diff options
author | Tom Rini | 2023-07-13 20:39:10 -0400 |
---|---|---|
committer | Tom Rini | 2023-07-13 20:39:10 -0400 |
commit | cef36755094f0c5463ff34ac89de8d88ef68982b (patch) | |
tree | 9c49b6e79e099a40cf58b01794b1d6293ecfdc11 /drivers | |
parent | c990ecba4d8b73a0fcf6f33d758ff1ed176e44ae (diff) | |
parent | 4a31e145217cecc3d421f96eafcd2cfd9c670929 (diff) |
Merge https://gitlab.denx.de/u-boot/custodians/u-boot-spi
- Add xtxtech spi-nor chip parts (Bruce Suen)
- Add bcm63xx-hsspi driver fixes (William Zhang)
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/mtd/spi/spi-nor-ids.c | 43 | ||||
-rw-r--r-- | drivers/spi/Kconfig | 13 | ||||
-rw-r--r-- | drivers/spi/Makefile | 1 | ||||
-rw-r--r-- | drivers/spi/bcm63xx_hsspi.c | 277 | ||||
-rw-r--r-- | drivers/spi/bcmbca_hsspi.c | 414 | ||||
-rw-r--r-- | drivers/spi/npcm_pspi.c | 12 | ||||
-rw-r--r-- | drivers/spi/pl022_spi.c | 51 | ||||
-rw-r--r-- | drivers/spi/soft_spi.c | 21 | ||||
-rw-r--r-- | drivers/spi/spi-synquacer.c | 8 |
9 files changed, 792 insertions, 48 deletions
diff --git a/drivers/mtd/spi/spi-nor-ids.c b/drivers/mtd/spi/spi-nor-ids.c index 3f8b7967893..45872159842 100644 --- a/drivers/mtd/spi/spi-nor-ids.c +++ b/drivers/mtd/spi/spi-nor-ids.c @@ -446,6 +446,11 @@ const struct flash_info spi_nor_ids[] = { SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, + { + INFO("w25q256jwm", 0xef8019, 0, 64 * 1024, 512, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | + SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) + }, { INFO("w25x64", 0xef3017, 0, 64 * 1024, 128, SECT_4K) }, { INFO("w25q64dw", 0xef6017, 0, 64 * 1024, 128, @@ -528,8 +533,42 @@ const struct flash_info spi_nor_ids[] = { { INFO("XM25QH128A", 0x207018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, #endif #ifdef CONFIG_SPI_FLASH_XTX - /* XTX Technology (Shenzhen) Limited */ - { INFO("xt25f128b", 0x0b4018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + /* XTX Technology Limited */ + /* adding these 3V QSPI flash parts */ + { INFO("xt25f08", 0x0b4014, 0, 64 * 1024, 16, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25f16", 0x0b4015, 0, 64 * 1024, 32, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25f32", 0x0b4016, 0, 64 * 1024, 64, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25f64", 0x0b4017, 0, 64 * 1024, 128, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25f128", 0x0b4018, 0, 64 * 1024, 256, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25f256", 0x0b4019, 0, 64 * 1024, 512, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, + /* adding these 1.8V QSPI flash parts */ + { INFO("xt25q08", 0x0b6014, 0, 64 * 1024, 16, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25q16", 0x0b6015, 0, 64 * 1024, 32, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25q32", 0x0b6016, 0, 64 * 1024, 64, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25q64", 0x0b6017, 0, 64 * 1024, 128, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25q128", 0x0b6018, 0, 64 * 1024, 256, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { INFO("xt25q256", 0x0b6019, 0, 64 * 1024, 512, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, + { INFO("xt25q512", 0x0b601A, 0, 64 * 1024, 1024, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, + { INFO("xt25q01g", 0x0b601B, 0, 64 * 1024, 2048, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, + /* adding these wide voltage QSPI flash parts */ + { INFO("xt25w512", 0x0b651A, 0, 64 * 1024, 1024, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, + { INFO("xt25w01g", 0x0b651B, 0, 64 * 1024, 2048, + SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, #endif { }, }; diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 453a5983b2a..854b8b88daf 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -101,12 +101,21 @@ config ATMEL_SPI config BCM63XX_HSSPI bool "BCM63XX HSSPI driver" - depends on (ARCH_BMIPS || BCM6856 || BCM6858 || BCM63158) + depends on (ARCH_BMIPS || ARCH_BCMBCA) help - Enable the BCM6328 HSSPI driver. This driver can be used to + Enable the BCM63XX HSSPI driver. This driver can be used to access the SPI NOR flash on platforms embedding this Broadcom SPI core. +config BCMBCA_HSSPI + bool "BCMBCA HSSPI driver" + depends on ARCH_BCMBCA && HAVE_SPI_CS_CTRL + help + This enables support for the High Speed SPI controller present on + newer Broadcom BCMBCA SoCs. These SoCs include an updated SPI controller + that adds the capability to allow the driver to control chip select + explicitly. + config BCM63XX_SPI bool "BCM6348 SPI driver" depends on ARCH_BMIPS diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index 95dba9ac455..c27b3327c33 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_ATH79_SPI) += ath79_spi.o obj-$(CONFIG_ATMEL_QSPI) += atmel-quadspi.o obj-$(CONFIG_ATMEL_SPI) += atmel_spi.o obj-$(CONFIG_BCM63XX_HSSPI) += bcm63xx_hsspi.o +obj-$(CONFIG_BCMBCA_HSSPI) += bcmbca_hsspi.o obj-$(CONFIG_BCM63XX_SPI) += bcm63xx_spi.o obj-$(CONFIG_BCMSTB_SPI) += bcmstb_spi.o obj-$(CONFIG_CF_SPI) += cf_spi.o diff --git a/drivers/spi/bcm63xx_hsspi.c b/drivers/spi/bcm63xx_hsspi.c index 4d714adc4af..a24bb430cbb 100644 --- a/drivers/spi/bcm63xx_hsspi.c +++ b/drivers/spi/bcm63xx_hsspi.c @@ -20,7 +20,13 @@ #define HSSPI_PP 0 -#define SPI_MAX_SYNC_CLOCK 30000000 +/* + * The maximum frequency for SPI synchronous mode is 30MHz for some chips and + * 25MHz for some others. This depends on the chip layout and SPI signals + * distance to the pad. We use the lower of these values to cover all relevant + * chips. + */ +#define SPI_MAX_SYNC_CLOCK 25000000 /* SPI Control register */ #define SPI_CTL_REG 0x000 @@ -72,12 +78,16 @@ #define SPI_PFL_MODE_REG(x) (0x100 + (0x20 * (x)) + 0x08) #define SPI_PFL_MODE_FILL_SHIFT 0 #define SPI_PFL_MODE_FILL_MASK (0xff << SPI_PFL_MODE_FILL_SHIFT) +#define SPI_PFL_MODE_MDRDST_SHIFT 8 +#define SPI_PFL_MODE_MDWRST_SHIFT 12 #define SPI_PFL_MODE_MDRDSZ_SHIFT 16 #define SPI_PFL_MODE_MDRDSZ_MASK (1 << SPI_PFL_MODE_MDRDSZ_SHIFT) #define SPI_PFL_MODE_MDWRSZ_SHIFT 18 #define SPI_PFL_MODE_MDWRSZ_MASK (1 << SPI_PFL_MODE_MDWRSZ_SHIFT) #define SPI_PFL_MODE_3WIRE_SHIFT 20 #define SPI_PFL_MODE_3WIRE_MASK (1 << SPI_PFL_MODE_3WIRE_SHIFT) +#define SPI_PFL_MODE_PREPCNT_SHIFT 24 +#define SPI_PFL_MODE_PREPCNT_MASK (4 << SPI_PFL_MODE_PREPCNT_SHIFT) /* SPI Ping-Pong FIFO registers */ #define HSSPI_FIFO_SIZE 0x200 @@ -96,12 +106,21 @@ #define HSSPI_FIFO_OP_CODE_W (2 << HSSPI_FIFO_OP_CODE_SHIFT) #define HSSPI_FIFO_OP_CODE_R (3 << HSSPI_FIFO_OP_CODE_SHIFT) +#define HSSPI_MAX_DATA_SIZE (HSSPI_FIFO_SIZE - HSSPI_FIFO_OP_SIZE) +#define HSSPI_MAX_PREPEND_SIZE 15 + +#define HSSPI_XFER_MODE_PREPEND 0 +#define HSSPI_XFER_MODE_DUMMYCS 1 + struct bcm63xx_hsspi_priv { void __iomem *regs; ulong clk_rate; uint8_t num_cs; uint8_t cs_pols; uint speed; + uint xfer_mode; + uint32_t prepend_cnt; + uint8_t prepend_buf[HSSPI_MAX_PREPEND_SIZE]; }; static int bcm63xx_hsspi_cs_info(struct udevice *bus, uint cs, @@ -143,9 +162,16 @@ static void bcm63xx_hsspi_activate_cs(struct bcm63xx_hsspi_priv *priv, struct dm_spi_slave_plat *plat) { uint32_t clr, set; + uint speed = priv->speed; + + if (priv->xfer_mode == HSSPI_XFER_MODE_DUMMYCS && + speed > SPI_MAX_SYNC_CLOCK) { + speed = SPI_MAX_SYNC_CLOCK; + debug("Force to dummy cs mode. Reduce the speed to %dHz\n", speed); + } /* profile clock */ - set = DIV_ROUND_UP(priv->clk_rate, priv->speed); + set = DIV_ROUND_UP(priv->clk_rate, speed); set = DIV_ROUND_UP(2048, set); set &= SPI_PFL_CLK_FREQ_MASK; set |= SPI_PFL_CLK_RSTLOOP_MASK; @@ -164,7 +190,7 @@ static void bcm63xx_hsspi_activate_cs(struct bcm63xx_hsspi_priv *priv, set |= SPI_PFL_SIG_LATCHRIS_MASK; /* async clk */ - if (priv->speed > SPI_MAX_SYNC_CLOCK) + if (speed > SPI_MAX_SYNC_CLOCK) set |= SPI_PFL_SIG_ASYNCIN_MASK; clrsetbits_32(priv->regs + SPI_PFL_SIG_REG(plat->cs), clr, set); @@ -173,17 +199,24 @@ static void bcm63xx_hsspi_activate_cs(struct bcm63xx_hsspi_priv *priv, set = 0; clr = 0; - /* invert cs polarity */ - if (priv->cs_pols & BIT(plat->cs)) - clr |= BIT(plat->cs); - else - set |= BIT(plat->cs); - - /* invert dummy cs polarity */ - if (priv->cs_pols & BIT(!plat->cs)) - clr |= BIT(!plat->cs); - else - set |= BIT(!plat->cs); + if (priv->xfer_mode == HSSPI_XFER_MODE_PREPEND) { + if (priv->cs_pols & BIT(plat->cs)) + set |= BIT(plat->cs); + else + clr |= BIT(plat->cs); + } else { + /* invert cs polarity */ + if (priv->cs_pols & BIT(plat->cs)) + clr |= BIT(plat->cs); + else + set |= BIT(plat->cs); + + /* invert dummy cs polarity */ + if (priv->cs_pols & BIT(!plat->cs)) + clr |= BIT(!plat->cs); + else + set |= BIT(!plat->cs); + } clrsetbits_32(priv->regs + SPI_CTL_REG, clr, set); } @@ -212,16 +245,21 @@ static void bcm63xx_hsspi_deactivate_cs(struct bcm63xx_hsspi_priv *priv) * all the time. This hack is also used in the upstream linux driver and * allows keeping CS active between transfers even if the HW doesn't give * this possibility. + * + * This workaround only works when the dummy CS (usually