* [#16148](https://github.com/apache/nuttx/pull/16148) Sched small sem cleanups
* [#16394](https://github.com/apache/nuttx/pull/16394) sched: Add max delay tick limitation for wdog/wqueue.
* [#16389](https://github.com/apache/nuttx/pull/16389) sched: Remove checking of WDOG_ISACTIVE when cancelling wdog
* [#15998](https://github.com/apache/nuttx/pull/15998) sched: simplify call of get current tcb
* [#16262](https://github.com/apache/nuttx/pull/16262) sched/affinity: Fix CPU_LOCKED functionality for some SMP calls
* [#16134](https://github.com/apache/nuttx/pull/16134) sched/gettid: Move thread ID to TLS
* [#15951](https://github.com/apache/nuttx/pull/15951) sched/init: Fix build error with CONFIG_BOARD_CRASHDUMP_CUSTOM
* [#16113](https://github.com/apache/nuttx/pull/16113) sched/mutex: add ticked lock version for mutex/rmutex
* [#16329](https://github.com/apache/nuttx/pull/16329) sched/queue: fix typo in dq_insert_mid macro
* [#15982](https://github.com/apache/nuttx/pull/15982) sched/sem_waitirq: Move kmm_map() call to sem_wait()
* [#16334](https://github.com/apache/nuttx/pull/16334) sched/signal: Fix signal delivered to a wrong thread
* [#16333](https://github.com/apache/nuttx/pull/16333) sched/signal: signal dispatch cleanups
* [#16301](https://github.com/apache/nuttx/pull/16301) sched/signal/sig_dispatch: Fix a race condition between nxsig_tcbdispatch and nxsig_deliver
* [#16383](https://github.com/apache/nuttx/pull/16383) sched/timedwait: Ensure critical section for nxsig_timeout
* [#15937](https://github.com/apache/nuttx/pull/15937) sched/wdog: Support for periodic wdog.
* [#16343](https://github.com/apache/nuttx/pull/16343) sched/wdog: watchdog timer improvements.
* [#16342](https://github.com/apache/nuttx/pull/16342) sched/wqueue: Fix wd_cancel_sync and improve work_queue performance.
* [#16231](https://github.com/apache/nuttx/pull/16231) sched/wqueue: Refactor delayed and periodic workqueue.

* [#16130](https://github.com/apache/nuttx/pull/16130) libc/arm: optimize crc32/crc32c for arm
* [#16311](https://github.com/apache/nuttx/pull/16311) libc/backtrace: Fix compilation error when set LIBC_BACKTRACE_BUFFSIZE
* [#16374](https://github.com/apache/nuttx/pull/16374) libc/fdcheck: fix issue about  a double close check
* [#16149](https://github.com/apache/nuttx/pull/16149) libc/semaphore: Read semaphore value by using NXSEM_COUNT macro
* [#15944](https://github.com/apache/nuttx/pull/15944) libc/strings: fix compile warning if enable -Wshadow
* [#16142](https://github.com/apache/nuttx/pull/16142) libs/libc/crc16: add some comments for crc16ccitt
* [#16143](https://github.com/apache/nuttx/pull/16143) libs/libc/crc16: add support of CRC-16/ANSI(aka CRC-16/IBM)
* [#16360](https://github.com/apache/nuttx/pull/16360) libs/libc/semaphore: Enable semaphore fast wait/post paths for counting semaphores
* [#16147](https://github.com/apache/nuttx/pull/16147) libs/libc/crc16: Separate implementation of crc16xmodem from crc16

