[U-Boot] [PATCH 1/4] zynqmp: gem: Set data bus with to 64bit for arm64

Michal Simek
2015-05-26T11:40:11Z

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>
---

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 c723dbb0a694..22195805e6d6 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_TARGET_XILINX_ZYNQMP
+# 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)

--
2.3.5