redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

mfd: wm5110: Add delay before releasing reset line 

On the wm5110 it is important the reset line is held for slightly longer
to ensure the device starts up well. This patch adds a 5mS delay for
this.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
hifive-unleashed-5.1
Charles Keepax 2015-05-11 13:58:10 +01:00 committed by Lee Jones
parent e6cb73410a
commit 121c075c1f
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/mfd/arizona-core.c
View File

@ -259,6 +259,16 @@ static inline void arizona_enable_reset(struct arizona *arizona)
static void arizona_disable_reset(struct arizona *arizona)
{
if (arizona->pdata.reset) {
switch (arizona->type) {
case WM5110:
case WM8280:
/* Meet requirements for minimum reset duration */
msleep(5);
break;
default:
break;
}
gpio_set_value_cansleep(arizona->pdata.reset, 1);
msleep(1);
}