u-boot.git/drivers/timer/Makefile, branch v2022.04

timer: imx-gpt: Add timer support for i.MX SoCs family

2021-06-09T11:01:33+00:00

This timer driver uses GPT Timer (General Purpose Timer) available on
a lot of i.MX SoCs family. This driver deals with both 24Mhz oscillator
as well as peripheral clock.

Signed-off-by: Giulio Benetti 
[Giulio: added the driver's stub and handled peripheral clock prescaler
setting making driver to work correctly]
Signed-off-by: Jesse Taube 
[Jesse: added init, setting prescaler for 24Mhz support and enabling
timer]

riscv: Split SiFive CLINT support between SPL and U-Boot proper

2021-05-17T08:42:24+00:00

At present there is only one Kconfig option CONFIG_SIFIVE_CLINT to
control the enabling of SiFive CLINT support in both SPL (M-mode)
and U-Boot proper (S-mode). So for a typical SPL config that the
SiFive CLINT driver is enabled in both SPL and U-Boot proper, that
means the S-mode U-Boot tries to access the memory-mapped CLINT
registers directly, instead of the normal 'rdtime' instruction.

This was not a problem before, as the hardware does not forbid the
access from S-mode. However this becomes an issue now with OpenSBI
commit 8b569803475e ("lib: utils/sys: Add CLINT memregion in the root domain")
that the SiFive CLINT register space is protected by PMP for M-mode
access only. U-Boot proper does not boot any more with the latest
OpenSBI, that access exceptions are fired forever from U-Boot when
trying to read the timer value via the SiFive CLINT driver in U-Boot.

To solve this, we need to split current SiFive CLINT support between
SPL and U-Boot proper, using 2 separate Kconfig options.

Signed-off-by: Bin Meng 
Reviewed-by: Sean Anderson

riscv: Move timer portions of SiFive CLINT to drivers/timer

2020-10-26T02:01:28+00:00

Half of this driver is a DM-based timer driver, and half is RISC-V-specific
IPI code. Move the timer portions in with the other timer drivers. The
KConfig is not moved, since it also enables IPIs. It could also be split
into two configs, but no boards use the timer but not the IPI atm, so I
haven't split it.

Signed-off-by: Sean Anderson 
Reviewed-by: Simon Glass 
Reviewed-by: Rick Chen

timer: Add _TIMER suffix to Andes PLMT Kconfig

2020-10-26T02:01:28+00:00

This matches the naming scheme of other timer drivers.

Signed-off-by: Sean Anderson 
Reviewed-by: Simon Glass 
Reviewed-by: Rick Chen

riscv: Move Andes PLMT driver to drivers/timer

2020-10-26T02:01:28+00:00

This is a regular timer driver, and should live with the other timer
drivers.

Signed-off-by: Sean Anderson 
Reviewed-by: Simon Glass 
Reviewed-by: Rick Chen

timer: mchp-pit64b: add support for pit64b

2020-09-28T11:06:50+00:00

Add support for Microchip PIT64B timer. The timer is 64 bit length and
is used as a free running counter (in continuous mode with highest values
for period registers). The clock feeding the timer would be no more
than 12.5MHz.

Signed-off-by: Claudiu Beznea

timer: Add driver for Nomadik Multi Timer Unit (MTU)

2020-01-22T22:47:56+00:00

The Nomadik Multi Timer Unit (MTU) provides 4 decrementing
free-running timers. It is used in ST-Ericsson Ux500 SoCs.

The driver uses the first timer to implement UCLASS_TIMER.

Signed-off-by: Stephan Gerhold 
Reviewed-by: Linus Walleij

timer: renesas: Add RZ/A1 R7S72100 OSTM timer driver

2019-05-07T03:41:32+00:00

Add OSTM timer driver for RZ/A1 SoC. The IP is very different
from the R-Car Gen2/Gen3 one already present in the tree, hence
a custom driver.

Signed-off-by: Marek Vasut 
Cc: Chris Brandt 
Cc: Nobuhiro Iwamatsu

timer: Add generic driver for RISC-V privileged architecture defined timer

2018-12-18T01:56:26+00:00

RISC-V privileged architecture v1.10 defines a real-time counter,
exposed as a memory-mapped machine-mode register - mtime. mtime must
run at constant frequency, and the platform must provide a mechanism
for determining the timebase of mtime. The mtime register has a
64-bit precision on all RV32, RV64, and RV128 systems.

Different platform may have different implementation of the mtime
block hence an API riscv_get_time() is required by this driver for
platform codes to hide such implementation details. For example,
on some platforms mtime is provided by the CLINT module, while on
some other platforms a simple 'rdtime' can be used to get the timer
counter.

With this timer driver the U-Boot timer functionalities like delay
works correctly now.

Signed-off-by: Bin Meng 
Reviewed-by: Lukas Auer 
Reviewed-by: Anup Patel

timer: MediaTek: add timer driver for MediaTek SoCs

2018-11-29T04:04:51+00:00

This patch adds clock source and clock event for the timer found
on the Mediatek SoCs.

Signed-off-by: Ryder Lee 
Tested-by: Matthias Brugger 
Reviewed-by: Simon Glass