linux-kernel - [PATCH 4/7] serial: ifx6x60: set SPI max_speed

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Message-Id: <1294272313-15899-5-git-send-email-russ.gorby@intel.com>
Date:	Wed,  5 Jan 2011 16:05:10 -0800
From:	Russ Gorby <russ.gorby@...el.com>
To:	Greg@...r.kernel.org, Kroah-Hartman@...r.kernel.org,
	<gregkh@...e.de>, Vasiliy@...r.kernel.org, Kulikov@...r.kernel.org,
	<segoon@...nwall.com>, Alan@...r.kernel.org, Cox@...r.kernel.org,
	<alan@...ux.intel.com>, Russ@...r.kernel.org,
	Gorby@...r.kernel.org, <richardx.r.gorby@...el.com>,
	linux-kernel@...r.kernel.org
Cc:	suhail.ahmed@...el.com
Subject: [PATCH 4/7] serial: ifx6x60: set SPI max_speed_hz based on platform type

Platforms containing the 6260 can run up to 25Mhz.

For these platforms set max_speed_hz to 25Mhz.

Signed-off-by: Russ Gorby <russ.gorby@...el.com>
---
 drivers/serial/ifx6x60.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/serial/ifx6x60.c b/drivers/serial/ifx6x60.c
index fd10103..b54a990 100644
--- a/drivers/serial/ifx6x60.c
+++ b/drivers/serial/ifx6x60.c
@@ -722,7 +722,7 @@ static void ifx_spi_io(unsigned long data)
 		/* note len is BYTES, not transfers */
 		ifx_dev->spi_xfer.len = IFX_SPI_TRANSFER_SIZE;
 		ifx_dev->spi_xfer.cs_change = 0;
-		ifx_dev->spi_xfer.speed_hz = 12500000;
+		ifx_dev->spi_xfer.speed_hz = ifx_dev->spi_dev->max_speed_hz;
 		/* ifx_dev->spi_xfer.speed_hz = 390625; */
 		ifx_dev->spi_xfer.bits_per_word = spi_bpw;
 
@@ -984,6 +984,10 @@ static int ifx_spi_spi_probe(struct spi_device *spi)
 	ifx_dev->spi_timer.function = ifx_spi_timeout;
 	ifx_dev->spi_timer.data = (unsigned long)ifx_dev;
 	ifx_dev->is_6160 = pl_data->is_6160;
+	if (ifx_dev->is_6160)
+		spi->max_speed_hz = 12500000;
+	else
+		spi->max_speed_hz = 25000000;
 
 	/* ensure SPI protocol flags are initialized to enable transfer */
 	ifx_dev->spi_more = 0;
-- 
1.7.2.3

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