diff options
Diffstat (limited to 'src/cpu/samsung/exynos5-common/clk.h')
-rw-r--r-- | src/cpu/samsung/exynos5-common/clk.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/cpu/samsung/exynos5-common/clk.h b/src/cpu/samsung/exynos5-common/clk.h new file mode 100644 index 0000000000..0178f88ff2 --- /dev/null +++ b/src/cpu/samsung/exynos5-common/clk.h @@ -0,0 +1,71 @@ +/* + * (C) Copyright 2012 The Chromium Authors + * (C) Copyright 2010 Samsung Electronics + * Minkyu Kang <mk7.kang@samsung.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#ifndef __EXYNOS_COMMON_CLK_H_ +#define __EXYNOS_COMMON_CLK_H_ + +#include <types.h> +#include <stdint.h> + +enum periph_id; + +#define APLL 0 +#define MPLL 1 +#define EPLL 2 +#define HPLL 3 +#define VPLL 4 +#define BPLL 5 + +enum pll_src_bit { + SRC_MPLL = 6, + SRC_EPLL, + SRC_VPLL, +}; + +/* * + * This structure is to store the src bit, div bit and prediv bit + * positions of the peripheral clocks of the src and div registers + */ +struct clk_bit_info { + s8 src_bit; /* offset in register to clock source field */ + s8 n_src_bits; /* number of bits in 'src_bit' field */ + s8 div_bit; + s8 prediv_bit; +}; + +/* FIXME(dhendrix) conflicts with stp-common/clk.h */ +#if 0 +unsigned long get_pll_clk(int pllreg); +unsigned long get_arm_clk(void); +void set_mmc_clk(int dev_index, unsigned int div); +#endif + +/** + * get the clk frequency of the required peripherial + * + * @param peripherial Peripherial id + * + * @return frequency of the peripherial clk + */ +unsigned long clock_get_periph_rate(enum periph_id peripheral); + +#endif |