soc: sam0: samd5x: xosc32 configurable startup time (72a1c809) · Commits · Wenxi XU / zephyr

soc/atmel/sam0/common/Kconfig.samd5x

+8 −0

Changes for soc/atmel/sam0/common/Kconfig.samd5x: 8 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -10,6 +10,14 @@ config SOC_ATMEL_SAMD5X_XOSC32K
		startup. This can then be selected as the main clock source
		for the SOC.

		config SOC_ATMEL_SAMD5X_XOSC32K_STARTUP
		depends on SOC_ATMEL_SAMD5X_XOSC32K
		hex "Startup time external 32 kHz crystal oscillator"
		range 0x0 0x6
		default 0x1
		help
		Selects the startup time for the external 32 kHz crystal oscillator.

		choice
		prompt "Main clock source"
		default SOC_ATMEL_SAMD5X_DEFAULT_AS_MAIN

+8 −3

Changes for soc/atmel/sam0/common/soc_samd5x.c: 8 added lines, 3 removed lines.
Original line number	Diff line number	Diff line
		@@ -18,13 +18,18 @@
		#define SAM0_DFLL_FREQ_HZ (48000000U)
		#define SAM0_DPLL_FREQ_MIN_HZ (96000000U)
		#define SAM0_DPLL_FREQ_MAX_HZ (200000000U)
		#define SAM0_XOSC32K_STARTUP_TIME CONFIG_SOC_ATMEL_SAMD5X_XOSC32K_STARTUP

		#if CONFIG_SOC_ATMEL_SAMD5X_XOSC32K_AS_MAIN
		static void osc32k_init(void)
		{
		OSC32KCTRL->XOSC32K.reg = OSC32KCTRL_XOSC32K_ENABLE \| OSC32KCTRL_XOSC32K_XTALEN
		\| OSC32KCTRL_XOSC32K_EN32K \| OSC32KCTRL_XOSC32K_RUNSTDBY
		\| OSC32KCTRL_XOSC32K_STARTUP(0) \| OSC32KCTRL_XOSC32K_CGM_XT;
		OSC32KCTRL->XOSC32K.reg = OSC32KCTRL_XOSC32K_ENABLE
		\| OSC32KCTRL_XOSC32K_XTALEN
		\| OSC32KCTRL_XOSC32K_CGM_XT
		\| OSC32KCTRL_XOSC32K_EN32K
		\| OSC32KCTRL_XOSC32K_RUNSTDBY
		\| OSC32KCTRL_XOSC32K_STARTUP(SAM0_XOSC32K_STARTUP_TIME)
		;

		while (!OSC32KCTRL->STATUS.bit.XOSC32KRDY) {
		}