2 * Copyright (C) 2006 Atmel Corporation
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 #ifndef __ASM_AVR32_ARCH_CLK_H__
23 #define __ASM_AVR32_ARCH_CLK_H__
25 #include <asm/arch/chip-features.h>
28 #define MAIN_CLK_RATE ((CFG_OSC0_HZ / CFG_PLL0_DIV) * CFG_PLL0_MUL)
30 #define MAIN_CLK_RATE (CFG_OSC0_HZ)
33 static inline unsigned long get_cpu_clk_rate(void)
35 return MAIN_CLK_RATE >> CFG_CLKDIV_CPU;
37 static inline unsigned long get_hsb_clk_rate(void)
39 return MAIN_CLK_RATE >> CFG_CLKDIV_HSB;
41 static inline unsigned long get_pba_clk_rate(void)
43 return MAIN_CLK_RATE >> CFG_CLKDIV_PBA;
45 static inline unsigned long get_pbb_clk_rate(void)
47 return MAIN_CLK_RATE >> CFG_CLKDIV_PBB;
50 /* Accessors for specific devices. More will be added as needed. */
51 static inline unsigned long get_sdram_clk_rate(void)
53 return get_hsb_clk_rate();
55 #ifdef AT32AP700x_CHIP_HAS_USART
56 static inline unsigned long get_usart_clk_rate(unsigned int dev_id)
58 return get_pba_clk_rate();
61 #ifdef AT32AP700x_CHIP_HAS_MACB
62 static inline unsigned long get_macb_pclk_rate(unsigned int dev_id)
64 return get_pbb_clk_rate();
66 static inline unsigned long get_macb_hclk_rate(unsigned int dev_id)
68 return get_hsb_clk_rate();
71 #ifdef AT32AP700x_CHIP_HAS_MMCI
72 static inline unsigned long get_mci_clk_rate(void)
74 return get_pbb_clk_rate();
77 #ifdef AT32AP700x_CHIP_HAS_SPI
78 static inline unsigned long get_spi_clk_rate(unsigned int dev_id)
80 return get_pba_clk_rate();
84 extern void clk_init(void);
86 /* Board code may need the SDRAM base clock as a compile-time constant */
87 #define SDRAMC_BUS_HZ (MAIN_CLK_RATE >> CFG_CLKDIV_HSB)
89 #endif /* __ASM_AVR32_ARCH_CLK_H__ */