* [#16241](https://github.com/apache/nuttx/pull/16241) tools: Update Unix.mk for CONFIG_ARCH_BOARD_COMMON
* [#16000](https://github.com/apache/nuttx/pull/16000) tools/bdf-converter: Fix loop termination condition.
* [#16015](https://github.com/apache/nuttx/pull/16015) tools/checkpatch: Use gmake on BSD, make otherwise.
* [#16402](https://github.com/apache/nuttx/pull/16402) tools/CMakeLists.txt: Improvements to CMakeLists.txt file
* [#16413](https://github.com/apache/nuttx/pull/16413) tools/Config.mk: add -DHAVE_STRNDUP=1
* [#16452](https://github.com/apache/nuttx/pull/16452) tools/doreleasenotes.py: remove deprecater API
* [#15854](https://github.com/apache/nuttx/pull/15854) tools/espressif: Improve version checking by subprocess
* [#16169](https://github.com/apache/nuttx/pull/16169) tools/host_info_dump.py: fix UnboundLocalError: local variable 'vendor_specific_module_path' referenced before assignment
* [#15953](https://github.com/apache/nuttx/pull/15953) tools/mksyscall: fix 106: Unexpected end of line: "FAR char * co"
* [#16396](https://github.com/apache/nuttx/pull/16396) tools/nxstyle.c: fix error Relative file path on Windows Native
* [#16426](https://github.com/apache/nuttx/pull/16426) tools/nxstyle.c: fix defined but not used warning
* [#16313](https://github.com/apache/nuttx/pull/16313) tools/process_config: remove unused unnecessary printing

* [#16138](https://github.com/apache/nuttx/pull/16138) arch/arm: add stm32c0 support
* [#16296](https://github.com/apache/nuttx/pull/16296) arch/arm/stm32f0l0g0: Add support for STM32G0B1xx
* [#15996](https://github.com/apache/nuttx/pull/15996) arch/arm64/a527: Add support for Allwinner A527 SoC
* [#15921](https://github.com/apache/nuttx/pull/15921) arch/risc-v/eic7700x: Add support for ESWIN EIC7700X SoC