CS1 when the actual + * CS is 0) pinmuxed to SPI chip select function if SPI clock is faster than + * SPI_MAX_SYNC_CLOCK. In old broadcom chip, CS1 pin is default to chip select + * function. But this is not the case for new chips. To make this function + * always work, it should be called with maximum clock of SPI_MAX_SYNC_CLOCK. */ -static int bcm63xx_hsspi_xfer(struct udevice *dev, unsigned int bitlen, - const void *dout, void *din, unsigned long flags) +static int bcm63xx_hsspi_xfer_dummy_cs(struct udevice *dev, unsigned int data_bytes, + const void *dout, void *din, unsigned long flags) { struct bcm63xx_hsspi_priv *priv = dev_get_priv(dev->parent); struct dm_spi_slave_plat *plat = dev_get_parent_plat(dev); - size_t data_bytes = bitlen / 8; size_t step_size = HSSPI_FIFO_SIZE; uint16_t opcode = 0; - uint32_t val; + uint32_t val = SPI_PFL_MODE_FILL_MASK; const uint8_t *tx = dout; uint8_t *rx = din; @@ -240,14 +278,17 @@ static int bcm63xx_hsspi_xfer(struct udevice *dev, unsigned int bitlen, step_size -= HSSPI_FIFO_OP_SIZE; /* dual mode */ - if ((opcode == HSSPI_FIFO_OP_CODE_R && plat->mode == SPI_RX_DUAL) || - (opcode == HSSPI_FIFO_OP_CODE_W && plat->mode == SPI_TX_DUAL)) + if ((opcode == HSSPI_FIFO_OP_CODE_R && (plat->mode & SPI_RX_DUAL)) || + (opcode == HSSPI_FIFO_OP_CODE_W && (plat->mode & SPI_TX_DUAL))) { opcode |= HSSPI_FIFO_OP_MBIT_MASK; - /* profile mode */ - val = SPI_PFL_MODE_FILL_MASK | - SPI_PFL_MODE_MDRDSZ_MASK | - SPI_PFL_MODE_MDWRSZ_MASK; + /* profile mode */ + if (plat->mode & SPI_RX_DUAL) + val |= SPI_PFL_MODE_MDRDSZ_MASK; + if (plat->mode & SPI_TX_DUAL) + val |= SPI_PFL_MODE_MDWRSZ_MASK; + } + if (plat->mode & SPI_3WIRE) val |= SPI_PFL_MODE_3WIRE_MASK; writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs)); @@ -301,6 +342,182 @@ static int bcm63xx_hsspi_xfer(struct udevice *dev, unsigned int bitlen, return 0; } +static int bcm63xx_prepare_prepend_transfer(struct bcm63xx_hsspi_priv *priv, + unsigned int data_bytes, const void *dout, void *din, + unsigned long flags) +{ + /* + * only support multiple half duplex write transfer + optional + * full duplex read/write at the end. + */ + if (flags & SPI_XFER_BEGIN) { + /* clear prepends */ + priv->prepend_cnt = 0; + } + + if (din) { + /* buffering reads not possible for prepend mode */ + if (!(flags & SPI_XFER_END)) { + debug("unable to buffer reads\n"); + return HSSPI_XFER_MODE_DUMMYCS; + } + + /* check rx size */ + if (data_bytes > HSSPI_MAX_DATA_SIZE) { + debug("max rx bytes exceeded\n"); + return HSSPI_XFER_MODE_DUMMYCS; + } + } + + if (dout) { + /* check tx size */ + if (flags & SPI_XFER_END) { + if (priv->prepend_cnt + data_bytes > HSSPI_MAX_DATA_SIZE) { + debug("max tx bytes exceeded\n"); + return HSSPI_XFER_MODE_DUMMYCS; + } + } else { + if (priv->prepend_cnt + data_bytes > HSSPI_MAX_PREPEND_SIZE) { + debug("max prepend bytes exceeded\n"); + return HSSPI_XFER_MODE_DUMMYCS; + } + + /* + * buffer transfer data in the prepend buf in case we have to fall + * back to dummy cs mode. + */ + memcpy(&priv->prepend_buf[priv->prepend_cnt], dout, data_bytes); + priv->prepend_cnt += data_bytes; + } + } + + return HSSPI_XFER_MODE_PREPEND; +} + +static int bcm63xx_hsspi_xfer_prepend(struct udevice *dev, unsigned int data_bytes, + const void *dout, void *din, unsigned long flags) +{ + struct bcm63xx_hsspi_priv *priv = dev_get_priv(dev->parent); + struct dm_spi_slave_plat *plat = dev_get_parent_plat(dev); + uint16_t opcode = 0; + uint32_t val, offset; + int ret; + + if (flags & SPI_XFER_END) { + offset = HSSPI_FIFO_BASE + HSSPI_FIFO_OP_SIZE; + if (priv->prepend_cnt) { + /* copy prepend data */ + memcpy_toio(priv->regs + offset, + priv->prepend_buf, priv->prepend_cnt); + } + + if (dout && data_bytes) { + /* copy tx data */ + offset += priv->prepend_cnt; + memcpy_toio(priv->regs + offset, dout, data_bytes); + } + + bcm63xx_hsspi_activate_cs(priv, plat); + if (dout && !din) { + /* all half-duplex write. merge to single write */ + data_bytes += priv->prepend_cnt; + opcode = HSSPI_FIFO_OP_CODE_W; + priv->prepend_cnt = 0; + } else if (!dout && din) { + /* half-duplex read with prepend write */ + opcode = HSSPI_FIFO_OP_CODE_R; + } else { + /* full duplex read/write */ + opcode = HSSPI_FIFO_OP_READ_WRITE; + } + + /* profile mode */ + val = SPI_PFL_MODE_FILL_MASK; + if (plat->mode & SPI_3WIRE) + val |= SPI_PFL_MODE_3WIRE_MASK; + + /* dual mode */ + if ((opcode == HSSPI_FIFO_OP_CODE_R && (plat->mode & SPI_RX_DUAL)) || + (opcode == HSSPI_FIFO_OP_CODE_W && (plat->mode & SPI_TX_DUAL))) { + opcode |= HSSPI_FIFO_OP_MBIT_MASK; + + if (plat->mode & SPI_RX_DUAL) { + val |= SPI_PFL_MODE_MDRDSZ_MASK; + val |= priv->prepend_cnt << SPI_PFL_MODE_MDRDST_SHIFT; + } + if (plat->mode & SPI_TX_DUAL) { + val |= SPI_PFL_MODE_MDWRSZ_MASK; + val |= priv->prepend_cnt << SPI_PFL_MODE_MDWRST_SHIFT; + } + } + val |= (priv->prepend_cnt << SPI_PFL_MODE_PREPCNT_SHIFT); + writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs)); + + /* set fifo operation */ + val = opcode | (data_bytes & HSSPI_FIFO_OP_BYTES_MASK); + writew(cpu_to_be16(val), + priv->regs + HSSPI_FIFO_OP_REG); + + /* issue the transfer */ + val = SPI_CMD_OP_START; + val |= (plat->cs << SPI_CMD_PFL_SHIFT) & + SPI_CMD_PFL_MASK; + val |= (plat->cs << SPI_CMD_SLAVE_SHIFT) & + SPI_CMD_SLAVE_MASK; + writel(val, priv->regs + SPI_CMD_REG); + + /* wait for completion */ + ret = wait_for_bit_32(priv->regs + SPI_STAT_REG, + SPI_STAT_SRCBUSY_MASK, false, + 1000, false); + if (ret) { + bcm63xx_hsspi_deactivate_cs(priv); + printf("spi polling timeout\n"); + return ret; + } + + /* copy rx data */ + if (din) + memcpy_fromio(din, priv->regs + HSSPI_FIFO_BASE, + data_bytes); + bcm63xx_hsspi_deactivate_cs(priv); + } + + return 0; +} + +static int bcm63xx_hsspi_xfer(struct udevice *dev, unsigned int bitlen, + const void *dout, void *din, unsigned long flags) +{ + struct bcm63xx_hsspi_priv *priv = dev_get_priv(dev->parent); + int ret; + u32 data_bytes = bitlen >> 3; + + if (priv->xfer_mode == HSSPI_XFER_MODE_PREPEND) { + priv->xfer_mode = + bcm63xx_prepare_prepend_transfer(priv, data_bytes, dout, din, flags); + } + + /* if not prependable, fall back to dummy cs mode with safe clock */ + if (priv->xfer_mode == HSSPI_XFER_MODE_DUMMYCS) { + /* For pending prepend data from previous transfers, send it first */ + if (priv->prepend_cnt) { + bcm63xx_hsspi_xfer_dummy_cs(dev, priv->prepend_cnt, + priv->prepend_buf, NULL, + (flags & ~SPI_XFER_END) | SPI_XFER_BEGIN); + priv->prepend_cnt = 0; + } + ret = bcm63xx_hsspi_xfer_dummy_cs(dev, data_bytes, dout, din, flags); + } else { + ret = bcm63xx_hsspi_xfer_prepend(dev, data_bytes, dout, din, flags); + } + + if (flags & SPI_XFER_END) + priv->xfer_mode = HSSPI_XFER_MODE_PREPEND; + + return ret; +} + static const struct dm_spi_ops bcm63xx_hsspi_ops = { .cs_info = bcm63xx_hsspi_cs_info, .set_mode = bcm63xx_hsspi_set_mode, @@ -310,6 +527,7 @@ static const struct dm_spi_ops bcm63xx_hsspi_ops = { static const struct udevice_id bcm63xx_hsspi_ids[] = { { .compatible = "brcm,bcm6328-hsspi", }, + { .compatible = "brcm,bcmbca-hsspi-v1.0", }, { /* sentinel */ } }; @@ -317,6 +535,7 @@ static int bcm63xx_hsspi_child_pre_probe(struct udevice *dev) { struct bcm63xx_hsspi_priv *priv = dev_get_priv(dev->parent); struct dm_spi_slave_plat *plat = dev_get_parent_plat(dev); + struct spi_slave *slave = dev_get_parent_priv(dev); /* check cs */ if (plat->cs >= priv->num_cs) { @@ -330,6 +549,13 @@ static int bcm63xx_hsspi_child_pre_probe(struct udevice *dev) else priv->cs_pols &= ~BIT(plat->cs); + /* + * set the max read/write size to make sure each xfer are within the + * prepend limit + */ + slave->max_read_size = HSSPI_MAX_DATA_SIZE; + slave->max_write_size = HSSPI_MAX_DATA_SIZE; + return 0; } @@ -391,6 +617,9 @@ static int bcm63xx_hsspi_probe(struct udevice *dev) priv->cs_pols = readl(priv->regs + SPI_CTL_REG) & SPI_CTL_CS_POL_MASK; + /* default in prepend mode */ + priv->xfer_mode = HSSPI_XFER_MODE_PREPEND; + return 0; } diff --git a/drivers/spi/bcmbca_hsspi.c b/drivers/spi/bcmbca_hsspi.c new file mode 100644 index 00000000000..fbe315a7d45 --- /dev/null +++ b/drivers/spi/bcmbca_hsspi.c @@ -0,0 +1,414 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com> + * + * Derived from linux/drivers/spi/spi-bcm63xx-hsspi.c: + * Copyright (C) 2000-2010 Broadcom Corporation + * Copyright (C) 2012-2013 Jonas Gorski <jogo@openwrt.org> + * Copyright (C) 2021 Broadcom Ltd + */ + +#include <common.h> +#include <asm/io.h> +#include <clk.h> +#include <spi.h> +#include <reset.h> +#include <wait_bit.h> +#include <dm.h> +#include <dm/device_compat.h> + +#define HSSPI_PP 0 + +#define SPI_MAX_SYNC_CLOCK 30000000 + +/* SPI Control register */ +#define SPI_CTL_REG 0x000 +#define SPI_CTL_CS_POL_SHIFT 0 +#define SPI_CTL_CS_POL_MASK (0xff << SPI_CTL_CS_POL_SHIFT) +#define SPI_CTL_CLK_GATE_SHIFT 16 +#define SPI_CTL_CLK_GATE_MASK BIT(SPI_CTL_CLK_GATE_SHIFT) +#define SPI_CTL_CLK_POL_SHIFT 17 +#define SPI_CTL_CLK_POL_MASK