diff options
author | Ivo van Doorn <ivdoorn@gmail.com> | 2007-05-14 23:06:01 +0200 |
---|---|---|
committer | Jeff Garzik <jeff@garzik.org> | 2007-07-09 04:16:36 +0200 |
commit | 4b914dc0493edff19ff698a18198a173a14ba9d2 (patch) | |
tree | 9a1126599f664cea033b896ccea54acd37dc82af /drivers/misc/eeprom_93cx6.c | |
parent | [PATCH] Add 93cx6 eeprom library (diff) | |
download | linux-4b914dc0493edff19ff698a18198a173a14ba9d2.tar.xz linux-4b914dc0493edff19ff698a18198a173a14ba9d2.zip |
[PATCH] eeprom_93cx6: Add comment for 1us delay after pulse
This will add a comment for the 1us delay which is taken
after the pulse has been switched. The 1us delay is based
on the specifications so that should be made clear.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/misc/eeprom_93cx6.c')
-rw-r--r-- | drivers/misc/eeprom_93cx6.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c index bfcb43424dcd..0d6d742d42c3 100644 --- a/drivers/misc/eeprom_93cx6.c +++ b/drivers/misc/eeprom_93cx6.c @@ -39,6 +39,12 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom) { eeprom->reg_data_clock = 1; eeprom->register_write(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. + */ udelay(1); } @@ -46,6 +52,12 @@ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom) { eeprom->reg_data_clock = 0; eeprom->register_write(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. + */ udelay(1); } |