J722S maps DDR above the first 2 GB at 0x8_8000_0000, out of reach of the
32-bit R5F, while a 64-bit Linux peer posts virtio buffers there.
Dedicates RAT region 0 as a 16 MB window at 0xFE000000. am67_rat_map() re-aims
it and returns a pointer plus the bytes left before the edge, so callers can
split copies that straddle it.
The window is Non-cacheable, since it retargets at runtime and cached lines
would alias across physical blocks. A mapping is valid only until the next
call; the sole user, vhost-net, is serialised on the netdev work thread.
Assisted-by: Claude Code:claude-fable-5
Signed-off-by: Ulaş Sertan Kemeç <sertan.usk@gmail.com>
Connects the R5F to Linux remoteproc over the NAVSS mailbox.
The mailbox ISR only drains the FIFO and acknowledges; OpenAMP delivery is
deferred to HPWORK, because the rpmsg rx path takes mutexes and allocates.
The resource table publishes two vdevs, rpmsg and virtio-net, leaving every
vring address FW_RSC_ADDR_ANY: Linux allocates them from the R5F DMA pool and
rejects fixed addresses outside it.
Shared IPC memory is mapped Non-cacheable, since the R5F is not coherent with
the A53 and cached mappings leave NuttX reading stale vring state.
Also drops the duplicate arm_mpu.c from CHIP_CSRCS.
Assisted-by: Claude Code:claude-fable-5
Signed-off-by: Ulaş Sertan Kemeç <sertan.usk@gmail.com>
Add STM32_ETH_TIMESTAMP_RX for the STM32H7, as the one of the legacy
STM32 that provides the timestamp of the frames received.
Timestamp the PTP version 2 messages, over Ethernet and over UDP, except
for the announce, management and signaling messages. The MAC writes the
timestamp in a context descriptor after the last descriptor of the frame.
The driver reads it before giving the frame to the network stack and
passes it in d_rxtime, in the time of the system time of the MAC, the same
as /dev/ptp0. A frame that is not timestamped has a time of zero.
The timestamp goes over the address of the buffer of the context
descriptor, and the code that dropped the context descriptors used a
pointer that was never set. Keep the address of the buffer of each RX
descriptor, and restore it when a context descriptor is given back.
The timestamps of the PTP frames of a grandmaster clock were checked on
hardware against the system time of the MAC, and were within the delay of
the reads.
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Assisted-by: Claude:claude-sonnet-5
The MAC has a system time that is the base of the PTP hardware
timestamps, but the driver never started it, and STM32_ETH_PTP only
printed a warning.
Add the registers of the timestamp unit and start the system time with
the fine update method and the digital rollover, so that the nanoseconds
count up to 10^9. The increment is 2 * 10^9 / HCLK ns, and the addend
makes the update rate half of HCLK, which leaves room to trim the
frequency in both directions. The time starts at zero right after the MAC
reset, not with the MAC configuration, so it does not depend on the PHY
having a link. The reset clears it, so it starts again each time the
interface goes up.
With STM32_ETH_PTP_GPIO, start the pulse-per-second output as a pulse
train with a period of one second and a width of half of it, at the whole
seconds of the system time. The fixed frequency mode of the MAC gives a
pulse too short to be seen, so the flexible mode is used. The interrupt
of the timestamp unit is not enabled in the MAC: it is set each time the
target time of the PPS output is reached and is cleared by reading
MACTSSR, which the interrupt handler does not do, so it would stay
pending and keep the handler running until the network stops.
Register /dev/ptp0 when CONFIG_PTP_CLOCK is set, so that a PTP daemon can
read and set the system time and correct its frequency and its phase.
The frequency is corrected by changing the addend, by up to 50% each way.
A step of the time is added or subtracted with the update register; with
the digital rollover a subtraction is programmed with the negated seconds
and with 10^9 minus the nanoseconds. The pulse train counts by itself, so
it does not follow a step of the system time and would be displaced by the
same amount: after the time is set or stepped, it is started again at the
next whole second.
With HCLK at 200 MHz the system time advanced 10.0018 s while a host
clock advanced 10.002 s, and the pulse train was seen on the pin. Reading,
setting, steps of +0.5 s and -1.25 s and a change of 100 ppm were done
through /dev/ptp0 on hardware, and the edges of the PPS output stayed at
the whole seconds of the system time.
