From eec567a67e00d1ed8d941e9098b7d421f4091abf Mon Sep 17 00:00:00 2001
From: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
Date: Tue, 19 Aug 2008 03:01:19 +0600
Subject: [PATCH] ColdFire: I2C fix for multiple platforms
Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
---
cpu/mcf5227x/speed.c | 4 ++++
cpu/mcf523x/cpu_init.c | 4 ++--
cpu/mcf523x/speed.c | 4 ++++
cpu/mcf52x2/cpu_init.c | 12 +++++++++++-
cpu/mcf52x2/speed.c | 8 ++++++++
cpu/mcf532x/speed.c | 5 +++++
cpu/mcf5445x/speed.c | 4 ++++
cpu/mcf547x_8x/speed.c | 5 +++++
include/asm-m68k/fsl_i2c.h | 9 ---------
include/configs/M5235EVB.h | 7 +++++--
include/configs/M5253DEMO.h | 11 +++++++++++
include/configs/M5275EVB.h | 3 +++
12 files changed, 62 insertions(+), 14 deletions(-)
diff --git a/cpu/mcf5227x/speed.c b/cpu/mcf5227x/speed.c
index 78c946f258..0baf9bcd99 100644
--- a/cpu/mcf5227x/speed.c
+++ b/cpu/mcf5227x/speed.c
@@ -116,5 +116,9 @@ int get_clocks(void)
gd->bus_clk = gd->flb_clk;
}
+#ifdef CONFIG_FSL_I2C
+ gd->i2c1_clk = gd->bus_clk;
+#endif
+
return (0);
}
diff --git a/cpu/mcf523x/cpu_init.c b/cpu/mcf523x/cpu_init.c
index 55c9cd356d..8ab5b8ed8b 100644
--- a/cpu/mcf523x/cpu_init.c
+++ b/cpu/mcf523x/cpu_init.c
@@ -110,8 +110,8 @@ void cpu_init_f(void)
#endif
#ifdef CONFIG_FSL_I2C
- gpio->par_feci2c &= ~(GPIO_PAR_FECI2C_SCL_MASK | GPIO_PAR_FECI2C_SDA_MASK);
- gpio->par_feci2c |= (GPIO_PAR_FECI2C_SCL_I2CSCL | GPIO_PAR_FECI2C_SDA_I2CSDA);
+ CFG_I2C_PINMUX_REG &= CFG_I2C_PINMUX_CLR;
+ CFG_I2C_PINMUX_REG |= CFG_I2C_PINMUX_SET;
#endif
icache_enable();
diff --git a/cpu/mcf523x/speed.c b/cpu/mcf523x/speed.c
index 247d3188bb..1bda2d482e 100644
--- a/cpu/mcf523x/speed.c
+++ b/cpu/mcf523x/speed.c
@@ -45,5 +45,9 @@ int get_clocks(void)
gd->bus_clk = CFG_CLK;
gd->cpu_clk = (gd->bus_clk * 2);
+#ifdef CONFIG_FSL_I2C
+ gd->i2c1_clk = gd->bus_clk;
+#endif
+
return (0);
}
diff --git a/cpu/mcf52x2/cpu_init.c b/cpu/mcf52x2/cpu_init.c
index 3cacb55f77..68aefe9151 100644
--- a/cpu/mcf52x2/cpu_init.c
+++ b/cpu/mcf52x2/cpu_init.c
@@ -80,6 +80,15 @@ void cpu_init_f(void)
mbar_writeShort(MCFSIM_CSCR0, CFG_CSCR0);
mbar_writeLong(MCFSIM_CSMR0, CFG_CSMR0);
+#ifdef CONFIG_FSL_I2C
+ CFG_I2C_PINMUX_REG = CFG_I2C_PINMUX_REG & CFG_I2C_PINMUX_CLR;
+ CFG_I2C_PINMUX_REG |= CFG_I2C_PINMUX_SET;
+#ifdef CFG_I2C2_OFFSET
+ CFG_I2C2_PINMUX_REG &= CFG_I2C2_PINMUX_CLR;
+ CFG_I2C2_PINMUX_REG |= CFG_I2C2_PINMUX_SET;
+#endif
+#endif
+
/* enable instruction cache now */
icache_enable();
}
@@ -322,7 +331,8 @@ void cpu_init_f(void)
#endif /* #ifndef CONFIG_MONITOR_IS_IN_RAM */
#ifdef CONFIG_FSL_I2C
- gpio_reg->par_feci2c = 0x000F;
+ CFG_I2C_PINMUX_REG &= CFG_I2C_PINMUX_CLR;
+ CFG_I2C_PINMUX_REG |= CFG_I2C_PINMUX_SET;
#endif
/* enable instruction cache now */
diff --git a/cpu/mcf52x2/speed.c b/cpu/mcf52x2/speed.c
index f6edd5b6fa..4cb8f9300d 100644
--- a/cpu/mcf52x2/speed.c
+++ b/cpu/mcf52x2/speed.c
@@ -82,5 +82,13 @@ int get_clocks (void)
#else
gd->bus_clk = gd->cpu_clk;
#endif
+
+#ifdef CONFIG_FSL_I2C
+ gd->i2c1_clk = gd->bus_clk;
+#ifdef CFG_I2C2_OFFSET
+ gd->i2c2_clk = gd->bus_clk;
+#endif
+#endif
+
return (0);
}
diff --git a/cpu/mcf532x/speed.c b/cpu/mcf532x/speed.c
index 001b9f42d6..a11e425cab 100644
--- a/cpu/mcf532x/speed.c
+++ b/cpu/mcf532x/speed.c
@@ -212,5 +212,10 @@ int get_clocks(void)
