[U-Boot] [PATCH 2/2] ARM: at91sam9x5: enable MCI0 support for 9x5ek board.

[Andreas Bießmann]

Dear Josh Wu,

On 07.09.2012 12:39, Josh Wu wrote:
> Signed-off-by: Josh Wu <josh.wu at atmel.com>
> ---
>  arch/arm/cpu/arm926ejs/at91/at91sam9x5_devices.c |   13 +++++++++++++
>  board/atmel/at91sam9x5ek/at91sam9x5ek.c          |   16 ++++++++++++++++
>  include/configs/at91sam9x5ek.h                   |    8 ++++++++
>  3 files changed, 37 insertions(+)
> 
> diff --git a/arch/arm/cpu/arm926ejs/at91/at91sam9x5_devices.c b/arch/arm/cpu/arm926ejs/at91/at91sam9x5_devices.c
> index 6d77219..3608e7c 100644
> --- a/arch/arm/cpu/arm926ejs/at91/at91sam9x5_devices.c
> +++ b/arch/arm/cpu/arm926ejs/at91/at91sam9x5_devices.c
> @@ -230,3 +230,16 @@ void at91_macb_hw_init(void)
>  #endif
>  }
>  #endif
> +
> +#if defined(CONFIG_GENERIC_ATMEL_MCI)

This define is not necessary, we have -ffunction-sections and --gc-sections.

> +void at91_mci_hw_init(void)
> +{

I favor initializing the required clocks here.

> +	/* Initialize the MCI0 */
> +	at91_set_a_periph(AT91_PIO_PORTA, 17, 1);	/* MCCK */
> +	at91_set_a_periph(AT91_PIO_PORTA, 16, 1);	/* MCCDA */
> +	at91_set_a_periph(AT91_PIO_PORTA, 15, 1);	/* MCDA0 */
> +	at91_set_a_periph(AT91_PIO_PORTA, 18, 1);	/* MCDA1 */
> +	at91_set_a_periph(AT91_PIO_PORTA, 19, 1);	/* MCDA2 */
> +	at91_set_a_periph(AT91_PIO_PORTA, 20, 1);	/* MCDA3 */
> +}
> +#endif
> diff --git a/board/atmel/at91sam9x5ek/at91sam9x5ek.c b/board/atmel/at91sam9x5ek/at91sam9x5ek.c
> index 06028aa..d1f05ef 100644
> --- a/board/atmel/at91sam9x5ek/at91sam9x5ek.c
> +++ b/board/atmel/at91sam9x5ek/at91sam9x5ek.c
> @@ -42,6 +42,9 @@
>  #ifdef CONFIG_ATMEL_SPI
>  #include <spi.h>
>  #endif
> +#ifdef CONFIG_GENERIC_ATMEL_MCI

This define is not necessary at all, we should be able to include header
without any impact if their functionality is not required.

> +#include <mmc.h>
> +#endif
>  
>  DECLARE_GLOBAL_DATA_PTR;
>  
> @@ -258,6 +261,19 @@ void spi_cs_deactivate(struct spi_slave *slave)
>  }
>  #endif /* CONFIG_ATMEL_SPI */
>  
> +#ifdef CONFIG_GENERIC_ATMEL_MCI
> +int board_mmc_init(bd_t *bd)
> +{
> +	/* Enable clock */
> +	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
> +	writel(1 << ATMEL_ID_HSMCI0, &pmc->pcer);

I favor moving the clock enable to at91_mci_hw_init()

> +
> +	at91_mci_hw_init();
> +
> +	return atmel_mci_init((void *)ATMEL_BASE_HSMCI0);
> +}
> +#endif
> +
>  int board_early_init_f(void)
>  {
>  	at91_seriald_hw_init();
> diff --git a/include/configs/at91sam9x5ek.h b/include/configs/at91sam9x5ek.h
> index 1ceb31a..974e08f 100644
> --- a/include/configs/at91sam9x5ek.h
> +++ b/include/configs/at91sam9x5ek.h
> @@ -136,6 +136,14 @@
>  #define CONFIG_CMD_UBIFS
>  #endif
>  
> +/* MMC */
> +#define CONFIG_MMC
> +#define CONFIG_CMD_MMC
> +#define CONFIG_CMD_FAT
> +#define CONFIG_GENERIC_MMC
> +#define CONFIG_GENERIC_ATMEL_MCI
> +#define CONFIG_DOS_PARTITION
> +
>  /* Ethernet */
>  #define CONFIG_MACB
>  #define CONFIG_RMII
>