1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il> 4 * 5 * Authors: Igor Grinberg <grinberg@compulab.co.il> 6 */ 7 8#include <common.h> 9#include <netdev.h> 10#include <linux/delay.h> 11 12#include <asm/io.h> 13#include <linux/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} 94