diff --git a/include/drivers/rpi3/sdhost/rpi3_sdhost.h b/include/drivers/rpi3/sdhost/rpi3_sdhost.h
new file mode 100644
index 0000000..bc906e3
--- /dev/null
+++ b/include/drivers/rpi3/sdhost/rpi3_sdhost.h
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2019, Linaro Limited
+ * Copyright (c) 2019, Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef RPI3_SDHOST_H
+#define	RPI3_SDHOST_H
+
+#include <drivers/mmc.h>
+#include <stdint.h>
+#include <platform_def.h>
+
+struct rpi3_sdhost_params {
+	uintptr_t	reg_base;
+	uint32_t	clk_rate;
+	uint32_t	bus_width;
+	uint32_t        flags;
+	uint32_t	current_cmd;
+	uint8_t		cmdbusy;
+	uint8_t		mmc_app_cmd;
+	uint32_t	ns_per_fifo_word;
+	uint32_t	crc_err_retries;
+
+	uint32_t	sdcard_rca;
+	uint32_t	gpio48_pinselect[6];
+};
+
+void rpi3_sdhost_init(struct rpi3_sdhost_params *params,
+		      struct mmc_device_info *mmc_dev_info);
+void rpi3_sdhost_stop(void);
+
+/* Registers */
+#define HC_COMMAND			0x00        /* Command and flags */
+#define HC_ARGUMENT			0x04
+#define HC_TIMEOUTCOUNTER		0x08
+#define HC_CLOCKDIVISOR			0x0c
+#define HC_RESPONSE_0			0x10
+#define HC_RESPONSE_1			0x14
+#define HC_RESPONSE_2			0x18
+#define HC_RESPONSE_3			0x1c
+#define HC_HOSTSTATUS			0x20
+#define HC_POWER			0x30
+#define HC_DEBUG			0x34
+#define HC_HOSTCONFIG			0x38
+#define HC_BLOCKSIZE			0x3c
+#define HC_DATAPORT			0x40
+#define HC_BLOCKCOUNT			0x50
+
+/* Flags for HC_COMMAND register */
+#define HC_CMD_ENABLE			0x8000
+#define HC_CMD_FAILED			0x4000
+#define HC_CMD_BUSY			0x0800
+#define HC_CMD_RESPONSE_NONE		0x0400
+#define HC_CMD_RESPONSE_LONG		0x0200
+#define HC_CMD_WRITE			0x0080
+#define HC_CMD_READ			0x0040
+#define HC_CMD_COMMAND_MASK		0x003f
+
+#define HC_CLOCKDIVISOR_MAXVAL		0x07ff
+#define HC_CLOCKDIVISOR_PREFERVAL	0x027b
+#define HC_CLOCKDIVISOR_SLOWVAL		0x0148
+#define HC_CLOCKDIVISOR_STOPVAL		0x01fb
+
+/* Flags for HC_HOSTSTATUS register */
+#define HC_HSTST_HAVEDATA		0x0001
+#define HC_HSTST_ERROR_FIFO		0x0008
+#define HC_HSTST_ERROR_CRC7		0x0010
+#define HC_HSTST_ERROR_CRC16		0x0020
+#define HC_HSTST_TIMEOUT_CMD		0x0040
+#define HC_HSTST_TIMEOUT_DATA		0x0080
+#define HC_HSTST_INT_BLOCK		0x0200
+#define HC_HSTST_INT_BUSY		0x0400
+
+#define HC_HSTST_RESET			0xffff
+
+#define HC_HSTST_MASK_ERROR_DATA	(HC_HSTST_ERROR_FIFO | \
+					 HC_HSTST_ERROR_CRC7 | \
+					 HC_HSTST_ERROR_CRC16 | \
+					 HC_HSTST_TIMEOUT_DATA)
+
+#define HC_HSTST_MASK_ERROR_ALL		(HC_HSTST_MASK_ERROR_DATA | \
+					 HC_HSTST_TIMEOUT_CMD)
+
+/* Flags for HC_HOSTCONFIG register */
+#define HC_HSTCF_INTBUS_WIDE		0x0002
+#define HC_HSTCF_EXTBUS_4BIT		0x0004
+#define HC_HSTCF_SLOW_CARD		0x0008
+#define HC_HSTCF_INT_DATA		0x0010
+#define HC_HSTCF_INT_BLOCK		0x0100
+#define HC_HSTCF_INT_BUSY		0x0400
+
+/* Flags for HC_DEBUG register */
+#define HC_DBG_FIFO_THRESH_WRITE_SHIFT	9
+#define HC_DBG_FIFO_THRESH_READ_SHIFT	14
+#define HC_DBG_FIFO_THRESH_MASK		0x001f
+#define HC_DBG_FSM_MASK			0xf
+#define HC_DBG_FSM_IDENTMODE		0x0
+#define HC_DBG_FSM_DATAMODE		0x1
+#define HC_DBG_FSM_READDATA		0x2
+#define HC_DBG_FSM_WRITEDATA		0x3
+#define HC_DBG_FSM_READWAIT		0x4
+#define HC_DBG_FSM_READCRC		0x5
+#define HC_DBG_FSM_WRITECRC		0x6
+#define HC_DBG_FSM_WRITEWAIT1		0x7
+#define HC_DBG_FSM_POWERDOWN		0x8
+#define HC_DBG_FSM_POWERUP		0x9
+#define HC_DBG_FSM_WRITESTART1		0xa
+#define HC_DBG_FSM_WRITESTART2		0xb
+#define HC_DBG_FSM_GENPULSES		0xc
+#define HC_DBG_FSM_WRITEWAIT2		0xd
+#define HC_DBG_FSM_STARTPOWDOWN		0xf
+#define HC_DBG_FORCE_DATA_MODE		0x40000
+
+/* Settings */
+#define HC_FIFO_SIZE			16
+#define HC_FIFO_THRESH_READ		4
+#define HC_FIFO_THRESH_WRITE		4
+
+#define HC_TIMEOUT_DEFAULT		0x00f00000
+#define HC_TIMEOUT_IDLE			0x00a00000
+
+#endif  /* RPI3_SDHOST_H */