ARM

* [#16018](https://github.com/apache/nuttx/pull/16018) arch/arm: add missing include for itm_syslog
* [#16019](https://github.com/apache/nuttx/pull/16019) arch/arm: Fix crash when using memcpy/memset as RAMFUNCS
* [#16344](https://github.com/apache/nuttx/pull/16344) arch/arm: fix arm-7a mmu using l1entry swap, we should use per-process mmu table, can speed up for above 10 times.
* [#15897](https://github.com/apache/nuttx/pull/15897) arch/arm: guard .thumb_func use
* [#16227](https://github.com/apache/nuttx/pull/16227) arch/arm/armv6-m/CMakeLists.txt: fix undefined reference to up_show_cpuinfo
* [#16120](https://github.com/apache/nuttx/pull/16120) arch/arm/armv8-r: Enable fpu before arm_el_init
* [#16112](https://github.com/apache/nuttx/pull/16112) arch/arm/imx6: fix missed comma
* [#16446](https://github.com/apache/nuttx/pull/16446) arch/arm/imxrt: rt10xx: MPU fixes and allow to put ramvectors inside ITCM.
* [#16460](https://github.com/apache/nuttx/pull/16460) arch/arm/imxrt: rt117x fix TCM/OCRAM ECC backdoor access
* [#15988](https://github.com/apache/nuttx/pull/15988) arch/arm/nucleo-f429zi: Add board flash size config for STM32F429ZI
* [#16308](https://github.com/apache/nuttx/pull/16308) arch/arm/nrf53: fix broken RPMSG HCI server
* [#16281](https://github.com/apache/nuttx/pull/16281) arch/arm/rp2040: Allow simultaneous selection of multiple interrupt modes
* [#16037](https://github.com/apache/nuttx/pull/16037) arch/arm/rp2040|rp23xx: remove ADC option from Kconfig
* [#16348](https://github.com/apache/nuttx/pull/16348) arch/arm/rp2040/gpio: Fix debug assertion for interrupts.
* [#16244](https://github.com/apache/nuttx/pull/16244) arch/arm/rp23xx: Address the spinlock errata RP2350-E2
* [#16306](https://github.com/apache/nuttx/pull/16306) arch/arm/rp23xx: add dsp/fpu extensions support
* [#16330](https://github.com/apache/nuttx/pull/16330) arch/arm/rp23xx: add missing fpu init for smp cores
* [#16363](https://github.com/apache/nuttx/pull/16363) arch/arm/rp23xx: allow to use armv8m systick lowerhalf
* [#16214](https://github.com/apache/nuttx/pull/16214) arch/arm/rp23xx: Fix IRQ prioritize
* [#16247](https://github.com/apache/nuttx/pull/16247) arch/arm/rp23xx: fix irq priority levels
* [#16253](https://github.com/apache/nuttx/pull/16253) arch/arm/rp23xx: fix linker scripts 100% RAM usage bug
* [#16304](https://github.com/apache/nuttx/pull/16304) arch/arm/rp23xx: fix not restart after TX error
* [#16210](https://github.com/apache/nuttx/pull/16210) arch/arm/rp23xx: Fix PWM registers access
* [#16299](https://github.com/apache/nuttx/pull/16299) arch/arm/rp23xx: fix watchdog, enable TICK blocks
* [#16331](https://github.com/apache/nuttx/pull/16331) arch/arm/rp23xx: update serial code to recent smp fixes from cxd56 serial code
* [#16300](https://github.com/apache/nuttx/pull/16300) arch/arm/rp23xx: update USB PLL/VCO/FBDIV
* [#16349](https://github.com/apache/nuttx/pull/16349) arch/arm/rp23xx: remove spinlock from up_txint
* [#16395](https://github.com/apache/nuttx/pull/16395) arch/arm/rp23xx: resets: do not reset USBCTL, SYSCFG
* [#16372](https://github.com/apache/nuttx/pull/16372) arch/arm/rp23xx: wdog: Ensure setup before register phase
* [#16398](https://github.com/apache/nuttx/pull/16398) arch/arm/rp23xx: xosc: Update startup delay calculation
* [#16303](https://github.com/apache/nuttx/pull/16303) arch/arm/sama5: Add support for reset reason logging
* [#16078](https://github.com/apache/nuttx/pull/16078) arch/arm/sama5/spi: fix ifdelay setup in spi_setdelay call
* [#16079](https://github.com/apache/nuttx/pull/16079) arch/arm/samv7: enable GPIO clock even if interrupt not enabled
* [#16434](https://github.com/apache/nuttx/pull/16434) arch/arm/samv7/sam_us.c: disable interrupts for flash access
* [#15900](https://github.com/apache/nuttx/pull/15900) arch/arm/samv7/spi: fix ifdelay setup in spi_setdelay call
* [#15991](https://github.com/apache/nuttx/pull/15991) arch/arm/stm32: fix stm32f1xx alarm support
* [#16102](https://github.com/apache/nuttx/pull/16102) arch/arm/stm32l4: Add CMakeLists for the STM32L4
* [#16206](https://github.com/apache/nuttx/pull/16206) arch/arm/stm32h5: Add USART6 serial driver config.
* [#16178](https://github.com/apache/nuttx/pull/16178) arch/arm/stm32h5: implement flash driver for progmem
* [#16204](https://github.com/apache/nuttx/pull/16204) arch/arm/stm32h5: copy bss and initialized data before configuring hardware
* [#16180](https://github.com/apache/nuttx/pull/16180) arch/arm/stm32h5: DTS Hardware Files
* [#16207](https://github.com/apache/nuttx/pull/16207) arch/arm/stm32h5: Fix ADC internal channel configuration.
* [#16422](https://github.com/apache/nuttx/pull/16422) arch/arm/stm32h5: Fix FLASH bank logic during erase operations.
* [#16205](https://github.com/apache/nuttx/pull/16205) arch/arm/stm32h5: Fix i2c compiler warnings.
* [#16218](https://github.com/apache/nuttx/pull/16218) arch/arm/stm32h5: GPDMA Hardware files
* [#15718](https://github.com/apache/nuttx/pull/15718) arch/arm/STM32H5: Initial ICACHE Support
* [#16220](https://github.com/apache/nuttx/pull/16220) arch/arm/stm32h5: organize peripheral Kconfig selection
* [#16224](https://github.com/apache/nuttx/pull/16224) arch/arm/stm32h7: unassigned ret variable in SIOCSCANBITRATE.
* [#16338](https://github.com/apache/nuttx/pull/16338) arch/arm/stm32f0l0g0: Add STM32G0 Flash driver.
* [#16150](https://github.com/apache/nuttx/pull/16150) arch/arm/stm32f0l0g0: add watchdog support
* [#15949](https://github.com/apache/nuttx/pull/15949) arch/arm/stm32f0l0g0: Fix SPI reads when nbits is 8
* [#16137](https://github.com/apache/nuttx/pull/16137) arch/arm/stm32f0l0g0/stm32_adc.c: fix ADC calibration


