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ARM: at91: do not configure at91sam9g10 twi pio as open-drain

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As indicated in the datasheet, TWD and TWCK must not be programmed as
open-drain.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nikolaus Voss <n.voss@weinmann.de>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
This commit is contained in:
Ludovic Desroches 2012-09-12 08:42:13 +02:00 committed by Wolfram Sang
parent 774c8018d2
commit 94e734655f
1 changed files with 3 additions and 3 deletions
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6
arch/arm/mach-at91/at91sam9261_devices.c
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@ -327,16 +327,16 @@ void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
/* IP version is not the same on 9261 and g10 */
if (cpu_is_at91sam9g10()) {
at91sam9261_twi_device.name = "i2c-at91sam9g10";
/* I2C PIO must not be configured as open-drain on this chip */
} else {
at91sam9261_twi_device.name = "i2c-at91sam9261";
at91_set_multi_drive(AT91_PIN_PA7, 1);
at91_set_multi_drive(AT91_PIN_PA8, 1);
}
/* pins used for TWI interface */
at91_set_A_periph(AT91_PIN_PA7, 0); /* TWD */
at91_set_multi_drive(AT91_PIN_PA7, 1);
at91_set_A_periph(AT91_PIN_PA8, 0); /* TWCK */
at91_set_multi_drive(AT91_PIN_PA8, 1);
i2c_register_board_info(0, devices, nr_devices);
platform_device_register(&at91sam9261_twi_device);