[U-Boot] [PATCH v4 1/3] spi:rewrite the Freescale DSPI driver.
From: Chao Fu B44548@freescale.com
Freescale DSPI module is used on both the ColdFire platform and the ARM platform. The original DSPI driver is written for ColdFire platform only, this patch rewrite the driver to make it be used across the platforms. Some files, functions, variables and macros were changed accordingly for some ColdFire boards and Arm boards. The rewrite including the following changes:
Rename the file name : cf_spi.c -> fsl_dspi.c Move the file: arch/m68k/include/asm/coldfire/dspi.h -> include/fsl_dspi.h Rename the functions and variables: cfxxx -> dspixxx Renamed macros: CONFIG_CF_DSPI -> CONFIG_FSL_DSPI Keep the following functions for ColdFire: cfspi_port_conf() cfspi_claim_bus() cfspi_release_bus() Add function for ColdFire: get_dspi_clk()
Add endian convert for different platform. dspi_write32() dspi_read32() Tested on board M54455EVB, ls1021a-qds and VF610-twr.
Signed-off-by: Chao Fu B44548@freescale.com Signed-off-by: Alison Wang Huan.Wang@freescale.com --- Change in v2: Merge m68k update and driver update into the patch. Change in v3: Remove some unstandard coding style. Change in v4: Add two-endian support, and ls1021a support.
arch/m68k/cpu/mcf5227x/cpu_init.c | 3 +- arch/m68k/cpu/mcf5227x/speed.c | 7 + arch/m68k/cpu/mcf52x2/speed.c | 7 + arch/m68k/cpu/mcf5445x/cpu_init.c | 3 +- arch/m68k/cpu/mcf5445x/speed.c | 7 + arch/m68k/include/asm/coldfire/dspi.h | 142 ------------- arch/m68k/include/asm/immap_5227x.h | 1 - arch/m68k/include/asm/immap_5301x.h | 1 - arch/m68k/include/asm/immap_5441x.h | 1 - arch/m68k/include/asm/immap_5445x.h | 1 - arch/m68k/include/asm/immap_547x_8x.h | 1 - drivers/spi/Makefile | 2 +- drivers/spi/cf_spi.c | 347 ------------------------------- drivers/spi/fsl_dspi.c | 373 ++++++++++++++++++++++++++++++++++ include/configs/M52277EVB.h | 3 +- include/configs/M54418TWR.h | 3 +- include/configs/M54451EVB.h | 3 +- include/configs/M54455EVB.h | 3 +- include/fsl_dspi.h | 142 +++++++++++++ 19 files changed, 545 insertions(+), 505 deletions(-) delete mode 100644 arch/m68k/include/asm/coldfire/dspi.h delete mode 100644 drivers/spi/cf_spi.c create mode 100644 drivers/spi/fsl_dspi.c create mode 100644 include/fsl_dspi.h
diff --git a/arch/m68k/cpu/mcf5227x/cpu_init.c b/arch/m68k/cpu/mcf5227x/cpu_init.c index 91b5fad..bd0b4ab 100644 --- a/arch/m68k/cpu/mcf5227x/cpu_init.c +++ b/arch/m68k/cpu/mcf5227x/cpu_init.c @@ -16,6 +16,7 @@ #include <asm/io.h> #include <asm/rtc.h> #include <linux/compiler.h> +#include <fsl_dspi.h>
/* * Breath some life into the CPU... @@ -139,7 +140,7 @@ void uart_port_conf(int port) } }
-#ifdef CONFIG_CF_DSPI +#ifdef CONFIG_FSL_DSPI void cfspi_port_conf(void) { gpio_t *gpio = (gpio_t *) MMAP_GPIO; diff --git a/arch/m68k/cpu/mcf5227x/speed.c b/arch/m68k/cpu/mcf5227x/speed.c index 44de4a6..2bfff13 100644 --- a/arch/m68k/cpu/mcf5227x/speed.c +++ b/arch/m68k/cpu/mcf5227x/speed.c @@ -124,3 +124,10 @@ int get_clocks(void)
return (0); } + +#ifdef CONFIG_FSL_DSPI +int get_dspi_clk(void) +{ + return gd->bus_clk; +} +#endif diff --git a/arch/m68k/cpu/mcf52x2/speed.c b/arch/m68k/cpu/mcf52x2/speed.c index c5961d4..69b49c7 100644 --- a/arch/m68k/cpu/mcf52x2/speed.c +++ b/arch/m68k/cpu/mcf52x2/speed.c @@ -83,3 +83,10 @@ int get_clocks (void)
return (0); } + +#ifdef CONFIG_FSL_DSPI +int get_dspi_clk(void) +{ + return gd->bus_clk; +} +#endif diff --git a/arch/m68k/cpu/mcf5445x/cpu_init.c b/arch/m68k/cpu/mcf5445x/cpu_init.c index 9c324dc..bb7a4cd 100644 --- a/arch/m68k/cpu/mcf5445x/cpu_init.c +++ b/arch/m68k/cpu/mcf5445x/cpu_init.c @@ -16,6 +16,7 @@ #include <asm/rtc.h> #include <asm/io.h> #include <linux/compiler.h> +#include <fsl_dspi.h>
#if defined(CONFIG_CMD_NET) #include <config.h> @@ -423,7 +424,7 @@ int fecpin_setclear(struct eth_device *dev, int setclear) } #endif
-#ifdef CONFIG_CF_DSPI +#ifdef CONFIG_FSL_DSPI void cfspi_port_conf(void) { gpio_t *gpio = (gpio_t *) MMAP_GPIO; diff --git a/arch/m68k/cpu/mcf5445x/speed.c b/arch/m68k/cpu/mcf5445x/speed.c index 07a9b35..29c858e 100644 --- a/arch/m68k/cpu/mcf5445x/speed.c +++ b/arch/m68k/cpu/mcf5445x/speed.c @@ -279,3 +279,10 @@ int get_clocks(void)
