coreboot-libre-fam15h-rdimm/Documentation/mainboard/roda/rk9/flash_header.md

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2024-03-04 11:14:53 +01:00
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
+---+