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>
---
drivers/mmc/socfpga_dw_mmc.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/mmc/socfpga_dw_mmc.c b/drivers/mmc/socfpga_dw_mmc.c
index 786cdc7..d4d1132 100644
--- a/drivers/mmc/socfpga_dw_mmc.c
+++ b/drivers/mmc/socfpga_dw_mmc.c
@@ -5,13 +5,16 @@
#include <common.h>
#include <asm/arch/clock_manager.h>
+#include <asm/arch/misc.h>
#include <asm/arch/system_manager.h>
#include <clk.h>
#include <dm.h>
#include <dwmmc.h>
#include <errno.h>
#include <fdtdec.h>
+#include <hang.h>
#include <dm/device_compat.h>
+#include <linux/intel-smc.h>
#include <linux/libfdt.h>
#include <linux/err.h>
#include <malloc.h>
@@ -45,6 +48,20 @@ static void socfpga_dwmci_reset(struct udevice *dev)
reset_deassert_bulk(&reset_bulk);
}
+#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_ATF)
+static void socfpga_dwmci_fw_clksel(u32 sdmmc_mask)
+{
+ u64 args[2];
+
+ /* drvsel */
+ args[0] = (sdmmc_mask >> SYSMGR_SDMMC_DRVSEL_SHIFT) & 0x7;
+ /* smplsel */
+ args[1] = (sdmmc_mask >> SYSMGR_SDMMC_SMPLSEL_SHIFT) & 0x7;
+ if (invoke_smc(INTEL_SIP_SMC_HPS_SET_SDMMC_CCLK, args, 2, NULL, 0))
+ hang();
+}
+#endif
+
static void socfpga_dwmci_clksel(struct dwmci_host *host)
{
struct dwmci_socfpga_priv_data *priv = host->priv;
@@ -57,10 +74,14 @@ static void 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)
+ socfpga_dwmci_fw_clksel(sdmmc_mask);
+#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,
--
2.7.4
