linux-kernel - [PATCH v2 0/3] clk: tegra: add DFLL support for Tegra 4

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Message-ID: <20250714081713.8409-1-clamor95@gmail.com>
Date: Mon, 14 Jul 2025 11:17:10 +0300
From: Svyatoslav Ryhel <clamor95@...il.com>
To: Thierry Reding <thierry.reding@...il.com>,
	Thierry Reding <treding@...dia.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Prashant Gaikwad <pgaikwad@...dia.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Svyatoslav Ryhel <clamor95@...il.com>
Cc: linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: [PATCH v2 0/3] clk: tegra: add DFLL support for Tegra 4

DFLL is a dedicated clock source for the Fast CPU. The DFLL is based on
a ring oscillator and translates voltage changes into frequency
compensation changes needed to prevent the CPU from failing and is
essential for correct CPU frequency scaling.

---
Changes in v2:
- dropped 'drivers:' from commit title
- aligned naming to Tegra114
---

Svyatoslav Ryhel (3):
  drivers: cpufreq: add Tegra114 support
  clk: tegra: add DFLL support for Tegra114
  ARM: tegra: Add DFLL clock support on Tegra114

 arch/arm/boot/dts/nvidia/tegra114.dtsi     |  34 +++++++
 drivers/clk/tegra/Kconfig                  |   2 +-
 drivers/clk/tegra/clk-tegra114.c           |  30 +++++-
 drivers/clk/tegra/clk-tegra124-dfll-fcpu.c | 104 +++++++++++++++++++++
 drivers/clk/tegra/clk.h                    |   2 -
 drivers/cpufreq/cpufreq-dt-platdev.c       |   1 +
 drivers/cpufreq/tegra124-cpufreq.c         |   5 +-
 include/dt-bindings/reset/tegra114-car.h   |  13 +++
 8 files changed, 182 insertions(+), 9 deletions(-)
 create mode 100644 include/dt-bindings/reset/tegra114-car.h

-- 
2.48.1