return (0); } + +#ifdef CONFIG_FSL_DSPI +int get_dspi_clk(void) +{ + return gd->bus_clk; +} +#endif diff --git a/arch/m68k/include/asm/coldfire/dspi.h b/arch/m68k/include/asm/coldfire/dspi.h deleted file mode 100644 index fda7138..0000000 --- a/arch/m68k/include/asm/coldfire/dspi.h +++ /dev/null @@ -1,142 +0,0 @@ -/* - * MCF5227x Internal Memory Map - * - * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. - * TsiChung Liew (Tsi-Chung.Liew@freescale.com) - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#ifndef __DSPI_H__ -#define __DSPI_H__ - -/* DMA Serial Peripheral Interface (DSPI) */ -typedef struct dspi { - u32 mcr; /* 0x00 */ - u32 resv0; /* 0x04 */ - u32 tcr; /* 0x08 */ - u32 ctar[8]; /* 0x0C - 0x28 */ - u32 sr; /* 0x2C */ - u32 irsr; /* 0x30 */ - u32 tfr; /* 0x34 - PUSHR */ - u16 resv1; /* 0x38 */ - u16 rfr; /* 0x3A - POPR */ -#ifdef CONFIG_MCF547x_8x - u32 tfdr[4]; /* 0x3C */ - u8 resv2[0x30]; /* 0x40 */ - u32 rfdr[4]; /* 0x7C */ -#else - u32 tfdr[16]; /* 0x3C */ - u32 rfdr[16]; /* 0x7C */ -#endif -} dspi_t; - -/* Module configuration */ -#define DSPI_MCR_MSTR (0x80000000) -#define DSPI_MCR_CSCK (0x40000000) -#define DSPI_MCR_DCONF(x) (((x)&0x03)<<28) -#define DSPI_MCR_FRZ (0x08000000) -#define DSPI_MCR_MTFE (0x04000000) -#define DSPI_MCR_PCSSE (0x02000000) -#define DSPI_MCR_ROOE (0x01000000) -#define DSPI_MCR_CSIS7 (0x00800000) -#define DSPI_MCR_CSIS6 (0x00400000) -#define DSPI_MCR_CSIS5 (0x00200000) -#define DSPI_MCR_CSIS4 (0x00100000) -#define DSPI_MCR_CSIS3 (0x00080000) -#define DSPI_MCR_CSIS2 (0x00040000) -#define DSPI_MCR_CSIS1 (0x00020000) -#define DSPI_MCR_CSIS0 (0x00010000) -#define DSPI_MCR_MDIS (0x00004000) -#define DSPI_MCR_DTXF (0x00002000) -#define DSPI_MCR_DRXF (0x00001000) -#define DSPI_MCR_CTXF (0x00000800) -#define DSPI_MCR_CRXF (0x00000400) -#define DSPI_MCR_SMPL_PT(x) (((x)&0x03)<<8) -#define DSPI_MCR_HALT (0x00000001) - -/* Transfer count */ -#define DSPI_TCR_SPI_TCNT(x) (((x)&0x0000FFFF)<<16) - -/* Clock and transfer attributes */ -#define DSPI_CTAR_DBR (0x80000000) -#define DSPI_CTAR_TRSZ(x) (((x)&0x0F)<<27) -#define DSPI_CTAR_CPOL (0x04000000) -#define DSPI_CTAR_CPHA (0x02000000) -#define DSPI_CTAR_LSBFE (0x01000000) -#define DSPI_CTAR_PCSSCK(x) (((x)&0x03)<<22) -#define DSPI_CTAR_PCSSCK_7CLK (0x00A00000) -#define DSPI_CTAR_PCSSCK_5CLK (0x00800000) -#define DSPI_CTAR_PCSSCK_3CLK (0x00400000) -#define DSPI_CTAR_PCSSCK_1CLK (0x00000000) -#define DSPI_CTAR_PASC(x) (((x)&0x03)<<20) -#define DSPI_CTAR_PASC_7CLK (0x00300000) -#define DSPI_CTAR_PASC_5CLK (0x00200000) -#define DSPI_CTAR_PASC_3CLK (0x00100000) -#define DSPI_CTAR_PASC_1CLK (0x00000000) -#define DSPI_CTAR_PDT(x) (((x)&0x03)<<18) -#define DSPI_CTAR_PDT_7CLK (0x000A0000) -#define DSPI_CTAR_PDT_5CLK (0x00080000) -#define DSPI_CTAR_PDT_3CLK (0x00040000) -#define DSPI_CTAR_PDT_1CLK (0x00000000) -#define DSPI_CTAR_PBR(x) (((x)&0x03)<<16) -#define DSPI_CTAR_PBR_7CLK (0x00030000) -#define DSPI_CTAR_PBR_5CLK (0x00020000) -#define DSPI_CTAR_PBR_3CLK (0x00010000) -#define DSPI_CTAR_PBR_1CLK (0x00000000) -#define DSPI_CTAR_CSSCK(x) (((x)&0x0F)<<12) -#define DSPI_CTAR_ASC(x) (((x)&0x0F)<<8) -#define DSPI_CTAR_DT(x) (((x)&0x0F)<<4) -#define DSPI_CTAR_BR(x) (((x)&0x0F)) - -/* Status */ -#define DSPI_SR_TCF (0x80000000) -#define DSPI_SR_TXRXS (0x40000000) -#define DSPI_SR_EOQF (0x10000000) -#define DSPI_SR_TFUF (0x08000000) -#define DSPI_SR_TFFF (0x02000000) -#define DSPI_SR_RFOF (0x00080000) -#define DSPI_SR_RFDF (0x00020000) -#define DSPI_SR_TXCTR(x) (((x)&0x0F)<<12) -#define DSPI_SR_TXPTR(x) (((x)&0x0F)<<8) -#define DSPI_SR_RXCTR(x) (((x)&0x0F)<<4) -#define DSPI_SR_RXPTR(x) (((x)&0x0F)) - -/* DMA/interrupt request selct and enable */ -#define DSPI_IRSR_TCFE (0x80000000) -#define DSPI_IRSR_EOQFE (0x10000000) -#define DSPI_IRSR_TFUFE (0x08000000) -#define DSPI_IRSR_TFFFE (0x02000000) -#define DSPI_IRSR_TFFFS (0x01000000) -#define DSPI_IRSR_RFOFE (0x00080000) -#define DSPI_IRSR_RFDFE (0x00020000) -#define DSPI_IRSR_RFDFS (0x00010000) - -/* Transfer control - 32-bit access */ -#define DSPI_TFR_CONT (0x80000000) -#define DSPI_TFR_CTAS(x) (((x)&0x07)<<12) -#define DSPI_TFR_EOQ (0x08000000) -#define DSPI_TFR_CTCNT (0x04000000) -#define DSPI_TFR_CS7 (0x00800000) -#define DSPI_TFR_CS6 (0x00400000) -#define DSPI_TFR_CS5 (0x00200000) -#define DSPI_TFR_CS4 (0x00100000) -#define DSPI_TFR_CS3 (0x00080000) -#define DSPI_TFR_CS2 (0x00040000) -#define DSPI_TFR_CS1 (0x00020000) -#define DSPI_TFR_CS0 (0x00010000) - -/* Transfer