If the flag STM32MP_RECONFIGURE_CONSOLE is set in BL32, the UART init
should be skipped if the UART clock is set to zero. This will be used
when configuring the default console, after an early console has been
configured.
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: Icbc640c7bdd6342f9c3ec1586a0d0c64127b18b8
Add the pincontrol configuration and clock enable in UART driver
with information found in the device tree.
This patch avoids an issue on STM32MP13x platform because the UART
configuration is reset by the ROM code for UART serial boot
(STM32MP_UART_PROGRAMMER=1).
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: I575fd0e1026b857059abcfd4a3166eb3a239e1fd
Move the definition of DT_UART_COMPAT in stm32mp1_def.h to be used
in several files.
Change-Id: I74d0350bcd971df9b15697f2b9ec04061d6a7656
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
The parameter over_sampling of stm32_uart_init_s is not required
as it can be computed dynamically from clock rate of the serial
device and the requested baudrate.
Oversampling by 8 is allowed only for higher speed
(up to clock_rate / 8) to reduce the maximum receiver tolerance
to clock deviation.
This patch update the driver, the serial init struct and the
only user, the stm32cubeprogrammer over uart support.
Change-Id: I422731089730a288defeb7fa49886db65d0902b2
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Instead of using hard-coded values in stm32_sdmmc2_read() function,
use a defined SDMMC_FIFO_SIZE, which is 64 on STM32MP1.
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: I1ace0a28fbddae474379f0187371b9c360ceb7b3
Although not recommended, the reset property could be made optional.
This way the driver will probe even if no reset property is provided
in an sdmmc node in DT. This reset is already optional in Linux.
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: I6e63ff00118d9497f505d6379982334dd62686ca
For SD-cards, CMD6 is used to switch functions, like setting high speed
mode. As it has another meaning for eMMC, and may not work on standard
capacity SD-cards, it must be checked with MMC_IS_SD_HC flag.
As ACMD6 is also used, and will have the same index, a check on
CMD/ACMD commands is done: a boolean is stored depending on previous
command. It is set to true if CMD55 is issued, for other commands
it is set to false.
Change-Id: I6c2b9c7637656f858601ec075de1cb5f57af271a
Signed-off-by: Yann Gautier <yann.gautier@st.com>
The ETZPC peripheral is always secure, and has a fixed address,
given by STM32MP1_ETZPC_BASE. This is then not needed to check
that in DT.
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: Ifb0779abaf830e1e5a469c72181c2b2726fb47b5
Clock name is not used and can be removed for code size optimization.
Change-Id: I75f6a1828e4374004e31a7ce13fa6885c52bbac3
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
The divn_max field is unused, remove it.
Change-Id: I971912bcc035f16963d98dfa88782c8aed4415f2
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Add braces to correct MISRA C2012 15.6 warning:
The body of an iteration-statement or a selection-statement shall be a
compound-statement.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: If26f3732d31df11bf389a16298ec9e9d8a4a2279
The function clk_oscillator_wait_ready() was wrongly checking the set
bit and not the ready bit. Correct that by using osc_data->gate_rdy_id
when calling _clk_stm32_gate_wait_ready().
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: Ida58f14d7f0f326b580ae24b98d6b9f592d2d711
Waiting for SR_BUSY bit when receiving a new command is not needed.
SR_BUSY bit is already managed in the previous command treatment.
Change-Id: I736e8488d354cb165ae765022d864cca1dbdc9ee
Signed-off-by: Christophe Kerello <christophe.kerello@foss.st.com>
Currently, SR_TCF flag is checked in case there is data, this criteria
is not correct.
SR_TCF flags is set when programmed number of bytes have been
transferred to the memory device ("bytes" comprised command and data
send to the SPI device).
So even if there is no data, we must check SR_TCF flag.
Change-Id: I99c4145e639c1b842feb3690dd78329179c18132
Signed-off-by: Christophe Kerello <christophe.kerello@foss.st.com>
The fdt_getprop() function sets the length to -1 if the property is not
found. We should then not use it later in stm32_clk_parse_fdt_by_name()
in that case. Directly set *nb to 0U and return 0 if the property is not
found.
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: I19c5c953f392cdc768e0b1f3f240fc99a73a049c
This issue was found by Coverity (CID 376885). The _clk_stm32_get_parent()
return shouldn't be negative. Return the error in this case.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I91eff7e99fcdac9a258100b163fd9b040a9bd2c0
Put DT_SDMMC2_COMPAT under #ifndef. Keep the default value if it is not
defined in platform code.
