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 63 /* Compatibility with the FEC Ethernet driver */ 64 #define imx_get_fecclk() mxc_get_clock(MXC_AHB_CLK) 65 66 #endif /* __CLOCK_H__ */ 67