From 8a584c8a7f6f0198642c6f3d3a23a20f45ca0223 Mon Sep 17 00:00:00 2001
From: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Date: Tue, 8 Jul 2014 15:31:03 +0530
Subject: [PATCH] zynqmp: gem: Set data bus width to 64bit for arm64

Set the data bus width to 64-bit AMBA Databus width in config register.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---
 drivers/net/zynq_gem.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
index c723dbb0a6..df8452acc5 100644
--- a/drivers/net/zynq_gem.c
+++ b/drivers/net/zynq_gem.c
@@ -58,7 +58,14 @@
 #define ZYNQ_GEM_NWCFG_MDCCLKDIV	0x000080000 /* Div pclk by 32, 80MHz */
 #define ZYNQ_GEM_NWCFG_MDCCLKDIV2	0x0000c0000 /* Div pclk by 48, 120MHz */
 
-#define ZYNQ_GEM_NWCFG_INIT		(ZYNQ_GEM_NWCFG_FDEN | \
+#ifdef CONFIG_ARM64
+# define ZYNQ_GEM_DBUS_WIDTH	(1 << 21) /* 64 bit bus */
+#else
+# define ZYNQ_GEM_DBUS_WIDTH	(0 << 21) /* 32 bit bus */
+#endif
+
+#define ZYNQ_GEM_NWCFG_INIT		(ZYNQ_GEM_DBUS_WIDTH | \
+					ZYNQ_GEM_NWCFG_FDEN | \
 					ZYNQ_GEM_NWCFG_FSREM | \
 					ZYNQ_GEM_NWCFG_MDCCLKDIV)
 
-- 
2.39.5