Improve configuration of FPGA subsystem

[karo-tx-uboot.git] / README

diff --git a/README b/README
index 26f93c21a769d0ccfd4dff6ba0a63a5a8b8dec2a..9a8b3b903d1f6a6689e9b20fa859da1efa853e58 100644 (file)
--- a/README
+++ b/README
@@ -1377,14 +1377,23 @@ The following options need to be configured:
                SPI configuration items (port pins to use, etc). For
                an example, see include/configs/sacsng.h.
 
-- FPGA Support: CONFIG_FPGA_COUNT
+- FPGA Support: CONFIG_FPGA
 
-               Specify the number of FPGA devices to support.
+               Enables FPGA subsystem.
+
+               CONFIG_FPGA_<vendor>
+
+               Enables support for specific chip vendors.
+               (ALTERA, XILINX)
 
-               CONFIG_FPGA
+               CONFIG_FPGA_<family>
 
-               Used to specify the types of FPGA devices.  For example,
-               #define CONFIG_FPGA  CFG_XILINX_VIRTEX2
+               Enables support for FPGA family.
+               (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX)
+
+               CONFIG_FPGA_COUNT
+
+               Specify the number of FPGA devices to support.
 
                CFG_FPGA_PROG_FEEDBACK