Change-Id: I611baaf1fc622d33e655ee2c78d9c287baaa6a67
Signed-off-by: Yann Gautier <yann.gautier@st.com>
This new function pmic_voltages_init() is used to set the minimum value
for STM32MP13 VDDCPU and VDDCORE regulators. This value is retrieved
from device tree.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: Ibbe237cb5dccc1fddf92e07ffd3955048ff82075
Add new clock driver for STM32MP13. Split the include file to manage
either STM32MP13 or STM32MP15.
Change-Id: Ia568cd12b1d5538809204f0fd2224d51e5d1e985
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
* GPIO: On STM32MP13, there are no banks GPIOJ, GPIOK and GPIOZ.
* STM32MP13 is a single Cortex-A7 CPU: remove reset from MPU1
and reset from MCU traces
* There is no MCU on STM32MP13. Put MCU security management
under STM32MP15 flag.
* The authentication feature is not supported yet on STM32MP13,
put the code under SPM32MP15 flag.
* On STM32MP13, the monotonic counter is managed in ROM code, keep
the monotonic counter update just for STM32MP15.
* SYSCFG: put registers not present on STM32MP13 under STM32MP15
flag, as the code that manages them.
* PMIC: use ldo3 during DDR configuration only for STM32MP15
* Reset UART pins on USB boot is no more required.
Change-Id: Iceba59484a9bb02828fe7e99f3ecafe69c837bc7
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
The static was found by sparse tool:
drivers/st/pmic/stm32mp_pmic.c:456:18: warning: symbol 'pmic_ops'
was not declared. Should it be static?
The const was also missing.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: Ibb5cfaf67ac980bf0af27712a95dbef05b617c25
UART oversampling by 8 allows higher baud rates for UART. This is
required when (UART freq / baudrate) <= 16. In this case the OVER8 bit
needs to be enabled in CR1 register. And the BRR register management is
different:
USARTDIV = (2 * UART freq / baudrate) (with div round nearest)
BRR[15:4] = USARTDIV[15:4]
BRR[3] = 0
BRR[2:0] = USARTDIV[3:0] >> 1
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: Ia3fbeeb73a36a4dc485c7ba428c531e65b6f6c09
To get the nearest divisor for BRR register, we use:
Divisor = (Uart clock + (baudrate / 2)) / baudrate
But lsl was wrongly used instead of lsr to have the division by 2.
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: Iedcc3ccdb4cf8268012e82a66df2a9ec48fc1d79
The issue was found by Coverity:
CID 376582: (UNINIT)
Using uninitialized value "*pllcfg[_PLL4]" when calling
"stm32mp1_check_pll_conf".
CID 376582: (UNINIT)
Using uninitialized value "*pllcfg[_PLL3]" when calling
"stm32mp1_check_pll_conf".
Check PLL configs are valid before using pllcfg.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I49de849eaf451d0c165a8eb8555112a0a4140bbc
With gcc-11, the -Wformat-signedness warning complains about enum values
that should be printed as unsigned values. Change %d to %u for several
lines in the clock driver.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: Ia2d24e6feef5e852e0a6bfaa1286fe605f9a16b7
Replace %d with %u in log, to avoid warning when
-Wformat-signedness is enabled.
Change-Id: Ied5823520181f225ae09bd164e2e52e9a7692c60
Signed-off-by: Yann Gautier <yann.gautier@st.com>
As cmd_idx is unsigned, we have to use %u and not %d.
This avoids warning when -Wformat-signedness is enabled.
Change-Id: I6954a8c939f3fb47dbb2c6db56a1909565af078b
Signed-off-by: Yann Gautier <yann.gautier@st.com>
As page is unsigned, we should use %u and not %d.
Find with -Wformat-signedness.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I7205971ee5e83163e4fe47d33bb9e90832b59ae0
From the new binding, the RCC become secured based on the new
compatible. This must be done only from the secure OS initialisation.
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Change-Id: I7f0a62f22bfcca638ddaefc9563df00f89f01653
At boot, the devices under ETZPC control are secured, so should be
their GPIOs. As securable GPIOs are secured by default, keep the reset
values in BL2.
Change-Id: I9e560d936f8e8fda0f96f6299bb0c3b35ba9b71f
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Allow to set a gpio in output mode from the device tree.
Signed-off-by: Fabien Dessenne <fabien.dessenne@foss.st.com>
Change-Id: Ic483324bc5fe916a60df05f74706bd1da4d08aa5
No functional, change, but some improvements:
- Declare set_gpio() as static (only called locally)
- Handle the type ('open-drain') property independently from the
mode one.
