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path: root/drivers/spi/fsl_qspi.c
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Diffstat (limited to 'drivers/spi/fsl_qspi.c')
-rw-r--r--drivers/spi/fsl_qspi.c137
1 files changed, 96 insertions, 41 deletions
diff --git a/drivers/spi/fsl_qspi.c b/drivers/spi/fsl_qspi.c
index ba20bef..d12f420 100644
--- a/drivers/spi/fsl_qspi.c
+++ b/drivers/spi/fsl_qspi.c
@@ -14,7 +14,11 @@
#include "fsl_qspi.h"
#define RX_BUFFER_SIZE 0x80
+#ifdef CONFIG_MX6SX
+#define TX_BUFFER_SIZE 0x200
+#else
#define TX_BUFFER_SIZE 0x40
+#endif
#define OFFSET_BITS_MASK 0x00ffffff
@@ -28,20 +32,22 @@
#define SEQID_CHIP_ERASE 5
#define SEQID_PP 6
#define SEQID_RDID 7
-
-/* Flash opcodes */
-#define OPCODE_PP 0x02 /* Page program (up to 256 bytes) */
-#define OPCODE_RDSR 0x05 /* Read status register */
-#define OPCODE_WREN 0x06 /* Write enable */
-#define OPCODE_FAST_READ 0x0b /* Read data bytes (high frequency) */
-#define OPCODE_CHIP_ERASE 0xc7 /* Erase whole flash chip */
-#define OPCODE_SE 0xd8 /* Sector erase (usually 64KiB) */
-#define OPCODE_RDID 0x9f /* Read JEDEC ID */
-
-/* 4-byte address opcodes - used on Spansion and some Macronix flashes */
-#define OPCODE_FAST_READ_4B 0x0c /* Read data bytes (high frequency) */
-#define OPCODE_PP_4B 0x12 /* Page program (up to 256 bytes) */
-#define OPCODE_SE_4B 0xdc /* Sector erase (usually 64KiB) */
+#define SEQID_BE_4K 8
+
+/* QSPI CMD */
+#define QSPI_CMD_PP 0x02 /* Page program (up to 256 bytes) */
+#define QSPI_CMD_RDSR 0x05 /* Read status register */
+#define QSPI_CMD_WREN 0x06 /* Write enable */
+#define QSPI_CMD_FAST_READ 0x0b /* Read data bytes (high frequency) */
+#define QSPI_CMD_BE_4K 0x20 /* 4K erase */
+#define QSPI_CMD_CHIP_ERASE 0xc7 /* Erase whole flash chip */
+#define QSPI_CMD_SE 0xd8 /* Sector erase (usually 64KiB) */
+#define QSPI_CMD_RDID 0x9f /* Read JEDEC ID */
+
+/* 4-byte address QSPI CMD - used on Spansion and some Macronix flashes */
+#define QSPI_CMD_FAST_READ_4B 0x0c /* Read data bytes (high frequency) */
+#define QSPI_CMD_PP_4B 0x12 /* Page program (up to 256 bytes) */
+#define QSPI_CMD_SE_4B 0xdc /* Sector erase (usually 64KiB) */
#ifdef CONFIG_SYS_FSL_QSPI_LE
#define qspi_read32 in_le32
@@ -53,10 +59,16 @@
static unsigned long spi_bases[] = {
QSPI0_BASE_ADDR,
+#ifdef CONFIG_MX6SX
+ QSPI1_BASE_ADDR,
+#endif
};
static unsigned long amba_bases[] = {
QSPI0_AMBA_BASE,
+#ifdef CONFIG_MX6SX
+ QSPI1_AMBA_BASE,
+#endif
};
struct fsl_qspi {
@@ -94,7 +106,7 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* Write Enable */
lut_base = SEQID_WREN * 4;
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_WREN) |
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_WREN) |
PAD0(LUT_PAD1) | INSTR0(LUT_CMD));
qspi_write32(&regs->lut[lut_base + 1], 0);
qspi_write32(&regs->lut[lut_base + 2], 0);
@@ -103,13 +115,15 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* Fast Read */
lut_base = SEQID_FAST_READ * 4;
if (FSL_QSPI_FLASH_SIZE <= SZ_16M)
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_FAST_READ) |
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_FAST_READ) |
PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
else
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_FAST_READ_4B) |
- PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR32BIT) |
- PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
+ qspi_write32(&regs->lut[lut_base],
+ OPRND0(QSPI_CMD_FAST_READ_4B) |
+ PAD0(LUT_PAD1) | INSTR0(LUT_CMD) |
+ OPRND1(ADDR32BIT) | PAD1(LUT_PAD1) |
+ INSTR1(LUT_ADDR));
qspi_write32(&regs->lut[lut_base + 1], OPRND0(8) | PAD0(LUT_PAD1) |
