* arch/arm/src/sama5/sam_pmc.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __ARCH_ARM_SRC_SAMA5_SAM_PMC_H
#define __ARCH_ARM_SRC_SAMA5_SAM_PMC_H
* Included Files
****************************************************************************/
#include <nuttx/config.h>
* Pre-processor Definitions
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
* Public Functions Prototypes
****************************************************************************/
* Name: sam_pllack_frequency
*
* Description:
* Given the Main Clock frequency that provides the input to PLLA, return
* the frequency of the PPA output clock, PLLACK
*
* Assumptions:
* PLLA is enabled. If the PLL is is disabled, either at the input divider
* or the output multiplier, the value zero is returned.
*
****************************************************************************/
uint32_t sam_pllack_frequency(uint32_t mainclk);
* Name: sam_plladiv2_frequency
*
* Description:
* The PLLACK input to most clocking may or may not be divided by two.
* This function will return the possibly divided PLLACK clock input
* frequency.
*
* Assumptions:
* See sam_pllack_frequency.
*
****************************************************************************/
uint32_t sam_plladiv2_frequency(uint32_t mainclk);
* Name: sam_pck_frequency
*
* Description:
* Given the Main Clock frequency that provides the input to PLLA, return
* the frequency of the processor clock (PCK).
*
* Assumptions:
* PLLA is enabled and the either the main clock or the PLLA output clock
* (PLLACK) provides the input to the MCK prescaler.
*
****************************************************************************/
uint32_t sam_pck_frequency(uint32_t mainclk);
* Name: sam_mck_frequency
*
* Description:
* Given the Main Clock frequency that provides the input to PLLA, return
* the frequency of the PPA output clock, PLLACK
*
* Assumptions:
* PLLA is enabled and the either the main clock or the PLLA output clock
* (PLLACK) provides the input to the MCK prescaler.
*
****************************************************************************/
uint32_t sam_mck_frequency(uint32_t mainclk);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif
#endif