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>

diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
index c723dbb0a6947221790eadfc14b0776645f40902..df8452acc5bee63dfe1a8fea278472ca165ee701 100644 (file)
--- 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)