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From: "Teresa Gámez" <t.gamez@phytec.de>
To: barebox@lists.infradead.org
Subject: [PATCHv3 3/4] omap3_spi: Set the correct CS number for AM33xx
Date: Wed, 19 Jun 2013 09:09:44 +0200	[thread overview]
Message-ID: <1371625785-27704-3-git-send-email-t.gamez@phytec.de> (raw)
In-Reply-To: <1371625785-27704-1-git-send-email-t.gamez@phytec.de>

Changed the number of CS for AM33xx boards to 2.

Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
---
changes since v3:
        - splitted the former "omap3_spi: Add CS check for AM335x"
          patch into two
	- Set correct number of CS here

 drivers/spi/omap3_spi.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c
index 508e2d9..1a92565 100644
--- a/drivers/spi/omap3_spi.c
+++ b/drivers/spi/omap3_spi.c
@@ -359,16 +359,24 @@ static int omap3_spi_probe(struct device_d *dev)
 	 * McSPI3 has 2 CS (bus 3, cs 0 - 1)
 	 * McSPI4 has 1 CS (bus 4, cs 0)
 	 *
+	 * AM335x McSPI has 2 busses with 2 chip selects:
+	 * McSPI0 has 2 CS (bus 0, cs 0 - 1)
+	 * McSPI1 has 2 CS (bus 1, cs 0 - 1)
+	 *
 	 * The board code has to make sure that it does not use
 	 * invalid buses or chip selects.
 	 */
 
 	master->bus_num = dev->id;
-	master->num_chipselect = 4;
+
+	if (IS_ENABLED(CONFIG_ARCH_OMAP3))
+		master->num_chipselect = 4;
+	else
+		master->num_chipselect = 2;
 	master->setup = omap3_spi_setup;
 	master->transfer = omap3_spi_transfer;
 
-	omap3_master->regs = dev_request_mem_region(dev, 0);;
+	omap3_master->regs = dev_request_mem_region(dev, 0);
 
 	spi_reset(master);
 
-- 
1.7.0.4


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  parent reply	other threads:[~2013-06-19  7:10 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-19  7:09 [PATCHv3 1/4] ARM: OMAP: AM33xx: Add muxing function for spi0 Teresa Gámez
2013-06-19  7:09 ` [PATCHv3 2/4] omap3_spi: Remove CS check in driver Teresa Gámez
2013-06-19  7:09 ` Teresa Gámez [this message]
2013-06-19  7:09 ` [PATCHv3 4/4] ARM: OMAP: pcm051: Add spi flash support Teresa Gámez
2013-06-19 19:51 ` [PATCHv3 1/4] ARM: OMAP: AM33xx: Add muxing function for spi0 Sascha Hauer

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