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AT91: fix EMAC gpio init in at91sam9260_devices.c 

The AT91SAM9G20 BOOT ROM apparently initializes PA23 and PA24 to multi drive
(open drain). Revert this, if those pins are going to be used for MII.

Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
This commit is contained in:
Reinhard Meyer 2010-12-01 05:49:53 +01:00
parent 2aed9d14cc
commit accef43145
1 changed files with 5 additions and 0 deletions
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5
arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c
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@ -204,6 +204,11 @@ void at91_macb_hw_init(void)
#else
at91_set_b_periph(AT91_PIO_PORTA, 23, 0); /* ETX2 */
at91_set_b_periph(AT91_PIO_PORTA, 24, 0); /* ETX3 */
#if defined(CONFIG_AT91SAM9G20)
/* 9G20 BOOT ROM initializes those pins to multi-drive, undo that */
at91_set_pio_multi_drive(AT91_PIO_PORTA, 23, 0);
at91_set_pio_multi_drive(AT91_PIO_PORTA, 24, 0);
#endif
#endif
at91_set_b_periph(AT91_PIO_PORTA, 22, 0); /* ETXER */
#endif