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am3517_evm: activate Ethernet PHY

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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>
This commit is contained in:
Yegor Yefremov 2013-12-11 15:41:11 +01:00 committed by Tom Rini
parent dc427369b1
commit 6a1df37349
3 changed files with 38 additions and 1 deletions
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32
board/logicpd/am3517evm/am3517evm.c
View File

@ -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;
}

2
board/logicpd/am3517evm/am3517evm.h
View File

@ -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 */\

5
include/configs/am3517_evm.h
View File

@ -57,6 +57,11 @@
* Hardware drivers
*/
/*
* OMAP GPIO configuration
*/
#define CONFIG_OMAP_GPIO
/*
* NS16550 Configuration
*/