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ARMv8's generic timer[1] picks up it's graycode from GTC. However,
the frequency of the GTC is supposed to be programmed in CNTFID0[2]
register prior to enabling the GTC in CNTCR[3] register.
In K3 architecture, GTC provides a central time to many parts of the
SoC including graycode to the generic timer in the ARMv8 subsystem.
However, due to the central nature and the need to enable the counter
early in the boot process, the R5 based u-boot enables GTC and
programs it's frequency based on central needs of the system. This
may not be a constant 200MHz based on the system. The bootloader is
supposed to program the FID0 register with the correct frequency it
has sourced for GTC from the central system controller OR from PLLs
as appropriate, and TF-A is supposed[4] to use that as the frequency for
it's local timer.
Currently we are programming just the CNTCR[3] register to enable the
GTC, however we dont let TF-A know the frequency that GTC is actually
running at. A mismatch in programmed frequency and what we program for
generic timer will, as we can imagine, all kind of weird mayhem.
So, program the CNTFID0 register with the clock frequency. Note:
assigned-clock-rates should have set the clock frequency, so the only
operation we need to explicitly do is to retrieve the frequency and
program it in FID0 register.
Since the valid in K3 for GTC clock frequencies are < U32_MAX, we can
just cast the ulong and continue.
[1] https://developer.arm.com/documentation/100095/0002/generic-timer/generic-timer-register-summary/aarch64-generic-timer-register-summary
[2] https://developer.arm.com/docs/ddi0595/h/external-system-registers/cntfid0
[3] https://developer.arm.com/docs/ddi0595/h/external-system-registers/cntcr
[4] https://github.com/ARM-software/arm-trusted-firmware/commit/6a22d9ea3c7fa28d053d3ba264b49b7396a86f9e
Signed-off-by: Nishanth Menon <nm@ti.com>
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Add drivers/video/ti/ folder and move all TI's code in this folder for
better maintenance.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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The schedule for deprecating the features of the pre-driver-model puts
2019.17 as the deadline for the video subsystem. Furthermore, the latest
patches applied to the am335x-fb.c module have decreased the amount of
code shared with the pre-driver-model implementation. Splitting the two
implementations into two modules improves the readability of the code
and will make it easier to drop the pre-driver-model code.
I have not created a header file with the data structures and the
constants for accessing the LCD controller registers, but I preferred to
keep them inside the two c modules. This is a code replication until the
pre-driver-model version is dropped.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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The patch configures the display DPLL using the functions provided by
the driver model API for the clock. The device tree contains everything
needed to get the DPLL clock. The round rate function developed for
calculating the DPLL multiplier and divisor and the platform routines
for accessing the DPLL registers are removed from the LCD driver code
because they are implemented inside the DPLL clock driver.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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The previous version of am335x-fb.c contained the functionalities of two
drivers that this patch has split. It was a video type driver that used
the same registration compatible string that now registers a panel type
driver. The proof of this is that two compatible strings were referred
to within the same driver.
There are now two drivers, each with its own compatible string,
functions and API.
Furthermore, the panel driver, in addition to decoding the display
timings, is now also able to manage the backlight.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
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The patch adds a function to get display timings from the device tree
node attached to the device.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
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The TI PWMSS driver is a simple bus driver for providing clock and power
management for the PWM peripherals on TI AM33xx SoCs, namely eCAP,
eHRPWM and eQEP.
For DT binding details see Linux doc:
- Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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Enhanced high resolution PWM module (EHRPWM) hardware can be used to
generate PWM output over 2 channels. This commit adds PWM driver support
for EHRPWM device present on AM33XX SOC.
The code is based on the drivers/pwm/pwm-tiehrpwm.c driver of the Linux
kernel version 5.9-rc7.
For DT binding details see:
- Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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The prescaler (PTV) setting must be taken into account even when the
timer input clock frequency has been set.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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The __of_translate_address routine translates an address from the
device tree into a CPU physical address. A note in the description of
the routine explains that the crossing of any level with
since inherited from IBM. This does not happen for Texas Instruments, or
at least for the beaglebone device tree. Without this patch, in fact,
the translation into physical addresses of the registers contained in the
am33xx-clocks.dtsi nodes would not be possible. They all have a parent
with #size-cells = <0>.
The CONFIG_OF_TRANSLATE_ZERO_SIZE_CELLS symbol makes translation
possible even in the case of crossing levels with #size-cells = <0>.
The patch acts conservatively on address translation, except for
removing a check within the of_translate_one function in the
drivers/core/of_addr.c file:
+
ranges = of_get_property(parent, rprop, &rlen);
- if (ranges == NULL && !of_empty_ranges_quirk(parent)) {
- debug("no ranges; cannot translate\n");
- return 1;
- }
if (ranges == NULL || rlen == 0) {
offset = of_read_number(addr, na);
memset(addr, 0, pna * 4);
debug("empty ranges; 1:1 translation\n");
There are two reasons:
1 The function of_empty_ranges_quirk always returns false, invalidating
the following if statement in case of null ranges. Therefore one of
the two checks is useless.
