dechao_gong 2546802911 arch/arm/rtl8720f: add PWM master driver support ... Wire the shared Ameba PWM driver (arch/arm/src/common/ameba/ameba_pwm.c) to RTL8720F. The chip spreads PWM across several four-channel timers (TIM4/TIM5); this port drives TIM4 as the single time base with four compare channels, matching the shared driver's model. A new ameba_pwm_chip.h supplies the RTL8720F specifics taken from the SDK fwlib headers: TIM4 at the non-secure base 0x401c7000, 40 MHz input clock, IRQ 9 (TIMER4_IRQ), crossbar pad-mux codes 45..48 (PINMUX_FUNCTION_TIM4_PWM0..3) and the distinct function/clock enable bits (APBPeriph_PWM0 / APBPeriph_PWM0_CLOCK). The board registers one timer at /dev/pwm0 with channel 1 on PB18 and channel 2 on PB19 for the pwm example; edit the table to match a board's wiring. The common driver is not touched. Signed-off-by: dechao_gong <dechao_gong@realsil.com.cn> Assisted-by: Claude <noreply@anthropic.com>		2026-08-17 09:34:22 -03:00
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boards/rtl8720f_evb	arch/arm/rtl8720f: add PWM master driver support	2026-08-17 09:34:22 -03:00
index.rst	arch/arm/ameba: add CMake build support for RTL8721Dx and RTL8720F	2026-07-17 08:30:47 -03:00