Fifo */ -#define DSPI_TFR_TXDATA(x) (((x)&0xFFFF)) - -/* Bit definitions and macros for DRFR */ -#define DSPI_RFR_RXDATA(x) (((x)&0xFFFF)) - -/* Bit definitions and macros for DTFDR group */ -#define DSPI_TFDR_TXDATA(x) (((x)&0x0000FFFF)) -#define DSPI_TFDR_TXCMD(x) (((x)&0x0000FFFF)<<16) - -/* Bit definitions and macros for DRFDR group */ -#define DSPI_RFDR_RXDATA(x) (((x)&0x0000FFFF)) - -#endif /* __DSPI_H__ */ diff --git a/arch/m68k/include/asm/immap_5227x.h b/arch/m68k/include/asm/immap_5227x.h index 2cc4102..18a592e 100644 --- a/arch/m68k/include/asm/immap_5227x.h +++ b/arch/m68k/include/asm/immap_5227x.h @@ -51,7 +51,6 @@ #define MMAP_PLL (CONFIG_SYS_MBAR + 0x000C0000)
#include <asm/coldfire/crossbar.h> -#include <asm/coldfire/dspi.h> #include <asm/coldfire/edma.h> #include <asm/coldfire/eport.h> #include <asm/coldfire/flexbus.h> diff --git a/arch/m68k/include/asm/immap_5301x.h b/arch/m68k/include/asm/immap_5301x.h index 337fe73..6b19023 100644 --- a/arch/m68k/include/asm/immap_5301x.h +++ b/arch/m68k/include/asm/immap_5301x.h @@ -52,7 +52,6 @@ #define MMAP_ESDHC (CONFIG_SYS_MBAR + 0x000CC000)
#include <asm/coldfire/crossbar.h> -#include <asm/coldfire/dspi.h> #include <asm/coldfire/edma.h> #include <asm/coldfire/eport.h> #include <asm/coldfire/flexbus.h> diff --git a/arch/m68k/include/asm/immap_5441x.h b/arch/m68k/include/asm/immap_5441x.h index 4db6145..62cb681 100644 --- a/arch/m68k/include/asm/immap_5441x.h +++ b/arch/m68k/include/asm/immap_5441x.h @@ -78,7 +78,6 @@ #define MMAP_GPIO 0xEC094000
#include <asm/coldfire/crossbar.h> -#include <asm/coldfire/dspi.h> #include <asm/coldfire/edma.h> #include <asm/coldfire/eport.h> #include <asm/coldfire/flexbus.h> diff --git a/arch/m68k/include/asm/immap_5445x.h b/arch/m68k/include/asm/immap_5445x.h index 2b12972..1525f9d 100644 --- a/arch/m68k/include/asm/immap_5445x.h +++ b/arch/m68k/include/asm/immap_5445x.h @@ -55,7 +55,6 @@
#include <asm/coldfire/ata.h> #include <asm/coldfire/crossbar.h> -#include <asm/coldfire/dspi.h> #include <asm/coldfire/edma.h> #include <asm/coldfire/eport.h> #include <asm/coldfire/flexbus.h> diff --git a/arch/m68k/include/asm/immap_547x_8x.h b/arch/m68k/include/asm/immap_547x_8x.h index e1ce220..baa7779 100644 --- a/arch/m68k/include/asm/immap_547x_8x.h +++ b/arch/m68k/include/asm/immap_547x_8x.h @@ -41,7 +41,6 @@ #define MMAP_SRAMCFG (CONFIG_SYS_MBAR + 0x0001FF00) #define MMAP_SEC (CONFIG_SYS_MBAR + 0x00020000)
-#include <asm/coldfire/dspi.h> #include <asm/coldfire/eport.h> #include <asm/coldfire/flexbus.h> #include <asm/coldfire/flexcan.h> diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index b587308..4f39d7d 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -15,7 +15,7 @@ obj-$(CONFIG_ATMEL_DATAFLASH_SPI) += atmel_dataflash_spi.o obj-$(CONFIG_ATMEL_SPI) += atmel_spi.o obj-$(CONFIG_BFIN_SPI) += bfin_spi.o obj-$(CONFIG_BFIN_SPI6XX) += bfin_spi6xx.o -obj-$(CONFIG_CF_SPI) += cf_spi.o +obj-$(CONFIG_FSL_DSPI) += fsl_dspi.o obj-$(CONFIG_CF_QSPI) += cf_qspi.o obj-$(CONFIG_DAVINCI_SPI) += davinci_spi.o obj-$(CONFIG_EXYNOS_SPI) += exynos_spi.o diff --git a/drivers/spi/cf_spi.c b/drivers/spi/cf_spi.c deleted file mode 100644 index 879a809..0000000 --- a/drivers/spi/cf_spi.c +++ /dev/null @@ -1,347 +0,0 @@ -/* - * - * (C) Copyright 2000-2003 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * Copyright (C) 2004-2009 Freescale Semiconductor, Inc. - * TsiChung Liew (Tsi-Chung.Liew@freescale.com) - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <spi.h> -#include <malloc.h> -#include <asm/immap.h> - -struct cf_spi_slave { - struct spi_slave slave; - uint baudrate; - int charbit; -}; - -int cfspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, - void *din, ulong flags); -struct spi_slave *cfspi_setup_slave(struct cf_spi_slave *cfslave, uint mode); -void cfspi_init(void); -void cfspi_tx(u32 ctrl, u16 data); -u16 cfspi_rx(void); - -extern void cfspi_port_conf(void); -extern int cfspi_claim_bus(uint bus, uint cs); -extern void cfspi_release_bus(uint bus, uint cs); - -DECLARE_GLOBAL_DATA_PTR; - -#ifndef CONFIG_SPI_IDLE_VAL -#if defined(CONFIG_SPI_MMC) -#define CONFIG_SPI_IDLE_VAL 0xFFFF -#else -#define CONFIG_SPI_IDLE_VAL 0x0 -#endif -#endif - -#if defined(CONFIG_CF_DSPI) -/* DSPI specific mode */ -#define SPI_MODE_MOD 0x00200000 -#define SPI_DBLRATE 