From 2c25de1ed5c6f8f6bba3b5ec506f430d8a883a83 Mon Sep 17 00:00:00 2001
From: mattis fjallstrom <mattis@acm.org>
Date: Thu, 16 Jul 2015 18:34:05 -0700
Subject: Fix for tps65910 errata, fixes issue with early enabling of voltages.

Change-Id: Ib32c79ffce144f6bb817d6f3bd885b4dff9013fb
---
 board/olio/h1/h1.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/board/olio/h1/h1.c b/board/olio/h1/h1.c
index 3c039a65b..e69797638 100644
--- a/board/olio/h1/h1.c
+++ b/board/olio/h1/h1.c
@@ -109,7 +109,16 @@ static int tps65910_voltages_init(void)
 	struct vsel_map_t *p = tps65910_volt;
 	int i, ret;
 
-	if (i2c_probe(TPS65910_CTRL_I2C_ADDR))
+	/*
+	 * dummy i2c bus access is required to workaround tps65910 errata
+	 * "Glitch on SDA-SCL not managed correctly by the I2C IP"
+	 */
+	i = 2;
+	do
+		ret = i2c_probe(TPS65910_CTRL_I2C_ADDR);
+	while (ret && --i);
+
+	if (ret)
 		return -1;
 
 	/* Tell the TPS65910 to use i2c */
-- 
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