From 2bec19feabd53cba75e9dab0e79afbe868a37113 Mon Sep 17 00:00:00 2001
From: Lennert Buytenhek <buytenh@wantstofly.org>
Date: Wed, 15 Oct 2008 22:02:44 -0700
Subject: [PATCH] orion_spi: handle 88F6183 erratum

Add support to orion_spi for the 88F6183 ARM SoC by adding code to work
around a 6183-specific erratum.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 drivers/spi/orion_spi.c       | 5 +++++
 include/linux/spi/orion_spi.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/spi/orion_spi.c b/drivers/spi/orion_spi.c
index b872bfaf4bd..014becb7d53 100644
--- a/drivers/spi/orion_spi.c
+++ b/drivers/spi/orion_spi.c
@@ -364,6 +364,11 @@ static int orion_spi_setup(struct spi_device *spi)
 		return -EINVAL;
 	}
 
+	/* Fix ac timing if required.   */
+	if (orion_spi->spi_info->enable_clock_fix)
+		orion_spi_setbits(orion_spi, ORION_SPI_IF_CONFIG_REG,
+				  (1 << 14));
+
 	if (spi->bits_per_word == 0)
 		spi->bits_per_word = 8;
 
diff --git a/include/linux/spi/orion_spi.h b/include/linux/spi/orion_spi.h
index b4d9fa6f797..decf6d8c77b 100644
--- a/include/linux/spi/orion_spi.h
+++ b/include/linux/spi/orion_spi.h
@@ -11,6 +11,7 @@
 
 struct orion_spi_info {
 	u32	tclk;		/* no <linux/clk.h> support yet */
+	u32	enable_clock_fix;
 };
 
 
-- 
2.41.1