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gerrit.cesnet.cz / github / trini / u-boot / 768ddeeecf7c49f97b6299e37c02332eba031270 / . / board / compulab / common / omap3_smc911x.c
blob: 45616619877a48a636278a19bb39b8710e2437d4 [file] [log] [blame]
Igor Grinberg9886c3d2014-11-03 11:32:21 +0200[diff] [blame]1/*
2 * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
3 *
4 * Authors: Igor Grinberg <grinberg@compulab.co.il>
5 *
6 * SPDX-License-Identifier: GPL-2.0+
7 */
8
9#include <common.h>
10#include <netdev.h>
11
12#include <asm/io.h>
13#include <asm/errno.h>
14#include <asm/arch/cpu.h>
15#include <asm/arch/mem.h>
16#include <asm/arch/sys_proto.h>
17#include <asm/gpio.h>
18
19#include "common.h"
20
21static u32 cl_omap3_smc911x_gpmc_net_config[GPMC_MAX_REG] = {
22 NET_GPMC_CONFIG1,
23 NET_GPMC_CONFIG2,
24 NET_GPMC_CONFIG3,
25 NET_GPMC_CONFIG4,
26 NET_GPMC_CONFIG5,
27 NET_GPMC_CONFIG6,
28 0
29};
30
31static void cl_omap3_smc911x_setup_net_chip_gmpc(int cs, u32 base_addr)
32{
33 struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
34
35 enable_gpmc_cs_config(cl_omap3_smc911x_gpmc_net_config,
36 &gpmc_cfg->cs[cs], base_addr, GPMC_SIZE_16M);
37
38 /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
39 writew(readw(&ctrl_base->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
40
41 /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
42 writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
43
44 /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
45 writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
46 &ctrl_base->gpmc_nadv_ale);
47}
48
49#ifdef CONFIG_OMAP_GPIO
50static int cl_omap3_smc911x_reset_net_chip(int gpio)
51{
52 int err;
53
54 if (!gpio_is_valid(gpio))
55 return -EINVAL;
56
57 err = gpio_request(gpio, "eth rst");
58 if (err)
59 return err;
60
61 /* Set gpio as output and send a pulse */
62 gpio_direction_output(gpio, 1);
63 udelay(1);
64 gpio_set_value(gpio, 0);
65 mdelay(40);
66 gpio_set_value(gpio, 1);
67 mdelay(1);
68
69 return 0;
70}
71#else /* !CONFIG_OMAP_GPIO */
72static inline int cl_omap3_smc911x_reset_net_chip(int gpio) { return 0; }
73#endif /* CONFIG_OMAP_GPIO */
74
75int cl_omap3_smc911x_init(int id, int cs, u32 base_addr,
76 int (*reset)(int), int rst_gpio)
77{
78 int ret;
79
80 cl_omap3_smc911x_setup_net_chip_gmpc(cs, base_addr);
81
82 if (reset)
83 reset(rst_gpio);
84 else
85 cl_omap3_smc911x_reset_net_chip(rst_gpio);
86
87 ret = smc911x_initialize(id, base_addr);
88 if (ret > 0)
89 return ret;
90
91 printf("Failed initializing SMC911x! ");
92 return 0;
93}