From: Pengpeng Chen pengpeng.chen@cortina-access.com
Add SPI Flash controller driver for Cortina Access CAxxxx SoCs
Signed-off-by: Pengpeng Chen pengpeng.chen@cortina-access.com Signed-off-by: Alex Nemirovsky alex.nemirovsky@cortina-access.com CC: Jagan Teki jagan@amarulasolutions.com CC: Vignesh R vigneshr@ti.com
---
Changes in v6: None Changes in v5: None Changes in v4: None Changes in v3: - Fixup syntax issues related to checkpatch.pl cleanup
Changes in v2: None
MAINTAINERS | 2 + drivers/spi/Kconfig | 8 + drivers/spi/Makefile | 1 + drivers/spi/ca_sflash.c | 576 ++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 587 insertions(+) create mode 100644 drivers/spi/ca_sflash.c
diff --git a/MAINTAINERS b/MAINTAINERS index e9b6bfa..5047748 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -184,6 +184,7 @@ F: drivers/mmc/ca_dw_mmc.c F: drivers/i2c/i2c-cortina.c F: drivers/i2c/i2c-cortina.h F: drivers/led/led_cortina.c +F: drivers/spi/ca_sflash.c
ARM/CZ.NIC TURRIS MOX SUPPORT M: Marek Behun marek.behun@nic.cz @@ -726,6 +727,7 @@ F: drivers/mmc/ca_dw_mmc.c F: drivers/i2c/i2c-cortina.c F: drivers/i2c/i2c-cortina.h F: drivers/led/led_cortina.c +F: drivers/spi/ca_sflash.c
MIPS MSCC M: Gregory CLEMENT gregory.clement@bootlin.com diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 4166c61..8a244f1 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -106,6 +106,14 @@ config BCMSTB_SPI be used to access the SPI flash on platforms embedding this Broadcom SPI core.
+config CORTINA_SFLASH + bool "Cortina-Access Serial Flash controller driver" + depends on DM_SPI && SPI_MEM + help + Enable the Cortina-Access Serial Flash controller driver. This driver + can be used to access the SPI NOR/NAND flash on platforms embedding this + Cortina-Access IP core. + config CADENCE_QSPI bool "Cadence QSPI driver" help diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index 52462e1..32b98b4 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_BCM63XX_SPI) += bcm63xx_spi.o obj-$(CONFIG_BCMSTB_SPI) += bcmstb_spi.o obj-$(CONFIG_CADENCE_QSPI) += cadence_qspi.o cadence_qspi_apb.o obj-$(CONFIG_CF_SPI) += cf_spi.o +obj-$(CONFIG_CORTINA_SFLASH) += ca_sflash.o obj-$(CONFIG_DAVINCI_SPI) += davinci_spi.o obj-$(CONFIG_DESIGNWARE_SPI) += designware_spi.o obj-$(CONFIG_EXYNOS_SPI) += exynos_spi.o diff --git a/drivers/spi/ca_sflash.c b/drivers/spi/ca_sflash.c new file mode 100644 index 0000000..0709650 --- /dev/null +++ b/drivers/spi/ca_sflash.c @@ -0,0 +1,576 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for Cortina SPI-FLASH Controller + * + * Copyright (C) 2020 Cortina