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Merge branch 'master' of git://git.denx.de/u-boot-spi

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This commit is contained in:
Tom Rini 2015-07-14 14:13:23 -04:00
commit 4905dfc65d
15 changed files with 151 additions and 41 deletions
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3
arch/arm/Kconfig
View file

@ -227,6 +227,9 @@ config TARGET_STV0991
select CPU_V7
select DM
select DM_SERIAL
select DM_SPI
select DM_SPI_FLASH
select SPI_FLASH
config TARGET_X600
bool "Support x600"

4
arch/arm/cpu/armv7/stv0991/clock.c
View file

@ -33,7 +33,9 @@ void clock_setup(int peripheral)
/* Clock selection for ethernet tx_clk & rx_clk*/
writel((readl(&stv0991_cgu_regs->eth_ctrl) & ETH_CLK_MASK)
| ETH_CLK_CTRL, &stv0991_cgu_regs->eth_ctrl);
break;
case QSPI_CLOCK_CFG:
writel(QSPI_CLK_CTRL, &stv0991_cgu_regs->qspi_freq);
break;
default:
break;

5
arch/arm/cpu/armv7/stv0991/pinmux.c
View file

@ -55,6 +55,11 @@ int stv0991_pinmux_config(int peripheral)
ETH_M_VDD_CFG, &stv0991_creg->vdd_pad1);
break;
case QSPI_CS_CLK_PAD:
writel((readl(&stv0991_creg->mux13) & FLASH_CS_NC_MASK) |
CFG_FLASH_CS_NC, &stv0991_creg->mux13);
writel((readl(&stv0991_creg->mux13) & FLASH_CLK_MASK) |
CFG_FLASH_CLK, &stv0991_creg->mux13);
default:
break;
}

1
arch/arm/dts/socfpga.dtsi
View file

@ -639,6 +639,7 @@
ext-decoder = <0>; /* external decoder */
num-cs = <4>;
fifo-depth = <128>;
sram-size = <128>;
bus-num = <2>;
status = "disabled";
};

30
arch/arm/dts/stv0991.dts
View file

@ -20,4 +20,34 @@
reg = <0x80406000 0x1000>;
clock = <2700000>;
};
aliases {
spi0 = "/spi@80203000"; /* QSPI */
};
qspi: spi@80203000 {
compatible = "cadence,qspi";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x80203000 0x100>,
<0x40000000 0x1000000>;
clocks = <3750000>;
sram-size = <256>;
status = "okay";
flash0: n25q32@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "spi-flash";
reg = <0>; /* chip select */
spi-max-frequency = <50000000>;
m25p,fast-read;
page-size = <256>;
block-size = <16>; /* 2^16, 64KB */
tshsl-ns = <50>;
tsd2d-ns = <50>;
tchsh-ns = <4>;
tslch-ns = <4>;
};
};
};

15
arch/arm/include/asm/arch-stv0991/stv0991_cgu.h
View file

@ -113,4 +113,19 @@ struct stv0991_cgu_regs {
#define ETH_CLK_CTRL (ETH_CLK_RX_EXT_PHY << RX_CLK_SHIFT \
| ETH_CLK_TX_EXT_PHY)
/* CGU qspi clock */
#define DIV_HCLK1_SHIFT 9
#define DIV_CRYP_SHIFT 6
#define MDIV_QSPI_SHIFT 3
#define CLK_QSPI_OSC 0
#define CLK_QSPI_MCLK 1
#define CLK_QSPI_PLL1 2
#define CLK_QSPI_PLL2 3
#define QSPI_CLK_CTRL (3 << DIV_HCLK1_SHIFT \
| 1 << DIV_CRYP_SHIFT \
| 0 << MDIV_QSPI_SHIFT \
| CLK_QSPI_OSC)
#endif

9
arch/arm/include/asm/arch-stv0991/stv0991_creg.h
View file

@ -49,6 +49,15 @@ struct stv0991_creg {
u32 vdd_comp1; /* offset 0x400 */
};
/* CREG MUX 13 register */
#define FLASH_CS_NC_SHIFT 4
#define FLASH_CS_NC_MASK ~(7 << FLASH_CS_NC_SHIFT)
#define CFG_FLASH_CS_NC (0 << FLASH_CS_NC_SHIFT)
#define FLASH_CLK_SHIFT 0
#define FLASH_CLK_MASK ~(7 << FLASH_CLK_SHIFT)
#define CFG_FLASH_CLK (0 << FLASH_CLK_SHIFT)
/* CREG MUX 12 register */
#define GPIOC_30_MUX_SHIFT 24
#define GPIOC_30_MUX_MASK ~(1 << GPIOC_30_MUX_SHIFT)