- Replace mmio_clrbits_32() + mmio_setbits_32() with
mmio_clrsetbits_32().
- Add a missing log
- Add missing U() in macro definitions
Signed-off-by: Fabien Dessenne <fabien.dessenne@foss.st.com>
Change-Id: I1a79609609ac8e8001127ebefdb81def573f76fa
Rename driver file to BSEC2.
Split header file in IP and feature parts.
Add functions to access BSEC scratch register.
Several corrections and improvements.
Probe the driver earlier, especially to check debug features.
Change-Id: I1981536398d598d67a19d2d7766dacc18de72ec1
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Add support for regulator-always-on at BL2 level as it was supported
before using the regulator framework.
Signed-off-by: Pascal Paillet <p.paillet@st.com>
Change-Id: Idb2f4ddc2fdd4e0d31fb33da87c84618aa2e5135
Some clocks are only required in BL2, like boot devices clocks:
FMC, QSPI.
Some clocks are only used in BL32: Timers, devices that need special
care for independent reset.
Change-Id: Id4ba99afeea5095f419a86f7dc6423192c628d82
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Yann Gautier <yann.gautier@st.com>
This change removes reference counting support in clock gating
implementation for clocks that rely on non-secure only RCC resources.
As RCC registers are accessed straight by non-secure world for these
clocks, secure world cannot safely store the clock state and even
disabling such clock from secure world can jeopardize the non-secure
world clock management framework and drivers.
As a consequence, for such clocks, stm32_clock_enable() forces the clock
ON without any increment of a refcount and stm32_clock_disable() does
not disable the clock.
Change-Id: I0cc159b36a25dbc8676f05edf2668ae63c640537
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Array stm32mp1_clk_gate[] defines the clock resources. This change
add a secure attribute to the clock: secure upon RCC[TZEN] (SEC),
secure upon RCC[TZEN] and RCC[MCKPROT] (MKP) or always accessible
from non-secure (N_S).
At init, lookup clock tree to check if any of the secure clocks
is derived from PLL3 in which case PLL3 shall be secure.
Note that this change does not grow byte size of stm32mp1_clk_gate[].
Change-Id: I933d8a30007f3c72f755aa1ef6d7e6bcfabbfa9e
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Rework the internal functions __stm32mp1_clk_enable/disable to check for
reference count instead of secure status for a clock.
Some functions now unused can be removed.
Change-Id: Ie4359110d7144229f85c961dcd5a019222c3fd25
Signed-off-by: Yann Gautier <yann.gautier@st.com>
In a later patch, the stm32mp1_def.h will be reworked. The inclusion
of common/debug.h may not be done there through another included file.
Add this header inclusion in the files that need it.
Change-Id: I83687f7910032ca38c0856796580a650e1e41a68
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Replace wrong %d with the correct types.
This issue was found with the compilation flag:
-Wformat-signedness
Change-Id: Iec3817a245f964ce444b59561b777ce06c51a60a
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Instead of transmitting an 'enum stm32mp_osc_id', just send
directly the clock name with a 'const char *'
Change-Id: I866b05cbb1685a9b9f80e63dcd5ba7b1d35fc932
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
In case of programmer mode, the bootrom manages to auto-detect
HSE clock configuration. In order to detect a bad device tree
setting in BL2, it will crash during programming if the configuration
is not aligned with the auto-detection.
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Change-Id: I230697695745d6282d14b1ebfa6e4c4caa0cd8e2
Support "disabled" status for oscillator in device tree.
At boot time, the clock tree initialization performs the following
tasks:
- enabling of the oscillators present in the device tree and not
disabled,
- disabling of the HSI oscillator if the node is absent or disabled
(always activated by bootROM).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Change-Id: I176276022334f3d97ba0250b54062f0ae970e239
Add a function to get PLL settings from DT:
"cfg" property is mandatory, an error is generated if not found.
"frac" is optional, default value is returned if not found.
"csg" is optional too, a boolean value indicates if it has been
found, and its value is updated.
Store each PLL node validity information, this avoids parsing DT
several times.
Change-Id: I039466fbe1e67d160f7112814e7bb63b661804d0
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
These basic tests are generic and should be used independently of the
driver, depending on the plaftorm characteristics.
Change-Id: I38161b659ef2a23fd30a56e1c9b1bd98461a2fe4
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@foss.st.com>
