From: shc_work@mail.ru (Alexander Shiyan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 3/3] can: mcp251x: Allow tuning SPI mode and limit maximal SPI speed
Date: Mon, 19 Aug 2013 15:39:21 +0400 [thread overview]
Message-ID: <1376912361-22133-3-git-send-email-shc_work@mail.ru> (raw)
In-Reply-To: <1376912361-22133-1-git-send-email-shc_work@mail.ru>
Patch allow to use different mode settings for SPI (MODE3 for example)
and limit maximal speed according to IC datasheet.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
---
drivers/net/can/mcp251x.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c
index a48d3df..c08edc7 100644
--- a/drivers/net/can/mcp251x.c
+++ b/drivers/net/can/mcp251x.c
@@ -1082,7 +1082,11 @@ static int mcp251x_can_probe(struct spi_device *spi)
SET_NETDEV_DEV(net, &spi->dev);
/* Configure the SPI bus */
- spi->mode = SPI_MODE_0;
+ spi->mode = spi->mode ? : SPI_MODE_0;
+ if (mcp251x_is_2510(spi))
+ spi->max_speed_hz = spi->max_speed_hz ? : 5 * 1000 * 1000;
+ else
+ spi->max_speed_hz = spi->max_speed_hz ? : 10 * 1000 * 1000;
spi->bits_per_word = 8;
spi_setup(spi);
--
1.8.1.5
next prev parent reply other threads:[~2013-08-19 11:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-19 11:39 [PATCH v2 1/3] can: mcp251x: Replace power callbacks with regulator API Alexander Shiyan
2013-08-19 11:39 ` [PATCH v2 2/3] can: mcp251x: Eliminate irq_flags from driver platform_data Alexander Shiyan
2013-08-20 8:58 ` Marc Kleine-Budde
2013-08-19 11:39 ` Alexander Shiyan [this message]
2013-08-20 8:59 ` [PATCH v2 3/3] can: mcp251x: Allow tuning SPI mode and limit maximal SPI speed Marc Kleine-Budde
2013-08-20 8:46 ` [PATCH v2 1/3] can: mcp251x: Replace power callbacks with regulator API Marc Kleine-Budde
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