0x00100000 - -void cfspi_init(void) -{ - volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI; - - cfspi_port_conf(); /* port configuration */ - - dspi->mcr = DSPI_MCR_MSTR | DSPI_MCR_CSIS7 | DSPI_MCR_CSIS6 | - DSPI_MCR_CSIS5 | DSPI_MCR_CSIS4 | DSPI_MCR_CSIS3 | - DSPI_MCR_CSIS2 | DSPI_MCR_CSIS1 | DSPI_MCR_CSIS0 | - DSPI_MCR_CRXF | DSPI_MCR_CTXF; - - /* Default setting in platform configuration */ -#ifdef CONFIG_SYS_DSPI_CTAR0 - dspi->ctar[0] = CONFIG_SYS_DSPI_CTAR0; -#endif -#ifdef CONFIG_SYS_DSPI_CTAR1 - dspi->ctar[1] = CONFIG_SYS_DSPI_CTAR1; -#endif -#ifdef CONFIG_SYS_DSPI_CTAR2 - dspi->ctar[2] = CONFIG_SYS_DSPI_CTAR2; -#endif -#ifdef CONFIG_SYS_DSPI_CTAR3 - dspi->ctar[3] = CONFIG_SYS_DSPI_CTAR3; -#endif -#ifdef CONFIG_SYS_DSPI_CTAR4 - dspi->ctar[4] = CONFIG_SYS_DSPI_CTAR4; -#endif -#ifdef CONFIG_SYS_DSPI_CTAR5 - dspi->ctar[5] = CONFIG_SYS_DSPI_CTAR5; -#endif -#ifdef CONFIG_SYS_DSPI_CTAR6 - dspi->ctar[6] = CONFIG_SYS_DSPI_CTAR6; -#endif -#ifdef CONFIG_SYS_DSPI_CTAR7 - dspi->ctar[7] = CONFIG_SYS_DSPI_CTAR7; -#endif -} - -void cfspi_tx(u32 ctrl, u16 data) -{ - volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI; - - while ((dspi->sr & 0x0000F000) >= 4) ; - - dspi->tfr = (ctrl | data); -} - -u16 cfspi_rx(void) -{ - volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI; - - while ((dspi->sr & 0x000000F0) == 0) ; - - return (dspi->rfr & 0xFFFF); -} - -int cfspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, - void *din, ulong flags) -{ - struct cf_spi_slave *cfslave = (struct cf_spi_slave *)slave; - u16 *spi_rd16 = NULL, *spi_wr16 = NULL; - u8 *spi_rd = NULL, *spi_wr = NULL; - static u32 ctrl = 0; - uint len = bitlen >> 3; - - if (cfslave->charbit == 16) { - bitlen >>= 1; - spi_wr16 = (u16 *) dout; - spi_rd16 = (u16 *) din; - } else { - spi_wr = (u8 *) dout; - spi_rd = (u8 *) din; - } - - if ((flags & SPI_XFER_BEGIN) == SPI_XFER_BEGIN) - ctrl |= DSPI_TFR_CONT; - - ctrl = (ctrl & 0xFF000000) | ((1 << slave->cs) << 16); - - if (len > 1) { - int tmp_len = len - 1; - while (tmp_len--) { - if (dout != NULL) { - if (cfslave->charbit == 16) - cfspi_tx(ctrl, *spi_wr16++); - else - cfspi_tx(ctrl, *spi_wr++); - cfspi_rx(); - } - - if (din != NULL) { - cfspi_tx(ctrl, CONFIG_SPI_IDLE_VAL); - if (cfslave->charbit == 16) - *spi_rd16++ = cfspi_rx(); - else - *spi_rd++ = cfspi_rx(); - } - } - - len = 1; /* remaining byte */ - } - - if ((flags & SPI_XFER_END) == SPI_XFER_END) - ctrl &= ~DSPI_TFR_CONT; - - if (len) { - if (dout != NULL) { - if (cfslave->charbit == 16) - cfspi_tx(ctrl, *spi_wr16); - else - cfspi_tx(ctrl, *spi_wr); - cfspi_rx(); - } - - if (din != NULL) { - cfspi_tx(ctrl, CONFIG_SPI_IDLE_VAL); - if (cfslave->charbit == 16) - *spi_rd16 = cfspi_rx(); - else - *spi_rd = cfspi_rx(); - } - } else { - /* dummy read */ - cfspi_tx(ctrl, CONFIG_SPI_IDLE_VAL); - cfspi_rx(); - } - - return 0; -} - -struct spi_slave *cfspi_setup_slave(struct cf_spi_slave *cfslave, uint mode) -{ - /* - * bit definition for mode: - * bit 31 - 28: Transfer size 3 to 16 bits - * 27 - 26: PCS to SCK delay prescaler - * 25 - 24: After SCK delay prescaler - * 23 - 22: Delay after transfer prescaler - * 21 : Allow overwrite for bit 31-22 and bit 20-8 - * 20 : Double baud rate - * 19 - 16: PCS to SCK delay scaler - * 15 - 12: After SCK delay scaler - * 11 - 8: Delay after transfer scaler - * 7 - 0: SPI_CPHA, SPI_CPOL, SPI_LSB_FIRST - */ - volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI; - int prescaler[] = { 2, 3, 5, 7 }; - int scaler[] = { - 2, 4, 6, 8, - 16, 32, 64, 128, - 256, 512, 1024, 2048, - 4096, 8192, 16384, 32768 - }; - int i, j, pbrcnt, brcnt, diff, tmp, dbr = 0; - int best_i, best_j, bestmatch = 0x7FFFFFFF, baud_speed; - u32 bus_setup = 0; - - tmp = (prescaler[3] * scaler[15]); - /* Maximum and minimum baudrate it can handle */ - if ((cfslave->baudrate > (gd->bus_clk >> 1)) || - (cfslave->baudrate < (gd->bus_clk / tmp))) { - printf("Exceed baudrate limitation: Max %d - Min %d\n", - (int)(gd->bus_clk >> 1), (int)(gd->bus_clk / tmp)); - return NULL; - } - - /* Activate Double Baud when it exceed 1/4 the bus clk */ - if ((CONFIG_SYS_DSPI_CTAR0 & DSPI_CTAR_DBR) || - (cfslave->baudrate > (gd->bus_clk / (prescaler[0] * scaler[0])))) { - bus_setup |= DSPI_CTAR_DBR; - dbr = 1; - } - - if (mode & SPI_CPOL) - bus_setup |= DSPI_CTAR_CPOL; - if (mode & SPI_CPHA) - bus_setup |= DSPI_CTAR_CPHA; - if (mode & SPI_LSB_FIRST) - bus_setup |= DSPI_CTAR_LSBFE; - - /* Overwrite default value set in platform configuration file */ - if (mode & SPI_MODE_MOD) { - - if ((mode & 0xF0000000) == 0) - bus_setup |= - dspi->ctar[cfslave->slave.bus] & 0x78000000; - else - bus_setup |= ((mode & 0xF0000000) >> 1); - - /* - * Check to see if it is enabled by default in platform - * config, or manual setting passed by mode parameter - */ - if (mode & SPI_DBLRATE) { - bus_setup |= DSPI_CTAR_DBR; - dbr = 1; - } - bus_setup |= (mode & 0x0FC00000) >> 4; /* PSCSCK, PASC, PDT */ - bus_setup |= (mode & 0x000FFF00) >> 4; /* CSSCK, ASC, DT */ - } else - bus_setup |= (dspi->ctar[cfslave->slave.bus] & 0x78FCFFF0); - - cfslave->charbit = - ((dspi->ctar[cfslave->slave.bus] & 0x78000000) == - 0x78000000) ? 16 : 8; - - pbrcnt = sizeof(prescaler) / sizeof(int); - brcnt = sizeof(scaler) / sizeof(int); - - /* baudrate calculation - to closer value, may not be exact match */ - for (best_i = 0, best_j = 0, i = 0; i < pbrcnt; i++) { - baud_speed = gd->bus_clk / prescaler[i]; - for (j = 0; j < brcnt; j++) { - tmp = (baud_speed / scaler[j]) * (1 + dbr); - - if (tmp > cfslave->baudrate) - diff = tmp - cfslave->baudrate; - else - diff = cfslave->baudrate - tmp; - - if (diff < bestmatch) { - bestmatch = diff; - best_i = i; - best_j = j; - } - } - } - bus_setup |= (DSPI_CTAR_PBR(best_i) | DSPI_CTAR_BR(best_j)); - dspi->ctar[cfslave->slave.bus] = bus_setup; - - return &cfslave->slave; -} -#endif /* CONFIG_CF_DSPI */ - -#ifdef CONFIG_CF_QSPI -/* 52xx, 53xx */ -#endif /* CONFIG_CF_QSPI */ - -#ifdef CONFIG_CMD_SPI -int spi_cs_is_valid(unsigned int bus, unsigned int cs) -{ - if (((cs >= 0) && (cs < 8)) && ((bus >= 0) && (bus < 8))) - return 1; - else - return 0; -} - -void spi_init_f(void) -{ -} - -void spi_init_r(void) -{ -} - -void spi_init(void) -{ - cfspi_init(); -} - -struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, - unsigned int max_hz, unsigned int mode) -{ - struct cf_spi_slave *cfslave; - - if (!spi_cs_is_valid(bus, cs)) - return NULL; - - cfslave = spi_alloc_slave(struct cf_spi_slave, bus, cs); - if (!cfslave) - return NULL; - - cfslave->baudrate = max_hz; - - /* specific setup */ - return cfspi_setup_slave(cfslave, mode); -} - -void spi_free_slave(struct spi_slave *slave) -{ - free(slave); -} - -int spi_claim_bus(struct spi_slave *slave) -{ - return cfspi_claim_bus(slave->bus, slave->cs); -} - -void spi_release_bus(struct spi_slave *slave) -{ - cfspi_release_bus(slave->bus, slave->cs); -} - -int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, - void *din, unsigned long flags) -{ - return cfspi_xfer(slave, bitlen, dout, din, flags); -} -#endif /* CONFIG_CMD_SPI */ diff --git a/drivers/spi/fsl_dspi.c b/drivers/spi/fsl_dspi.c new file mode 100644 index 0000000..692c283 --- /dev/null +++ b/drivers/spi/fsl_dspi.c @@ -0,0 +1,373 @@ +/* + * (C) Copyright 2000-2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Copyright (C) 2004-2009, 2013 Freescale Semiconductor, Inc. + * TsiChung Liew (Tsi-Chung.Liew@freescale.com) + * Chao Fu (B44548@freescale.com) + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <spi.h> +#include <malloc.h> +#include <asm/io.h> +#include <fsl_dspi.h> + +#if defined(CONFIG_VF610) || defined(CONFIG_LS102xA) +#include <asm/arch/clock.h> +#endif + +#if !defined(CONFIG_VF610) && !defined(CONFIG_LS102xA) +#include <asm/immap.h> +#endif + +#ifdef CONFIG_SYS_FSL_DSPI_LE +#define dspi_read32 in_le32 +#define dspi_write32 out_le32 +#elif defined(CONFIG_SYS_FSL_DSPI_BE) +#define dspi_read32 in_be32 +#define dspi_write32 out_be32 +#else +#error Neither CONFIG_SYS_FSL_DSPI_LE nor CONFIG_SYS_FSL_DSPI_BE is defined +#endif + +struct dspi_slave { + struct spi_slave slave; + struct dspi *regs; + uint baudrate; + int charbit; +}; + +static inline struct dspi_slave *to_dspi_spi(struct spi_slave *slave) +{ + return container_of(slave, struct dspi_slave, slave); +} + +#ifndef CONFIG_SPI_IDLE_VAL +#if defined(CONFIG_SPI_MMC) +#define CONFIG_SPI_IDLE_VAL 0xFFFF +#else +#define CONFIG_SPI_IDLE_VAL 0x0 +#endif +#endif + +#if defined(CONFIG_FSL_DSPI) +/* DSPI specific mode */ +#define SPI_MODE_MOD 0x00200000 +#define SPI_DBLRATE 0x00100000 + +static void dspi_tx(struct dspi_slave *dspislave, u32 ctrl, u16 data) +{ + while ((dspi_read32(&dspislave->regs->sr) & 0x0000F000) >= 4) + ; + + dspi_write32(&dspislave->regs->tfr, (ctrl | data)); +} + +static u16 dspi_rx(struct dspi_slave *dspislave) +{ + while ((dspi_read32(&dspislave->regs->sr) & 0x000000F0) == 0) + ; + + return (u16)(dspi_read32(&dspislave->regs->rfr) & 0xFFFF); +} + +int dspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, + void *din, ulong flags) +{ + struct dspi_slave *dspislave = to_dspi_spi(slave); + u16 *spi_rd16 = NULL, *spi_wr16 = NULL; + u8 *spi_rd = NULL, *spi_wr = NULL; + static u32 ctrl = 0; + uint len = bitlen >> 3; + + if (dspislave->charbit == 16) { + bitlen >>= 1; + spi_wr16 = (u16 *) dout; + spi_rd16 = (u16 *) din; + } else { + spi_wr = (u8 *) dout; + spi_rd = (u8 *) din; + } + + if ((flags & SPI_XFER_BEGIN) == SPI_XFER_BEGIN) + ctrl |= DSPI_TFR_CONT; + + ctrl = (ctrl & 0xFF000000) | ((1 << slave->cs) << 16); + + if (len > 1) { + int tmp_len = len - 1; + while (tmp_len--) { + if (dout != NULL) { + if (dspislave->charbit == 16) + dspi_tx(dspislave, ctrl, *spi_wr16++); + else + dspi_tx(dspislave, ctrl, *spi_wr++); + dspi_rx(dspislave); + } + + if (din != NULL) { + dspi_tx(dspislave, ctrl, CONFIG_SPI_IDLE_VAL); + if (dspislave->charbit == 16) + *spi_rd16++ = dspi_rx(dspislave); + else + *spi_rd++ = dspi_rx(dspislave); + } + } + + len = 1; /* remaining byte */ + } + + if ((flags & SPI_XFER_END) == SPI_XFER_END) + ctrl &= ~DSPI_TFR_CONT; + + if (len) { + if (dout != NULL) { +#ifdef CONFIG_LS102xA + if (flags == SPI_XFER_END) + ctrl |= DSPI_TFR_CONT; +#endif + if (dspislave->charbit == 16) + dspi_tx(dspislave, ctrl, *spi_wr16); + else + dspi_tx(dspislave, ctrl, *spi_wr); + dspi_rx(dspislave); +#ifdef CONFIG_LS102xA + if (flags == SPI_XFER_END) { + ctrl &= ~DSPI_TFR_CONT; + dspi_tx(dspislave, ctrl, CONFIG_SPI_IDLE_VAL); + dspi_rx(dspislave); + } +#endif + } + + if (din != NULL) { + dspi_tx(dspislave, ctrl, CONFIG_SPI_IDLE_VAL); + if (dspislave->charbit == 16) + *spi_rd16 = dspi_rx(dspislave); + else + *spi_rd = dspi_rx(dspislave); + } + } else { + /* dummy read */ + dspi_tx(dspislave, ctrl, CONFIG_SPI_IDLE_VAL); + dspi_rx(dspislave); + } + + return 0; +} + +struct spi_slave *dspi_setup_slave(struct dspi_slave *dspislave, uint mode) +{ + /* + * bit definition for mode: + * bit 31 - 28: Transfer size 3 to 16 bits + * 27 - 26: PCS to SCK delay prescaler + * 25 - 24: After SCK delay prescaler + * 23 - 22: Delay after transfer prescaler + * 21 : Allow overwrite for bit 31-22 and bit 20-8 + * 20 : Double baud rate + * 19 - 16: PCS to SCK delay scaler + * 15 - 12: After SCK delay scaler + * 11 - 8: Delay after transfer scaler + * 7 - 0: SPI_CPHA, SPI_CPOL, SPI_LSB_FIRST + */ + int prescaler[] = { 2, 3, 5, 7 }; + int scaler[] = { + 2, 4, 6, 8, + 16, 32, 64, 128, + 256, 512, 1024, 2048, + 4096, 8192, 16384, 32768 + }; + int i, j, pbrcnt, brcnt, diff, tmp, dbr = 0; + int best_i, best_j, bestmatch = 0x7FFFFFFF, baud_speed, bus_clk; + u32 bus_setup = 0; + + dspislave->regs = (dspi_t *)MMAP_DSPI; + +#if !defined(CONFIG_VF610) && !defined(CONFIG_LS102xA) + cfspi_port_conf(); /* port configuration */ +#endif + + dspi_write32(&dspislave->regs->mcr, + DSPI_MCR_MSTR | DSPI_MCR_CSIS7 | DSPI_MCR_CSIS6 | + DSPI_MCR_CSIS5 | DSPI_MCR_CSIS4 | DSPI_MCR_CSIS3 | + DSPI_MCR_CSIS2 | DSPI_MCR_CSIS1 | DSPI_MCR_CSIS0 | + DSPI_MCR_CRXF | DSPI_MCR_CTXF); + /* Default setting in platform configuration */ +#ifdef CONFIG_SYS_DSPI_CTAR0 + dspi_write32(&dspislave->regs->ctar[0], CONFIG_SYS_DSPI_CTAR0); +#endif +#ifdef CONFIG_SYS_DSPI_CTAR1 + dspi_write32(&dspislave->regs->ctar[1], CONFIG_SYS_DSPI_CTAR1); +#endif +#ifdef CONFIG_SYS_DSPI_CTAR2 + dspi_write32(&dspislave->regs->ctar[2], CONFIG_SYS_DSPI_CTAR2); +#endif +#ifdef CONFIG_SYS_DSPI_CTAR3 + dspi_write32(&dspislave->regs->ctar[3], CONFIG_SYS_DSPI_CTAR3); +#endif +#ifdef CONFIG_SYS_DSPI_CTAR4 + dspi_write32(&dspislave->regs->ctar[4], CONFIG_SYS_DSPI_CTAR4); +#endif +#ifdef CONFIG_SYS_DSPI_CTAR5 + dspi_write32(&dspislave->regs->ctar[5], CONFIG_SYS_DSPI_CTAR5); +#endif +#ifdef CONFIG_SYS_DSPI_CTAR6 + dspi_write32(&dspislave->regs->ctar[6], CONFIG_SYS_DSPI_CTAR6); +#endif +#ifdef CONFIG_SYS_DSPI_CTAR7 + dspi_write32(&dspislave->regs->ctar[7], CONFIG_SYS_DSPI_CTAR7); +#endif + + tmp = (prescaler[3] * scaler[15]); +#if defined(CONFIG_VF610) || defined(CONFIG_LS102xA) + bus_clk = mxc_get_clock(MXC_DSPI_CLK); +#else + bus_clk = get_dspi_clk(); +#endif + /* Maximum and minimum baudrate it can handle */ + if ((dspislave->baudrate > (bus_clk >> 1)) || + (dspislave->baudrate < (bus_clk / tmp))) { + printf("Exceed baudrate limitation: Max %d - Min %d\n", + (int)(bus_clk >> 1), (int)(bus_clk / tmp)); + return NULL; + } + + /* Activate Double Baud when it exceed 1/4 the bus clk */ + if ((CONFIG_SYS_DSPI_CTAR0 & DSPI_CTAR_DBR) || + (dspislave->baudrate > (bus_clk / (prescaler[0] * scaler[0])))) { + bus_setup |= DSPI_CTAR_DBR; + dbr = 1; + } + + if (mode & SPI_CPOL) + bus_setup |= DSPI_CTAR_CPOL; + if (mode & SPI_CPHA) + bus_setup |= DSPI_CTAR_CPHA; + if (mode & SPI_LSB_FIRST) + bus_setup |= DSPI_CTAR_LSBFE; + + /* Overwrite default value set in platform configuration file */ + if (mode & SPI_MODE_MOD) { + + if ((mode & 0xF0000000) == 0) + bus_setup |= + dspi_read32(&dspislave->regs->ctar[dspislave->slave.bus]) + & 0x78000000; + else + bus_setup |= ((mode & 0xF0000000) >> 1); + + /* + * Check to see if it is enabled by default in platform + * config, or manual setting passed by mode parameter + */ + if (mode & SPI_DBLRATE) { + bus_setup |= DSPI_CTAR_DBR; + dbr = 1; + } + bus_setup |= (mode & 0x0FC00000) >> 4; /* PSCSCK, PASC, PDT */ + bus_setup |= (mode & 0x000FFF00) >> 4; /* CSSCK, ASC, DT */ + } else + bus_setup |= dspi_read32(&dspislave->regs->ctar[dspislave->slave.bus]) + & 0x78FCFFF0; + + dspislave->charbit = + ((dspi_read32(&dspislave->regs->ctar[dspislave->slave.bus]) & 0x78000000) + == 0x78000000) ? 16 : 8; + + pbrcnt = sizeof(prescaler) / sizeof(int); + brcnt = sizeof(scaler) / sizeof(int); + + /* baudrate calculation - to closer value, may not be exact match */ + for (best_i = 0, best_j = 0, i = 0; i < pbrcnt; i++) { + baud_speed = bus_clk / prescaler[i]; + for (j = 0; j < brcnt; j++) { + tmp = (baud_speed / scaler[j]) * (1 + dbr); + + if (tmp > dspislave->baudrate) + diff = tmp - dspislave->baudrate; + else + diff = dspislave->baudrate - tmp; + + if (diff < bestmatch) { + bestmatch = diff; + best_i = i; + best_j = j; + } + } + } + + bus_setup |= (DSPI_CTAR_PBR(best_i) | DSPI_CTAR_BR(best_j)); + dspi_write32(&dspislave->regs->ctar[dspislave->slave.bus], bus_setup); + + return &dspislave->slave; +} +#endif /* CONFIG_FSL_DSPI */ + +#ifdef CONFIG_CMD_SPI +int spi_cs_is_valid(unsigned int bus, unsigned int cs) +{ + if (((cs >= 0) && (cs < 8)) && ((bus >= 0) && (bus < 8))) + return 1; + else + return 0; +} + +void spi_init_f(void) +{ +} + +void spi_init_r(void) +{ +} + +void spi_init(void) +{ +} + +struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int mode) +{ + struct dspi_slave *dspislave; + + if (!spi_cs_is_valid(bus, cs)) + return NULL; + dspislave = spi_alloc_slave(struct dspi_slave, bus, cs); + if (!dspislave) + return NULL; + + dspislave->baudrate = max_hz; + /* specific setup */ + return dspi_setup_slave(dspislave, mode); +} + +void spi_free_slave(struct spi_slave *slave) +{ + free(slave); +} + +int spi_claim_bus(struct spi_slave *slave) +{ +#if defined(CONFIG_VF610) || defined(CONFIG_LS102xA) + return 0; +#else + return cfspi_claim_bus(slave->bus, slave->cs); +#endif +} + +void spi_release_bus(struct spi_slave *slave) +{ +#if !defined(CONFIG_VF610) && !defined(CONFIG_LS102xA) + cfspi_release_bus(slave->bus, slave->cs); +#endif +} + +int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, + void *din, unsigned long flags) +{ + return dspi_xfer(slave, bitlen, dout, din, flags); +} +#endif /* CONFIG_CMD_SPI */ diff --git a/include/configs/M52277EVB.h b/include/configs/M52277EVB.h index cde7305..485af4c 100644 --- a/include/configs/M52277EVB.h +++ b/include/configs/M52277EVB.h @@ -137,8 +137,7 @@ #define CONFIG_SYS_IMMR CONFIG_SYS_MBAR
/* DSPI and Serial Flash */ -#define CONFIG_CF_SPI -#define CONFIG_CF_DSPI +#define CONFIG_FSL_DSPI #define CONFIG_HARD_SPI #define CONFIG_SYS_SBFHDR_SIZE 0x7 #ifdef CONFIG_CMD_SPI diff --git a/include/configs/M54418TWR.h b/include/configs/M54418TWR.h index 3d7dc1f..7c1f56b 100644 --- a/include/configs/M54418TWR.h +++ b/include/configs/M54418TWR.h @@ -206,8 +206,7 @@ #define CONFIG_SYS_IMMR CONFIG_SYS_MBAR
