[v1,0/3] clk: tegra: add DFLL support for Tegra 4

Message

Svyatoslav Ryhel March 21, 2025, 9:55 a.m. UTC

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.

Svyatoslav Ryhel (3):
  drivers: cpufreq: add Tegra 4 support
  drivers: clk: tegra: add DFLL support for Tegra 4
  ARM: tegra: Add DFLL clock support on Tegra 4

 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