Access Inc. All Rights Reserved. + * + * Author: PengPeng Chen pengpeng.chen@cortina-access.com + */ + +#include <common.h> +#include <malloc.h> +#include <clk.h> +#include <dm.h> +#include <errno.h> +#include <fdtdec.h> +#include <linux/compat.h> +#include <linux/io.h> +#include <linux/iopoll.h> +#include <linux/ioport.h> +#include <linux/sizes.h> +#include <spi.h> +#include <spi-mem.h> +#include <reset.h> + +DECLARE_GLOBAL_DATA_PTR; + +struct ca_sflash_regs { + u32 idr; /* 0x00:Flash word ID Register */ + u32 tc; /* 0x04:Flash Timeout Counter Register */ + u32 sr; /* 0x08:Flash Status Register */ + u32 tr; /* 0x0C:Flash Type Register */ + u32 asr; /* 0x10:Flash ACCESS START/BUSY Register */ + u32 isr; /* 0x14:Flash Interrupt Status Register */ + u32 imr; /* 0x18:Flash Interrupt Mask Register */ + u32 fcr; /* 0x1C:NAND Flash FIFO Control Register */ + u32 ffsr; /* 0x20:Flash FIFO Status Register */ + u32 ffar; /* 0x24:Flash FIFO ADDRESS Register */ + u32 ffmar; /* 0x28:Flash FIFO MATCHING ADDRESS Register */ + u32 ffdr; /* 0x2C:Flash FIFO Data Register */ + u32 ar; /* 0x30:Serial Flash Access Register */ + u32 ear; /* 0x34:Serial Flash Extend Access Register */ + u32 adr; /* 0x38:Serial Flash ADdress Register */ + u32 dr; /* 0x3C:Serial Flash Data Register */ + u32 tmr; /* 0x40:Serial Flash Timing Register */ +}; + +/* + * FLASH_TYPE + */ +#define CA_FLASH_TR_PIN BIT(15) +#define CA_FLASH_TR_TYPE_MASK GENMASK(14, 12) +#define CA_FLASH_TR_TYPE(tp) (((tp) << 12) & CA_FLASH_TR_TYPE_MASK) +#define CA_FLASH_TR_WIDTH BIT(11) +#define CA_FLASH_TR_SIZE_MASK GENMASK(10, 9) +#define CA_FLASH_TR_SIZE(sz) (((sz) << 9) & CA_FLASH_TR_SIZE_MASK) + +/* + * FLASH_FLASH_ACCESS_START + */ +#define CA_FLASH_ASR_IND_START_EN BIT(1) +#define CA_FLASH_ASR_DMA_START_EN BIT(3) +#define CA_FLASH_ASR_WR_ACCESS_EN BIT(9) + +/* + * FLASH_FLASH_INTERRUPT + */ +#define CA_FLASH_ISR_REG_IRQ BIT(1) +#define CA_FLASH_ISR_FIFO_IRQ BIT(2) + +/* + * FLASH_SF_ACCESS + */ +#define CA_SF_AR_OPCODE_MASK GENMASK(7, 0) +#define CA_SF_AR_OPCODE(op) ((op) << 0 & CA_SF_AR_OPCODE_MASK) +#define CA_SF_AR_ACCODE_MASK GENMASK(11, 8) +#define CA_SF_AR_ACCODE(ac) (((ac) << 8) & CA_SF_AR_ACCODE_MASK) +#define CA_SF_AR_FORCE_TERM BIT(12) +#define CA_SF_AR_FORCE_BURST BIT(13) +#define CA_SF_AR_AUTO_MODE_EN BIT(15) +#define CA_SF_AR_CHIP_EN_ALT BIT(16) +#define CA_SF_AR_HI_SPEED_RD BIT(17) +#define CA_SF_AR_MIO_INF_DC BIT(24) +#define CA_SF_AR_MIO_INF_AC BIT(25) +#define CA_SF_AR_MIO_INF_CC BIT(26) +#define CA_SF_AR_DDR_MASK GENMASK(29, 28) +#define CA_SF_AR_DDR(ddr) (((ddr) << 28) & CA_SF_AR_DDR_MASK) +#define