igep00x0: Cleanup ethernet support

- move chip reset to separate function
- use CONFIG_SMC911X_BASE instead of hardcoded value
- remove unneeded local variable from board_eth_init.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Enric Balletbo Serra <enric.balletbo@collabora.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

board/isee/igep00x0/igep00x0.c

@@ -101,6 +101,19 @@ void get_board_mem_timings(struct board_sdrc_timings *timings)
 #endif
 
 #if defined(CONFIG_CMD_NET)
+
+static void reset_net_chip(int gpio)
+{
+	if (!gpio_request(gpio, "eth nrst")) {
+		gpio_direction_output(gpio, 1);
+		udelay(1);
+		gpio_set_value(gpio, 0);
+		udelay(40);
+		gpio_set_value(gpio, 1);
+		mdelay(10);
+	}
+}
+
 /*
  * Routine: setup_net_chip
  * Description: Setting up the configuration GPMC registers specific to the
@@ -110,8 +123,8 @@ static void setup_net_chip(void)
 {
 	struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
 
-	enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5], 0x2C000000,
+	enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
-			GPMC_SIZE_16M);
+			CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
 
 	/* Enable off mode for NWE in PADCONF_GPMC_NWE register */
 	writew(readw(&ctrl_base->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
@@ -121,15 +134,7 @@ static void setup_net_chip(void)
 	writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
 		&ctrl_base->gpmc_nadv_ale);
 
-	/* Make GPIO 64 as output pin and send a magic pulse through it */
+	reset_net_chip(64);
-	if (!gpio_request(64, "")) {
-		gpio_direction_output(64, 0);
-		gpio_set_value(64, 1);
-		udelay(1);
-		gpio_set_value(64, 0);
-		udelay(1);
-		gpio_set_value(64, 1);
-	}
 }
 #else
 static inline void setup_net_chip(void) {}
@@ -200,10 +205,10 @@ void set_muxconf_regs(void)
 #if defined(CONFIG_CMD_NET)
 int board_eth_init(bd_t *bis)
 {
-	int rc = 0;
 #ifdef CONFIG_SMC911X
-	rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
+	return smc911x_initialize(0, CONFIG_SMC911X_BASE);
+#else
+	return 0;
 #endif
-	return rc;
 }
 #endif