INSTR0(LUT_DUMMY) | OPRND1(RX_BUFFER_SIZE) | PAD1(LUT_PAD1) |
INSTR1(LUT_READ));
@@ -118,7 +132,7 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* Read Status */
lut_base = SEQID_RDSR * 4;
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_RDSR) |
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_RDSR) |
PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(1) |
PAD1(LUT_PAD1) | INSTR1(LUT_READ));
qspi_write32(&regs->lut[lut_base + 1], 0);
@@ -128,11 +142,11 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* Erase a sector */
lut_base = SEQID_SE * 4;
if (FSL_QSPI_FLASH_SIZE <= SZ_16M)
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_SE) |
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_SE) |
PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
else
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_SE_4B) |
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_SE_4B) |
PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR32BIT) |
PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
qspi_write32(&regs->lut[lut_base + 1], 0);
@@ -141,7 +155,7 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* Erase the whole chip */
lut_base = SEQID_CHIP_ERASE * 4;
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_CHIP_ERASE) |
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_CHIP_ERASE) |
PAD0(LUT_PAD1) | INSTR0(LUT_CMD));
qspi_write32(&regs->lut[lut_base + 1], 0);
qspi_write32(&regs->lut[lut_base + 2], 0);
@@ -150,27 +164,42 @@ static void qspi_set_lut(struct fsl_qspi *qspi)
/* Page Program */
lut_base = SEQID_PP * 4;
if (FSL_QSPI_FLASH_SIZE <= SZ_16M)
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_PP) |
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_PP) |
PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
else
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_PP_4B) |
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_PP_4B) |
PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR32BIT) |
PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
+#ifdef CONFIG_MX6SX
+ /*
+ * To MX6SX, OPRND0(TX_BUFFER_SIZE) can not work correctly.
+ * So, Use IDATSZ in IPCR to determine the size and here set 0.
+ */
+ qspi_write32(&regs->lut[lut_base + 1], OPRND0(0) |
+ PAD0(LUT_PAD1) | INSTR0(LUT_WRITE));
+#else
qspi_write32(&regs->lut[lut_base + 1], OPRND0(TX_BUFFER_SIZE) |
PAD0(LUT_PAD1) | INSTR0(LUT_WRITE));
+#endif
qspi_write32(&regs->lut[lut_base + 2], 0);
qspi_write32(&regs->lut[lut_base + 3], 0);
/* READ ID */
lut_base = SEQID_RDID * 4;
- qspi_write32(&regs->lut[lut_base], OPRND0(OPCODE_RDID) |
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_RDID) |
PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(8) |
PAD1(LUT_PAD1) | INSTR1(LUT_READ));
qspi_write32(&regs->lut[lut_base + 1], 0);
qspi_write32(&regs->lut[lut_base + 2], 0);
qspi_write32(&regs->lut[lut_base + 3], 0);
+ /* SUB SECTOR 4K ERASE */
+ lut_base = SEQID_BE_4K * 4;
+ qspi_write32(&regs->lut[lut_base], OPRND0(QSPI_CMD_BE_4K) |
+ PAD0(LUT_PAD1) | INSTR0(LUT_CMD) | OPRND1(ADDR24BIT) |
+ PAD1(LUT_PAD1) | INSTR1(LUT_ADDR));
+
/* Lock the LUT */
qspi_write32(&regs->lutkey, LUT_KEY_VALUE);
qspi_write32(&regs->lckcr, QSPI_LCKCR_LOCK);
@@ -192,12 +221,22 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
if (bus >= ARRAY_SIZE(spi_bases))
return NULL;
+ if (cs >= FSL_QSPI_FLASH_NUM)
+ return NULL;
+
qspi = spi_alloc_slave(struct fsl_qspi, bus, cs);
if (!qspi)
return NULL;
qspi->reg_base = spi_bases[bus];
- qspi->amba_base = amba_bases[bus];
+ /*
+ * According cs, use different amba_base to choose the
+ * corresponding flash devices.
