net: emaclite: Support OF initialization

Support new CONFIG_OF_CONTROL option where device
probing is done based on device tree description.

Signed-off-by: Michal Simek <monstr@monstr.eu>
CC: Joe Hershberger <joe.hershberger@gmail.com>

diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c
index d5bd737..d890d60 100644 (file)
--- a/drivers/net/xilinx_emaclite.c
+++ b/drivers/net/xilinx_emaclite.c
@@ -28,6 +28,9 @@
 #include <config.h>
 #include <malloc.h>
 #include <asm/io.h>
+#include <fdtdec.h>
+
+DECLARE_GLOBAL_DATA_PTR;
 
 #undef DEBUG
 
@@ -375,3 +378,30 @@ int xilinx_emaclite_initialize(bd_t *bis, unsigned long base_addr,
 
        return 1;
 }
+
+#ifdef CONFIG_OF_CONTROL
+int xilinx_emaclite_init(bd_t *bis)
+{
+       int offset = 0;
+       u32 ret = 0;
+       u32 reg;
+
+       do {
+               offset = fdt_node_offset_by_compatible(gd->fdt_blob, offset,
+                                       "xlnx,xps-ethernetlite-1.00.a");
+               if (offset != -1) {
+                       reg = fdtdec_get_addr(gd->fdt_blob, offset, "reg");
+                       if (reg != FDT_ADDR_T_NONE) {
+                               u32 rxpp = fdtdec_get_int(gd->fdt_blob, offset,
+                                                       "xlnx,rx-ping-pong", 0);
+                               u32 txpp = fdtdec_get_int(gd->fdt_blob, offset,
+                                                       "xlnx,tx-ping-pong", 0);
+                               ret |= xilinx_emaclite_initialize(bis, reg,
+                                                               txpp, rxpp);
+                       }
+               }
+       } while (offset != -1);
+
+       return ret;
+}
+#endif