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Assisted-by: Claude:claude-sonnet-5
The driver configured the pulse-per-second pin whenever STM32_ETH_PTP
was set, so a board that uses the timestamp unit without the pin still
had to define GPIO_ETH_PPS_OUT, and the pin was taken away from other
uses. The STM32F4 driver configures the pin with STM32_ETH_PTP_GPIO,
the option meant for it, but that option could not be selected on the
STM32H7, because it depended on the legacy STM32 families.
Configure the pin only with STM32_ETH_PTP_GPIO, and allow that option
on the STM32H7 and STM32H5.
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Assisted-by: Claude:claude-sonnet-5
- Under CONFIG_NET_PROMISCUOUS, forward all control frames
(ETH_MACFFR_PCF_ALL) instead of only non-PAUSE ones, so link-local
PTP multicast reaches the DMA.
- Move ptp_to_timespec() above its first user so the TX timestamp path
can call it.
- stm32_receive(): do not log frames already delivered to packet
sockets (PTP, IPv6) as "Dropped, Unknown type".
- stm32_txtstamp_flush(): clear io_conn before freeing the looped-back
IOB.
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Assisted-by: Claude:claude-sonnet-5
Implement hardware TX timestamping support for STM32 Ethernet MAC
(stm32_eth_m3m4_v1.c) following the upstream SO_TIMESTAMPING loopback
architecture (PR #20161).
When an outgoing packet is flagged with SO_TIMESTAMPING (dev->d_iob->io_conn != NULL):
- Clone the IOB and hold a reference in priv->txmeta[txindex]
- Set ETH_TDES0_TTSE on the transmit DMA descriptor
- On transmission completion (stm32_freeframe), retrieve the hardware
timestamp from TDES6/TDES7, convert to timespec via ptp_to_timespec(),
and enqueue the clone onto priv->txtstampq
- Deliver pending TX timestamp clones back to netdev RX path in stm32_receive
using pkt_input(), where net/pkt intercepts the frame and delivers it to
userspace via recvmsg(..., MSG_ERRQUEUE)
- Properly drain pending queues and clones on interface down (stm32_ifdown)
Assisted-by: Gemini:gemini-3.8-pro
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
The Drop Transmit Status field of the MTL operation mode register is
bit 1, but it was defined as bit 0. The driver does not use it.
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Assisted-by: Claude:claude-sonnet-5
Implements the pthread_sigqueue Linux extension to pthreads. Follows a
similar implementation to sigqueue, except targeting a specific thread
through nxsig_dispatch.
Signed-off-by: Matteo Golin <matteo.golin@gmail.com>
The PHY was polled with nxsched_usleep(100) in a loop of 0x1998
iterations, so the time the link had to come up depended on the period
of the system tick. With the usual 10 ms tick that is about 65 s, but
with CONFIG_SCHED_TICKLESS and a 100 us tick it is about 0.65 s, shorter
than the auto-negotiation of the PHY (about 1.7 s on the board tested),
and the interface could not be brought up.
Poll every 10 ms and give the PHY up to 5 s, both for the link and for
the auto-negotiation to complete, whatever the tick.
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Assisted-by: Claude:claude-sonnet-5
The comment of stm32_eth_ptp_convert_rxtime() said that it converts to
CLOCK_REALTIME. Since the timestamp is delivered as the value of the
PTP counter of the MAC, which is the time base of /dev/ptp0, say
that.
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Assisted-by: Claude:claude-sonnet-5
up_addrenv_va_to_pa() is declared in include/nuttx/arch.h but implemented
only by armv7-a, so no arm64 port can map a virtual address to a physical
one. A driver whose device addresses memory physically has nothing to call.
The translation is asked of the MMU with AT S1E1R rather than walked in
software, so it answers for whatever is actually mapped: any granule size,
block or page, at any level, and it cannot drift from the tables in use.
PAR_EL1 is one register per CPU, so nothing may run between the translation
and reading the result. Interrupts are banked with it, so masking them
locally is sufficient and SMP needs nothing further.
Returns zero for an address that is not mapped for a privileged read, which
is what the declaration in arch.h specifies. Note this differs from the
armv7-a implementation, which returns the virtual address unchanged.