## ARM64
* [#15939](https://github.com/apache/nuttx/pull/15939) arch/arm64: Add up_perf_init for qemu.
* [#15938](https://github.com/apache/nuttx/pull/15938) arch/arm64: Improvements on ARM generic timer drivers.
* [#16387](https://github.com/apache/nuttx/pull/16387) arch/arm64/imx9: Extend ELE API with RNG support
* [#16458](https://github.com/apache/nuttx/pull/16458) arch/arm64/imx9: Guard EL3-only features when booting at EL1
* [#16332](https://github.com/apache/nuttx/pull/16332) arch/arm64/imx9: Support for AHAB authentication + ROMAPI
* [#15970](https://github.com/apache/nuttx/pull/15970) arch/arm64/imx9: Support for imx9 edgelock enclave
* [#16453](https://github.com/apache/nuttx/pull/16453) arch/arm64/toolchain: Add -fstack-usage for stack analysis

## AVR
* [#16365](https://github.com/apache/nuttx/pull/16365) arch/avr: AVR fixes and support for AVR DA/DB family
* [#16451](https://github.com/apache/nuttx/pull/16451) arch/avr: fix up_saveusercontext and other smaller changes
* [#16268](https://github.com/apache/nuttx/pull/16268) arch/avr: Fixes before adding support to AVRDB
* [#16457](https://github.com/apache/nuttx/pull/16457) arch/avr/atmega: Resolve memory corruption preventing boot

## RISC-V
* [#16223](https://github.com/apache/nuttx/pull/16223) arch/espressif: Add dedicated GPIO support for esp32[-s2|-s3|-c3|-c6|-h2]
* [#16350](https://github.com/apache/nuttx/pull/16350) arch/espressif: Add SDM support for esp32[-|-s2|-s3|-c3|-c6|-h2]
* [#16320](https://github.com/apache/nuttx/pull/16320) arch/espressif: Add variable to override MCUboot version and URL
* [#16391](https://github.com/apache/nuttx/pull/16391) arch/espressif: Fixes for Quadrature Encoder mode of PCNT peripheral
* [#16315](https://github.com/apache/nuttx/pull/16315) arch/risc-v: Add RS485 support for esp32[-c3|-c6|h2]
* [#16173](https://github.com/apache/nuttx/pull/16173) arch/risc-v: PANIC() on system call crash
* [#16014](https://github.com/apache/nuttx/pull/16014) arch/risc-v: Fix wrong source name in make script
* [#16266](https://github.com/apache/nuttx/pull/16266) arch/risc-v: save/restore fpu registers always when CONFIG_ARCH_LAZYFPU is off
* [#15929](https://github.com/apache/nuttx/pull/15929) arch/risc-v: tick timer improvements
* [#15941](https://github.com/apache/nuttx/pull/15941) arch/risc-v/common: Fix unaligned stack access on 64-bit risc-v
* [#16252](https://github.com/apache/nuttx/pull/16252) arch/risc-v/esp32{c6,c3,h2}: Fix bootloader flash compiler error
* [#16284](https://github.com/apache/nuttx/pull/16284) arch/risc-v/esp32{c6,c3,h2}: Fix bootloader crash when flash QIO is enabled
* [#15992](https://github.com/apache/nuttx/pull/15992) arch/risc-v/esp32[c3|c6|h2]: Fix efuse issue on MCUBoot
* [#16108](https://github.com/apache/nuttx/pull/16108) arch/risc-v/esp32h2: Set the default SPI flash frequency to 64MHz
* [#16219](https://github.com/apache/nuttx/pull/16219) arch/risc-v/espressif: Bump common source version
* [#16175](https://github.com/apache/nuttx/pull/16175) arch/risc-v/espressif: Fix bug with usbconsole and DEBUG_FEATURES
* [#15920](https://github.com/apache/nuttx/pull/15920) arch/risc-v/espressif: Remove usb serial workaround for esp32 modules
* [#16392](https://github.com/apache/nuttx/pull/16392) arch/risc-v/espressif/esp_pcnt.c: counter accumulation fix
* [#16292](https://github.com/apache/nuttx/pull/16292) arch/risc-v/k230: update documents
* [#15979](https://github.com/apache/nuttx/pull/15979) arch/risc-v/mpfs ethernet improvements
* [#16031](https://github.com/apache/nuttx/pull/16031) arch/risc-v/mpfs: Remove big kernel lock from several drivers
* [#16026](https://github.com/apache/nuttx/pull/16026) arch/risc-v/mpfs/mpfs_rcc: Add stub driver for FPGA clock and reset controller
* [#16126](https://github.com/apache/nuttx/pull/16126) arch/risc-v/mpfs/mpfs_entrypoints.c: Change atomic_load > atomic_read
* [#16177](https://github.com/apache/nuttx/pull/16177) arch/risc-v/mpfs/usb: Align usb_ctrlreq_s properly to 32-bit boundary

