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/*
* Marvell EBU SoC common clock handling
*
* Copyright (C) 2012 Marvell
*
* Gregory CLEMENT <gregory.clement@free-electrons.com>
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
* Andrew Lunn <andrew@lunn.ch>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef __CLK_MVEBU_COMMON_H_
#define __CLK_MVEBU_COMMON_H_
#include <linux/kernel.h>
extern spinlock_t ctrl_gating_lock;
struct device_node;
struct coreclk_ratio {
int id;
const char *name;
};
struct coreclk_soc_desc {
u32 (*get_tclk_freq)(void __iomem *sar);
u32 (*get_cpu_freq)(void __iomem *sar);
void (*get_clk_ratio)(void __iomem *sar, int id, int *mult, int *div);
bool (*is_sscg_enabled)(void __iomem *sar);
u32 (*fix_sscg_deviation)(u32 system_clk);
const struct coreclk_ratio *ratios;
int num_ratios;
};
struct clk_gating_soc_desc {
const char *name;
const char *parent;
int bit_idx;
unsigned long flags;
};
void __init mvebu_coreclk_setup(struct device_node *np,
const struct coreclk_soc_desc *desc);
void __init mvebu_clk_gating_setup(struct device_node *np,
const struct clk_gating_soc_desc *desc);
/*
* This function is shared among the Kirkwood, Armada 370, Armada XP
* and Armada 375 SoC
*/
u32 kirkwood_fix_sscg_deviation(u32 system_clk);
#endif
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