1 files changed, 123 insertions, 0 deletions
diff --git a/target/linux/coldfire/patches/088-m547x_8x_i2c_timeout_fix.patch b/target/linux/coldfire/patches/088-m547x_8x_i2c_timeout_fix.patch
new file mode 100644
index 0000000000..dbc3c994bb
--- /dev/null
+++ b/target/linux/coldfire/patches/088-m547x_8x_i2c_timeout_fix.patch
@@ -0,0 +1,123 @@
+From b9607c9083b767eac26df1d39a030f3cba5d3ae3 Mon Sep 17 00:00:00 2001
+From: Kurt Mahan <kmahan@freescale.com>
+Date: Fri, 18 Jul 2008 12:40:04 -0600
+Subject: [PATCH] Increase timeouts on I2C bus.
+
+LTIBName: m547x-8x-i2c-timeout-fix
+Signed-off-by: Shrek Wu <b16972@freescale.com>
+---
+ drivers/i2c/busses/i2c-mcf548x.c |   40 +++++++++++++++++++++++++++++--------
+ 1 files changed, 31 insertions(+), 9 deletions(-)
+
+--- a/drivers/i2c/busses/i2c-mcf548x.c
++++ b/drivers/i2c/busses/i2c-mcf548x.c
+@@ -43,8 +43,8 @@ static struct i2c_adapter i2c_mcf_board_
+ 	.id = I2C_HW_MPC107,
+ 	.algo_data = &i2c_mcf_board_data,
+ 	.class = I2C_CLASS_HWMON,
+-	.timeout = 1,
+-	.retries = 1
++	.timeout = 100,
++	.retries = 2
+ };
+ /*
+  *  static void i2c_start()
+@@ -105,7 +105,7 @@ wait_for_bb(
+ 	for (i = 0; i < adap->timeout; i++) {
+ 		if (!(MCF_I2SR & MCF_I2SR_IBB))
+ 			return 0;
+-		udelay(10);
++		udelay(100);
+ 	}
+ 	printk(KERN_ERR "%s: timeout", __FUNCTION__);
+ 	return -ETIMEDOUT;
+@@ -124,7 +124,7 @@ wait_for_not_bb(
+ 	for (i = 0; i < adap->timeout; i++) {
+ 		if (MCF_I2SR & MCF_I2SR_IBB)
+ 			return 0;
+-		udelay(10);
++		udelay(100);
+ 	}
+ 	printk(KERN_ERR "%s: timeout", __FUNCTION__);
+ 	return -ETIMEDOUT;
+@@ -146,7 +146,7 @@ wait_xfer_done(
+ 			MCF_I2SR &= ~MCF_I2SR_IIF;
+ 			return 0;
+ 		}
+-		udelay(1);
++		udelay(10);
+ 	}
+ 	printk(KERN_ERR "%s: timeout", __FUNCTION__);
+ 	return -ETIMEDOUT;
+@@ -166,7 +166,7 @@ i2c_set_addr(
+ ) {
+ 	unsigned short flags = msg->flags;
+ 	unsigned char addr;
+-
++	MCF_I2CR |= MCF_I2CR_MTX;
+ 	if ((flags & I2C_M_TEN)) {
+ 		/* 10 bit address not supported yet */
+ 		return -EIO;
+@@ -269,7 +269,7 @@ mcf_sendbytes(
+ 		i2c_stop(adap);
+ 		wait_for_bb(adap);
+ 	} else {
+-		i2c_repstart(adap);
++	/*	i2c_repstart(adap);*/
+ 	}
+ 
+ 	return (i);
+@@ -330,7 +330,7 @@ mcf_readbytes(
+ 		i2c_stop(adap);
+ 		wait_for_bb(adap);
+ 	} else {
+-		i2c_repstart(adap);
++	/*	i2c_repstart(adap);*/
+ 	}
+ 
+ 	return (i+1);
+@@ -380,6 +380,27 @@ mcf_xfer(
+ 	wait_for_bb(adap);
+ 
+ 	for (i = 0; ret >= 0 && i < num; i++) {
++		if (MCF_I2SR & MCF_I2SR_IBB) {
++			MCF_I2ICR = 0x00;
++			MCF_I2CR  = 0x00;
++                	MCF_I2CR  = 0x0A;
++                	timeout = MCF_I2DR;
++                	MCF_I2SR  = 0x00;
++                	MCF_I2CR  = 0x00;
++			MCF_I2ICR = 0x01;
++		}
++		/* setup SCL clock */
++		MCF_I2FDR = get_clock(adap);
++		/* set slave address */
++		MCF_I2AR = get_own(adap);
++		/* enable I2C module */
++		MCF_I2CR = MCF_I2CR_IEN;
++
++		MCF_I2CR |= MCF_I2CR_TXAK;
++
++		/* Check for bus busy */
++		wait_for_bb(adap);
++
+ 		pmsg = &msgs[i];
+ 
+ 		printk(KERN_DEBUG "i2c-algo-mcf: Doing %s %d bytes "
+@@ -388,7 +409,7 @@ mcf_xfer(
+ 			pmsg->len, pmsg->addr, i + 1, num);
+ 
+ 		/* Send START */
+-		if (i == 0)
++		/*if (i == 0)*/
+ 			i2c_start(adap);
+ 
+ 		/* Wait for Bus Busy */
+@@ -440,6 +461,7 @@ mcf_xfer(
+ 					"%d bytes.\n", ret);
+ 			}
+ 		}
++	MCF_I2CR = 0;
+ 	}
+ 
+ 	/* Disable I2C module */