CA_SF_AR_MIO_INF_MASK GENMASK(31, 30) +#define CA_SF_AR_MIO_INF(io) (((io) << 30) & CA_SF_AR_MIO_INF_MASK) + +/* + * FLASH_SF_EXT_ACCESS + */ +#define CA_SF_EAR_OPCODE_MASK GENMASK(7, 0) +#define CA_SF_EAR_OPCODE(op) (((op) << 0) & CA_SF_EAR_OPCODE_MASK) +#define CA_SF_EAR_DATA_CNT_MASK GENMASK(20, 8) +#define CA_SF_EAR_DATA_CNT(cnt) (((cnt) << 8) & CA_SF_EAR_DATA_CNT_MASK) +#define CA_SF_EAR_DATA_CNT_MAX (4096) +#define CA_SF_EAR_ADDR_CNT_MASK GENMASK(23, 21) +#define CA_SF_EAR_ADDR_CNT(cnt) (((cnt) << 21) & CA_SF_EAR_ADDR_CNT_MASK) +#define CA_SF_EAR_ADDR_CNT_MAX (5) +#define CA_SF_EAR_DUMY_CNT_MASK GENMASK(29, 24) +#define CA_SF_EAR_DUMY_CNT(cnt) (((cnt) << 24) & CA_SF_EAR_DUMY_CNT_MASK) +#define CA_SF_EAR_DUMY_CNT_MAX (32) +#define CA_SF_EAR_DRD_CMD_EN BIT(31) + +/* + * FLASH_SF_ADDRESS + */ +#define CA_SF_ADR_REG_MASK GENMASK(31, 0) +#define CA_SF_ADR_REG(addr) (((addr) << 0) & CA_SF_ADR_REG_MASK) + +/* + * FLASH_SF_DATA + */ +#define CA_SF_DR_REG_MASK GENMASK(31, 0) +#define CA_SF_DR_REG(addr) (((addr) << 0) & CA_SF_DR_REG_MASK) + +/* + * FLASH_SF_TIMING + */ +#define CA_SF_TMR_IDLE_MASK GENMASK(7, 0) +#define CA_SF_TMR_IDLE(idle) (((idle) << 0) & CA_SF_TMR_IDLE_MASK) +#define CA_SF_TMR_HOLD_MASK GENMASK(15, 8) +#define CA_SF_TMR_HOLD(hold) (((hold) << 8) & CA_SF_TMR_HOLD_MASK) +#define CA_SF_TMR_SETUP_MASK GENMASK(23, 16) +#define CA_SF_TMR_SETUP(setup) (((setup) << 16) & CA_SF_TMR_SETUP_MASK) +#define CA_SF_TMR_CLK_MASK GENMASK(26, 24) +#define CA_SF_TMR_CLK(clk) (((clk) << 24) & CA_SF_TMR_CLK_MASK) + +#define CA_SFLASH_IND_WRITE 0 +#define CA_SFLASH_IND_READ 1 +#define CA_SFLASH_MEM_MAP 3 +#define CA_SFLASH_FIFO_TIMEOUT_US 30000 +#define CA_SFLASH_BUSY_TIMEOUT_US 40000 + +#define CA_SF_AC_OPCODE 0x00 +#define CA_SF_AC_OPCODE_1_DATA 0x01 +#define CA_SF_AC_OPCODE_2_DATA 0x02 +#define CA_SF_AC_OPCODE_3_DATA 0x03 +#define CA_SF_AC_OPCODE_4_DATA 0x04 +#define CA_SF_AC_OPCODE_3_ADDR 0x05 +#define CA_SF_AC_OPCODE_4_ADDR (CA_SF_AC_OPCODE_3_ADDR) +#define CA_SF_AC_OPCODE_3_ADDR_1_DATA 0x06 +#define CA_SF_AC_OPCODE_4_ADDR_1_DATA (CA_SF_AC_OPCODE_3_ADDR_1_DATA << 2) +#define CA_SF_AC_OPCODE_3_ADDR_2_DATA 0x07 +#define CA_SF_AC_OPCODE_4_ADDR_2_DATA (CA_SF_AC_OPCODE_3_ADDR_2_DATA << 2) +#define CA_SF_AC_OPCODE_3_ADDR_3_DATA 0x08 +#define CA_SF_AC_OPCODE_4_ADDR_3_DATA (CA_SF_AC_OPCODE_3_ADDR_3_DATA << 2) +#define CA_SF_AC_OPCODE_3_ADDR_4_DATA 0x09 +#define CA_SF_AC_OPCODE_4_ADDR_4_DATA (CA_SF_AC_OPCODE_3_ADDR_4_DATA << 2) +#define CA_SF_AC_OPCODE_3_ADDR_X_1_DATA 0x0A +#define CA_SF_AC_OPCODE_4_ADDR_X_1_DATA (CA_SF_AC_OPCODE_3_ADDR_X_1_DATA << 