Signed-off-by: Royyan Zahir <royzah@gmail.com>
Implement lower-half PTP hardware clock operations (struct ptp_lowerhalf_s
and struct ptp_ops_s) in the STM32 Ethernet driver and register it with the
generic PTP clock framework (drivers/timers/ptp_clock.c) to expose /dev/ptp0.
Supported operations:
- adjfine: adjust PTP clock frequency in parts per billion (ppb)
- adjphase: adjust PTP clock phase via hardware TSSTU
- adjtime: shift PTP clock time by signed delta in nanoseconds
- gettime: atomic double-read of hardware timestamp registers
- settime: initialize hardware timestamp counter via TSSTI
- getres: return 1 ns clock resolution
Also fix a sign bug in stm32_eth_ptp_adjust() where uint64_t addend
promoted negative ppb adjustments to unsigned, corrupting frequency trim
for crystals running faster than nominal.
Follow-up to #20148 per review recommendation to use the standard POSIX
/dev/ptp0 character driver instead of custom socket ioctls.
Assisted-by: Gemini:gemini-3.8-pro
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
The MAC hardware counter is the PTP clock reference. Delivering its
raw timestamp directly (instead of synthesizing one against
CLOCK_REALTIME, which starts at an arbitrary boot-time phase) lets the
PTP daemon close the feedback loop and phase-lock the MAC counter -
and therefore the physical PPS output - to the master.
Assisted-by: Gemini:gemini-3.8-flash-medium
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Set ETH_MACCR_ROD unconditionally when configuring the MAC. In
half-duplex mode the MAC otherwise reflects every frame it transmits
back to its own receiver, flooding the receive path with our own
traffic right as a genuine reply arrives. The bit has no effect in
full-duplex (confirmed on our hardware: fduplex=1), so setting it
unconditionally is safe and changes nothing observable for boards
already running full-duplex.
The sibling stm32f7 driver has the same gap (ETH_MACCR_ROD cleared
but never set) and stm32h7's equivalent ETH_MACCR_DO bit has the same
issue; both are left out of scope here since only m3m4_v1 hardware
was available to validate against.
Assisted-by: Claude:claude-sonnet-5
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
(cherry picked from commit 41536cb8c9f5ff448864d2eb490b35aea7cdafcf)
stm32_receive() called pkt_input() before
stm32_eth_ptp_convert_rxtime(), so every packet handed to a packet
socket carried the previous frame's RX timestamp instead of its own
in dev->d_rxtime. Reorder so the timestamp is converted first.
Assisted-by: Claude:claude-sonnet-5
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
(cherry picked from commit 9bfa20da28da79a567e3b38cb127767cf9e03042)
In comp_ioctl(), propagate the return code of comp_enable() to caller so
failures (such as when the comparator CSR register is locked) return -EPERM.
Also call comp_lock_set() if the comparator was configured with locking,
handling cases where initialization was delayed.
Assisted-by: Gemini:gemini-3.8-pro
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Implement ao_ioctl in stm32_comp_m3m4_v2.c to handle ANIOC_COMP_ENABLE and
ANIOC_COMP_DISABLE commands. Also add CONFIG_STM32_COMP_INIT_DISABLED to
allow keeping the comparator disabled after driver initialization until
explicitly enabled.
Update nucleo-g431kb:comp defconfig to enable CONFIG_EXAMPLES_COMP and
set default DAC path for comparator ramp verification.
Assisted-by: Gemini:gemini-2.5-pro
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Add a function which can be called from M33 core on imx118x to start
executing on M7 core.
The function:
- Configures the M7 clock root
- Releases M7 from reset
- Asks the secure element to release the M7 (ENABLE_APC)
- Enables the M7 clock
The function is compiled in when a configuration flag
CONFIG_IMXRT_CM7_BOOT=y
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
- Add driver supporting the DMA3 and DMA4 in iMXRT118x chips. The driver is first copied
from imx93, and then changed just the relevant parts (function names, clocking and
irq handling) to match the imx118x configuration.
- Add the DMA channel numbering in hardware/rt118x/imxrt118x_dmamux.h from RM
by claude.
Assisted-by: Claude Code:claude-opus-4-7
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
Add a few !defined(CONFIG_ARCH_FAMILY_IMXRT118x) gates similar to 1176 to
buid the common drivers also for 118x variants.
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
- Move/make sure that ep0buf is in usb dma capable memory. Especially if
.data/.bss are in TCM, the buffers need to be placed in another section.
