3 * Stelian Pop <stelian@popies.net>
4 * Lead Tech Design <www.leadtechdesign.com>
5 * Copyright (C) 2009 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
7 * SPDX-License-Identifier: GPL-2.0+
9 #ifndef __ASM_ARM_ARCH_CLK_H__
10 #define __ASM_ARM_ARCH_CLK_H__
12 #include <asm/arch/hardware.h>
13 #include <asm/arch/at91_pmc.h>
14 #include <asm/global_data.h>
16 static inline unsigned long get_cpu_clk_rate(void)
18 DECLARE_GLOBAL_DATA_PTR;
19 return gd->arch.cpu_clk_rate_hz;
22 static inline unsigned long get_main_clk_rate(void)
24 DECLARE_GLOBAL_DATA_PTR;
25 return gd->arch.main_clk_rate_hz;
28 static inline unsigned long get_mck_clk_rate(void)
30 DECLARE_GLOBAL_DATA_PTR;
31 return gd->arch.mck_rate_hz;
34 static inline unsigned long get_plla_clk_rate(void)
36 DECLARE_GLOBAL_DATA_PTR;
37 return gd->arch.plla_rate_hz;
40 static inline unsigned long get_pllb_clk_rate(void)
42 DECLARE_GLOBAL_DATA_PTR;
43 return gd->arch.pllb_rate_hz;
46 static inline u32 get_pllb_init(void)
48 DECLARE_GLOBAL_DATA_PTR;
49 return gd->arch.at91_pllb_usb_init;
52 #ifdef CPU_HAS_H32MXDIV
53 static inline unsigned int get_h32mxdiv(void)
55 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
57 return readl(&pmc->mckr) & AT91_PMC_MCKR_H32MXDIV;
60 static inline unsigned int get_h32mxdiv(void)
66 static inline unsigned long get_macb_pclk_rate(unsigned int dev_id)
69 return get_mck_clk_rate() / 2;
71 return get_mck_clk_rate();
74 static inline unsigned long get_usart_clk_rate(unsigned int dev_id)
77 return get_mck_clk_rate() / 2;
79 return get_mck_clk_rate();
82 static inline unsigned long get_lcdc_clk_rate(unsigned int dev_id)
84 return get_mck_clk_rate();
87 static inline unsigned long get_spi_clk_rate(unsigned int dev_id)
90 return get_mck_clk_rate() / 2;
92 return get_mck_clk_rate();
95 static inline unsigned long get_twi_clk_rate(unsigned int dev_id)
98 return get_mck_clk_rate() / 2;
100 return get_mck_clk_rate();
103 static inline unsigned long get_mci_clk_rate(void)
106 return get_mck_clk_rate() / 2;
108 return get_mck_clk_rate();
111 static inline unsigned long get_pit_clk_rate(void)
114 return get_mck_clk_rate() / 2;
116 return get_mck_clk_rate();
119 int at91_clock_init(unsigned long main_clock);
120 void at91_periph_clk_enable(int id);
121 void at91_periph_clk_disable(int id);
122 #endif /* __ASM_ARM_ARCH_CLK_H__ */