Commit graph

68 commits

Author SHA1 Message Date
Bin Meng
94e72a6bd9 x86: timer: tsc: Allow specifying clock rate from device tree again
With the introduction of early timer support in the TSC driver,
the capability of getting clock rate from device tree was lost
unfortunately. Now we bring such functionality back, but with a
limitation that when TSC is used as early timer, specifying clock
rate from device tree does not work.

This fixes random boot failures seen on QEMU targets: printing "TSC
frequency is ZERO" and reset forever.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-07-02 09:23:28 +08:00
Michal Simek
56c0e646c4 timer: cadence: Implement timer_get_boot_us
This function is required for adding bootstage support.
Also enable it directly for ZynqMP R5 configuration.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-06-15 08:06:31 +02:00
Christian Gmeiner
acc2482fd8 x86: tsc: add support for reading CPU freq from cpuid
Starting with cpuid level 0x16 (Skylake-based processors)
it is possible to get CPU base freq via cpuid.

This fixes booting on a skylake based system.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: fixed wrong indention of labels]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2018-06-13 09:50:57 +08:00
Michal Simek
72b88103bb timer: cadence: Use live-tree functions
Use live-tree functions.

Reported-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-05-31 13:50:39 +02:00
Michal Simek
72c37d1221 timer: Add Cadence TTC timer counter support
This driver was tested on Xilinx ZynqMP SoC.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-05-11 09:23:43 +02:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Tom Rini
d024236e5a Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR
We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-27 14:54:48 -04:00
Philipp Tomsich
e0e1d3f98c rockchip: timer: add compatible strings for rk3188 and rk3288
The DM driver for ockchip timer blocks is also applicable to the
RK3188 and RK3288 timer blocks: add 'rockchip,rk3188-timer' and
'rockchip,rk3288-timer' to its compatible list to support devices
claiming compatibility with these.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2018-04-25 22:20:05 +02:00
Patrice Chotard
5120a083e7 timer: stm32: Add timer support for STM32 SoCs family
This timer driver is using GPT Timer (General Purpose Timer)
available on all STM32 SOCs family.
This driver can be used on STM32F4/F7 and H7 SoCs family

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-03-13 21:45:37 -04:00
Rick Chen
0f4a395f78 atcpit100: timer: Remove arch dependency.
ATCPIT100 is often used in AE3XX platform which is
based on NDS32 architecture recently. But in the future
Andestech will have AE250 platform which is embeded
ATCPIT100 timer based on RISCV architecture.

Signed-off-by: Rick Chen <rick@andestech.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-30 09:39:31 +08:00
Rick Chen
c6c85dc87d cosmetic: atcpit100_timer: Use device api to get platdata
Use dev_get_platdata to get private platdata.

Signed-off-by: rick <rick@andestech.com>
Signed-off-by: Rick Chen <rickchen36@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-30 09:39:07 +08:00
Rick Chen
033d408102 cosmetic: atcpit100_timer: Rename function name as atcpit100
Integrate function and struct name as atcpit100 will be
more reasonable.

Signed-off-by: rick <rick@andestech.com>
Signed-off-by: Rick Chen <rickchen36@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-30 09:39:01 +08:00
Rick Chen
fa3e354b2b ae3xx: timer: Rename AE3XX to ATCPIT100
ATCPIT100 is Andestech timer IP which is embeded
in AE3XX and AE250 boards. So rename AE3XX to
ATCPIT100 will be more make sence.

Signed-off-by: rick <rick@andestech.com>
Signed-off-by: Rick Chen <rickchen36@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-30 09:38:54 +08:00
Rick Chen
0e920ef052 ae3xx: timer: Fix ae3xx timer work abnormal in 64 bit.
It will be work fine with unsigned long declaretion in timer
register struct when system is 32 bit. But it will not work
well when system is 64 bit. Replace it by u32 and verify both
ok in 32/64 bit.