BIT(SPI_CTL_CLK_POL_SHIFT) + +/* SPI Interrupts registers */ +#define SPI_IR_STAT_REG 0x008 +#define SPI_IR_ST_MASK_REG 0x00c +#define SPI_IR_MASK_REG 0x010 + +#define SPI_IR_CLEAR_ALL 0xff001f1f + +/* SPI Ping-Pong Command registers */ +#define SPI_CMD_REG (0x080 + (0x40 * (HSSPI_PP)) + 0x00) +#define SPI_CMD_OP_SHIFT 0 +#define SPI_CMD_OP_START BIT(SPI_CMD_OP_SHIFT) +#define SPI_CMD_PFL_SHIFT 8 +#define SPI_CMD_PFL_MASK (0x7 << SPI_CMD_PFL_SHIFT) +#define SPI_CMD_SLAVE_SHIFT 12 +#define SPI_CMD_SLAVE_MASK (0x7 << SPI_CMD_SLAVE_SHIFT) + +/* SPI Ping-Pong Status registers */ +#define SPI_STAT_REG (0x080 + (0x40 * (HSSPI_PP)) + 0x04) +#define SPI_STAT_SRCBUSY_SHIFT 1 +#define SPI_STAT_SRCBUSY_MASK BIT(SPI_STAT_SRCBUSY_SHIFT) + +/* SPI Profile Clock registers */ +#define SPI_PFL_CLK_REG(x) (0x100 + (0x20 * (x)) + 0x00) +#define SPI_PFL_CLK_FREQ_SHIFT 0 +#define SPI_PFL_CLK_FREQ_MASK (0x3fff << SPI_PFL_CLK_FREQ_SHIFT) +#define SPI_PFL_CLK_RSTLOOP_SHIFT 15 +#define SPI_PFL_CLK_RSTLOOP_MASK BIT(SPI_PFL_CLK_RSTLOOP_SHIFT) + +/* SPI Profile Signal registers */ +#define SPI_PFL_SIG_REG(x) (0x100 + (0x20 * (x)) + 0x04) +#define SPI_PFL_SIG_LATCHRIS_SHIFT 12 +#define SPI_PFL_SIG_LATCHRIS_MASK BIT(SPI_PFL_SIG_LATCHRIS_SHIFT) +#define SPI_PFL_SIG_LAUNCHRIS_SHIFT 13 +#define SPI_PFL_SIG_LAUNCHRIS_MASK BIT(SPI_PFL_SIG_LAUNCHRIS_SHIFT) +#define SPI_PFL_SIG_ASYNCIN_SHIFT 16 +#define SPI_PFL_SIG_ASYNCIN_MASK BIT(SPI_PFL_SIG_ASYNCIN_SHIFT) + +/* SPI Profile Mode registers */ +#define SPI_PFL_MODE_REG(x) (0x100 + (0x20 * (x)) + 0x08) +#define SPI_PFL_MODE_FILL_SHIFT 0 +#define SPI_PFL_MODE_FILL_MASK (0xff << SPI_PFL_MODE_FILL_SHIFT) +#define SPI_PFL_MODE_MDRDSZ_SHIFT 16 +#define SPI_PFL_MODE_MDRDSZ_MASK BIT(SPI_PFL_MODE_MDRDSZ_SHIFT) +#define SPI_PFL_MODE_MDWRSZ_SHIFT 18 +#define SPI_PFL_MODE_MDWRSZ_MASK BIT(SPI_PFL_MODE_MDWRSZ_SHIFT) +#define SPI_PFL_MODE_3WIRE_SHIFT 20 +#define SPI_PFL_MODE_3WIRE_MASK BIT(SPI_PFL_MODE_3WIRE_SHIFT) + +/* SPI Ping-Pong FIFO registers */ +#define HSSPI_FIFO_SIZE 0x200 +#define HSSPI_FIFO_BASE (0x200 + \ + (HSSPI_FIFO_SIZE * HSSPI_PP)) + +/* SPI Ping-Pong FIFO OP register */ +#define HSSPI_FIFO_OP_SIZE 0x2 +#define HSSPI_FIFO_OP_REG (HSSPI_FIFO_BASE + 0x00) +#define HSSPI_FIFO_OP_BYTES_SHIFT 0 +#define HSSPI_FIFO_OP_BYTES_MASK (0x3ff << HSSPI_FIFO_OP_BYTES_SHIFT) +#define HSSPI_FIFO_OP_MBIT_SHIFT 11 +#define HSSPI_FIFO_OP_MBIT_MASK BIT(HSSPI_FIFO_OP_MBIT_SHIFT) +#define HSSPI_FIFO_OP_CODE_SHIFT 13 +#define HSSPI_FIFO_OP_READ_WRITE (1 << HSSPI_FIFO_OP_CODE_SHIFT) +#define HSSPI_FIFO_OP_CODE_W (2 << HSSPI_FIFO_OP_CODE_SHIFT) +#define HSSPI_FIFO_OP_CODE_R (3 << HSSPI_FIFO_OP_CODE_SHIFT) + +#define HSSPI_MAX_DATA_SIZE (HSSPI_FIFO_SIZE - HSSPI_FIFO_OP_SIZE) + +#define SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT 0 +#define SPIM_CTRL_CS_OVERRIDE_SEL_MASK 0xff +#define SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT 8 +#define SPIM_CTRL_CS_OVERRIDE_VAL_MASK 0xff + +struct bcmbca_hsspi_priv { + void __iomem *regs; + void __iomem *spim_ctrl; + u32 clk_rate; + u8 num_cs; + u8 cs_pols; + u32 speed; +}; + +static int bcmbca_hsspi_cs_info(struct udevice *bus, uint cs, + struct spi_cs_info *info) +{ + struct bcmbca_hsspi_priv *priv = dev_get_priv(bus); + + if (cs >= priv->num_cs) { + dev_err(bus, "no cs %u\n", cs); + return -EINVAL; + } + + return 0; +} + +static int bcmbca_hsspi_set_mode(struct udevice *bus, uint mode) +{ + struct bcmbca_hsspi_priv *priv = dev_get_priv(bus); + + /* clock polarity */ + if (mode & SPI_CPOL) + setbits_32(priv->regs + SPI_CTL_REG, SPI_CTL_CLK_POL_MASK); + else + clrbits_32(priv->regs + SPI_CTL_REG, SPI_CTL_CLK_POL_MASK); + + return 0; +} + +static int bcmbca_hsspi_set_speed(struct udevice *bus, uint speed) +{ + struct bcmbca_hsspi_priv *priv = dev_get_priv(bus); + + priv->speed = speed; + + return 0; +} + +static void bcmbca_hsspi_setup_clock(struct bcmbca_hsspi_priv *priv, + struct dm_spi_slave_plat *plat) +{ + u32 clr, set; + + /* profile clock */ + set = DIV_ROUND_UP(priv->clk_rate, priv->speed); + set = DIV_ROUND_UP(2048, set); + set &= SPI_PFL_CLK_FREQ_MASK; + set |= SPI_PFL_CLK_RSTLOOP_MASK; + writel(set, priv->regs + SPI_PFL_CLK_REG(plat->cs)); + + /* profile signal */ + set = 0; + clr = SPI_PFL_SIG_LAUNCHRIS_MASK | + SPI_PFL_SIG_LATCHRIS_MASK | + SPI_PFL_SIG_ASYNCIN_MASK; + + /* latch/launch config */ + if (plat->mode & SPI_CPHA) + set |= SPI_PFL_SIG_LAUNCHRIS_MASK; + else + set |= SPI_PFL_SIG_LATCHRIS_MASK; + + /* async clk */ + if (priv->speed > SPI_MAX_SYNC_CLOCK) + set |= SPI_PFL_SIG_ASYNCIN_MASK; + + clrsetbits_32(priv->regs + SPI_PFL_SIG_REG(plat->cs), clr, set); + + /* global control */ + set = 0; + clr = 0; + + if (priv->cs_pols & BIT(plat->cs)) + set |= BIT(plat->cs); + else + clr |= BIT(plat->cs); + + clrsetbits_32(priv->regs + SPI_CTL_REG, clr, set); +} + +static void bcmbca_hsspi_activate_cs(struct bcmbca_hsspi_priv *priv, + struct dm_spi_slave_plat *plat) +{ + u32 val; + + /* set the override bit */ + val = readl(priv->spim_ctrl); + val |= BIT(plat->cs + SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT); + writel(val, priv->spim_ctrl); +} + +static void bcmbca_hsspi_deactivate_cs(struct bcmbca_hsspi_priv *priv, + struct dm_spi_slave_plat *plat) +{ + u32 val; + + /* clear the cs override bit */ + val = readl(priv->spim_ctrl); + val &= ~BIT(plat->cs + SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT); + writel(val, priv->spim_ctrl); +} + +static int bcmbca_hsspi_xfer(struct udevice *dev, unsigned int bitlen, + const void *dout, void *din, unsigned long flags) +{ + struct bcmbca_hsspi_priv *priv = dev_get_priv(dev->parent); + struct dm_spi_slave_plat *plat = dev_get_parent_plat(dev); + size_t data_bytes = bitlen / 8; + size_t step_size = HSSPI_FIFO_SIZE; + u16 opcode = 0; + u32 val = SPI_PFL_MODE_FILL_MASK; + const u8 *tx = dout; + u8 *rx = din; + u32 cs_act = 0; + + if (flags & SPI_XFER_BEGIN) + bcmbca_hsspi_setup_clock(priv, plat); + + /* fifo operation */ + if (tx && rx) + opcode = HSSPI_FIFO_OP_READ_WRITE; + else if (rx) + opcode = HSSPI_FIFO_OP_CODE_R; + else if (tx) + opcode = HSSPI_FIFO_OP_CODE_W; + + if (opcode != HSSPI_FIFO_OP_CODE_R) + step_size -= HSSPI_FIFO_OP_SIZE; + + /* dual mode */ + if ((opcode == HSSPI_FIFO_OP_CODE_R && (plat->mode & SPI_RX_DUAL)) || + (opcode == HSSPI_FIFO_OP_CODE_W && (plat->mode & SPI_TX_DUAL))) { + opcode |= HSSPI_FIFO_OP_MBIT_MASK; + + /* profile mode */ + if (plat->mode & SPI_RX_DUAL) + val |= SPI_PFL_MODE_MDRDSZ_MASK; + if (plat->mode & SPI_TX_DUAL) + val |= SPI_PFL_MODE_MDWRSZ_MASK; + } + + if (plat->mode & SPI_3WIRE) + val |= SPI_PFL_MODE_3WIRE_MASK; + writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs)); + + /* transfer loop */ + while (data_bytes > 0) { + size_t curr_step = min(step_size, data_bytes); + int ret; + + /* copy tx data */ + if (tx) { + memcpy_toio(priv->regs + HSSPI_FIFO_BASE + + HSSPI_FIFO_OP_SIZE, tx, curr_step); + tx += curr_step; + } + + /* set fifo operation */ + writew(cpu_to_be16(opcode | (curr_step & HSSPI_FIFO_OP_BYTES_MASK)), + priv->regs + HSSPI_FIFO_OP_REG); + + /* make sure we keep cs active until spi transfer is done */ + if (!cs_act) { + bcmbca_hsspi_activate_cs(priv, plat); + cs_act = 1; + } + + /* issue the transfer */ + val = SPI_CMD_OP_START; + val |= (plat->cs << SPI_CMD_PFL_SHIFT) & + SPI_CMD_PFL_MASK; + val |= (plat->cs << SPI_CMD_SLAVE_SHIFT) & + SPI_CMD_SLAVE_MASK; + writel(val, priv->regs + SPI_CMD_REG); + + /* wait for completion */ + ret = wait_for_bit_32(priv->regs + SPI_STAT_REG, + SPI_STAT_SRCBUSY_MASK, false, + 1000, false); + if (ret) { + bcmbca_hsspi_deactivate_cs(priv, plat); + dev_err(dev, "interrupt timeout\n"); + return ret; + } + + data_bytes -= curr_step; + if ((flags & SPI_XFER_END) && !data_bytes) + bcmbca_hsspi_deactivate_cs(priv, plat); + + /* copy rx data */ + if (rx) { + memcpy_fromio(rx, priv->regs + HSSPI_FIFO_BASE, + curr_step); + rx += curr_step; + } + } + + return 0; +} + +static const struct dm_spi_ops bcmbca_hsspi_ops = { + .cs_info = bcmbca_hsspi_cs_info, + .set_mode = bcmbca_hsspi_set_mode, + .set_speed = bcmbca_hsspi_set_speed, + .xfer = bcmbca_hsspi_xfer, +}; + +static const struct udevice_id bcmbca_hsspi_ids[] = { + { .compatible = "brcm,bcmbca-hsspi-v1.1", }, + { /* sentinel */ } +}; + +static int bcmbca_hsspi_child_pre_probe(struct udevice *dev) +{ + struct bcmbca_hsspi_priv *priv = dev_get_priv(dev->parent); + struct dm_spi_slave_plat *plat = dev_get_parent_plat(dev); + u32 val; + + /* check cs */ + if (plat->cs >= priv->num_cs) { + dev_err(dev, "no cs %u\n", plat->cs); + return -EINVAL; + } + + /* cs polarity */ + if (plat->mode & SPI_CS_HIGH) + priv->cs_pols |= BIT(plat->cs); + else + priv->cs_pols &= ~BIT(plat->cs); + + /* set the polarity to spim cs register */ + val = readl(priv->spim_ctrl); + val &= ~BIT(plat->cs + SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT); + if (priv->cs_pols & BIT(plat->cs)) + val |= BIT(plat->cs + SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT); + writel(val, priv->spim_ctrl); + + return 0; +} + +static int bcmbca_hsspi_probe(struct udevice *dev) +{ + struct bcmbca_hsspi_priv *priv = dev_get_priv(dev); + struct clk clk; + int ret; + + priv->regs = dev_remap_addr_name(dev, "hsspi"); + if (!priv->regs) + return -EINVAL; + + priv->spim_ctrl = dev_remap_addr_name(dev, "spim-ctrl"); + if (!priv->spim_ctrl) { + dev_err(dev, "misc spim ctrl register not defined in dts!