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Increase delay in probe_jedec() after Product ID Entry to 10ms

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We should follow data sheet timing, even if chips have been tested to answer
faster in the field.

Corresponding to flashrom svn r273 and coreboot v2 svn r3387.

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Peter Stuge <peter@stuge.se>
This commit is contained in:
Peter Stuge 2008-06-24 02:09:09 +00:00
parent da4e5f3623
commit 8653b00461
1 changed files with 2 additions and 3 deletions
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5
jedec.c
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@ -100,10 +100,9 @@ int probe_jedec(struct flashchip *flash)
myusec_delay(10); myusec_delay(10);
*(volatile uint8_t *)(bios + 0x5555) = 0x90; *(volatile uint8_t *)(bios + 0x5555) = 0x90;
/* Older chips may need up to 100 us to respond. The ATMEL 29C020 /* Older chips may need up to 100 us to respond. The ATMEL 29C020
* needs 10 ms according to the data sheet, but it has been tested * needs 10 ms according to the data sheet.
* to work reliably with 2 ms.
*/ */
myusec_delay(2000); myusec_delay(10000);
/* Read product ID */ /* Read product ID */
id1 = *(volatile uint8_t *)bios; id1 = *(volatile uint8_t *)bios;