am3517_evm: activate Ethernet PHY

Pin 30 is connected to PHY's RESET# signal, so it must be
put to high. Otherwise PHY won't be found via MDIO interface.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>

diff --git a/board/logicpd/am3517evm/am3517evm.c b/board/logicpd/am3517evm/am3517evm.c
index 15699054603a1d18c9bd549a350bb27cc623a66b..24be6eabfcd2d2b09d93db8ab70ce0df8057e97b 100644 (file)
--- a/board/logicpd/am3517evm/am3517evm.c
+++ b/board/logicpd/am3517evm/am3517evm.c
@@ -22,6 +22,7 @@
 #include <asm/arch/musb.h>
 #include <asm/mach-types.h>
 #include <asm/errno.h>
+#include <asm/gpio.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
 #include <linux/usb/musb.h>
@@ -31,6 +32,9 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define AM3517_IP_SW_RESET     0x48002598
+#define CPGMACSS_SW_RST                (1 << 1)
+
 /*
  * Routine: board_init
  * Description: Early hardware init.
@@ -98,6 +102,9 @@ static void am3517_evm_musb_init(void)
  */
 int misc_init_r(void)
 {
+       volatile unsigned int ctr;
+       u32 reset;
+
 #ifdef CONFIG_SYS_I2C_OMAP34XX
        i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
 #endif
@@ -106,6 +113,31 @@ int misc_init_r(void)
 
        am3517_evm_musb_init();
 
+       /* activate PHY reset */
+       gpio_direction_output(30, 0);
+       gpio_set_value(30, 0);
+
+       ctr  = 0;
+       do {
+               udelay(1000);
+               ctr++;
+       } while (ctr < 300);
+
+       /* deactivate PHY reset */
+       gpio_set_value(30, 1);
+
+       /* allow the PHY to stabilize and settle down */
+       ctr = 0;
+       do {
+               udelay(1000);
+               ctr++;
+       } while (ctr < 300);
+
+       /* ensure that the module is out of reset */
+       reset = readl(AM3517_IP_SW_RESET);
+       reset &= (~CPGMACSS_SW_RST);
+       writel(reset,AM3517_IP_SW_RESET);
+
        return 0;
 }
 

diff --git a/board/logicpd/am3517evm/am3517evm.h b/board/logicpd/am3517evm/am3517evm.h
index 704af847a739fcf9e9c88d5954d3df6aa296a70a..d407d66ae69b3e8f5ff98921cb7652255be78470 100644 (file)
--- a/board/logicpd/am3517evm/am3517evm.h
+++ b/board/logicpd/am3517evm/am3517evm.h
@@ -315,7 +315,7 @@ const omap3_sysinfo sysinfo = {
        MUX_VAL(CP(SYS_CLKREQ),         (IEN  | PTD | DIS | M0)) \
        MUX_VAL(CP(SYS_NIRQ),           (IEN  | PTU | EN  | M0)) \
        /*SYS_nRESWARM */\
-       MUX_VAL(CP(SYS_NRESWARM),       (IDIS | PTU | DIS | M4)) \
+       MUX_VAL(CP(SYS_NRESWARM),       (IDIS | PTU | EN | M4)) \
                                                        /* - GPIO30 */\
        MUX_VAL(CP(SYS_BOOT0),          (IEN  | PTD | DIS | M4)) /*GPIO_2*/\
                                                         /* - PEN_IRQ */\

diff --git a/include/configs/am3517_evm.h b/include/configs/am3517_evm.h
index 1fa477aac835d381e902f132f659cd053ca322db..b8b99c806fa535e583dde2fc43f3c6b1291fcb46 100644 (file)
--- a/include/configs/am3517_evm.h
+++ b/include/configs/am3517_evm.h
@@ -57,6 +57,11 @@
  * Hardware drivers
  */
 
+/*
+ * OMAP GPIO configuration
+ */
+#define CONFIG_OMAP_GPIO
+
 /*
  * NS16550 Configuration
  */