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Diffstat (limited to 'Documentation/mainboard')
| -rw-r--r-- | Documentation/mainboard/index.md | 4 | ||||
| -rw-r--r-- | Documentation/mainboard/roda/rk9/flash_header.md | 23 |
2 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/mainboard/index.md b/Documentation/mainboard/index.md index 7e0dab2f4c..fb4f5022aa 100644 --- a/Documentation/mainboard/index.md +++ b/Documentation/mainboard/index.md @@ -81,6 +81,10 @@ The boards in this section are not real mainboards, but emulators. - [MS-7707](msi/ms7707/ms7707.md) +## Roda + +- [RK9 Flash Header](roda/rk9/flash_header.md) + ## SiFive - [SiFive HiFive Unleashed](sifive/hifive-unleashed.md) diff --git a/Documentation/mainboard/roda/rk9/flash_header.md b/Documentation/mainboard/roda/rk9/flash_header.md new file mode 100644 index 0000000000..c2978cbe68 --- /dev/null +++ b/Documentation/mainboard/roda/rk9/flash_header.md @@ -0,0 +1,23 @@ +Roda RK9 Flash Header +===================== + +There is a 5x2 pin, 1.27mm pitch header *J1* south of the BIOS flash. It +follows the pinout of the Dediprog adaptor board: + + +------+ + | 1 2 | 1: HOLD 2 2: CS 2 + | 3 4 | 3: CS 1 4: VCC + | 5 6 | 5: MISO 6: HOLD 1 + | 7 8 | 7: 8: CLK + | 9 10 | 9: GND 10: MOSI + +------+ + +Pins 3 to 10 directly map to the regular SPI flash pinout. + +There is also a *JP17* around. Ideally, it should be closed during +programming (isolates the SPI bus from the southbridge): + + +---+ + | 1 | 1: SF100-I/O3 + | 2 | 2: GND + +---+ |