## SIM
* [#16285](https://github.com/apache/nuttx/pull/16285) arch/sim: add CAN interface support
* [#16162](https://github.com/apache/nuttx/pull/16162) arch/sim: Add i2c setup and shutdown interface
* [#16381](https://github.com/apache/nuttx/pull/16381) arch/sim/Kconfig: simulated CAN depends on LINUX host
* [#16433](https://github.com/apache/nuttx/pull/16433) arch/sim/sim_canchar.c: fix compilation when CAN FD is disabled
* [#16371](https://github.com/apache/nuttx/pull/16371) arch/sim/sim_canchar.c: notify upper-half driver that tx done
* [#16358](https://github.com/apache/nuttx/pull/16358) arch/sim/sim_oneshot: Calculate next oneshot time in ticks instead of…

## X86_64
* [#16287](https://github.com/apache/nuttx/pull/16287) arch/x86_64: add debug interface
* [#15935](https://github.com/apache/nuttx/pull/15935) arch/x86_64: Implement TSC frequency query via CPUID 0x40000010
* [#16288](https://github.com/apache/nuttx/pull/16288) arch/x86_64: support for stack canaries

## XTENSA
* [#15866](https://github.com/apache/nuttx/pull/15866) arch/esp32_partition: add some partition operation interfaces for esp32
* [#16260](https://github.com/apache/nuttx/pull/16260) arch/esp32_partition.c:  fix the incorrect boot sequence when switching from Factory to OTA_1
* [#15885](https://github.com/apache/nuttx/pull/15885) arch/esp32_himemcdev: Replace file descriptor with node
* [#15904](https://github.com/apache/nuttx/pull/15904) arch/esp32_spi: Add check to see if the TX_FIFO is empty
* [#16092](https://github.com/apache/nuttx/pull/16092) arch/xtensa/common: Make esp32 wlan device configurable
* [#16157](https://github.com/apache/nuttx/pull/16157) arch/xtensa/espressif: Fix ESP32-S2 SPI flash frequency selection
* [#15993](https://github.com/apache/nuttx/pull/15993) arch/xtensa/espressif: Fix I2C Slave driver error
* [#15855](https://github.com/apache/nuttx/pull/15855) arch/xtensa: add CONFIG_SPIRAM_MEMTEST from ESP-IDF
* [#16155](https://github.com/apache/nuttx/pull/16155) arch/xtensa: Add common I2S support for esp32[- |-s2|-s3]
* [#16208](https://github.com/apache/nuttx/pull/16208) arch/xtensa: add crt0 to initialize environment
* [#15907](https://github.com/apache/nuttx/pull/15907) arch/xtensa: initial support for debugpoint api
* [#16022](https://github.com/apache/nuttx/pull/16022) arch/xtensa: fix definition for `_int32_t` and `_uint32_t`
* [#16127](https://github.com/apache/nuttx/pull/16127) arch/xtensa: move espnow from esp32 to common/espressif
* [#16016](https://github.com/apache/nuttx/pull/16016) arch/xtensa/esp32: Add support for hardware accelerated SHA
* [#15962](https://github.com/apache/nuttx/pull/15962) arch/xtensa/esp32: espnow improvements
* [#16012](https://github.com/apache/nuttx/pull/16012) arch/xtensa/esp32s3: Add esp32s3 lcd ev v1.5 support
* [#16152](https://github.com/apache/nuttx/pull/16152) arch/xtensa/esp32s3: Fix bug regarding SPI flash operation mode
* [#16261](https://github.com/apache/nuttx/pull/16261) arch/xtensa/esp32s3: fix tickless mode timer unexpect interrupt handle
* [#16085](https://github.com/apache/nuttx/pull/16085) arch/xtensa/esp32s3: The MISO and C/S pins are optional
* [#15954](https://github.com/apache/nuttx/pull/15954) arch/xtensa/esp32[s2|s3]: Add number of IRQ status lists for PHY initialization configuration