[U-Boot] [PATCH 10/10 V4] DWMMC: SMDK5420: Disable SMU for eMMC

[Jaehoon Chung]

Hi 

On 09/27/2013 09:10 PM, Rajeshwari S Shinde wrote:
> SMDK5420 has a new Security Management Unit added
> for dwmmc driver, hence, configuring the control
> registers to support booting via eMMC.
> 
> Signed-off-by: Alim Akhtar <alim.akhtar at samsung.com>
> Signed-off-by: Rajeshwari Shinde <rajeshwari.s at samsung.com>
> ---
> Changes in V3:
> 	- New patch.
> Changes in V4:
> 	Added flag to dissble SMU
>  drivers/mmc/dw_mmc.c        | 10 ++++++++++
>  drivers/mmc/exynos_dw_mmc.c |  3 +++
>  include/dwmmc.h             | 15 +++++++++++++++
>  3 files changed, 28 insertions(+)
> 
> diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
> index a82ee17..2a8da5c 100644
> --- a/drivers/mmc/dw_mmc.c
> +++ b/drivers/mmc/dw_mmc.c
> @@ -300,6 +300,16 @@ static int dwmci_init(struct mmc *mmc)
>  	struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
>  	u32 fifo_size;
>  
> +	if (host->quirks & DWMCI_QUIRK_DISABLE_SMU) {
> +		dwmci_writel(host, EMMCP_MPSBEGIN0, 0);
> +		dwmci_writel(host, EMMCP_SEND0, 0);
> +		dwmci_writel(host, EMMCP_CTRL0,
> +			     MPSCTRL_SECURE_READ_BIT |
> +			     MPSCTRL_SECURE_WRITE_BIT |
> +			     MPSCTRL_NON_SECURE_READ_BIT |
> +			     MPSCTRL_NON_SECURE_WRITE_BIT | MPSCTRL_VALID);
> +	}
> +
>  	dwmci_writel(host, DWMCI_PWREN, 1);
>  
>  	if (!dwmci_wait_reset(host, DWMCI_RESET_ALL)) {
> diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
> index 4ef9fec..f7439a0 100644
> --- a/drivers/mmc/exynos_dw_mmc.c
> +++ b/drivers/mmc/exynos_dw_mmc.c
> @@ -62,6 +62,9 @@ int exynos_dwmci_add_port(int index, u32 regbase, int bus_width, u32 clksel)
>  	host->name = "EXYNOS DWMMC";
>  	host->ioaddr = (void *)regbase;
>  	host->buswidth = bus_width;
> +#ifdef CONFIG_EXYNOS5420
> +	host->quirks = DWMCI_QUIRK_DISABLE_SMU;
> +#endif
>  
>  	if (clksel) {
>  		host->clksel_val = clksel;
> diff --git a/include/dwmmc.h b/include/dwmmc.h
> index 08ced0b..00bceec 100644
> --- a/include/dwmmc.h
> +++ b/include/dwmmc.h
> @@ -49,6 +49,9 @@
>  #define DWMCI_DSCADDR		0x094
>  #define DWMCI_BUFADDR		0x098
>  #define DWMCI_DATA		0x200
> +#define EMMCP_MPSBEGIN0		0x1200
> +#define EMMCP_SEND0		0x1204
> +#define EMMCP_CTRL0		0x120C
>  
>  /* Interrupt Mask register */
>  #define DWMCI_INTMSK_ALL	0xffffffff
> @@ -123,6 +126,18 @@
>  #define DWMCI_BMOD_IDMAC_FB	(1 << 1)
>  #define DWMCI_BMOD_IDMAC_EN	(1 << 7)
>  
> +#define MPSCTRL_SECURE_READ_BIT		(0x1<<7)
> +#define MPSCTRL_SECURE_WRITE_BIT	(0x1<<6)
> +#define MPSCTRL_NON_SECURE_READ_BIT	(0x1<<5)
> +#define MPSCTRL_NON_SECURE_WRITE_BIT	(0x1<<4)
> +#define MPSCTRL_USE_FUSE_KEY		(0x1<<3)
> +#define MPSCTRL_ECB_MODE		(0x1<<2)
> +#define MPSCTRL_ENCRYPTION		(0x1<<1)
> +#define MPSCTRL_VALID			(0x1<<0)
> +
> +/* quirks */
> +#define DWMCI_QUIRK_DISABLE_SMU		(1 << 0)

These values are exynos5420 specifi, isn't?
Then i don't want to include into "dwmmc.h"

Best Regards,
Jaehoon Chung
> +
>  struct dwmci_host {
>  	char *name;
>  	void *ioaddr;
>