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-b...@emk-elektronik.de>
---
arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c
b/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c
index f699f4d..c1822b7 100644
--- a/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c
+++ b/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c
@@ -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
--
1.5.6.5
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