2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2021 Alstom Group.
5 * Copyright (c) 2021 Semihalf.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #ifndef _ENETC_MDIO_H_
29 #define _ENETC_MDIO_H_
32 #define ENETC_MDIO_CFG 0x0 /* MDIO configuration and status */
33 #define MDIO_CFG_CLKDIV(x) ((((x) >> 1) & 0xff) << 8)
35 #define ENETC_MDIO_CTL 0x4 /* MDIO control */
36 #define MDIO_CTL_DEV_ADDR(x) ((x) & 0x1f)
37 #define MDIO_CTL_PORT_ADDR(x) (((x) & 0x1f) << 5)
39 #define ENETC_MDIO_DATA 0x8 /* MDIO data */
40 #define MDIO_DATA(x) ((x) & 0xffff)
42 #define ENETC_MDIO_ADDR 0xc /* MDIO address */
44 #define MDIO_CFG_BSY BIT(0)
45 #define MDIO_CFG_RD_ER BIT(1)
46 #define MDIO_CFG_ENC45 BIT(6)
47 #define MDIO_CFG_NEG BIT(23)
48 #define MDIO_CTL_READ BIT(15)
49 #define MII_ADDR_C45 BIT(30)
51 /* MDIO configuration and helpers */
52 #define ENETC_MDC_DIV 258
53 #define ENETC_TIMEOUT 1000
55 int enetc_mdio_write(struct resource*, int, int, int, int);
56 int enetc_mdio_read(struct resource*, int, int, int);