2) +#define CA_SF_AC_OPCODE_3_ADDR_X_2_DATA 0x0B +#define CA_SF_AC_OPCODE_4_ADDR_X_2_DATA (CA_SF_AC_OPCODE_3_ADDR_X_2_DATA << 2) +#define CA_SF_AC_OPCODE_3_ADDR_X_3_DATA 0x0C +#define CA_SF_AC_OPCODE_4_ADDR_X_3_DATA (CA_SF_AC_OPCODE_3_ADDR_X_3_DATA << 2) +#define CA_SF_AC_OPCODE_3_ADDR_X_4_DATA 0x0D +#define CA_SF_AC_OPCODE_4_ADDR_X_4_DATA (CA_SF_AC_OPCODE_3_ADDR_X_4_DATA << 2) +#define CA_SF_AC_OPCODE_3_ADDR_4X_1_DATA 0x0E +#define CA_SF_AC_OPCODE_4_ADDR_4X_1_DATA (CA_SF_AC_OPCODE_3_ADDR_4X_1_DATA << 2) +#define CA_SF_AC_OPCODE_EXTEND 0x0F + +#define CA_SF_ACCESS_MIO_SINGLE 0 +#define CA_SF_ACCESS_MIO_DUAL 1 +#define CA_SF_ACCESS_MIO_QUARD 2 + +enum access_type { + RD_ACCESS, + WR_ACCESS, +}; + +struct ca_sflash_priv { + struct ca_sflash_regs *regs; + u8 rx_width; + u8 tx_width; +}; + +/* + * This function doesn't do anything except help with debugging + */ +static int ca_sflash_claim_bus(struct udevice *dev) +{ + debug("%s:\n", __func__); + return 0; +} + +static int ca_sflash_release_bus(struct udevice *dev) +{ + debug("%s:\n", __func__); + return 0; +} + +static int ca_sflash_set_speed(struct udevice *dev, uint speed) +{ + debug("%s:\n", __func__); + return 0; +} + +static int ca_sflash_set_mode(struct udevice *dev, uint mode) +{ + struct ca_sflash_priv *priv = dev_get_priv(dev); + + if (mode & SPI_RX_QUAD) + priv->rx_width = 4; + else if (mode & SPI_RX_DUAL) + priv->rx_width = 2; + else + priv->rx_width = 1; + + if (mode & SPI_TX_QUAD) + priv->tx_width = 4; + else if (mode & SPI_TX_DUAL) + priv->tx_width = 2; + else + priv->tx_width = 1; + + debug("%s: mode=%d, rx_width=%d, tx_width=%d\n", + __func__, mode, priv->rx_width, priv->tx_width); + + return 0; +} + +static int _ca_sflash_wait_for_not_busy(struct ca_sflash_priv *priv) +{ + u32 asr; + + if (readl_poll_timeout(&priv->regs->asr, asr, + !(asr & CA_FLASH_ASR_IND_START_EN), + CA_SFLASH_BUSY_TIMEOUT_US)) { + pr_err("busy timeout (stat:%#x)\n", asr); + return -1; + } + + return 0; +} + +static int _ca_sflash_wait_cmd(struct ca_sflash_priv *priv, + enum access_type type) +{ + if (type == WR_ACCESS) { + /* Enable write access and start the sflash indirect access */ + clrsetbits_le32(&priv->regs->asr, GENMASK(31, 0), + CA_FLASH_ASR_WR_ACCESS_EN + | CA_FLASH_ASR_IND_START_EN); + } else if (type == RD_ACCESS) { + /* Start the sflash indirect access */ + clrsetbits_le32(&priv->regs->asr, GENMASK(31, 0), + CA_FLASH_ASR_IND_START_EN); + } else { + printf("%s: !error access type.