Signed-off-by: Rick Chen <rick@andestech.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-30 09:38:21 +08:00
Patrice Chotard
fb48bc448c sti: fix STMicroelectronics copyright
Uniformize all STMicroelectronics copyrights headers for STi
related code.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2017-11-06 09:51:01 -05:00
Philipp Tomsich
8158a848fa rockchip: timer: update for 32/64bit-aware OF_PLATDATA
With dtoc emitting fdt64_t for addresses (and region sizes), the array
indices for accessing the reg[] array needs to be adjusted.  This
adjusts the Rockchip DM timer driver to correctly handle OF_PLATDATA
given this new structure layout.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-18 20:40:37 +02:00
Philipp Tomsich
6675c952f2 rockchip: timer: Convert to livetree
Update the Rockchip timer driver to support a live device tree.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-09-18 20:40:34 +02:00
Philipp Tomsich
cc7ce94e02 rockchip: timer: implement timer_get_boot_us
To make the Rockchip DM timer driver useful for the timing of
bootstages, we need a few enhancements:
 - This implements timer_get_boot_us.
 - This avoids reinitialising the timer, if it has already been
   set up (e.g. by our TPL and SPL stages). Now, we have a single
   timebase ticking from TPL through the full U-Boot.
 - This adds support for reading the timer even before the
   device-model is ready: we find the timer via /chosen/tick-timer,
   then read its address and clock-frequency, and finally read the
   timeval directly).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-09-18 20:40:34 +02:00
Philipp Tomsich
af82315164 dm: timer: handle being called before dm_root is ready
When used with bootstage recording, dm_timer_init may be called
surprisingly early: i.e. before dm_root is ready. To deal with
this case, we explicitly check for this condition and return
-EAGAIN to the caller (refer to drivers/timer/rockchip_timer.c
for a case where this is needed/used).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-09-18 20:40:33 +02:00
Philipp Tomsich
b61e8b0c9e dm: timer: Convert to livetree
This updates dm_timer_init to support a live tree and deals with
some fallout (i.e. the need to restructure the code such, that we
don't need multiple discontinuous #if CONFIG_IS_ENABLED blocks).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-09-18 20:40:33 +02:00
Simon Glass
2ff50f5fa4 dm: x86: Allow TSC timer to be used before DM is ready
With bootstage we need access to the timer before driver model is set up.
To handle this, put the required state in global_data and provide a new
function to set up the device, separate from the driver's probe() method.

This will be used by the 'early' timer also.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-09-16 14:57:44 +08:00
Bin Meng
3df39ef107 x86: tsc: Add Airmont reference clock values
Per the Intel 64 and IA-32 Architecture Software Developer's Manual,
add the reference clock for Intel Atom Processors based on the Airmont
Microarchitecture (Braswell).

This keeps in sync with Linux kernel commit:
  6fcb41c: x86/tsc_msr: Add Airmont reference clock values

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-16 14:57:44 +08:00
Philipp Tomsich
5798d503fc rockchip: timer: fix U_BOOT_DRIVER name
When I originally added this driver, I did some careless (and in
retrospect: mindless) copy & paste for the U_BOOT_DRIVER structure
skeletion... unfortunately, the 'arc_timer' string was committed
and slipped through all reviews.

This fixes the U_BOOT_DRIVER name to read 'rockchip_rk3368_timer'
(as originally intended).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reported-by: Artturi Alm <artturi.alm@gmail.com>
2017-09-05 11:04:35 +02:00
Wenyou.Yang@microchip.com
47edaea494 driver: timer: Add the Atmel PIT timer driver
Add the new Atmel PIT timer driver, which supports the driver model
and device tree.

Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
2017-08-26 14:56:08 -04:00
Philipp Tomsich
1168d2dd4b rockchip: timer: add device-model timer driver for RK3368 (and similar)
This adds a device-model driver for the timer block in the RK3368 (and
similar devices that share the same timer block, such as the RK3288) for
the down-counting (i.e. non-secure) timers.