2
arch/arm/include/asm/arch-stv0991/stv0991_periph.h
View file

@ -18,6 +18,7 @@ enum periph_id {
UART_GPIOC_30_31 = 0,
UART_GPIOB_16_17,
ETH_GPIOB_10_31_C_0_4,
QSPI_CS_CLK_PAD,
PERIPH_ID_I2C0,
PERIPH_ID_I2C1,
PERIPH_ID_I2C2,
@ -39,6 +40,7 @@ enum periph_id {
enum periph_clock {
UART_CLOCK_CFG = 0,
ETH_CLOCK_CFG,
QSPI_CLOCK_CFG,
};
#endif /* __ASM_ARM_ARCH_PERIPH_H */

8
board/st/stv0991/stv0991.c
View file

@ -55,12 +55,20 @@ int board_eth_enable(void)
return 0;
}
int board_qspi_enable(void)
{
stv0991_pinmux_config(QSPI_CS_CLK_PAD);
clock_setup(QSPI_CLOCK_CFG);
return 0;
}
/*
* Miscellaneous platform dependent initialisations
*/
int board_init(void)
{
board_eth_enable();
board_qspi_enable();
return 0;
}

2
configs/stv0991_defconfig
View file

@ -7,8 +7,8 @@ CONFIG_AUTOBOOT_KEYED=y
CONFIG_AUTOBOOT_PROMPT="Hit SPACE in %d seconds to stop autoboot.\n"
CONFIG_AUTOBOOT_STOP_STR=" "
# CONFIG_CMD_IMLS is not set
# CONFIG_CMD_SAVEENV is not set
# CONFIG_CMD_FLASH is not set
# CONFIG_CMD_SETEXPR is not set
CONFIG_NETDEVICES=y
CONFIG_ETH_DESIGNWARE=y
CONFIG_OF_CONTROL=y

28
doc/device-tree-bindings/spi/spi-cadence.txt Normal file
View file

@ -0,0 +1,28 @@
Cadence QSPI controller device tree bindings
--------------------------------------------
Required properties:
- compatible : should be "cadence,qspi".
- reg : 1.Physical base address and size of SPI registers map.
2. Physical base address & size of NOR Flash.
- clocks : Clock phandles (see clock bindings for details).
- sram-size : spi controller sram size.
- status : enable in requried dts.
connected flash properties
--------------------------
- spi-max-frequency : Max supported spi frequency.
- page-size : Flash page size.
- block-size : Flash memory block size.
- tshsl-ns : Added delay in master reference clocks (ref_clk) for
the length that the master mode chip select outputs
are de-asserted between transactions.
- tsd2d-ns : Delay in master reference clocks (ref_clk) between one
chip select being de-activated and the activation of
another.
- tchsh-ns : Delay in master reference clocks between last bit of
current transaction and de-asserting the device chip
select (n_ss_out).
- tslch-ns : Delay in master reference clocks between setting
n_ss_out low and first bit transfer

1
drivers/spi/cadence_qspi.c
View file

@ -309,6 +309,7 @@ static int cadence_spi_ofdata_to_platdata(struct udevice *bus)
plat->tsd2d_ns = fdtdec_get_int(blob, subnode, "tsd2d-ns", 255);
plat->tchsh_ns = fdtdec_get_int(blob, subnode, "tchsh-ns", 20);
plat->tslch_ns = fdtdec_get_int(blob, subnode, "tslch-ns", 20);
plat->sram_size = fdtdec_get_int(blob, node, "sram-size", 128);
debug("%s: regbase=%p ahbbase=%p max-frequency=%d page-size=%d\n",
__func__, plat->regbase, plat->ahbbase, plat->max_hz,

1
drivers/spi/cadence_qspi.h
View file

@ -25,6 +25,7 @@ struct cadence_spi_platdata {
u32 tsd2d_ns;
u32 tchsh_ns;
u32 tslch_ns;
u32 sram_size;
};
struct cadence_spi_priv {

