b8c9645140
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@970 42af7a65-404d-4744-a932-0658087f49c3
106 lines
5.1 KiB
C
106 lines
5.1 KiB
C
/****************************************************************************************************
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* arch/arm/src/lpc214x/lpc214x_pll.h
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*
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* Copyright (C) 2008 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************************************/
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#ifndef _ARCH_ARM_SRC_LPC214X_PLL_H
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#define _ARCH_ARM_SRC_LPC214X_PLL_H
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/****************************************************************************************************
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* Included Files
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****************************************************************************************************/
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#include <chip.h>
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/****************************************************************************************************
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* Definitions
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****************************************************************************************************/
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/* PLL bass addresses *******************************************************************************/
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/* There are two PLLs: PLL0 generates CCLK and PLL1 is configured to provide the 48MHx USB clock */
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#define LPC214X_PLL0_BASE (LPC214X_PLL_BASE)
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#define LPC214X_PLL1_BASE (LPC214X_PLL_BASE + 0x00000020)
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/* PLL registers ************************************************************************************/
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#define LPC214x_PLL0_CON (LPC214X_PLL0_BASE+LPC214X_PLL_CON_OFFSET)
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#define LPC214x_PLL0_CFG (LPC214X_PLL0_BASE+LPC214X_PLL_CFG_OFFSET)
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#define LPC214x_PLL0_STAT (LPC214X_PLL0_BASE+LPC214X_PLL_STAT_OFFSET)
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#define LPC214x_PLL0_FEED (LPC214X_PLL0_BASE+LPC214X_PLL_FEED_OFFSET)
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#define LPC214x_PLL1_CON (LPC214X_PLL1_BASE+LPC214X_PLL_CON_OFFSET)
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#define LPC214x_PLL1_CFG (LPC214X_PLL1_BASE+LPC214X_PLL_CFG_OFFSET)
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#define LPC214x_PLL1_STAT (LPC214X_PLL1_BASE+LPC214X_PLL_STAT_OFFSET)
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#define LPC214x_PLL1_FEED (LPC214X_PLL1_BASE+LPC214X_PLL_FEED_OFFSET)
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/* Register bit settings ****************************************************************************/
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/* PLL Control Register Bit Settings */
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#define LPC214X_PLL_CON_PLLE (1 << 0) /* PLL Enable */
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#define LPC214X_PLL_CON_PLLC (1 << 1) /* PLL Connect */
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/* PLL Configuration Register Bit Settings */
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#define LPC214X_PLL_CFG_MSEL (0x1f << 0) /* PLL Multiplier (minus 1) */
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#define LPC214X_PLL_CFG_PSEL (0x03 << 5) /* PLL Divider (encoded) */
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#define LPC214X_PLL_CFG_PSEL1 (0x00 << 5)
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#define LPC214X_PLL_CFG_PSEL2 (0x01 << 5)
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#define LPC214X_PLL_CFG_PSEL4 (0x02 << 5)
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#define LPC214X_PLL_CFG_PSEL8 (0x03 << 5)
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/* PLL Status Register Bit Settings */
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#define LPC214X_PLL_STAT_MSEL (0x1f << 0) /* PLL Multiplier Readback */
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#define LPC214X_PLL_STAT_PSEL (0x03 << 5) /* PLL Divider Readback */
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#define LPC214X_PLL_STAT_PLLE (1 << 8) /* PLL Enable Readback */
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#define LPC214X_PLL_STAT_PLLC (1 << 9) /* PLL Connect Readback */
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#define LPC214X_PLL_STAT_PLOCK (1 << 10) /* PLL Lock Status */
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/* PLL Feed Register values */
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#define LPC214X_PLL_FEED1 0xaa
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#define LPC214X_PLL_FEED2 0x55
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/****************************************************************************************************
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* Inline Functions
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****************************************************************************************************/
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/****************************************************************************************************
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* Global Function Prototypes
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****************************************************************************************************/
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#endif /* _ARCH_ARM_SRC_LPC214X_PLL_H */
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