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This commit introduces timer driver for ARC.
ARC timers are configured via ARC AUX registers so we use special
functions to access timer control registers.
This driver allows utilization of either timer0 or timer1
depending on which one is available in real hardware. Essentially
only existing timers should be mentioned in board's Device Tree
description.
Signed-off-by: Vlad Zakharov <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add ARM global timer based timer
Signed-off-by: Patrice Chotard <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.
Signed-off-by: Simon Glass <[email protected]>
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Add support for Watchdog Timer, which is compatible with AST2400 and
AST2500 watchdogs. There is no uclass for Watchdog yet, so the driver
does not follow the driver model. It also uses fixed clock, so no clock
driver is needed.
Add support for timer for Aspeed ast2400/ast2500 devices.
The driver actually controls several devices, but because all devices
share the same Control Register, it is somewhat difficult to completely
decouple them. Since only one timer is needed at the moment, this should
be OK. The timer uses fixed clock, so does not rely on a clock driver.
Add sysreset driver, which uses watchdog timer to do resets and particular
watchdog device to use is hardcoded (0)
Reviewed-by: Simon Glass <[email protected]>
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Earlier timer driver needed a clock-frequency property in compatible
device-tree nodes. Another way is to reference a clock via a phandle.
So now timer_pre_probe tries to get clock by reference through device
tree. In case it is impossible to get clock device through the
reference, clock-frequency property of the timer node is read to provide
backward compatibility.
Signed-off-by: Vlad Zakharov <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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OMAP timer driver directly typecasts fdt_addr_t to a pointer. This is
not strictly correct, as it gives a build warning when fdt_addr_t is u64.
So, use map_physmem for a proper typecasts.
This is inspired by commit 167efe01bc5a9 ("dm: ns16550: Use an address
instead of a pointer for the uart base")
Signed-off-by: Lokesh Vutla <[email protected]>
Reviewed-by: Tom Rini <[email protected]>
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Use this new function in places where it simplifies the code.
Signed-off-by: Simon Glass <[email protected]>
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Add support for the early timer so we can use tracing with sandbox again.
Signed-off-by: Simon Glass <[email protected]>
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In some cases the timer must be accessible before driver model is active.
Examples include when using CONFIG_TRACE to trace U-Boot's execution before
driver model is set up. Enable this option to use an early timer. These
functions must be supported by your timer driver: timer_early_get_count()
and timer_early_get_rate().
Signed-off-by: Simon Glass <[email protected]>
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A few of the functions in the timer uclass are not marked with 'notrace'. Fix
this so that tracing can be used with CONFIG_TRACE.
Signed-off-by: Simon Glass <[email protected]>
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A default invocation of sandbox U-Boot apparently uses no device tree,
which means that no timer is registers, which in turn means that the
sleep shell command hangs.
Fix the sandbox timer code to register a device when there's no DT, just
like e.g. the sandbox reset driver does. When there's no DT, the DM uclass
can't initialize clock_rate from DT, so set a default value in the
timer code instead.
Signed-off-by: Stephen Warren <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
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If a timer has a zero clock_rate, get_tbclk() will return zero for it,
which will cause tick_to_time() to perform a division-by-zero, which will
crash U-Boot.
Signed-off-by: Stephen Warren <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Adding a timer driver for omap devices based on driver model
and device tree.
Signed-off-by: Mugunthan V N <[email protected]>
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Like SPI and I2C, timer devices also have multiple chip
instances. This patch adds the flag 'DM_UC_FLAG_SEQ_ALIAS' in
timer_uclass driver to control device sequence numbering.
Signed-off-by: Mugunthan V N <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Tom Rini <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Adding timer init function in timer-uclass driver to create and
initialize the timer device on platforms where u-boot,dm-pre-reloc
is not used. Since there will be multiple timer devices in the
system, adding a tick-timer node in chosen node to know which
timer device to be used as tick timer in u-boot.
Signed-off-by: Mugunthan V N <[email protected]>
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Right now i8254_init() is called from timer_init() in the tsc timer
driver. But actually i8254 and tsc are completely different things.
Since tsc timer has been converted to driver model, we should find
a new place that is appropriate for U-Boot to call i8254_init(),
which is now x86_cpu_init_f().
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
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To group all dm timer drivers together, move tsc timer to
drivers/timer directory.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
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There are timers with a 64-bit counter value but current timer
uclass driver assumes a 32-bit one. Modify timer_get_count()
to ask timer driver to always return a 64-bit counter value,
and provide an inline helper function timer_conv_64() to handle
the 32-bit/64-bit conversion automatically.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
Signed-off-by: Simon Glass <[email protected]>
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We should use device tree to pass the clock frequency of the timer
instead of hardcoded in the driver codes.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Since we have timer uclass to get clock frequency for us, remove
the custom version in the altera timer driver.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Thomas Chou <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Every timer device needs to have a valid clock frequency and it
can be specified in the device tree. Use pre_probe() to get this
in the timer uclass driver.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Thomas Chou <[email protected]>
Acked-by: Simon Glass <[email protected]>
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This changes 'Timer' to 'timer' at several places.
Signed-off-by: Bin Meng <[email protected]>
Acked-by: Thomas Chou <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add a sandbox timer which get time from host os and a basic
test.
Signed-off-by: Thomas Chou <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Change ioremap() to map_physmem(), as it is more used in u-boot.
Signed-off-by: Thomas Chou <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>
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- Moved macro definitions to top
- Remove the penultimate comma in of_match ids
Signed-off-by: Thomas Chou <[email protected]>
Reviewed-by: Jagan Teki <[email protected]>
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Replace numerical bit shift with BIT macro
in altera_timer
:%s/(1 << nr)/BIT(nr)/g
where nr = 0, 1, 2 .... 31
Signed-off-by: Thomas Chou <[email protected]>
Reviewed-by: Jagan Teki <[email protected]>
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Convert altera timer to driver model.
Signed-off-by: Thomas Chou <[email protected]>
Acked-by: Chin Liang See <[email protected]>
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Implement a Timer uclass to work with lib/time.c.
Signed-off-by: Thomas Chou <[email protected]>
Acked-by: Simon Glass <[email protected]>
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