kernel-ark/arch/arm/mach-at91/clock.h
Ludovic Desroches 8f4b47949f ARM: at91: introduce SAMA5 support
This patch introduces the SAMA5 support and a generic board file for SAMA5
devices. It also updates the PMC driver to manage clock division which is a
requirement since some peripherals can't work at the bus frequency on SAMA5.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-26 12:18:04 +01:00

50 lines
1.1 KiB
C

/*
* linux/arch/arm/mach-at91/clock.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clkdev.h>
#define CLK_TYPE_PRIMARY 0x1
#define CLK_TYPE_PLL 0x2
#define CLK_TYPE_PROGRAMMABLE 0x4
#define CLK_TYPE_PERIPHERAL 0x8
#define CLK_TYPE_SYSTEM 0x10
struct clk {
struct list_head node;
const char *name; /* unique clock name */
struct clk_lookup cl;
unsigned long rate_hz;
unsigned div; /* parent clock divider */
struct clk *parent;
unsigned pid; /* peripheral ID */
u32 pmc_mask;
void (*mode)(struct clk *, int);
unsigned id:3; /* PCK0..4, or 32k/main/a/b */
unsigned type; /* clock type */
u16 users;
};
extern int __init clk_register(struct clk *clk);
extern struct clk mck;
extern struct clk utmi_clk;
#define CLKDEV_CON_ID(_id, _clk) \
{ \
.con_id = _id, \
.clk = _clk, \
}
#define CLKDEV_CON_DEV_ID(_con_id, _dev_id, _clk) \
{ \
.con_id = _con_id, \
.dev_id = _dev_id, \
.clk = _clk, \
}