u-boot.git/drivers/timer, branch v2023.04-rc2

timer: Tidy up use of notrace

2023-02-11T17:22:34+00:00

Tracing is typically enabled by the time driver model starts up, so there
is no point in adding a 'notrace' to the timer-init function. However,
once the driver model timer is enabled, we do need to be able to access
the timer's private data when reading the timer, so add it to the core
function needed for that.

Update the function's documentation while we are here.

Signed-off-by: Simon Glass

drivers: timer: add driver for ARMv7 based Tegra devices and T210

2023-02-02T17:16:41+00:00

Add timer support for T20/T30/T114/T124 and T210 based devices.
Driver is based on DM, has device tree support and can be
used on SPL and early boot stage.

Arm64 Tegra (apart T210) according to comment in tegra-common.h use
architected timer.

Tested-by: Andreas Westman Dorcsak  # ASUS TF600T T30
Tested-by: Jonas Schwöbel  # Surface RT T30
Tested-by: Robert Eckelmann  # ASUS TF101 T20
Tested-by: Agneli  # Toshiba AC100 T20
Tested-by: Svyatoslav Ryhel  # LG P895 T30
Co-developed-by: Jonas Schwöbel 
Signed-off-by: Jonas Schwöbel 
Signed-off-by: Svyatoslav Ryhel 
Reviewed-by: Simon Glass 
Signed-off-by: Tom

global: Finish CONFIG -> CFG migration

2023-01-20T17:27:24+00:00

At this point, the remaining places where we have a symbol that is
defined as CONFIG_... are in fairly odd locations. While as much dead
code has been removed as possible, some of these locations are simply
less obvious at first. In other cases, this code is used, but was
defined in such a way as to have been missed by earlier checks.  Perform
a rename of all such remaining symbols to be CFG_... rather than
CONFIG_...

Signed-off-by: Tom Rini 
Reviewed-by: Simon Glass

timer: orion-timer: Fix problem in early_init_done()

2023-01-17T06:06:37+00:00

It was noticed that Clearfog is currently broken with this newly
introduced early_init_done() function. Apparently the timer is enabled
here when U-Boot is run but not configured - at least not correctly.
Resulting in a hangup in the timer reading functions.

To fix this, also read the value of the reload register and check it's
value with the one written to by U-Boot. Only if this matches, the
init has already been done.

Fixes: 5387b093cb79 ("timer: orion-timer: Fix problem with early static variable")
Signed-off-by: Stefan Roese 
Acked-by: Pali Rohár 
Cc: Martin Rowe 
Cc: Tony Dinh 
Cc: Pali Rohár 
Cc: Michael Walle

Merge branch 'next'

2023-01-09T16:30:08+00:00

Signed-off-by: Tom Rini

timer: orion-timer: Fix problem with early static variable

2023-01-02T08:14:16+00:00

We've noticed that at least one Kirkwood board (Pogo v4) has problems
with the new orion DM timer implementation. Debugging revealed that this
issue is related with the static variable "early_init_done" which does
not work correctly before relocation in all cases.

This patch removes this static variable and replaces it's functionality
via a function that detects if the timer is already initialized.

Signed-off-by: Stefan Roese 
Cc: Pali Rohár 
Cc: Michael Walle 
Cc: Tony Dinh 
Tested-by: Tony Dinh

global: Move remaining CONFIG_SYS_* to CFG_SYS_*

2022-12-05T21:06:08+00:00

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.

Signed-off-by: Tom Rini 
Reviewed-by: Simon Glass

timer: xilinx-timer: use timer_conv_64() to fix timer wrap around

2022-11-22T14:02:07+00:00

Current xilinx_timer_get_count() implementation does not take into account
the periodic 32-bit wrap arounds, as it directly returns the 32-bit counter
register value. The roll-overs cause problems in the upper timer layers, as
generic timer code expects an incrementing 64-bit value from get_count() to
work correctly.

Add the missing 64-bit up-conversion to fix random hangs/delays in
__udelay().

Fixes: a36d86720f ("microblaze: Convert axi timer to DM driver")
Signed-off-by: Ovidiu Panait 
Reviewed-by: Michal Simek 
Link: https://lore.kernel.org/r/20221012053656.1492457-3-ovpanait@gmail.com
Signed-off-by: Michal Simek

timer-uclass: relocate ops pointers for CONFIG_NEEDS_MANUAL_RELOC

2022-11-22T14:02:07+00:00

Relocate timer_ops pointers when CONFIG_NEEDS_MANUAL_RELOC is enabled.

The (gd->flags & GD_FLG_RELOC) check was added to make sure the reloc_done
logic works for drivers that use DM_FLAG_PRE_RELOC.

Signed-off-by: Ovidiu Panait 
Reviewed-by: Simon Glass 
Link: https://lore.kernel.org/r/20221012053656.1492457-2-ovpanait@gmail.com
Signed-off-by: Michal Simek

timer-uclass: add timer_get_ops() macro

2022-11-22T14:02:07+00:00

Align timer uclass with the other subsystems and provide a timer_get_ops()
convenience macro.

Using this instead of the generic device_get_ops() also prevents
-Wdiscarded-qualifiers warnings when used with non-const variables.

Signed-off-by: Ovidiu Panait 
Reviewed-by: Simon Glass 
Link: https://lore.kernel.org/r/20221012053656.1492457-1-ovpanait@gmail.com
Signed-off-by: Michal Simek