\n", __func__); + return -1; + } + + /* Wait til the action(rd/wr) completed */ + return _ca_sflash_wait_for_not_busy(priv); +} + +static int _ca_sflash_read(struct ca_sflash_priv *priv, + u8 *buf, unsigned int data_len) +{ + u32 reg_data; + int len; + + len = data_len; + while (len >= 4) { + if (_ca_sflash_wait_cmd(priv, RD_ACCESS)) + return -1; + reg_data = readl(&priv->regs->dr); + *buf++ = reg_data & 0xFF; + *buf++ = (reg_data >> 8) & 0xFF; + *buf++ = (reg_data >> 16) & 0xFF; + *buf++ = (reg_data >> 24) & 0xFF; + len -= 4; + debug("%s: reg_data=%#08x\n", + __func__, reg_data); + } + + if (len > 0) { + if (_ca_sflash_wait_cmd(priv, RD_ACCESS)) + return -1; + reg_data = readl(&priv->regs->dr); + debug("%s: reg_data=%#08x\n", + __func__, reg_data); + } + + switch (len) { + case 3: + *buf++ = reg_data & 0xFF; + *buf++ = (reg_data >> 8) & 0xFF; + *buf++ = (reg_data >> 16) & 0xFF; + break; + case 2: + *buf++ = reg_data & 0xFF; + *buf++ = (reg_data >> 8) & 0xFF; + break; + case 1: + *buf++ = reg_data & 0xFF; + break; + case 0: + break; + default: + printf("%s: error data_length %d!\n", __func__, len); + } + + return 0; +} + +static int _ca_sflash_mio_set(struct ca_sflash_priv *priv, + u8 width) +{ + if (width == 4) { + setbits_le32(&priv->regs->ar, + CA_SF_AR_MIO_INF_DC + | CA_SF_AR_MIO_INF(CA_SF_ACCESS_MIO_QUARD) + | CA_SF_AR_FORCE_BURST); + } else if (width == 2) { + setbits_le32(&priv->regs->ar, + CA_SF_AR_MIO_INF_DC + | CA_SF_AR_MIO_INF(CA_SF_ACCESS_MIO_DUAL) + | CA_SF_AR_FORCE_BURST); + } else if (width == 1) { + setbits_le32(&priv->regs->ar, + CA_SF_AR_MIO_INF(CA_SF_ACCESS_MIO_SINGLE) + | CA_SF_AR_FORCE_BURST); + } else { + printf("%s: error rx/tx width %d!\n", __func__, width); + return -1; + } + + return 0; +} + +static int _ca_sflash_write(struct ca_sflash_priv *priv, + u8 *buf, unsigned int data_len) +{ + u32 reg_data; + int len; + + len = data_len; + while (len > 0) { + reg_data = buf[0] + | (buf[1] << 8) + | (buf[2] << 16) + | (buf[3] << 24); + + debug("%s: reg_data=%#08x\n", + __func__, reg_data); + /* Fill data */ + clrsetbits_le32(&priv->regs->dr, GENMASK(31, 0), reg_data); + + if (_ca_sflash_wait_cmd(priv, WR_ACCESS)) + return -1; + + len -= 4; + buf += 4; + } + + return 0; +} + +static int _ca_sflash_access_data(struct ca_sflash_priv *priv, + struct spi_mem_op *op) +{ + int total_cnt; + unsigned int len; + unsigned int data_cnt = op->data.nbytes; + u64 addr_offset = op->addr.val; + u8 addr_cnt = op->addr.nbytes; + u8 *data_buf = NULL; + u8 *buf = NULL; + + if (op->data.dir == SPI_MEM_DATA_IN) + data_buf = (u8 *)op->data.buf.in; + else + data_buf = (u8 *)op->data.buf.out; + + if (data_cnt > CA_SF_EAR_DATA_CNT_MAX) + buf = malloc(CA_SF_EAR_DATA_CNT_MAX); + else + buf = malloc(data_cnt); + + total_cnt = data_cnt; + while (total_cnt > 0) { + /* Fill address */ + if (addr_cnt > 0) + clrsetbits_le32(&priv->regs->adr, + GENMASK(31, 0), (u32)addr_offset); + + if (total_cnt > CA_SF_EAR_DATA_CNT_MAX) { + len = CA_SF_EAR_DATA_CNT_MAX; + addr_offset += CA_SF_EAR_DATA_CNT_MAX; + /* Clear start bit before next bulk read */ + clrbits_le32(&priv->regs->asr, GENMASK(31, 0)); + } else { + len = total_cnt; + } + + memset(buf, 0, len); + if (op->data.dir == SPI_MEM_DATA_IN) { + if (_ca_sflash_read(priv, buf, len)) + break; + memcpy(data_buf, buf, len); + } else { + memcpy(buf, data_buf, len); + if (_ca_sflash_write(priv, buf, len)) + break; + } + + total_cnt -= len; + data_buf += len; + } + if (buf) + free(buf); + + return total_cnt > 0 ? -1 : 0; +} + +static int _ca_sflash_issue_cmd(struct ca_sflash_priv *priv, + struct spi_mem_op *op, u8 opcode) +{ + u8 dummy_cnt = op->dummy.nbytes; + u8 addr_cnt = op->addr.nbytes; + u8 mio_width; + unsigned int data_cnt = op->data.nbytes; + u64 addr_offset = op->addr.val; + + /* Set the access register */ + clrsetbits_le32(&priv->regs->ar, + GENMASK(31, 0), CA_SF_AR_ACCODE(opcode)); + + if (opcode == CA_SF_AC_OPCODE_EXTEND) { /* read_data, write_data */ + if (data_cnt > 6) { + if (op->data.dir == SPI_MEM_DATA_IN) + mio_width = priv->rx_width; + else + mio_width = priv->tx_width; + if (_ca_sflash_mio_set(priv, mio_width)) + return -1; + } + debug("%s: FLASH ACCESS reg=%#08x\n", + __func__, readl(&priv->regs->ar)); + + /* Use command in extend_access register */ + clrsetbits_le32(&priv->regs->ear, + GENMASK(31, 0), CA_SF_EAR_OPCODE(op->cmd.opcode) + | CA_SF_EAR_DUMY_CNT(dummy_cnt * 8 - 1) + | CA_SF_EAR_ADDR_CNT(addr_cnt - 1) + | CA_SF_EAR_DATA_CNT(4 - 1) + | CA_SF_EAR_DRD_CMD_EN); + debug("%s: FLASH EXT ACCESS reg=%#08x\n", + __func__, readl(&priv->regs->ear)); + + if (_ca_sflash_access_data(priv, op)) + return -1; + } else { /* reset_op, wr_enable, wr_disable */ + setbits_le32(&priv->regs->ar, + CA_SF_AR_OPCODE(op->cmd.opcode)); + debug("%s: FLASH ACCESS reg=%#08x\n", + __func__, readl(&priv->regs->ar)); + + if (opcode == CA_SF_AC_OPCODE_4_ADDR) { /* erase_op */ + /* Configure address length */ + if (addr_cnt > 3) /* 4 Bytes address */ + setbits_le32(&priv->regs->tr, + CA_FLASH_TR_SIZE(2)); + else /* 3 Bytes address */ + clrbits_le32(&priv->regs->tr, + CA_FLASH_TR_SIZE_MASK); + + /* Fill address */ + if (addr_cnt > 0) + clrsetbits_le32(&priv->regs->adr, + GENMASK(31, 0), + (u32)addr_offset); + } + + if (_ca_sflash_wait_cmd(priv, RD_ACCESS)) + return -1; + } + /* elapse 10us before