If the section .dmamemory doesn't exist, they will end up in .data like before
- change "#ifdef CONFIG_ARCH_FAMILY_IMXRT117x" into
"#if defined(CONFIG_ARCH_FAMILY_IMXRT117x) || defined(CONFIG_ARCH_FAMILY_IMXRT118x)"
- In imxrt_epcomplete dtd->buffer0 must NOT be used to compute the data buffer's
cache-maintenance address range. The hardware advances buffer0 (and its
"current offset" low-order bits) as the transfer progresses, so by completion
time it points *past* the start of the buffer (at start + xfer_len), not at
the buffer itself. Instead, use the original privreq->req.buf when the transfer
is complete.
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
- Small additions to existing drivers to support more UARTs
- Properly invalidate the cache over DMA RX buffer initially
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
- Add imxrt118x compatible IOMUX definitions, named as IOMUX_VER3. This is the
same IP as what is used for example for IMX9. Instead of directly copying the support
from imx9, pack the padconfig into the same 32-bit value used for GPIO for easy use.
- Add imxrt118x compatible rgpio driver. This is the same GPIO block as what has been used
in imx9. Instead of directly copying the support from IMX9, add pin muxing directly
into GPIO driver as well, to keep the usage compatible with existing IMXRT boards.
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
- Initialize the internal secure element, if configured
- Initialize the TRDC, if configured
- Disable the TCM enabling code when compiling for other than Cortex-M7 chip.
This needs to be skipped for M33 core on imx118x
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
iMXRT118x uses the same security element as the imx93. Just add iMXRT specific
register definitions and port over the driver code.
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
The trdc driver has been copied from arm64/imx93, and modified to fit imxrt118x.
The relevant register definitions have been generated by AI from the RM.
Assisted-by: Claude Code:claude-opus-4-7
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
Add IMXRT AONMIX register addresses and bit definitions in a separate header file
"imxrt118x_blkctrl.h".
The header is generated using AI from imxrt118x reference manual.
Assisted-by: Claude Code:claude-opus-4-7
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
Support reading the OCOTP via the shadow register on imxrt chips with integrated
ELE. On these chips, writing is done via ELE, this is not yet implemented.
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
Add register definitions for IMXRT118x Analog-Digital top level block.
Assisted-by: Claude Code:claude-opus-4-7
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
Port the ccm / clock configuration from iMX93 to iMXRT118x.
Register definitions are generated from RM using AI
Assisted-by: Claude Code:claude-opus-4-7
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
Add interrupt numbering for imxrt118x in imxrt118x_irq.h, and support
for more interrupts in imxrt_irq.c and imxrt_clrpend.c.
The interrupt numbers are generated from the Reference Manual by AI
Assisted-by: Claude Code:claude-opus-4-7
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
Add imxrt118x memorymaps as hardware/rt118x/imxrt118x_memorymap.h
Assisted-by: Claude Code:claude-opus-4-8
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
- Only submit and account for a wrapped second TX segment when scatter/gather descriptors
are available. Without in-memory TCDs, submitting the second segment overwrites the
active hardware descriptor and incorrectly advances the serial buffer past unsent data.
- Invalidate DMA RX buffer initially
Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
Some SoCs have a single timer group, so a hardcoded GROUP_ID of 1
overflowed soc_timg_gptimer_signals and crashed in
periph_rcc_acquire_enter. Guard gptimer group 1 behind
TIMG_LL_GET(INST_NUM) as well.
Assisted-by: Claude:claude-opus-5
Signed-off-by: Marcio Ribeiro <marcio.ribeiro@espressif.com>
Support USART waking from low power modes, allow keeping
HSI running in STOP mode, allow specifying clock source
for USARTs, add some missing register and field definitions.
stm32 common Kconfigs:
Add common STM32 UART config options USARTx_WAKE_FROM_LOW_POWER and USARTx_WUS
for USART to cause wake up from low power modes.
stm32h5 board configs:
Allow board.h to choose the clock source of each USART.
Allow board.h to express that HSI should continue running
in low power modes.
stm32h5 RCC:
Set the clock source for each USART if specified in the
board configs (STM32_RCC_CCIPR1_USARTxSEL).
