[PATCH v6 0/3] Timer support for ARM Tegra

[Thierry Reding]

On Tue, Jan 24, 2023 at 08:57:48AM +0200, Svyatoslav Ryhel wrote:
> - ARM: tegra: remap clock_osc_freq for all Tegra family
> Enum clock_osc_freq was designed to use only with T20.
> This patch remaps it to use additional frequencies, added in
> T30+ SoC while maintaining backwards compatibility with T20.
> 
> - drivers: timer: add timer driver for ARMv7 based Tegra devices
> Add timer support for T20/T30/T114 and T124 based devices.
> Driver is based on DM, has device tree support and can be
> used on SPL and early boot stage.
> 
> - ARM: tegra: include timer as default option
> Enable TIMER as default option for all Tegra devices and
> enable TEGRA_TIMER for TEGRA_ARMV7_COMMON. Additionally
> enable SPL_TIMER if build as SPL part and drop deprecated
> configs from common header.
> 
> P. S. I have no arm64 Tegra and according to comment in 
> tegra-common.h
> Use the Tegra US timer on ARMv7, but the architected timer on ARMv8.
> 
> Svyatoslav Ryhel (3):
>   ARM: tegra: remap clock_osc_freq for all Tegra family
>   drivers: timer: add timer driver for ARMv7 based Tegra devices
>   ARM: tegra: include timer as default option

This causes a regression on Tegra210 (Jetson TX1). I'm trying to
investigate, but it's complicated by the fact that I'm not getting out
any debug prints, so I suspect the issue is happening quite early.

Thierry

> 
>  arch/arm/Kconfig                        |   1 +
>  arch/arm/include/asm/arch-tegra/clock.h |   9 +-
>  arch/arm/mach-tegra/Kconfig             |   2 +
>  arch/arm/mach-tegra/clock.c             |  17 +++-
>  arch/arm/mach-tegra/cpu.c               |  70 ++++++++++---
>  arch/arm/mach-tegra/tegra114/clock.c    |  13 +--
>  arch/arm/mach-tegra/tegra124/clock.c    |  13 +--
>  arch/arm/mach-tegra/tegra20/clock.c     |   4 +-
>  arch/arm/mach-tegra/tegra210/clock.c    |  22 +----
>  arch/arm/mach-tegra/tegra30/clock.c     |  10 +-
>  drivers/timer/Kconfig                   |   8 ++
>  drivers/timer/Makefile                  |   1 +
>  drivers/timer/tegra-timer.c             | 126 ++++++++++++++++++++++++
>  drivers/usb/host/ehci-tegra.c           |  46 +++++++--
>  include/configs/tegra-common.h          |   6 --
>  15 files changed, 269 insertions(+), 79 deletions(-)
>  create mode 100644 drivers/timer/tegra-timer.c
> 
> -- 
> 2.37.2
> 
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