18c2ecf20Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0-only 28c2ecf20Sopenharmony_ci# 38c2ecf20Sopenharmony_ci# PPS generators configuration 48c2ecf20Sopenharmony_ci# 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_cicomment "PPS generators support" 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ciconfig PPS_GENERATOR_PARPORT 98c2ecf20Sopenharmony_ci tristate "Parallel port PPS signal generator" 108c2ecf20Sopenharmony_ci depends on PARPORT && BROKEN 118c2ecf20Sopenharmony_ci help 128c2ecf20Sopenharmony_ci If you say yes here you get support for a PPS signal generator which 138c2ecf20Sopenharmony_ci utilizes STROBE pin of a parallel port to send PPS signals. It uses 148c2ecf20Sopenharmony_ci parport abstraction layer and hrtimers to precisely control the signal. 15