+ *
+ * If not, only one flash device is used even if passing
+ * different cs using `sf probe`
+ */
+ qspi->amba_base = amba_bases[bus] + cs * FSL_QSPI_FLASH_SIZE;
qspi->slave.max_write_size = TX_BUFFER_SIZE;
@@ -210,10 +249,20 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
qspi_write32(&regs->mcr, QSPI_MCR_RESERVED_MASK);
total_size = FSL_QSPI_FLASH_SIZE * FSL_QSPI_FLASH_NUM;
- qspi_write32(&regs->sfa1ad, FSL_QSPI_FLASH_SIZE | qspi->amba_base);
- qspi_write32(&regs->sfa2ad, FSL_QSPI_FLASH_SIZE | qspi->amba_base);
- qspi_write32(&regs->sfb1ad, total_size | qspi->amba_base);
- qspi_write32(&regs->sfb2ad, total_size | qspi->amba_base);
+ /*
+ * Any read access to non-implemented addresses will provide
+ * undefined results.
+ *
+ * In case single die flash devices, TOP_ADDR_MEMA2 and
+ * TOP_ADDR_MEMB2 should be initialized/programmed to
+ * TOP_ADDR_MEMA1 and TOP_ADDR_MEMB1 respectively - in effect,
+ * setting the size of these devices to 0. This would ensure
+ * that the complete memory map is assigned to only one flash device.
+ */
+ qspi_write32(&regs->sfa1ad, FSL_QSPI_FLASH_SIZE | amba_bases[bus]);
+ qspi_write32(&regs->sfa2ad, FSL_QSPI_FLASH_SIZE | amba_bases[bus]);
+ qspi_write32(&regs->sfb1ad, total_size | amba_bases[bus]);
+ qspi_write32(&regs->sfb2ad, total_size | amba_bases[bus]);
qspi_set_lut(qspi);
@@ -409,7 +458,7 @@ static void qspi_op_rdsr(struct fsl_qspi *qspi, u32 *rxbuf)
qspi_write32(&regs->mcr, mcr_reg);
}
-static void qspi_op_se(struct fsl_qspi *qspi)
+static void qspi_op_erase(struct fsl_qspi *qspi)
{
struct fsl_qspi_regs *regs = (struct fsl_qspi_regs *)qspi->reg_base;
u32 mcr_reg;
@@ -428,8 +477,13 @@ static void qspi_op_se(struct fsl_qspi *qspi)
while (qspi_read32(&regs->sr) & QSPI_SR_BUSY_MASK)
;
- qspi_write32(&regs->ipcr,
- (SEQID_SE << QSPI_IPCR_SEQID_SHIFT) | 0);
+ if (qspi->cur_seqid == QSPI_CMD_SE) {
+ qspi_write32(&regs->ipcr,
+ (SEQID_SE << QSPI_IPCR_SEQID_SHIFT) | 0);
+ } else if (qspi->cur_seqid == QSPI_CMD_BE_4K) {
+ qspi_write32(&regs->ipcr,
+ (SEQID_BE_4K << QSPI_IPCR_SEQID_SHIFT) | 0);
+ }
while (qspi_read32(&regs->sr) & QSPI_SR_BUSY_MASK)
;
@@ -454,22 +508,23 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
return 0;
}
- if (qspi->cur_seqid == OPCODE_FAST_READ) {
+ if (qspi->cur_seqid == QSPI_CMD_FAST_READ) {
qspi->sf_addr = swab32(txbuf) & OFFSET_BITS_MASK;
- } else if (qspi->cur_seqid == OPCODE_SE) {
+ } else if ((qspi->cur_seqid == QSPI_CMD_SE) ||
+ (qspi->cur_seqid == QSPI_CMD_BE_4K)) {
qspi->sf_addr = swab32(txbuf) & OFFSET_BITS_MASK;
- qspi_op_se(qspi);
- } else if (qspi->cur_seqid == OPCODE_PP) {
+ qspi_op_erase(qspi);
+ } else if (qspi->cur_seqid == QSPI_CMD_PP) {
pp_sfaddr = swab32(txbuf) & OFFSET_BITS_MASK;
}
}
if (din) {
- if (qspi->cur_seqid == OPCODE_FAST_READ)
+ if (qspi->cur_seqid == QSPI_CMD_FAST_READ)
qspi_op_read(qspi, din, bytes);
- else if (qspi->cur_seqid == OPCODE_RDID)
+ else if (qspi->cur_seqid == QSPI_CMD_RDID)
qspi_op_rdid(qspi, din, bytes);
- else if (qspi->cur_seqid == OPCODE_RDSR)
+ else if (qspi->cur_seqid == QSPI_CMD_RDSR)
qspi_op_rdsr(qspi, din);
}
generated by cgit v1.1 at 2024-10-04 16:10:14 +0000