62
drivers/spi/cadence_qspi_apb.c
View file

@ -36,12 +36,6 @@
#define CQSPI_FIFO_WIDTH (4)
/* Controller sram size in word */
#define CQSPI_REG_SRAM_SIZE_WORD (128)
#define CQSPI_REG_SRAM_RESV_WORDS (2)
#define CQSPI_REG_SRAM_PARTITION_WR (1)
#define CQSPI_REG_SRAM_PARTITION_RD \
(CQSPI_REG_SRAM_SIZE_WORD - CQSPI_REG_SRAM_RESV_WORDS)
#define CQSPI_REG_SRAM_THRESHOLD_WORDS (50)
/* Transfer mode */
@ -206,18 +200,16 @@ static void cadence_qspi_apb_read_fifo_data(void *dest,
unsigned int *dest_ptr = (unsigned int *)dest;
unsigned int *src_ptr = (unsigned int *)src_ahb_addr;
while (remaining > 0) {
if (remaining >= CQSPI_FIFO_WIDTH) {
*dest_ptr = readl(src_ptr);
remaining -= CQSPI_FIFO_WIDTH;
} else {
/* dangling bytes */
temp = readl(src_ptr);
memcpy(dest_ptr, &temp, remaining);
break;
}
while (remaining >= sizeof(dest_ptr)) {
*dest_ptr = readl(src_ptr);
remaining -= sizeof(src_ptr);
dest_ptr++;
}
if (remaining) {
/* dangling bytes */
temp = readl(src_ptr);
memcpy(dest_ptr, &temp, remaining);
}
return;
}
@ -225,24 +217,26 @@ static void cadence_qspi_apb_read_fifo_data(void *dest,
static void cadence_qspi_apb_write_fifo_data(const void *dest_ahb_addr,
const void *src, unsigned int bytes)
{
unsigned int temp;
unsigned int temp = 0;
int i;
int remaining = bytes;
unsigned int *dest_ptr = (unsigned int *)dest_ahb_addr;
unsigned int *src_ptr = (unsigned int *)src;
while (remaining > 0) {
if (remaining >= CQSPI_FIFO_WIDTH) {
writel(*src_ptr, dest_ptr);
remaining -= sizeof(unsigned int);
} else {
/* dangling bytes */
memcpy(&temp, src_ptr, remaining);
writel(temp, dest_ptr);
break;
}
src_ptr++;
while (remaining >= CQSPI_FIFO_WIDTH) {
for (i = CQSPI_FIFO_WIDTH/sizeof(src_ptr) - 1; i >= 0; i--)
writel(*(src_ptr+i), dest_ptr+i);
src_ptr += CQSPI_FIFO_WIDTH/sizeof(src_ptr);
remaining -= CQSPI_FIFO_WIDTH;
}
if (remaining) {
/* dangling bytes */
i = remaining/sizeof(dest_ptr);
memcpy(&temp, src_ptr+i, remaining % sizeof(dest_ptr));
writel(temp, dest_ptr+i);
for (--i; i >= 0; i--)
writel(*(src_ptr+i), dest_ptr+i);
}
return;
}
@ -538,6 +532,9 @@ void cadence_qspi_apb_controller_init(struct cadence_spi_platdata *plat)
/* Configure the remap address register, no remap */
writel(0, plat->regbase + CQSPI_REG_REMAP);
/* Indirect mode configurations */
writel((plat->sram_size/2), plat->regbase + CQSPI_REG_SRAMPARTITION);
/* Disable all interrupts */
writel(0, plat->regbase + CQSPI_REG_IRQMASK);
@ -700,10 +697,6 @@ int cadence_qspi_apb_indirect_read_setup(struct cadence_spi_platdata *plat,
writel(((u32)plat->ahbbase & CQSPI_INDIRECTTRIGGER_ADDR_MASK),
plat->regbase + CQSPI_REG_INDIRECTTRIGGER);
/* Configure SRAM partition for read. */
writel(CQSPI_REG_SRAM_PARTITION_RD, plat->regbase +
CQSPI_REG_SRAMPARTITION);
/* Configure the opcode */
rd_reg = cmdbuf[0] << CQSPI_REG_RD_INSTR_OPCODE_LSB;
@ -801,9 +794,6 @@ int cadence_qspi_apb_indirect_write_setup(struct cadence_spi_platdata *plat,
writel(((u32)plat->ahbbase & CQSPI_INDIRECTTRIGGER_ADDR_MASK),
plat->regbase + CQSPI_REG_INDIRECTTRIGGER);
writel(CQSPI_REG_SRAM_PARTITION_WR,
plat->regbase + CQSPI_REG_SRAMPARTITION);
/* Configure the opcode */
reg = cmdbuf[0] << CQSPI_REG_WR_INSTR_OPCODE_LSB;
writel(reg, plat->regbase + CQSPI_REG_WR_INSTR);

21
include/configs/stv0991.h
View file

@ -23,7 +23,9 @@
#define PHYS_SDRAM_1_SIZE 0x00198000
#define CONFIG_ENV_SIZE 0x10000
#define CONFIG_ENV_IS_IN_FLASH
#define CONFIG_ENV_IS_IN_SPI_FLASH
#define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
#define CONFIG_ENV_OFFSET 0x30000
#define CONFIG_ENV_ADDR \
(PHYS_SDRAM_1_SIZE - CONFIG_ENV_SIZE)
#define CONFIG_SYS_MAXARGS 16
@ -72,7 +74,20 @@
#define CONFIG_BOOTDELAY 3
#define CONFIG_BOOTCOMMAND "go 0x40040000"
#define CONFIG_OF_SEPARATE
#define CONFIG_OF_CONTROL
#define CONFIG_OF_LIBFDT
/*
+ * QSPI support
+ */
#ifdef CONFIG_OF_CONTROL /* QSPI is controlled via DT */
#define CONFIG_CADENCE_QSPI
#define CONFIG_CQSPI_DECODER 0
#define CONFIG_CQSPI_REF_CLK ((30/4)/2)*1000*1000
#define CONFIG_CMD_SPI
#define CONFIG_SPI_FLASH_STMICRO /* Micron/Numonyx flash */
#define CONFIG_SPI_FLASH_WINBOND /* WINBOND */
#define CONFIG_CMD_SF
#endif
#endif /* __CONFIG_H */