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| author | Liu Hui-R64343 <r64343@freescale.com> | 2011-01-03 22:27:39 +0000 |
|---|---|---|
| committer | Albert Aribaud <albert.aribaud@free.fr> | 2011-02-02 00:54:42 +0100 |
| commit | 127cec1889c7a9bb3c3eab521779b08657043a9a (patch) | |
| tree | 1dd744ee3ed938264489022757b96a3c6d4cd86c /drivers/i2c/mxc_i2c.c | |
| parent | 01643ec180d975192e2a1fcf964dd3239bebc75a (diff) | |
| download | u-boot-imx-127cec1889c7a9bb3c3eab521779b08657043a9a.zip u-boot-imx-127cec1889c7a9bb3c3eab521779b08657043a9a.tar.gz u-boot-imx-127cec1889c7a9bb3c3eab521779b08657043a9a.tar.bz2 | |
mxc_i2c: add support for MX53 processor
This patch add I2C support for Freescale MX53 processor
Signed-off-by: Jason Liu <r64343@freescale.com>
Diffstat (limited to 'drivers/i2c/mxc_i2c.c')
| -rw-r--r-- | drivers/i2c/mxc_i2c.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index 8e10fbb..1ebec14 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -26,8 +26,14 @@ #if defined(CONFIG_HARD_I2C) +#if defined(CONFIG_MX31) #include <asm/arch/mx31.h> #include <asm/arch/mx31-regs.h> +#endif + +#if defined(CONFIG_MX53) +#include <asm/arch/clock.h> +#endif #define IADR 0x00 #define IFDR 0x04 @@ -47,7 +53,7 @@ #define I2SR_IIF (1 << 1) #define I2SR_RX_NO_AK (1 << 0) -#ifdef CONFIG_SYS_I2C_MX31_PORT1 +#if defined(CONFIG_SYS_I2C_MX31_PORT1) #define I2C_BASE 0x43f80000 #define I2C_CLK_OFFSET 26 #elif defined (CONFIG_SYS_I2C_MX31_PORT2) @@ -56,8 +62,12 @@ #elif defined (CONFIG_SYS_I2C_MX31_PORT3) #define I2C_BASE 0x43f84000 #define I2C_CLK_OFFSET 30 +#elif defined(CONFIG_SYS_I2C_MX53_PORT1) +#define I2C_BASE I2C1_BASE_ADDR +#elif defined(CONFIG_SYS_I2C_MX53_PORT2) +#define I2C_BASE I2C2_BASE_ADDR #else -#error "define CONFIG_SYS_I2C_MX31_PORTx to use the mx31 I2C driver" +#error "define CONFIG_SYS_I2C_MXxx_PORTx to use the I2C driver" #endif #ifdef DEBUG @@ -72,11 +82,16 @@ static u16 div[] = { 30, 32, 36, 42, 48, 52, 60, 72, 80, 88, 104, 128, 144, void i2c_init(int speed, int unused) { - int freq = mx31_get_ipg_clk(); + int freq; int i; +#if defined(CONFIG_MX31) + freq = mx31_get_ipg_clk(); /* start the required I2C clock */ __REG(CCM_CGR0) = __REG(CCM_CGR0) | (3 << I2C_CLK_OFFSET); +#else + freq = mxc_get_clock(MXC_IPG_PERCLK); +#endif for (i = 0; i < 0x1f; i++) if (freq / div[i] <= speed) |