From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Subject: [PATCH 8/8] at91rm9200: fix spi cs support
Date: Tue, 6 Nov 2012 20:33:36 +0100 [thread overview]
Message-ID: <1352230416-9396-8-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <1352230416-9396-1-git-send-email-plagnioj@jcrosoft.com>
the rm9200 have a errata the cs0 must be used via hw cs not gpio
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
arch/arm/mach-at91/at91rm9200_devices.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c
index 8cb2f57..c9ceef9 100644
--- a/arch/arm/mach-at91/at91rm9200_devices.c
+++ b/arch/arm/mach-at91/at91rm9200_devices.c
@@ -182,7 +182,12 @@ void at91_add_device_spi(int spi_id, struct at91_spi_platform_data *pdata)
cs_pin = pdata->chipselect[i];
/* enable chip-select pin */
- if (cs_pin > 0)
+ if (!gpio_is_valid(cs_pin))
+ continue;
+
+ if (cs_pin == AT91_PIN_PA3)
+ at91_set_A_periph(cs_pin, 0);
+ else
at91_set_gpio_output(cs_pin, 1);
}
--
1.7.10.4
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next prev parent reply other threads:[~2012-11-06 20:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-06 19:30 [PATCH 0/8] atmtel: fix spi driver + rm9200 Jean-Christophe PLAGNIOL-VILLARD
2012-11-06 19:33 ` [PATCH 1/8] atmel_spi: use device id as bus num Jean-Christophe PLAGNIOL-VILLARD
2012-11-06 19:33 ` [PATCH 2/8] atmel_spi: split transfert to atmel_spi_do_xfer Jean-Christophe PLAGNIOL-VILLARD
2012-11-13 14:45 ` Thomas Petazzoni
2012-11-06 19:33 ` [PATCH 3/8] atmel_spi: after setup the cs need to be disable Jean-Christophe PLAGNIOL-VILLARD
2012-11-06 19:33 ` [PATCH 4/8] atmel_spi: add sanity check in setup Jean-Christophe PLAGNIOL-VILLARD
2012-11-06 19:33 ` [PATCH 5/8] atmel_spi: fix cs support Jean-Christophe PLAGNIOL-VILLARD
2012-11-06 19:33 ` [PATCH 6/8] atmel_spi: drop setup during transfer Jean-Christophe PLAGNIOL-VILLARD
2012-11-06 19:33 ` [PATCH 7/8] atmel_spi: add cs change support Jean-Christophe PLAGNIOL-VILLARD
2012-11-06 19:33 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2012-11-12 7:36 ` [PATCH 0/8] atmtel: fix spi driver + rm9200 Sascha Hauer
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