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 1569905..24be6ea 100644
--- 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 @@
*/
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 @@
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;
}