\n"); + return -EINVAL; + } + + priv->num_cs = dev_read_u32_default(dev, "num-cs", 8); + + /* enable clock */ + ret = clk_get_by_name(dev, "hsspi", &clk); + if (ret < 0) + return ret; + + ret = clk_enable(&clk); + if (ret < 0 && ret != -ENOSYS) + return ret; + + clk_free(&clk); + + /* get clock rate */ + ret = clk_get_by_name(dev, "pll", &clk); + if (ret < 0 && ret != -ENOSYS) + return ret; + + priv->clk_rate = clk_get_rate(&clk); + + clk_free(&clk); + + /* initialize hardware */ + writel(0, priv->regs + SPI_IR_MASK_REG); + + /* clear pending interrupts */ + writel(SPI_IR_CLEAR_ALL, priv->regs + SPI_IR_STAT_REG); + + /* enable clk gate */ + setbits_32(priv->regs + SPI_CTL_REG, SPI_CTL_CLK_GATE_MASK); + + /* read default cs polarities */ + priv->cs_pols = readl(priv->regs + SPI_CTL_REG) & + SPI_CTL_CS_POL_MASK; + + dev_info(dev, "Broadcom BCMBCA HS SPI bus driver\n"); + return 0; +} + +U_BOOT_DRIVER(bcmbca_hsspi) = { + .name = "bcmbca_hsspi", + .id = UCLASS_SPI, + .of_match = bcmbca_hsspi_ids, + .ops = &bcmbca_hsspi_ops, + .priv_auto = sizeof(struct bcmbca_hsspi_priv), + .child_pre_probe = bcmbca_hsspi_child_pre_probe, + .probe = bcmbca_hsspi_probe, +}; diff --git a/drivers/spi/npcm_pspi.c b/drivers/spi/npcm_pspi.c index bd9ac654113..37bab709672 100644 --- a/drivers/spi/npcm_pspi.c +++ b/drivers/spi/npcm_pspi.c @@ -40,7 +40,7 @@ static inline void spi_cs_activate(struct udevice *dev) struct udevice *bus = dev->parent; struct npcm_pspi_priv *priv = dev_get_priv(bus); - dm_gpio_set_value(&priv->cs_gpio, 0); + dm_gpio_set_value(&priv->cs_gpio, 1); } static inline void spi_cs_deactivate(struct udevice *dev) @@ -48,7 +48,7 @@ static inline void spi_cs_deactivate(struct udevice *dev) struct udevice *bus = dev->parent; struct npcm_pspi_priv *priv = dev_get_priv(bus); - dm_gpio_set_value(&priv->cs_gpio, 1); + dm_gpio_set_value(&priv->cs_gpio, 0); } static inline void npcm_pspi_enable(struct npcm_pspi_priv *priv) @@ -122,6 +122,9 @@ static int npcm_pspi_xfer(struct udevice *dev, unsigned int bitlen, if (flags & SPI_XFER_END) spi_cs_deactivate(dev); + debug("npcm_pspi_xfer: slave %s:%s dout %08X din %08X bitlen %u\n", + dev->parent->name, dev->name, *(uint *)tx, *(uint *)rx, bitlen); + npcm_pspi_disable(priv); return ret; @@ -183,6 +186,7 @@ static int npcm_pspi_set_mode(struct udevice *bus, uint mode) val |= pspi_mode; writew(val, priv->base + PSPI_CTL1); + debug("%s: mode=%u\n", __func__, mode); return 0; } @@ -197,9 +201,9 @@ static int npcm_pspi_probe(struct udevice *bus) return ret; priv->base = dev_read_addr_ptr(bus); - priv->max_hz = dev_read_u32_default(bus, "spi-max-frequency", 0); + priv->max_hz = dev_read_u32_default(bus, "spi-max-frequency", 1000000); gpio_request_by_name_nodev(offset_to_ofnode(node), "cs-gpios", 0, - &priv->cs_gpio, GPIOD_IS_OUT); + &priv->cs_gpio, GPIOD_IS_OUT| GPIOD_ACTIVE_LOW); return 0; } diff --git a/drivers/spi/pl022_spi.c b/drivers/spi/pl022_spi.c index 828eab3d342..fc7388b379d 100644 --- a/drivers/spi/pl022_spi.c +++ b/drivers/spi/pl022_spi.c @@ -12,9 +12,11 @@ #include <clk.h> #include <common.h> #include <dm.h> -#include <dm/platform_data/spi_pl022.h> +#include <dm/device_compat.h> +#include <fdtdec.h> #include <linux/io.h> #include <asm/global_data.h> +#include <asm/gpio.h> #include <spi.h> #define SSP_CR0 0x000 @@ -66,6 +68,15 @@ #define SSP_SR_MASK_RFF (0x1 << 3) /* Receive FIFO full */ #define SSP_SR_MASK_BSY (0x1 << 4) /* Busy Flag */ +struct pl022_spi_pdata { + fdt_addr_t addr; + fdt_size_t size; + unsigned int freq; +#if CONFIG_IS_ENABLED(DM_GPIO) + struct gpio_desc cs_gpio; +#endif +}; + struct pl022_spi_slave { void *base; unsigned int freq; @@ -107,7 +118,7 @@ static int pl022_spi_probe(struct udevice *bus) return 0; } -static void flush(struct pl022_spi_slave *ps) +static void pl022_spi_flush(struct pl022_spi_slave *ps) { do { while (readw(ps->base + SSP_SR) & SSP_SR_MASK_RNE) @@ -126,7 +137,7 @@ static int pl022_spi_claim_bus(struct udevice *dev) reg |= SSP_CR1_MASK_SSE; writew(reg, ps->base + SSP_CR1); - flush(ps); + pl022_spi_flush(ps); return 0; } @@ -137,7 +148,7 @@ static int pl022_spi_release_bus(struct udevice *dev) struct pl022_spi_slave *ps = dev_get_priv(bus); u16 reg; - flush(ps); + pl022_spi_flush(ps); /* Disable the SPI hardware */ reg = readw(ps->base + SSP_CR1); @@ -147,6 +158,17 @@ static int pl022_spi_release_bus(struct udevice *dev) return 0; } +static void pl022_spi_set_cs(struct udevice *dev, bool on) +{ +#if CONFIG_IS_ENABLED(DM_GPIO) + struct udevice *bus = dev->parent; + struct pl022_spi_pdata *plat = dev_get_plat(bus); + + if (dm_gpio_is_valid(&plat->cs_gpio)) + dm_gpio_set_value(&plat->cs_gpio, on ? 