nuttx/Documentation/platforms/arm/rtl8720f
dechao_gong 2ddabb216a arch/arm/rtl8720f: add timer driver support
Wire the RTL8720F into the shared Ameba timer driver
(arch/arm/src/common/ameba/ameba_timer.c), registered at /dev/timer0
(TIM1) and /dev/timer1 (TIM2).  Only the per-chip base addresses, RCC
masks and IRQs differ, so this adds a small ameba_timer_chip.h (the two
32-bit basic LTIM timers at 0x40808200 / 0x40808400, 32.768 kHz,
APBPeriph_LTIM1/2, IRQ_TIMER1/2, verified against the SoC hal_platform.h
/ sysreg_lsys.h / vector table) plus the Make.defs/CMakeLists build
hooks, the fwlib ram_common/ameba_tim.c RAM source (now also pulled in
by CONFIG_AMEBA_TIMER, matching the PWM rule), the board bring-up
registration and a timer defconfig.  The shared driver is unchanged.

TIM0 is left untouched because the boot ROM claims it as the always-on
system timer; reprogramming it would break every SDK delay.

Assisted-by: Claude <noreply@anthropic.com>
Signed-off-by: dechao_gong <dechao_gong@realsil.com.cn>
2026-09-01 17:41:14 +08:00
..
boards/rtl8720f_evb arch/arm/rtl8720f: add timer driver support 2026-09-01 17:41:14 +08:00
index.rst arch/arm/ameba: add CMake build support for RTL8721Dx and RTL8720F 2026-07-17 08:30:47 -03:00