drivers/clock_control/Kconfig.npcx

# NPCX Clock controller driver configuration options

# Copyright (c) 2020 Nuvoton Technology Corporation.
# SPDX-License-Identifier: Apache-2.0

config CLOCK_CONTROL_NPCX
	bool "NPCX clock controller driver"
	depends on SOC_FAMILY_NPCX
	help
	  Enable support for NPCX clock controller driver.

config CLOCK_NPCX_OSC_CYCLES_PER_SEC
	int "CDCG PLL frequency"
	default 48000000
	range 10000000 100000000
	depends on SOC_FAMILY_NPCX
	help
	  Core Domain Clock (OSC_CLK) Generator PLL frequency,
	  allowed values: From 10Mhz to 100Mhz.

config CLOCK_NPCX_APB1_PRESCALER
	int "APB1 prescaler"
	default 4
	range 1 10
	depends on SOC_FAMILY_NPCX
	help
	  This sets the APB1 prescaler which changes the frequency of APB1_CLK.
	  APB1_CLK frequency = OSC_CLK / APB1_PRE. The APB1 prescaler allowed
	  value is from 1 to 10.

	  The generated frequency of APB1_CLK should comply with the following
	  requirements:
	  - The frequency of APB1_CLK must be set to:
	  4MHz <= APB1_CLK <= 50MHz.
	  - The frequency of APB1_CLK must be an integer division (including 1)
	  of the frequency of the Core clock.

config CLOCK_NPCX_APB2_PRESCALER
	int "APB2 prescaler"
	default 8
	range 1 10
	depends on SOC_FAMILY_NPCX
	help
	  This sets the APB2 prescaler which changes the frequency of APB2_CLK.
	  APB2_CLK frequency = OSC_CLK / APB2_PRE. The APB2 prescaler allowed
	  value is from 1 to 10.

	  The generated frequency of APB2_CLK should comply with the following
	  requirements:
	  - The frequency of APB2_CLK must be set to:
	  8MHz <= APB2_CLK <= 50MHz.
	  - The frequency of APB2_CLK must be an integer division (including 1)
	  of the frequency of the Core clock.

config CLOCK_NPCX_APB3_PRESCALER
	int "APB3 prescaler"
	default 2
	range 1 10
	depends on SOC_FAMILY_NPCX
	help
	  This sets the APB3 prescaler which changes the frequency of APB3_CLK.
	  APB3_CLK frequency = OSC_CLK / APB3_PRE. The APB3 prescaler allowed
	  value is from 1 to 10.

	  The generated frequency of APB3_CLK should comply with the following
	  requirements:
	  - The frequency of APB3_CLK must be set to:
	  12.5MHz <= APB3_CLK <= 50MHz.
	  - The frequency of APB3_CLK must be an integer division (including 1)
	  of the frequency of the Core clock.