From: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Date: Wed, 3 Apr 2013 11:53:37 +0000 (+0100)
Subject: mfd: arizona: Wait for internal clocks to startup after reset
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c25feaa53cca696321540ca0f8564bf484224cac;p=linux-beck.git

mfd: arizona: Wait for internal clocks to startup after reset

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---

diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index ae10af798843..41856b4c0d17 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -529,8 +529,10 @@ int arizona_dev_init(struct arizona *arizona)
 		goto err_enable;
 	}
 
-	if (arizona->pdata.reset)
+	if (arizona->pdata.reset) {
 		gpio_set_value_cansleep(arizona->pdata.reset, 1);
+		msleep(1);
+	}
 
 	regcache_cache_only(arizona->regmap, false);
 
@@ -589,6 +591,8 @@ int arizona_dev_init(struct arizona *arizona)
 			goto err_reset;
 		}
 
+		msleep(1);
+
 		ret = regcache_sync(arizona->regmap);
 		if (ret != 0) {
 			dev_err(dev, "Failed to sync device: %d\n", ret);