1 : 0); +#endif +} + static int pl022_spi_xfer(struct udevice *dev, unsigned int bitlen, const void *dout, void *din, unsigned long flags) { @@ -159,7 +181,7 @@ static int pl022_spi_xfer(struct udevice *dev, unsigned int bitlen, if (bitlen == 0) /* Finish any previously submitted transfers */ - return 0; + goto done; /* * TODO: The controller can do non-multiple-of-8 bit @@ -172,9 +194,13 @@ static int pl022_spi_xfer(struct udevice *dev, unsigned int bitlen, if (bitlen % 8) { /* Errors always terminate an ongoing transfer */ flags |= SPI_XFER_END; - return -1; + ret = -1; + goto done; } + if (flags & SPI_XFER_BEGIN) + pl022_spi_set_cs(dev, true); + len = bitlen / 8; while (len_tx < len) { @@ -201,6 +227,10 @@ static int pl022_spi_xfer(struct udevice *dev, unsigned int bitlen, } } +done: + if (flags & SPI_XFER_END) + pl022_spi_set_cs(dev, false); + return ret; } @@ -303,11 +333,18 @@ static int pl022_spi_of_to_plat(struct udevice *bus) plat->freq = clk_get_rate(&clkdev); +#if CONFIG_IS_ENABLED(DM_GPIO) + ret = gpio_request_by_name(bus, "cs-gpios", 0, &plat->cs_gpio, + GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); + if (ret < 0 && ret != -ENOENT) + return ret; +#endif + return 0; } static const struct udevice_id pl022_spi_ids[] = { - { .compatible = "arm,pl022-spi" }, + { .compatible = "arm,pl022" }, { } }; #endif diff --git a/drivers/spi/soft_spi.c b/drivers/spi/soft_spi.c index f3602a25ba3..0fa14339bdc 100644 --- a/drivers/spi/soft_spi.c +++ b/drivers/spi/soft_spi.c @@ -248,20 +248,33 @@ static int soft_spi_probe(struct udevice *dev) cs_flags = (slave && slave->mode & SPI_CS_HIGH) ? 0 : GPIOD_ACTIVE_LOW; clk_flags = (slave && slave->mode & SPI_CPOL) ? GPIOD_ACTIVE_LOW : 0; - if (gpio_request_by_name(dev, "cs-gpios", 0, &plat->cs, - GPIOD_IS_OUT | cs_flags) || - gpio_request_by_name(dev, "gpio-sck", 0, &plat->sclk, - GPIOD_IS_OUT | clk_flags)) + ret = gpio_request_by_name(dev, "cs-gpios", 0, &plat->cs, + GPIOD_IS_OUT | cs_flags); + if (ret) + return -EINVAL; + + ret = gpio_request_by_name(dev, "gpio-sck", 0, &plat->sclk, + GPIOD_IS_OUT | clk_flags); + if (ret) + ret = gpio_request_by_name(dev, "sck-gpios", 0, &plat->sclk, + GPIOD_IS_OUT | clk_flags); + if (ret) return -EINVAL; ret = gpio_request_by_name(dev, "gpio-mosi", 0, &plat->mosi, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); if (ret) + ret = gpio_request_by_name(dev, "mosi-gpios", 0, &plat->mosi, + GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); + if (ret) plat->flags |= SPI_MASTER_NO_TX; ret = gpio_request_by_name(dev, "gpio-miso", 0, &plat->miso, GPIOD_IS_IN); if (ret) + ret = gpio_request_by_name(dev, "gpio-miso", 0, &plat->miso, + GPIOD_IS_IN); + if (ret) plat->flags |= SPI_MASTER_NO_RX; if ((plat->flags & (SPI_MASTER_NO_RX | SPI_MASTER_NO_TX)) == diff --git a/drivers/spi/spi-synquacer.c b/drivers/spi/spi-synquacer.c index 0f5d0a30c39..553f9687e3b 100644 --- a/drivers/spi/spi-synquacer.c +++ b/drivers/spi/spi-synquacer.c @@ -186,7 +186,7 @@ static void synquacer_spi_config(struct udevice *dev, void *rx, const void *tx) struct udevice *bus = dev->parent; struct synquacer_spi_priv *priv = dev_get_priv(bus); struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev); - u32 val, div, bus_width = 1; + u32 val, div, bus_width; int rwflag; rwflag = (rx ? 1 : 0) | (tx ? 2 : 0); @@ -203,16 +203,14 @@ static void synquacer_spi_config(struct udevice *dev, void *rx, const void *tx) priv->mode = slave_plat->mode; priv->speed = slave_plat->max_hz; - if (priv->mode & SPI_TX_BYTE) - bus_width = 1; - else if (priv->mode & SPI_TX_DUAL) + if (priv->mode & SPI_TX_DUAL) bus_width = 2; else if (priv->mode & SPI_TX_QUAD) bus_width = 4; else if (priv->mode & SPI_TX_OCTAL) bus_width = 8; else - log_warning("SPI mode not configured, setting to byte mode\n"); + bus_width = 1; /* default is single bit mode */ div = DIV_ROUND_UP(125000000, priv->speed); |