[PATCH v2 9/9] mfd: wm5110: Add delay before releasing reset line

Charles Keepax
2015-04-17T08:49:17Z

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>
---
drivers/mfd/arizona-core.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index def3ad3..e1f0a68 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -259,6 +259,15 @@ 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:
+ msleep(5);
+ break;
+ default:
+ break;
+ }
+
gpio_set_value_cansleep(arizona->pdata.reset, 1);
msleep(1);
}
--
1.7.2.5