RTEMS: bsps/arm/imx/include/arm/freescale/imx/imx_ccmvar.h Source File

| RTEMS 5.4-rc2

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imx_ccmvar.h
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: head/sys/arm/freescale/imx/imx_ccmvar.h 292565 2015-12-21 20:17:24Z gonzo $
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
46uint32_t imx_ccm_ipg_hz(void);
47uint32_t imx_ccm_perclk_hz(void);
48uint32_t imx_ccm_sdhci_hz(void);
49uint32_t imx_ccm_uart_hz(void);
50uint32_t imx_ccm_ahb_hz(void);
51#ifdef __rtems__
52uint32_t imx_ccm_ecspi_hz(void);
53#endif /* __rtems__ */
54
55#ifndef __rtems__
56void imx_ccm_usb_enable(device_t _usbdev);
57void imx_ccm_usbphy_enable(device_t _phydev);
58void imx_ccm_ssi_configure(device_t _ssidev);
59void imx_ccm_hdmi_enable(void);
60void imx_ccm_ipu_enable(int ipu);
61
62/* Routines to get and set the arm clock root divisor register. */
63uint32_t imx_ccm_get_cacrr(void);
64void imx_ccm_set_cacrr(uint32_t _divisor);
65#endif /* __rtems__ */
66
67#endif
device
Definition: rtemscompat1.h:15