diff --git a/drivers/spi/spi-mxic.c b/drivers/spi/spi-mxic.c
index e41ae6e..fbebf89 100644
--- a/drivers/spi/spi-mxic.c
+++ b/drivers/spi/spi-mxic.c
@@ -9,163 +9,11 @@
 //
 
 #include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/iopoll.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
+#include <linux/mfd/mxic-mx25f0a.h>
 #include <linux/pm_runtime.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/spi-mem.h>
 
-#define HC_CFG			0x0
-#define HC_CFG_IF_CFG(x)	((x) << 27)
-#define HC_CFG_DUAL_SLAVE	BIT(31)
-#define HC_CFG_INDIVIDUAL	BIT(30)
-#define HC_CFG_NIO(x)		(((x) / 4) << 27)
-#define HC_CFG_TYPE(s, t)	((t) << (23 + ((s) * 2)))
-#define HC_CFG_TYPE_SPI_NOR	0
-#define HC_CFG_TYPE_SPI_NAND	1
-#define HC_CFG_TYPE_SPI_RAM	2
-#define HC_CFG_TYPE_RAW_NAND	3
-#define HC_CFG_SLV_ACT(x)	((x) << 21)
-#define HC_CFG_CLK_PH_EN	BIT(20)
-#define HC_CFG_CLK_POL_INV	BIT(19)
-#define HC_CFG_BIG_ENDIAN	BIT(18)
-#define HC_CFG_DATA_PASS	BIT(17)
-#define HC_CFG_IDLE_SIO_LVL(x)	((x) << 16)
-#define HC_CFG_MAN_START_EN	BIT(3)
-#define HC_CFG_MAN_START	BIT(2)
-#define HC_CFG_MAN_CS_EN	BIT(1)
-#define HC_CFG_MAN_CS_ASSERT	BIT(0)
-
-#define INT_STS			0x4
-#define INT_STS_EN		0x8
-#define INT_SIG_EN		0xc
-#define INT_STS_ALL		GENMASK(31, 0)
-#define INT_RDY_PIN		BIT(26)
-#define INT_RDY_SR		BIT(25)
-#define INT_LNR_SUSP		BIT(24)
-#define INT_ECC_ERR		BIT(17)
-#define INT_CRC_ERR		BIT(16)
-#define INT_LWR_DIS		BIT(12)
-#define INT_LRD_DIS		BIT(11)
-#define INT_SDMA_INT		BIT(10)
-#define INT_DMA_FINISH		BIT(9)
-#define INT_RX_NOT_FULL		BIT(3)
-#define INT_RX_NOT_EMPTY	BIT(2)
-#define INT_TX_NOT_FULL		BIT(1)
-#define INT_TX_EMPTY		BIT(0)
-
-#define HC_EN			0x10
-#define HC_EN_BIT		BIT(0)
-
-#define TXD(x)			(0x14 + ((x) * 4))
-#define RXD			0x24
-
-#define SS_CTRL(s)		(0x30 + ((s) * 4))
-#define LRD_CFG			0x44
-#define LWR_CFG			0x80
-#define RWW_CFG			0x70
-#define OP_READ			BIT(23)
-#define OP_DUMMY_CYC(x)		((x) << 17)
-#define OP_ADDR_BYTES(x)	((x) << 14)
-#define OP_CMD_BYTES(x)		(((x) - 1) << 13)
-#define OP_OCTA_CRC_EN		BIT(12)
-#define OP_DQS_EN		BIT(11)
-#define OP_ENHC_EN		BIT(10)
-#define OP_PREAMBLE_EN		BIT(9)
-#define OP_DATA_DDR		BIT(8)
-#define OP_DATA_BUSW(x)		((x) << 6)
-#define OP_ADDR_DDR		BIT(5)
-#define OP_ADDR_BUSW(x)		((x) << 3)
-#define OP_CMD_DDR		BIT(2)
-#define OP_CMD_BUSW(x)		(x)
-#define OP_BUSW_1		0
-#define OP_BUSW_2		1
-#define OP_BUSW_4		2
-#define OP_BUSW_8		3
-
-#define OCTA_CRC		0x38
-#define OCTA_CRC_IN_EN(s)	BIT(3 + ((s) * 16))
-#define OCTA_CRC_CHUNK(s, x)	((fls((x) / 32)) << (1 + ((s) * 16)))
-#define OCTA_CRC_OUT_EN(s)	BIT(0 + ((s) * 16))
