1 /*- 2 * Copyright (c) 2014 Ian Lepore <ian@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef IMX_CCMVAR_H 30 #define IMX_CCMVAR_H 31 32 /* 33 * We need a clock management system that works across unrelated SoCs and 34 * devices. For now, to keep imx development moving, define some barebones 35 * functionality that can be shared within the imx family by having each SoC 36 * implement functions with a common name. 37 * 38 * The usb enable functions are best-effort. They turn on the usb otg, host, 39 * and phy clocks in a SoC-specific manner, but it may take a lot more than that 40 * to make usb work on a given board. In particular, it can require specific 41 * pinmux setup of gpio pins connected to external phy parts, voltage regulators 42 * and overcurrent detectors, and so on. On such boards, u-boot or other early 43 * board setup code has to handle those things. 44 */ 45 46 uint32_t imx_ccm_ipg_hz(void); 47 uint32_t imx_ccm_perclk_hz(void); 48 uint32_t imx_ccm_sdhci_hz(void); 49 uint32_t imx_ccm_uart_hz(void); 50 uint32_t imx_ccm_ahb_hz(void); 51 52 void imx_ccm_usb_enable(device_t _usbdev); 53 void imx_ccm_usbphy_enable(device_t _phydev); 54 void imx_ccm_ssi_configure(device_t _ssidev); 55 void imx_ccm_hdmi_enable(void); 56 void imx_ccm_ipu_enable(int ipu); 57 58 /* Routines to get and set the arm clock root divisor register. */ 59 uint32_t imx_ccm_get_cacrr(void); 60 void imx_ccm_set_cacrr(uint32_t _divisor); 61 62 #endif 63