mmc: mmci: Add support for sdmmc variant revision 2.0

This patch adds a sdmmc variant revision 2.0. This revision is backward
compatible with 1.1, but adds DMA linked list support.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Link: https://lore.kernel.org/r/20200128090636.13689-10-ludovic.barre@st.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/mmci.c

@@ -275,6 +275,32 @@ static struct variant_data variant_stm32_sdmmc = {
 	.init			= sdmmc_variant_init,
 };
 
+static struct variant_data variant_stm32_sdmmcv2 = {
+	.fifosize		= 16 * 4,
+	.fifohalfsize		= 8 * 4,
+	.f_max			= 208000000,
+	.stm32_clkdiv		= true,
+	.cmdreg_cpsm_enable	= MCI_CPSM_STM32_ENABLE,
+	.cmdreg_lrsp_crc	= MCI_CPSM_STM32_LRSP_CRC,
+	.cmdreg_srsp_crc	= MCI_CPSM_STM32_SRSP_CRC,
+	.cmdreg_srsp		= MCI_CPSM_STM32_SRSP,
+	.cmdreg_stop		= MCI_CPSM_STM32_CMDSTOP,
+	.data_cmd_enable	= MCI_CPSM_STM32_CMDTRANS,
+	.irq_pio_mask		= MCI_IRQ_PIO_STM32_MASK,
+	.datactrl_first		= true,
+	.datacnt_useless	= true,
+	.datalength_bits	= 25,
+	.datactrl_blocksz	= 14,
+	.datactrl_any_blocksz	= true,
+	.stm32_idmabsize_mask	= GENMASK(16, 5),
+	.dma_lli		= true,
+	.busy_timeout		= true,
+	.busy_detect		= true,
+	.busy_detect_flag	= MCI_STM32_BUSYD0,
+	.busy_detect_mask	= MCI_STM32_BUSYD0ENDMASK,
+	.init			= sdmmc_variant_init,
+};
+
 static struct variant_data variant_qcom = {
 	.fifosize		= 16 * 4,
 	.fifohalfsize		= 8 * 4,
@@ -2343,6 +2369,11 @@ static const struct amba_id mmci_ids[] = {
 		.mask	= 0xf0ffffff,
 		.data	= &variant_stm32_sdmmc,
 	},
+	{
+		.id     = 0x00253180,
+		.mask	= 0xf0ffffff,
+		.data	= &variant_stm32_sdmmcv2,
+	},
 	/* Qualcomm variants */
 	{
 		.id     = 0x00051180,