Patchwork [U-Boot] mx28evk: Add I2C support

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Submitter Fabio Estevam
Date May 7, 2012, 3:42 p.m.
Message ID <1336405354-15410-1-git-send-email-fabio.estevam@freescale.com>
Download mbox | patch
Permalink /patch/157346/
State Accepted
Delegated to: Heiko Schocher
Headers show

Comments

Fabio Estevam - May 7, 2012, 3:42 p.m.
Add I2C support.

Tested by placing a 24LC16 EEPROM into the U50 slot which comes empty from factory.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
 board/freescale/mx28evk/iomux.c |    3 +++
 include/configs/mx28evk.h       |    8 ++++++++
 2 files changed, 11 insertions(+), 0 deletions(-)
Marek Vasut - May 7, 2012, 4:09 p.m.
Dear Fabio Estevam,

> Add I2C support.
> 
> Tested by placing a 24LC16 EEPROM into the U50 slot which comes empty from
> factory.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

Acked-by: Marek Vasut <marex@denx.de>

> ---
>  board/freescale/mx28evk/iomux.c |    3 +++
>  include/configs/mx28evk.h       |    8 ++++++++
>  2 files changed, 11 insertions(+), 0 deletions(-)
> 
> diff --git a/board/freescale/mx28evk/iomux.c
> b/board/freescale/mx28evk/iomux.c index 396761b..4201097 100644
> --- a/board/freescale/mx28evk/iomux.c
> +++ b/board/freescale/mx28evk/iomux.c
> @@ -138,6 +138,9 @@ const iomux_cfg_t iomux_setup[] = {
>  	MX28_PAD_SSP2_MISO__SSP2_D0 | MUX_CONFIG_SSP2,
>  	MX28_PAD_SSP2_SS0__SSP2_D3 |
>  		(MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP),
> +	/* I2C */
> +	MX28_PAD_I2C0_SCL__I2C0_SCL,
> +	MX28_PAD_I2C0_SDA__I2C0_SDA,
>  };
> 
>  void board_init_ll(void)
> diff --git a/include/configs/mx28evk.h b/include/configs/mx28evk.h
> index b165285..26e24e2 100644
> --- a/include/configs/mx28evk.h
> +++ b/include/configs/mx28evk.h
> @@ -67,6 +67,7 @@
>  #define CONFIG_CMD_SF
>  #define CONFIG_CMD_SPI
>  #define CONFIG_CMD_USB
> +#define CONFIG_CMD_I2C
> 
>  /*
>   * Memory configurations
> @@ -179,6 +180,13 @@
>  #define	CONFIG_USB_STORAGE
>  #endif
> 
> +/* I2C */
> +#ifdef CONFIG_CMD_I2C
> +#define CONFIG_I2C_MXS
> +#define CONFIG_HARD_I2C
> +#define CONFIG_SYS_I2C_SPEED	400000
> +#endif
> +
>  /*
>   * SPI
>   */

Best regards,
Marek Vasut
Wolfgang Denk - June 21, 2012, 7:57 p.m.
Dear Fabio Estevam,

In message <1336405354-15410-1-git-send-email-fabio.estevam@freescale.com> you wrote:
> Add I2C support.
> 
> Tested by placing a 24LC16 EEPROM into the U50 slot which comes empty from factory.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---
>  board/freescale/mx28evk/iomux.c |    3 +++
>  include/configs/mx28evk.h       |    8 ++++++++
>  2 files changed, 11 insertions(+), 0 deletions(-)

I'm adding the I2C custodian to Cc: list....

Best regards,

Wolfgang Denk

Patch

diff --git a/board/freescale/mx28evk/iomux.c b/board/freescale/mx28evk/iomux.c
index 396761b..4201097 100644
--- a/board/freescale/mx28evk/iomux.c
+++ b/board/freescale/mx28evk/iomux.c
@@ -138,6 +138,9 @@  const iomux_cfg_t iomux_setup[] = {
 	MX28_PAD_SSP2_MISO__SSP2_D0 | MUX_CONFIG_SSP2,
 	MX28_PAD_SSP2_SS0__SSP2_D3 |
 		(MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP),
+	/* I2C */
+	MX28_PAD_I2C0_SCL__I2C0_SCL,
+	MX28_PAD_I2C0_SDA__I2C0_SDA,
 };
 
 void board_init_ll(void)
diff --git a/include/configs/mx28evk.h b/include/configs/mx28evk.h
index b165285..26e24e2 100644
--- a/include/configs/mx28evk.h
+++ b/include/configs/mx28evk.h
@@ -67,6 +67,7 @@ 
 #define CONFIG_CMD_SF
 #define CONFIG_CMD_SPI
 #define CONFIG_CMD_USB
+#define CONFIG_CMD_I2C
 
 /*
  * Memory configurations
@@ -179,6 +180,13 @@ 
 #define	CONFIG_USB_STORAGE
 #endif
 
+/* I2C */
+#ifdef CONFIG_CMD_I2C
+#define CONFIG_I2C_MXS
+#define CONFIG_HARD_I2C
+#define CONFIG_SYS_I2C_SPEED	400000
+#endif
+
 /*
  * SPI
  */