Keep HSI on in STOP mode if specified in the board configs
(STM32_BOARD_HSIKERON_ENABLE).
stm32h5 serial driver:
Use the new USARTx_WAKE_FROM_LOW_POWER and USARTx_WUS in
stm32h5 serial driver to wake from low power modes.
Use the USART clock source specified by board configs.
Enable FIFOs.
Clear UE bit before initialization.
Co-authored-by: Javier Casas <javiercasas@geotab.com>
Co-authored-by: daniellizewski <daniellizewski@geotab.com>
Signed-off-by: Liam Howatt <liamhowatt@geotab.com>
Use the HAL line-fitting APIs when curve fitting is not available.
Assisted-by: Cursor:Grok 4.6
Signed-off-by: Marcio Ribeiro <marcio.ribeiro@espressif.com>
Fix coding style issues flagged by nxstyle in files touched by the
SO_TIMESTAMPING series. These are pre-existing issues, not introduced
by the SO_TIMESTAMPING patches:
- inet_sockif.c: missing blank lines after declarations
- ipv4_input.c: missing blank line after declaration, bad comment alignment
- can_input.c: bad indentation inside #ifdef block
- getsockopt.c: bad comment block alignment, bad brace alignment
- setsockopt.c: wrong column position of comment
- sim_netdriver.c: missing blank lines after declarations
Signed-off-by: wenquan1 <wenquan1@xiaomi.com>
Add TX timestamp loopback support to the simulator network driver.
When a packet tagged with io_conn (SO_TIMESTAMPING TX) is sent,
the driver clones the packet, generates a software timestamp, and
queues it for loopback through the RX path. The protocol layer
(UDP/PKT) then delivers the timestamp via MSG_ERRQUEUE.
- Add tstampq IOB queue to sim_netdev_s for loopback packets.
- In netdriver_send(), clone timestamped packets with realtime
clock and notify RX ready.
- In netdriver_recv(), return loopback packets before reading
from the tap device.
Signed-off-by: wenquan1 <wenquan1@xiaomi.com>
Replace compile-time CONFIG_ARCH_HAVE_NETDEV_TIMESTAMP with
a runtime NETDEV_RX_STAMP bit in net_driver_s.d_features.
Drivers providing hardware RX timestamps set the flag at
probe time; the stack checks it at runtime.
Signed-off-by: OceanfromXiaomi <zhaohaiyang1@xiaomi.com>
Add board-level configuration and driver support for differential input
channels and auto-calibration on STM32 ADC IPv2 and IPv2G4 (STM32F3,
STM32G4), following the STM32H5 architecture pattern requested in review:
- In hardware headers (stm32_adc_v2.h and stm32_adc_v2g4.h), fix register
comments and define ADC_DIFSEL register shift and masks.
- In stm32_adc_m3m4_v1v2.c:
- Add difsel field to struct stm32_dev_s initialized from
BOARD_ADCx_DIFSEL if defined, falling back to ADC_DIFSEL_DEFAULT (0).
- Configure DIFSEL before enabling the ADC in adc_configure().
- Fix and enable adc_calibrate() for HAVE_IP_ADC_V2, supporting both
single-ended calibration (ADCALDIF=0) and differential calibration
(ADCALDIF=1) based on the channel selection.
Verified on Nucleo-G431KB (single-ended and differential channel 1).
Assisted-by: Gemini:gemini-2.5-pro
Signed-off-by: Daniel P. Carvalho <danieloak@gmail.com>
Add an API for OTP (one-time programmable) memory on stm32h5.
There are OTP APIs for non-STM32 platforms.
There is no other API for STM32 so far with these names.
Implement it in stm32h563xx_flash.c since the progmem abstraction
also lives there.
int stm32_otp_write(const uint16_t *data, uint16_t len, uint32_t offset);
int stm32_otp_read(uint16_t *data, uint16_t len, uint32_t offset);
The API allows cross-block reads/writes that don't necessarily
start/end at block boundaries.
The type of `data` is uint16_t * to express to the caller that the
pointer should be 2-aligned. The natural size of OTP words is 16 bits.
`len` is uint16_t for no strong reason. Preserve author's work.
uint32_t stm32_otp_getlockstatus(void);
Get a mask of blocks that are locked. A block being locked
is considered as being one-time programmed.
Co-authored-by: Mykhailo Sopiha <mykhailosopiha@geotab.com>
Signed-off-by: Liam Howatt <liamhowatt@geotab.com>
