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Diffstat (limited to 'Documentation/fpga/fpga-mgr.txt')
| -rw-r--r-- | Documentation/fpga/fpga-mgr.txt | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/fpga/fpga-mgr.txt b/Documentation/fpga/fpga-mgr.txt index 087924f2b20c..86ee5078fd03 100644 --- a/Documentation/fpga/fpga-mgr.txt +++ b/Documentation/fpga/fpga-mgr.txt | |||
| @@ -169,7 +169,10 @@ The programming sequence is: | |||
| 169 | 2. .write (may be called once or multiple times) | 169 | 2. .write (may be called once or multiple times) |
| 170 | 3. .write_complete | 170 | 3. .write_complete |
| 171 | 171 | ||
| 172 | The .write_init function will prepare the FPGA to receive the image data. | 172 | The .write_init function will prepare the FPGA to receive the image data. The |
| 173 | buffer passed into .write_init will be atmost .initial_header_size bytes long, | ||
| 174 | if the whole bitstream is not immediately available then the core code will | ||
| 175 | buffer up at least this much before starting. | ||
| 173 | 176 | ||
| 174 | The .write function writes a buffer to the FPGA. The buffer may be contain the | 177 | The .write function writes a buffer to the FPGA. The buffer may be contain the |
| 175 | whole FPGA image or may be a smaller chunk of an FPGA image. In the latter | 178 | whole FPGA image or may be a smaller chunk of an FPGA image. In the latter |