58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
|
/*
|
||
|
|
* 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
|