From: Jay Cheng <jacheng@nvidia.com>
Date: Fri, 26 Nov 2010 17:08:39 +0000 (-0500)
Subject: [tegra i2c] add de-bounce cycles.
X-Git-Tag: firefly_0821_release~9833^2~99^2~5
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=61186dc145606f61c5988ccc3c5abb24bf27b543;p=firefly-linux-kernel-4.4.55.git

[tegra i2c] add de-bounce cycles.

Change-Id: I3549105bb1d1a7803a300849ddba9c17dad1efba
Signed-off-by: Ken Radtke <kradtke@nvidia.com>
---

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
old mode 100644
new mode 100755
index 999ae2d30e30..b7481f496ec3
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -35,6 +35,7 @@
 #define BYTES_PER_FIFO_WORD 4
 
 #define I2C_CNFG				0x000
+#define I2C_CNFG_DEBOUNCE_CNT_SHIFT		12
 #define I2C_CNFG_PACKET_MODE_EN			(1<<10)
 #define I2C_CNFG_NEW_MASTER_FSM			(1<<11)
 #define I2C_STATUS				0x01C
@@ -312,7 +313,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
 	if (i2c_dev->is_dvc)
 		tegra_dvc_init(i2c_dev);
 
-	val = I2C_CNFG_NEW_MASTER_FSM | I2C_CNFG_PACKET_MODE_EN;
+	val = I2C_CNFG_NEW_MASTER_FSM | I2C_CNFG_PACKET_MODE_EN | (0x2 << I2C_CNFG_DEBOUNCE_CNT_SHIFT);
 	i2c_writel(i2c_dev, val, I2C_CNFG);
 	i2c_writel(i2c_dev, 0, I2C_INT_MASK);
 	tegra_i2c_set_clk(i2c_dev, i2c_dev->last_bus_clk);