This allows us to configure U-Boot for the RK3368 in such a way that
we can run with the secure timer inaccessible or uninitialised (note
that the ARMv8 generic timer does not count, if the secure timer is
not enabled).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-13 17:12:36 +02:00
Philipp Tomsich
e9e5d9d29f dm: timer: normalise SPL and TPL support
To fully support DM timer in SPL and TPL, we need a few things cleaned
up and normalised:
- inclusion of the uclass and drivers should be an all-or-nothing
  decision for each stage and under control of $(SPL_TPL_)TIMER
  instead of having the two-level configuration with TIMER and
  $(SPL_TPL_)TIMER_SUPPORT
- when $(SPL_TPL_)TIMER is enabled, the ARMv8 generic timer code can
  not be compiled in

This normalises configuration to $(SPL_TPL_)TIMER and moves the config
options to drivers/timer/Kconfig (and cleans up the collateral damage
to some defconfigs that had SPL_TIMER_SUPPORT enabled).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-13 17:12:36 +02:00
Philipp Tomsich
b1a16002f2 timer: add OF_PLATDATA support for timer-uclass
The timer-uclass depends on full OF_CONTROL through its interrogation
of /chosen and the code to determine the clock-frequency.

For the OF_PLATDATA case, these code-paths are disabled and it becomes
the timer driver's responsibility to correctly set the clock-frequency
in the uclass priv-data.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-13 17:12:36 +02:00
Bin Meng
0ce9c57620 x86: kconfig: Select TIMER and X86_TSC_TIMER
Without a timer, U-Boot just doesn't boot. This is not something
we can turn off.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-01 20:17:02 +08:00
Bin Meng
167a40166b x86: tsc: Rename try_msr_calibrate_tsc() to cpu_mhz_from_msr()
Rename try_msr_calibrate_tsc() to cpu_mhz_from_msr(), as that
better describes what the routine does.

This keeps in sync with Linux kernel commit:
  02c0cd2: x86/tsc_msr: Remove irqoff around MSR-based TSC enumeration

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-01 20:17:02 +08:00
Bin Meng
f5757154bb x86: tsc: Correct Silvermont reference clock values
Atom processors use a 19.2 MHz crystal oscillator.

Early processors generate 100 MHz via 19.2 MHz * 26 / 5 = 99.84 MHz.

Later processors generate 100 MHz via 19.2 MHz * 125 / 24 = 100 MHz.

Update the Silvermont-based tables accordingly, matching the Software
Developers Manual.

Also, correct a 166 MHz entry that should have been 116 MHz, and add
a missing 80 MHz entry for VLV2.

This keeps in sync with Linux kernel commit:
  05680e7: x86/tsc_msr: Correct Silvermont reference clock values

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-01 20:17:02 +08:00
Bin Meng
c636774848 x86: tsc: Update comments and expand definitions in freq_desc_tables[]
Some processor abbreviations in the comments of freq_desc_tables[]
are obscure. This updates part of these to mention processors
that are known to us. Also expand frequency definitions.

This keeps in sync with Linux kernel commit:
  9e0cae9: x86/tsc_msr: Update comments, expand definitions

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-01 20:17:02 +08:00
Bin Meng
fde1801eaa x86: tsc: Remove the fail handling in try_msr_calibrate_tsc()
If either ratio or freq is zero, the return value is zero. There
is no need to create a fail branch and return zero there.

This keeps in sync with Linux kernel commit:
  14bb4e3: x86/tsc_msr: Remove debugging messages

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-01 20:17:02 +08:00
Bin Meng
0b992e4932 x86: tsc: Identify Intel-specific code
try_msr_calibrate_tsc() is currently Intel-specific, and should not
execute on any other vendor's parts.

