From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Osipenko Subject: [PATCH v3 0/8] NVIDIA Tegra clocksource driver improvements Date: Fri, 24 May 2019 18:32:45 +0300 Message-ID: <20190524153253.28564-1-digetx@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Daniel Lezcano , Thomas Gleixner , Joseph Lo , Thierry Reding , Jonathan Hunter , Peter De Schrijver Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, Nicolas Chauvet List-Id: linux-tegra@vger.kernel.org Hello, This series primarily unifies the driver code across all Tegra SoC generations. In a result the clocksources are allocated per-CPU on older Tegra's and have a higher rating than the arch-timer, the newer Tegra210 is getting support for microsecond clocksource and the driver's code is getting much cleaner. Note that arch-timer usage is discouraged on all Tegra's due to the time jitter caused by the CPU frequency scaling. The series was extensively tested on Tegra20 and Tegra30. Changelog: v3: Fixed compilation on ARM64. Turned out that it doesn't have the delay-timer, thanks to Nicolas Chauvet for the report. Added new "Support COMPILE_TEST universally" patch for better compile-test coverage. v2: Rebased on recent linux-next. Now all of #ifdef's are removed from the code due to the recent patch that generalized persistent clocksource. Couple other minor cosmetic changes. Dmitry Osipenko (8): clocksource/drivers/tegra: Support per-CPU timers on all Tegra's clocksource/drivers/tegra: Unify timer code clocksource/drivers/tegra: Reset hardware state on init clocksource/drivers/tegra: Replace readl/writel with relaxed versions clocksource/drivers/tegra: Release all IRQ's on request_irq() error clocksource/drivers/tegra: Minor code clean up clocksource/drivers/tegra: Use SPDX identifier clocksource/drivers/tegra: Support COMPILE_TEST universally drivers/clocksource/Kconfig | 4 +- drivers/clocksource/timer-tegra20.c | 276 +++++++++++++--------------- 2 files changed, 127 insertions(+), 153 deletions(-) -- 2.21.0