1 /*
2  * Freescale i.MX23/i.MX28 Clock
3  *
4  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
5  * on behalf of DENX Software Engineering GmbH
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20  *
21  */
22 
23 #ifndef __CLOCK_H__
24 #define __CLOCK_H__
25 
26 enum mxc_clock {
27 	MXC_ARM_CLK = 0,
28 	MXC_AHB_CLK,
29 	MXC_IPG_CLK,
30 	MXC_EMI_CLK,
31 	MXC_GPMI_CLK,
32 	MXC_IO0_CLK,
33 	MXC_IO1_CLK,
34 	MXC_XTAL_CLK,
35 	MXC_SSP0_CLK,
36 #ifdef CONFIG_MX28
37 	MXC_SSP1_CLK,
38 	MXC_SSP2_CLK,
39 	MXC_SSP3_CLK,
40 #endif
41 };
42 
43 enum mxs_ioclock {
44 	MXC_IOCLK0 = 0,
45 	MXC_IOCLK1,
46 };
47 
48 enum mxs_sspclock {
49 	MXC_SSPCLK0 = 0,
50 #ifdef CONFIG_MX28
51 	MXC_SSPCLK1,
52 	MXC_SSPCLK2,
53 	MXC_SSPCLK3,
54 #endif
55 };
56 
57 uint32_t mxc_get_clock(enum mxc_clock clk);
58 
59 void mxs_set_ioclk(enum mxs_ioclock io, uint32_t freq);
60 void mxs_set_sspclk(enum mxs_sspclock ssp, uint32_t freq, int xtal);
61 void mxs_set_ssp_busclock(unsigned int bus, uint32_t freq);
62 void mxs_set_lcdclk(uint32_t freq);
63 
64 /* Compatibility with the FEC Ethernet driver */
65 #define	imx_get_fecclk()	mxc_get_clock(MXC_AHB_CLK)
66 
67 #endif	/* __CLOCK_H__ */
68