issuing any other command */ + udelay(10); + + return 0; +} + +static int ca_sflash_exec_op(struct spi_slave *slave, + const struct spi_mem_op *op) +{ + struct ca_sflash_priv *priv = dev_get_priv(slave->dev->parent); + u8 opcode; + + debug("%s: cmd:%#02x addr.val:%#llx addr.len:%#x data.len:%#x data.dir:%#x\n", + __func__, op->cmd.opcode, op->addr.val, + op->addr.nbytes, op->data.nbytes, op->data.dir); + + if (op->data.nbytes == 0 && op->addr.nbytes == 0) { + opcode = CA_SF_AC_OPCODE; + } else if (op->data.nbytes == 0 && op->addr.nbytes > 0) { + opcode = CA_SF_AC_OPCODE_4_ADDR; + } else if (op->data.nbytes > 0) { + opcode = CA_SF_AC_OPCODE_EXTEND; + } else { + printf("%s: can't support cmd.opcode:(%#02x) type currently!\n", + __func__, op->cmd.opcode); + return -1; + } + + return _ca_sflash_issue_cmd(priv, (struct spi_mem_op *)op, opcode); +} + +static void ca_sflash_init(struct ca_sflash_priv *priv) +{ + /* Set FLASH_TYPE as serial flash, value: 0x0400*/ + clrsetbits_le32(&priv->regs->tr, + GENMASK(31, 0), CA_FLASH_TR_SIZE(2)); + debug("%s: FLASH_TYPE reg=%#x\n", + __func__, readl(&priv->regs->tr)); + + /* Minimize flash timing, value: 0x07010101 */ + clrsetbits_le32(&priv->regs->tmr, + GENMASK(31, 0), + CA_SF_TMR_CLK(0x07) + | CA_SF_TMR_SETUP(0x01) + | CA_SF_TMR_HOLD(0x01) + | CA_SF_TMR_IDLE(0x01)); + debug("%s: FLASH_TIMING reg=%#x\n", + __func__, readl(&priv->regs->tmr)); +} + +static int ca_sflash_probe(struct udevice *dev) +{ + struct ca_sflash_priv *priv = dev_get_priv(dev); + struct resource res; + int ret; + + /* Map the registers */ + ret = dev_read_resource_byname(dev, "sflash-regs", &res); + if (ret) { + dev_err(dev, "can't get regs base addresses(ret = %d)!\n", ret); + return ret; + } + priv->regs = devm_ioremap(dev, res.start, resource_size(&res)); + if (IS_ERR(priv->regs)) + return PTR_ERR(priv->regs); + + ca_sflash_init(priv); + + printf("SFLASH: Controller probed ready\n"); + return 0; +} + +static const struct spi_controller_mem_ops ca_sflash_mem_ops = { + .exec_op = ca_sflash_exec_op, +}; + +static const struct dm_spi_ops ca_sflash_ops = { + .claim_bus = ca_sflash_claim_bus, + .release_bus = ca_sflash_release_bus, + .set_speed = ca_sflash_set_speed, + .set_mode = ca_sflash_set_mode, + .mem_ops = &ca_sflash_mem_ops, +}; + +static const struct udevice_id ca_sflash_ids[] = { + {.compatible = "cortina,ca-sflash"}, + {} +}; + +U_BOOT_DRIVER(ca_sflash) = { + .name = "ca_sflash", + .id = UCLASS_SPI, + .of_match = ca_sflash_ids, + .ops = &ca_sflash_ops, + .priv_auto_alloc_size = sizeof(struct ca_sflash_priv), + .probe = ca_sflash_probe, +};