openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[PATCH] eeprom_93cx6: shorten pulse timing to match spec 

93cx6 datasheet available here:

        http://ww1.microchip.com/downloads/en/DeviceDoc/21749F.pdf

Figure 1-1 and Table 1-2 on pages 4-5 indicate that both Clock High
Time and Clock Low Time have largest minimum times of 450ns.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville 2007-06-11 21:37:46 -04:00 committed by Jeff Garzik
parent 605bebe23b
commit 7e9400f178
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/misc/eeprom_93cx6.c
View File

@ -42,10 +42,10 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
/*
* Add a short delay for the pulse to work.
* According to the specifications the minimal time
* should be 450ns so a 1us delay is sufficient.
* According to the specifications the "maximum minimum"
* time should be 450ns.
*/
udelay(1);
ndelay(450);
}
static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)