2 The implementation of the of_translate_one function found in the
common/fdt_support.c file has removed this check while keeping the one
about the 1:1 translation.
The patch adds a test and modifies a check for the correctness of an
address in the case of enabling translation also for zero size cells.
The added test checks translations of addresses generated by nodes of
a device tree similar to those you can find in the files am33xx.dtsi
and am33xx-clocks.dtsi for which the patch was created.
The patch was also tested on a beaglebone black board. The addresses
generated for the registers of the loaded drivers are those specified
by the AM335x reference manual.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Tested-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
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The patch moves the clk-ti-sci.c file to the 'ti' directory along with
all the other TI's drivers, and renames it clk-sci.c.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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This minimal driver is only used to bind child devices.
For DT binding details see Linux doc:
- Documentation/devicetree/bindings/arm/omap/prcm.txt
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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Until now the clkctrl clocks have been enabled/disabled through platform
routines. Thanks to this patch they can be enabled and configured directly
by the probed devices that need to use them.
For DT binding details see Linux doc:
- Documentation/devicetree/bindings/clock/ti-clkctrl.txt
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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The patch adds support for TI gate clock binding. The code is based on
the drivers/clk/ti/gate.c driver of the Linux kernel version 5.9-rc7.
For DT binding details see:
- Documentation/devicetree/bindings/clock/ti/gate.txt
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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The patch adds support for TI divider clock binding. The driver uses
routines provided by the common clock framework (ccf).
The code is based on the drivers/clk/ti/divider.c driver of the Linux
kernel version 5.9-rc7.
For DT binding details see:
- Documentation/devicetree/bindings/clock/ti/divider.txt
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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The digital phase-locked loop (DPLL) provides all interface clocks and
functional clocks to the processor of the AM33xx device. The AM33xx
device integrates five different DPLLs:
* Core DPLL
* Per DPLL
* LCD DPLL
* DDR DPLL
* MPU DPLL
The patch adds support for the compatible strings:
* "ti,am3-dpll-core-clock"
* "ti,am3-dpll-no-gate-clock"
* "ti,am3-dpll-no-gate-j-type-clock"
* "ti,am3-dpll-x2-clock"
The code is loosely based on the drivers/clk/ti/dpll.c drivers of the
Linux kernel version 5.9-rc7.
For DT binding details see:
- Documentation/devicetree/bindings/clock/ti/dpll.txt
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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The driver manages a register-mapped multiplexer with multiple input
clock signals or parents, one of which can be selected as output. It
uses routines provided by the common clock framework (ccf).
The code is based on the drivers/clk/ti/mux.c driver of the Linux
kernel version 5.9-rc7.
For DT binding details see:
- Documentation/devicetree/bindings/clock/ti/mux.txt
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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It returns the rate which will be set if you ask clk_set_rate() to set
that rate. It provides a way to query exactly what rate you'll get if
you call clk_set_rate() with that same argument.
So essentially, clk_round_rate() and clk_set_rate() are equivalent
except the former does not modify the clock hardware in any way.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
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We can handle the sysc interconnect target module in a generic way for
many TI SoCs. Initially let's just enable domain clocks before the
children are probed.
The code is loosely based on the drivers/bus/ti-sysc.c of the Linux
kernel version 5.9-rc7.
For DT binding details see:
- Documentation/devicetree/bindings/bus/ti-sysc.txt
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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Export routines that can be used by other drivers avoiding duplicating
code.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
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McSPI IP provides per CS specific speed and mode selection. Therefore it
is possible to apply these settings only after CS is known. But
set_speed and set_mode can be called without bus being claimed, this
would lead driver to set up wrong CS (or previously used CS).
Fix this by apply set_speed and set_mode only if bus is already claimed.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Tested-by: Miquel Raynal <miquel.raynal@bootlin.com>
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struct ti_qspi_priv->max_hz is declared as unsigned int, so the following
error path check will always be false, even when "spi-max-frequency"
property is invalid/missing:
priv->max_hz = fdtdec_get_int(blob, node, "spi-max-frequency", -1);
if (priv->max_hz < 0) {
...
}
Replace the fdtdec call with dev_read_u32_default() and use 0 as the
default value. Error out if max_hz is zero.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
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The value of input pin for bank > 0 is always 0 for input subcommand.
The reason is that gpio_bank variable is computed only for invert and
output subcommands (it depends on number of arguments). The default
value of zero causes to shift the mask away for banks > 0.
Please note that info subcommand works as expected, because the input
pin values are accessed differently.
Fixes: 61c1775f16ed ("gpio: tca642x: Add the tca642x gpio expander driver")
Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Tomas Novotny <tomas@novotny.cz>
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https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze into next
Xilinx changes for v2021.04
arm64:
- DT updates
microblaze:
- Add support for NOR device support
spi:
- Fix unaligned data write issue
nand:
- Minor code change
xilinx:
- Fru fix in limit calculation
- Fill git repo link for all Xilinx boards
video:
- Add support for seps525 spi display
tools:
- Minor Vitis file support
cmd/common
- Minor code indentation fixes
serial:
- Uartlite debug uart initialization fix
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Driver model: make some udevice fields private
Driver model: Rename U_BOOT_DEVICE et al.
dtoc: Tidy up and add more tests
ns16550 code clean-up
x86 and sandbox minor fixes for of-platdata
dtoc prepration for adding build-time instantiation
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Prepare v2021.01-rc5
Signed-off-by: Tom Rini <trini@konsulko.com>
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This has not been needed since parent information was added and we started
using indicies for references to other drivers instead of pointers. It was
kept around in the expectation that it might be needed later.
