On 12/22/20 1:49 AM, Siew Chin Lim wrote:
> From: Chee Hong Ang <chee.hong....@intel.com>
>
> In non-secure mode (EL2), MMC driver calls the SMC/PSCI services
> provided by ATF to set SDMMC's DRVSEL and SMPLSEL.
>
> Signed-off-by: Chee Hong Ang <chee.hong....@intel.com>
> Signed-off-by: Siew Chin Lim <elly.siew.chin....@intel.com>
Reviewed-by: Jaehoon Chung <jh80.ch...@samsung.com>
Best Regards,
Jaehoon Chung
>
> ---
> v5
> ---
> Call secure register access helper function to write the secure register.
> Return error if fail to write the secure register.
> ---
> drivers/mmc/socfpga_dw_mmc.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/drivers/mmc/socfpga_dw_mmc.c b/drivers/mmc/socfpga_dw_mmc.c
> index 0a2845bcc2..7a485b492d 100644
> --- a/drivers/mmc/socfpga_dw_mmc.c
> +++ b/drivers/mmc/socfpga_dw_mmc.c
> @@ -6,6 +6,7 @@
> #include <common.h>
> #include <log.h>
> #include <asm/arch/clock_manager.h>
> +#include <asm/arch/secure_reg_helper.h>
> #include <asm/arch/system_manager.h>
> #include <clk.h>
> #include <dm.h>
> @@ -13,6 +14,7 @@
> #include <errno.h>
> #include <fdtdec.h>
> #include <dm/device_compat.h>
> +#include <linux/intel-smc.h>
> #include <linux/libfdt.h>
> #include <linux/err.h>
> #include <malloc.h>
> @@ -58,10 +60,22 @@ static int socfpga_dwmci_clksel(struct dwmci_host *host)
>
> debug("%s: drvsel %d smplsel %d\n", __func__,
> priv->drvsel, priv->smplsel);
> +
> +#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_ATF)
> + int ret;
> +
> + ret = socfpga_secure_reg_write32(SOCFPGA_SECURE_REG_SYSMGR_SOC64_SDMMC,
> + sdmmc_mask);
> + if (ret) {
> + printf("DWMMC: Failed to set clksel via SMC call");
> + return ret;
> + }
> +#else
> writel(sdmmc_mask, socfpga_get_sysmgr_addr() + SYSMGR_SDMMC);
>
> debug("%s: SYSMGR_SDMMCGRP_CTRL_REG = 0x%x\n", __func__,
> readl(socfpga_get_sysmgr_addr() + SYSMGR_SDMMC));
> +#endif
>
> /* Enable SDMMC clock */
> setbits_le32(socfpga_get_clkmgr_addr() + CLKMGR_PERPLL_EN,
>
