How to enable VDDH (REG0) DC/DC properly in Zephyr?

RE: How to enable VDDH (REG0) DC/DC properly in Zephyr?

nRF5xFanboy — Mon, 06 Mar 2023 12:54:23 GMT

Thanks,

The kConfig part is clear
only still unclear
why the #define NRF_POWER_HAS_DCDCEN_VDDH is still needed in the code of Zephyr.

RE: How to enable VDDH (REG0) DC/DC properly in Zephyr?

Kenneth — Wed, 01 Mar 2023 09:29:06 GMT

Hello,

Here is the pull request and commit for thie kconfig option:
https://github.com/zephyrproject-rtos/zephyr/pull/39328
https://github.com/zephyrproject-rtos/zephyr/pull/39328/commits/d6882c6574c11a4446035a7eb8a933b0afea7e83

It's enabled typically by the board file I can see.

Best regards,
Kenneth

RE: How to enable VDDH (REG0) DC/DC properly in Zephyr?

nRF5xFanboy — Tue, 28 Feb 2023 17:54:22 GMT

Hi Kenneth

to include the code from nordicsemi_nrf52_init().

would it be sufficient to add somewhere to main.c

#define NRFX_POWER_ENABLED
#define NRFX_POWER_CONFIG_DEFAULT_DCDCEN
#define NRFX_POWER_CONFIG_DEFAULT_DCDCENHV

and then in ncs/zephyr

CONFIG_NRFX_POWER=y
to trigger the build of the module nrfx_power.c

CONFIG_SOC_DCDC_NRF52X=y
CONFIG_SOC_DCDC_NRF52X_HV=y
to trigger the build of the module soc.c in zephyr

i will try to implement & test this soon.

RE: How to enable VDDH (REG0) DC/DC properly in Zephyr?

nRF5xFanboy — Tue, 28 Feb 2023 17:13:58 GMT

Hi Kenneth
Any update on this topic?

The file: ncs/zephyr/soc/arm/nordic_nrf/nrf52/soc.c still has that define NRF_POWER_HAS_DCDCEN_VDDH
that is not zephyr kconfig, so who activates that define and from where?
Can you clarify for me.
Thanks
nRF5FanBoy

static int nordicsemi_nrf52_init(const struct device *arg)
{
	uint32_t key;

	ARG_UNUSED(arg);

	key = irq_lock();

#ifdef CONFIG_NRF_ENABLE_ICACHE
	/* Enable the instruction cache */
	NRF_NVMC->ICACHECNF = NVMC_ICACHECNF_CACHEEN_Msk;
#endif

#if defined(CONFIG_SOC_DCDC_NRF52X)
	nrf_power_dcdcen_set(NRF_POWER, true);
#endif
#if NRF_POWER_HAS_DCDCEN_VDDH && defined(CONFIG_SOC_DCDC_NRF52X_HV)
	nrf_power_dcdcen_vddh_set(NRF_POWER, true);
#endif

	/* Install default handler that simply resets the CPU
	* if configured in the kernel, NOP otherwise
	*/
	NMI_INIT();

	irq_unlock(key);

	return 0;
}

RE: How to enable VDDH (REG0) DC/DC properly in Zephyr?

Kenneth — Tue, 20 Apr 2021 10:06:02 GMT

I can update this case.

Kenneth

RE: How to enable VDDH (REG0) DC/DC properly in Zephyr?

Dmitry Kr — Tue, 20 Apr 2021 08:20:02 GMT

OK, thanks.

Do we have any option to be informed when this task (internal JIRA) will be closed?

RE: How to enable VDDH (REG0) DC/DC properly in Zephyr?

Kenneth — Tue, 20 Apr 2021 07:59:51 GMT

I would expect this to be configurable through a kconfig option, and then enabled in nordicsemi_nrf52_init(). However it doesn't look like this is possible as of today, so I have created an internal jira to look into this for future.

For now I assume you will need to set it manually in your application.