Some investigations have shown, that the original dediprog driver waits about 200ms after setting voltage up and before setting voltage down. This patch adds those delays. It helps flash chips to come up in time.
Signed-off-by: Nico Huber <[email protected]> Index: dediprog.c =================================================================== --- dediprog.c (Revision 1541) +++ dediprog.c (Arbeitskopie) @@ -131,6 +131,9 @@ msg_pdbg("Setting SPI voltage to %u.%03u V\n", millivolt / 1000, millivolt % 1000); + if (voltage_selector == 0) + /* Wait some time as the original driver does. */ + programmer_delay(200 * 1000); ret = usb_control_msg(dediprog_handle, 0x42, 0x9, voltage_selector, 0xff, NULL, 0x0, DEFAULT_TIMEOUT); if (ret != 0x0) { @@ -138,6 +141,9 @@ voltage_selector); return 1; } + if (voltage_selector != 0) + /* Wait some time as the original driver does. */ + programmer_delay(200 * 1000); return 0; } _______________________________________________ flashrom mailing list [email protected] http://www.flashrom.org/mailman/listinfo/flashrom