This keeps in sync with Linux kernel commit:
  ba82683: x86/tsc_msr: Identify Intel-specific code

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-01 20:17:02 +08:00
Bin Meng
d92e9c8d31 x86: tsc: Read all ratio bits from MSR_PLATFORM_INFO
Currently we read the tsc radio like this:

	ratio = (MSR_PLATFORM_INFO >> 8) & 0x1f;

Thus we get bit 8-12 of MSR_PLATFORM_INFO, however according to the
Intel manual, the ratio bits are bit 8-15.

Fix this problem by masking 0xff instead.

This keeps in sync with Linux kernel commit:
  886123f: x86/tsc: Read all ratio bits from MSR_PLATFORM_INFO

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-01 20:17:02 +08:00
Simon Glass
f5b5719cdf dm: core: Update lists_bind_fdt() to use ofnode
Adjust this function to use an ofnode instead of an offset, so it can be
used with livetree. This involves updating all callers.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 07:03:08 -06:00
Simon Glass
da409ccc4a dm: core: Replace of_offset with accessor (part 2)
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 <sjg@chromium.org>
2017-06-01 07:03:04 -06:00
Simon Glass
a821c4af79 dm: Rename dev_addr..() functions
These support the flat device tree. We want to use the dev_read_..()
prefix for functions that support both flat tree and live tree. So rename
the existing functions to avoid confusion.

In the end we will have:

   1. dev_read_addr...()    - works on devices, supports flat/live tree
   2. devfdt_get_addr...()  - current functions, flat tree only
   3. of_get_address() etc. - new functions, live tree only

All drivers will be written to use 1. That function will in turn call
either 2 or 3 depending on whether the flat or live tree is in use.

Note this involves changing some dead code - the imx_lpi2c.c file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 07:03:01 -06:00
rick
b841b6e946 nds32: Support AE3XX platform.
Support Andestech AE3xx platform: serial, timer device tree flow.

Signed-off-by: rick <rick@andestech.com>
2017-05-22 14:05:46 +08:00
rick
f5076f8698 nds32: Support AG101P timer DM.
Support AG101P timer device tree flow.

Signed-off-by: rick <rick@andestech.com>
2017-05-22 14:05:40 +08:00
Vlad Zakharov
ad9b5f77df drivers: timer: Introduce ARC timer driver
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 <vzakhar@synopsys.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-03-24 14:20:55 +03:00
Patrice Chotard
347cb2edf9 STiH410: Add STi timer driver
Add ARM global timer based timer

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-03-14 20:40:18 -04:00
Simon Glass
e160f7d430 dm: core: Replace of_offset with accessor
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 <sjg@chromium.org>
2017-02-08 06:12:14 -07:00
maxims@google.com
4697abea62 aspeed: Add drivers common to all Aspeed SoCs
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 <sjg@chromium.org>
2017-01-28 14:04:27 -05:00
Zakharov Vlad
a5acafb255 timer: Support clocks via phandle
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 <vzakhar@synopsys.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-12-27 11:24:10 -05:00
Tom Rini
88033d737d Merge git://git.denx.de/u-boot-dm 2016-03-14 19:21:44 -04:00
Lokesh Vutla
871ca263ab dm: omap_timer: Fix conversion of address to a pointer
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 167efe01bc ("dm: ns16550: Use an address
instead of a pointer for the uart base")

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-03-14 19:18:45 -04:00
Simon Glass
3f603cbbb8 dm: Use uclass_first_device_err() where it is useful
Use this new function in places where it simplifies the code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-03-14 15:34:50 -06:00
Simon Glass
01476eaf07 sandbox: timer: Support the early timer
Add support for the early timer so we can use tracing with sandbox again.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-02-26 08:53:10 -07:00
Simon Glass
c95fec3192 timer: Provide an early timer
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 <sjg@chromium.org>
2016-02-26 08:53:10 -07:00
Simon Glass
4f051824b5 timer: Support tracing fully
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 <sjg@chromium.org>
2016-02-26 08:53:10 -07:00