Commit 4b914dc0 authored by Ivo van Doorn's avatar Ivo van Doorn Committed by Jeff Garzik

[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: default avatarIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 9467d64b
...@@ -39,6 +39,12 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom) ...@@ -39,6 +39,12 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
{ {
eeprom->reg_data_clock = 1; eeprom->reg_data_clock = 1;
eeprom->register_write(eeprom); 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); udelay(1);
} }
...@@ -46,6 +52,12 @@ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom) ...@@ -46,6 +52,12 @@ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
{ {
eeprom->reg_data_clock = 0; eeprom->reg_data_clock = 0;
eeprom->register_write(eeprom); 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); udelay(1);
} }
......
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