-
-#define ONFI_DIN_CNT(s)		(0x3c + (s))
-
-#define LRD_CTRL		0x48
-#define RWW_CTRL		0x74
-#define LWR_CTRL		0x84
-#define LMODE_EN		BIT(31)
-#define LMODE_SLV_ACT(x)	((x) << 21)
-#define LMODE_CMD1(x)		((x) << 8)
-#define LMODE_CMD0(x)		(x)
-
-#define LRD_ADDR		0x4c
-#define LWR_ADDR		0x88
-#define LRD_RANGE		0x50
-#define LWR_RANGE		0x8c
-
-#define AXI_SLV_ADDR		0x54
-
-#define DMAC_RD_CFG		0x58
-#define DMAC_WR_CFG		0x94
-#define DMAC_CFG_PERIPH_EN	BIT(31)
-#define DMAC_CFG_ALLFLUSH_EN	BIT(30)
-#define DMAC_CFG_LASTFLUSH_EN	BIT(29)
-#define DMAC_CFG_QE(x)		(((x) + 1) << 16)
-#define DMAC_CFG_BURST_LEN(x)	(((x) + 1) << 12)
-#define DMAC_CFG_BURST_SZ(x)	((x) << 8)
-#define DMAC_CFG_DIR_READ	BIT(1)
-#define DMAC_CFG_START		BIT(0)
-
-#define DMAC_RD_CNT		0x5c
-#define DMAC_WR_CNT		0x98
-
-#define SDMA_ADDR		0x60
-
-#define DMAM_CFG		0x64
-#define DMAM_CFG_START		BIT(31)
-#define DMAM_CFG_CONT		BIT(30)
-#define DMAM_CFG_SDMA_GAP(x)	(fls((x) / 8192) << 2)
-#define DMAM_CFG_DIR_READ	BIT(1)
-#define DMAM_CFG_EN		BIT(0)
-
-#define DMAM_CNT		0x68
-
-#define LNR_TIMER_TH		0x6c
-
-#define RDM_CFG0		0x78
-#define RDM_CFG0_POLY(x)	(x)
-
-#define RDM_CFG1		0x7c
-#define RDM_CFG1_RDM_EN		BIT(31)
-#define RDM_CFG1_SEED(x)	(x)
-
-#define LWR_SUSP_CTRL		0x90
-#define LWR_SUSP_CTRL_EN	BIT(31)
-
-#define DMAS_CTRL		0x9c
-#define DMAS_CTRL_DIR_READ	BIT(31)
-#define DMAS_CTRL_EN		BIT(30)
-
-#define DATA_STROB		0xa0
-#define DATA_STROB_EDO_EN	BIT(2)
-#define DATA_STROB_INV_POL	BIT(1)
-#define DATA_STROB_DELAY_2CYC	BIT(0)
-
-#define IDLY_CODE(x)		(0xa4 + ((x) * 4))
-#define IDLY_CODE_VAL(x, v)	((v) << (((x) % 4) * 8))
-
-#define GPIO			0xc4
-#define GPIO_PT(x)		BIT(3 + ((x) * 16))
-#define GPIO_RESET(x)		BIT(2 + ((x) * 16))
-#define GPIO_HOLDB(x)		BIT(1 + ((x) * 16))
-#define GPIO_WPB(x)		BIT((x) * 16)
-
-#define HC_VER			0xd0
-
-#define HW_TEST(x)		(0xe0 + ((x) * 4))
-
 struct mxic_spi {
 	struct clk *ps_clk;
 	struct clk *send_clk;
@@ -525,8 +373,8 @@ static int __maybe_unused mxic_spi_runtime_resume(struct device *dev)
 
 static int mxic_spi_probe(struct platform_device *pdev)
 {
+	struct mx25f0a_mfd *mxic_mfd = dev_get_drvdata(pdev->dev.parent);
 	struct spi_master *master;
-	struct resource *res;
 	struct mxic_spi *mxic;
 	int ret;
 
@@ -552,8 +400,7 @@ static int mxic_spi_probe(struct platform_device *pdev)
 	if (IS_ERR(mxic->send_dly_clk))
 		return PTR_ERR(mxic->send_dly_clk);
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
-	mxic->regs = devm_ioremap_resource(&pdev->dev, res);
+	mxic->regs = mxic_mfd->base;
 	if (IS_ERR(mxic->regs))
 		return PTR_ERR(mxic->regs);
 