However with the latest updates, it doesn't seem likely that we'll need
this in the foreseeable future.
Drop dm_populate_phandle_data() from dtoc and driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
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We use the U_BOOT_ prefix (i.e. U_BOOT_DRIVER) to declare a driver but
in every other case we just use DM_. Update the alias macros to use the
DM_ prefix.
We could perhaps rename U_BOOT_DRIVER() to DM_DRIVER(), but this macro
is widely used and there is at least some benefit to indicating it us a
U-Boot driver, particularly for code ported from Linux. So for now, let's
keep that name.
Signed-off-by: Simon Glass <sjg@chromium.org>
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In the spirit of using the same base name for all of these related macros,
rename this to have the operation at the end. This is not widely used so
the impact is fairly small.
Signed-off-by: Simon Glass <sjg@chromium.org>
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The current macro is a misnomer since it does not declare a device
directly. Instead, it declares driver_info record which U-Boot uses at
runtime to create a device.
The distinction seems somewhat minor most of the time, but is becomes
quite confusing when we actually want to declare a device, with
of-platdata. We are left trying to distinguish between a device which
isn't actually device, and a device that is (perhaps an 'instance'?)
It seems better to rename this macro to describe what it actually is. The
macros is not widely used, since boards should use devicetree to declare
devices.
Rename it to U_BOOT_DRVINFO(), which indicates clearly that this is
declaring a new driver_info record, not a device.
Signed-off-by: Simon Glass <sjg@chromium.org>
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It is useful to see the error code when this fails. Add logging for this
function.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present the uclass list head is in global_data. This is convenient
but with the new of-platdata we need the list head to be declared by
the generated code.
Change this over to be a pointer. Provide a 'static' version in
global_data to retain the current behaviour.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Move the code related to scanning for devices to bind, into a new
function. This will make it easier to skip this step with the new
of-platdata improvements.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present ofnode is present in the device even if it is never used. With
of-platdata this field is not used, so can be removed. In preparation for
this, change the access to go through inline functions.
Signed-off-by: Simon Glass <sjg@chromium.org>
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We have two functions which do the same thing. Standardise on
dev_has_ofnode() since there is no such thing as an 'invalid' ofnode in
normal operation: it is either null or missing.
Also move the functions into one place.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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We use 'ofnode' rather than 'of_node' in U-Boot. Rename this function to
fit.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present flags are stored as part of the device. In preparation for
storing them separately, change the access to go through inline functions.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Now that the sequence-numbering migration is complete, rename this member
back to seq_, adding an underscore to indicate it is internal to driver
model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Add a new function to handle the allocation of private/platform data for
a device. This will make it easier to skip this feature when using the new
of-platdata.
Signed-off-by: Simon Glass <sjg@chromium.org>
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With the new of-platdata, these need to be available to dt_platdata.c
so must be in header files. Move them and add the dtd struct too.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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With the new of-platdata, these need to be available to dt_platdata.c
so must be in header files. Move them.
Signed-off-by: Simon Glass <sjg@chromium.org>
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The #define of one struct to another has been around for a while. It
confuses dtoc and makes it think that struct spi_flash does not exist.
Make a few changes to improve things while we wait for migration to be
completed:
- Move the 'struct spi_flash' to column 1 so dtoc scans it
- Remove the #define when compiling dt-platdata.c
- Update the strange mtd_get/set_of_node() functions
- Use struct spi_nor in the drivers, so dtoc sees the correct struct
Signed-off-by: Simon Glass <sjg@chromium.org>
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This code is a bit odd in that it only reads and updates the livetree
version of the device ofnode. This means it won't work with flattree.
Update the code to work as it was presumably intended.
Signed-off-by: Simon Glass <sjg@chromium.org>
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With the new of-platdata, these need to be available to dt_platdata.c
so must be in header files. Move them.
Signed-off-by: Simon Glass <sjg@chromium.org>
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With the new of-platdata, these need to be available to dt_platdata.c
so must be in header files. Move them.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present this driver does not have a compatible string. For it to be
used with the coming of-platadata, it must have one. Update it
accordingly.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Move this struct into a header file so that dtoc can include it in its
dt-platdata.c file.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Move this struct into a header file so that dtoc can include it in its
dt-platdata.c file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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These errors are only really for development purposes. Drop them to reduce
the size of TPL. The error numbers are still reported.
This reduces the TPL binary size on coral by about 160 bytes.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Update various drivers to use of_match_ptr() and to avoid including debug
strings in TPL. Omit the WiFi driver entirely, since it is not used in
TPL.
This reduces the TPL binary size by about 608 bytes.
Signed-off-by: Simon Glass <sjg@chromium.org>
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