{
gd->bus_clk = clock_pll(CFG_CLK / 1000, 0) * 1000;
gd->cpu_clk = (gd->bus_clk * 3);
+
+#ifdef CONFIG_FSL_I2C
+ gd->i2c1_clk = gd->bus_clk;
+#endif
+
return (0);
}
diff --git a/cpu/mcf5445x/speed.c b/cpu/mcf5445x/speed.c
index f677f3ced0..6711a1d7c8 100644
--- a/cpu/mcf5445x/speed.c
+++ b/cpu/mcf5445x/speed.c
@@ -209,5 +209,9 @@ int get_clocks(void)
#endif
}
+#ifdef CONFIG_FSL_I2C
+ gd->i2c1_clk = gd->bus_clk;
+#endif
+
return (0);
}
diff --git a/cpu/mcf547x_8x/speed.c b/cpu/mcf547x_8x/speed.c
index 389e7c99f5..28fe657298 100644
--- a/cpu/mcf547x_8x/speed.c
+++ b/cpu/mcf547x_8x/speed.c
@@ -39,5 +39,10 @@ int get_clocks(void)
gd->bus_clk = CFG_CLK;
gd->cpu_clk = (gd->bus_clk * 2);
+
+#ifdef CONFIG_FSL_I2C
+ gd->i2c1_clk = gd->bus_clk;
+#endif
+
return (0);
}
diff --git a/include/asm-m68k/fsl_i2c.h b/include/asm-m68k/fsl_i2c.h
index 4f71341327..2bc9bf434e 100644
--- a/include/asm-m68k/fsl_i2c.h
+++ b/include/asm-m68k/fsl_i2c.h
@@ -72,15 +72,6 @@ typedef struct fsl_i2c {
#define I2C_DR 0xFF
#define I2C_DR_SHIFT 0
#define I2C_DR_RES ~(I2C_DR)
-
- u8 dfsrr; /* I2C digital filter sampling rate register */
- u8 res5[3];
-#define I2C_DFSRR 0x3F
-#define I2C_DFSRR_SHIFT 0
-#define I2C_DFSRR_RES ~(I2C_DR)
-
- /* Fill out the reserved block */
- u8 res6[0xE8];
} fsl_i2c_t;
#endif /* _ASM_I2C_H_ */
diff --git a/include/configs/M5235EVB.h b/include/configs/M5235EVB.h
index e8361321f1..b32eabe9a3 100644
--- a/include/configs/M5235EVB.h
+++ b/include/configs/M5235EVB.h
@@ -102,12 +102,15 @@
/* I2C */
#define CONFIG_FSL_I2C
-#define CONFIG_HARD_I2C /* I2C with hw support */
-#undef CONFIG_SOFT_I2C /* I2C bit-banged */
+#define CONFIG_HARD_I2C /* I2C with hw support */
+#undef CONFIG_SOFT_I2C /* I2C bit-banged */
#define CFG_I2C_SPEED 80000
#define CFG_I2C_SLAVE 0x7F
#define CFG_I2C_OFFSET 0x00000300
#define CFG_IMMR CFG_MBAR
+#define CFG_I2C_PINMUX_REG (gpio->par_qspi)
+#define CFG_I2C_PINMUX_CLR ~(GPIO_PAR_FECI2C_SCL_MASK | GPIO_PAR_FECI2C_SDA_MASK)
+#define CFG_I2C_PINMUX_SET (GPIO_PAR_FECI2C_SCL_I2CSCL | GPIO_PAR_FECI2C_SDA_I2CSDA)
/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
#define CONFIG_BOOTDELAY 1 /* autoboot after 5 seconds */
diff --git a/include/configs/M5253DEMO.h b/include/configs/M5253DEMO.h
index f2c2317f50..9f78f6ebc8 100644
--- a/include/configs/M5253DEMO.h
+++ b/include/configs/M5253DEMO.h
@@ -118,6 +118,17 @@
#define CONFIG_HOSTNAME M5253DEMO
+/* I2C */
+#define CONFIG_FSL_I2C
+#define CONFIG_HARD_I2C /* I2C with hw support */
+#define CFG_I2C_SPEED 80000
+#define CFG_I2C_SLAVE 0x7F
+#define CFG_I2C_OFFSET 0x00000280
+#define CFG_IMMR CFG_MBAR
+#define CFG_I2C_PINMUX_REG (*(u32 *) (CFG_MBAR+0x19C))
+#define CFG_I2C_PINMUX_CLR (0xFFFFE7FF)
+#define CFG_I2C_PINMUX_SET (0)
+
#define CFG_PROMPT "=> "
#define CFG_LONGHELP /* undef to save memory */
diff --git a/include/configs/M5275EVB.h b/include/configs/M5275EVB.h
index c1750b532a..430af6bfa2 100644
--- a/include/configs/M5275EVB.h
+++ b/include/configs/M5275EVB.h
@@ -118,6 +118,9 @@
#define CFG_I2C_SLAVE 0x7F
#define CFG_I2C_OFFSET 0x00000300
#define CFG_IMMR CFG_MBAR
+#define CFG_I2C_PINMUX_REG (gpio_reg->par_feci2c)
+#define CFG_I2C_PINMUX_CLR (0xFFF0)
+#define CFG_I2C_PINMUX_SET (0x000F)
#ifdef CONFIG_MCFFEC
#define CONFIG_ETHADDR 00:06:3b:01:41:55
--
2.39.5