diff options
| author | Nico Huber <nico.h@gmx.de> | 2019-03-21 23:17:06 +0100 |
|---|---|---|
| committer | Nico Huber <nico.h@gmx.de> | 2019-05-30 13:46:41 +0000 |
| commit | 10490b98e2c8b7b0c6c275b6b809d48697f6ee2f (patch) | |
| tree | 6c34b5d4ed95c3f50f8280dd2a94268f1d1b6ccf /Documentation/mainboard/roda/rk9 | |
| parent | 2b99a01e0d28ae3c755480e12beb130e8b1550ac (diff) | |
mb/roda/rk9: Document flash header
Change-Id: I5bd131635340ffa0c6b8979fc8e263fc5f09fdc5
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32025
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Diffstat (limited to 'Documentation/mainboard/roda/rk9')
| -rw-r--r-- | Documentation/mainboard/roda/rk9/flash_header.md | 23 |
1 files changed, 23 insertions, 0 deletions
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 + +---+ |