mmc: mmci: Add STM32 variant

STM32F4 and STM32F7 MCUs has a SDIO controller that looks like
an ARM PL810.
This patch adds the STM32 variant so that mmci driver supports it.

Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index f8a21f3c3b51..6246eaada750 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -244,6 +244,23 @@ static struct variant_data variant_ux500v2 = {
         .opendrain              = MCI_OD,
 };
 
+static struct variant_data variant_stm32 = {
+        .fifosize               = 32 * 4,
+        .fifohalfsize           = 8 * 4,
+        .clkreg                 = MCI_CLK_ENABLE,
+        .clkreg_enable          = MCI_ST_UX500_HWFCEN,
+        .clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS,
+        .clkreg_neg_edge_enable = MCI_ST_UX500_NEG_EDGE,
+        .datalength_bits        = 24,
+        .datactrl_mask_sdio     = MCI_DPSM_ST_SDIOEN,
+        .st_sdio                = true,
+        .st_clkdiv              = true,
+        .pwrreg_powerup         = MCI_PWR_ON,
+        .f_max                  = 48000000,
+        .pwrreg_clkgate         = true,
+        .pwrreg_nopower         = true,
+};
+
 static struct variant_data variant_qcom = {
         .fifosize               = 16 * 4,
         .fifohalfsize           = 8 * 4,
@@ -2021,6 +2038,11 @@ static const struct amba_id mmci_ids[] = {
                 .mask   = 0xf0ffffff,
                 .data   = &variant_ux500v2,
         },
+        {
+                .id     = 0x00880180,
+                .mask   = 0x00ffffff,
+                .data   = &variant_stm32,
+        },
         /* Qualcomm variants */
         {
                 .id     = 0x00051180,