demonstrates how to use HTE 31*9a75a7cdSDipen Patel framework to timestamp GPIO and LIC IRQ lines. 32*9a75a7cdSDipen Patel 3309574ccaSDipen Patelendif 34