/* DSPI and Serial Flash */ -#define CONFIG_CF_SPI -#define CONFIG_CF_DSPI +#define CONFIG_FSL_DSPI #define CONFIG_SERIAL_FLASH #define CONFIG_HARD_SPI #define CONFIG_SYS_SBFHDR_SIZE 0x7 diff --git a/include/configs/M54451EVB.h b/include/configs/M54451EVB.h index 0f4b726..7141601 100644 --- a/include/configs/M54451EVB.h +++ b/include/configs/M54451EVB.h @@ -148,8 +148,7 @@ #define CONFIG_SYS_IMMR CONFIG_SYS_MBAR
/* DSPI and Serial Flash */ -#define CONFIG_CF_SPI -#define CONFIG_CF_DSPI +#define CONFIG_FSL_DSPI #define CONFIG_SERIAL_FLASH #define CONFIG_HARD_SPI #define CONFIG_SYS_SBFHDR_SIZE 0x7 diff --git a/include/configs/M54455EVB.h b/include/configs/M54455EVB.h index 7a55d3c..15b7c40 100644 --- a/include/configs/M54455EVB.h +++ b/include/configs/M54455EVB.h @@ -181,8 +181,7 @@ #define CONFIG_SYS_IMMR CONFIG_SYS_MBAR
/* DSPI and Serial Flash */ -#define CONFIG_CF_SPI -#define CONFIG_CF_DSPI +#define CONFIG_FSL_DSPI #define CONFIG_HARD_SPI #define CONFIG_SYS_SBFHDR_SIZE 0x13 #ifdef CONFIG_CMD_SPI diff --git a/include/fsl_dspi.h b/include/fsl_dspi.h new file mode 100644 index 0000000..36a352e --- /dev/null +++ b/include/fsl_dspi.h @@ -0,0 +1,142 @@ +/* + * Freescale DSPI Module Defines + * + * Copyright (C) 2004-2007, 2013 Freescale Semiconductor, Inc. + * TsiChung Liew (Tsi-Chung.Liew@freescale.com) + * Chao Fu (B44548@freesacle.com) + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __DSPI_H__ +#define __DSPI_H__ + +/* DMA Serial Peripheral Interface (DSPI) */ +typedef struct dspi { + u32 mcr; /* 0x00 */ + u32 resv0; /* 0x04 */ + u32 tcr; /* 0x08 */ + u32 ctar[8]; /* 0x0C - 0x28 */ + u32 sr; /* 0x2C */ + u32 irsr; /* 0x30 */ + u32 tfr; /* 0x34 - PUSHR */ + u32 rfr; /* 0x38 - POPR */ +#ifdef CONFIG_MCF547x_8x + u32 tfdr[4]; /* 0x3C */ + u8 resv2[0x30]; /* 0x40 */ + u32 rfdr[4]; /* 0x7C */ +#else + u32 tfdr[16]; /* 0x3C */ + u32 rfdr[16]; /* 0x7C */ +#endif +} dspi_t; + +/* Module configuration */ +#define DSPI_MCR_MSTR (0x80000000) +#define DSPI_MCR_CSCK (0x40000000) +#define DSPI_MCR_DCONF(x) (((x)&0x03)<<28) +#define DSPI_MCR_FRZ (0x08000000) +#define DSPI_MCR_MTFE (0x04000000) +#define DSPI_MCR_PCSSE (0x02000000) +#define DSPI_MCR_ROOE (0x01000000) +#define DSPI_MCR_CSIS7 (0x00800000) +#define DSPI_MCR_CSIS6 (0x00400000) +#define DSPI_MCR_CSIS5 (0x00200000) +#define DSPI_MCR_CSIS4 (0x00100000) +#define DSPI_MCR_CSIS3 (0x00080000) +#define DSPI_MCR_CSIS2 (0x00040000) +#define DSPI_MCR_CSIS1 (0x00020000) +#define DSPI_MCR_CSIS0 (0x00010000) +#define DSPI_MCR_MDIS (0x00004000) +#define DSPI_MCR_DTXF (0x00002000) +#define DSPI_MCR_DRXF (0x00001000) +#define DSPI_MCR_CTXF (0x00000800) +#define DSPI_MCR_CRXF (0x00000400) +#define DSPI_MCR_SMPL_PT(x) (((x)&0x03)<<8) +#define DSPI_MCR_HALT (0x00000001) + +/* Transfer count */ +#define DSPI_TCR_SPI_TCNT(x) (((x)&0x0000FFFF)<<16) + +/* Clock and transfer attributes */ +#define DSPI_CTAR_DBR (0x80000000) +#define DSPI_CTAR_TRSZ(x) (((x)&0x0F)<<27) +#define DSPI_CTAR_CPOL (0x04000000) +#define DSPI_CTAR_CPHA (0x02000000) +#define DSPI_CTAR_LSBFE (0x01000000) +#define DSPI_CTAR_PCSSCK(x) (((x)&0x03)<<22) +#define DSPI_CTAR_PCSSCK_7CLK (0x00A00000) +#define DSPI_CTAR_PCSSCK_5CLK (0x00800000) +#define DSPI_CTAR_PCSSCK_3CLK (0x00400000) +#define DSPI_CTAR_PCSSCK_1CLK (0x00000000) +#define DSPI_CTAR_PASC(x) (((x)&0x03)<<20) +#define DSPI_CTAR_PASC_7CLK (0x00300000) +#define DSPI_CTAR_PASC_5CLK (0x00200000) +#define DSPI_CTAR_PASC_3CLK (0x00100000) +#define DSPI_CTAR_PASC_1CLK (0x00000000) +#define DSPI_CTAR_PDT(x) (((x)&0x03)<<18) +#define DSPI_CTAR_PDT_7CLK (0x000A0000) +#define DSPI_CTAR_PDT_5CLK (0x00080000) +#define DSPI_CTAR_PDT_3CLK (0x00040000) +#define DSPI_CTAR_PDT_1CLK (0x00000000) +#define DSPI_CTAR_PBR(x) (((x)&0x03)<<16) +#define DSPI_CTAR_PBR_7CLK (0x00030000) +#define DSPI_CTAR_PBR_5CLK (0x00020000) +#define DSPI_CTAR_PBR_3CLK (0x00010000) +#define DSPI_CTAR_PBR_1CLK (0x00000000) +#define DSPI_CTAR_CSSCK(x) (((x)&0x0F)<<12) +#define DSPI_CTAR_ASC(x) (((x)&0x0F)<<8) +#define DSPI_CTAR_DT(x) (((x)&0x0F)<<4) +#define DSPI_CTAR_BR(x) (((x)&0x0F)) + +/* Status */ +#define DSPI_SR_TCF (0x80000000) +#define DSPI_SR_TXRXS (0x40000000) +#define DSPI_SR_EOQF (0x10000000) +#define DSPI_SR_TFUF (0x08000000) +#define DSPI_SR_TFFF (0x02000000) +#define DSPI_SR_RFOF (0x00080000) +#define DSPI_SR_RFDF (0x00020000) +#define DSPI_SR_TXCTR(x) (((x)&0x0F)<<12) +#define DSPI_SR_TXPTR(x) (((x)&0x0F)<<8) +#define DSPI_SR_RXCTR(x) (((x)&0x0F)<<4) +#define DSPI_SR_RXPTR(x) (((x)&0x0F)) + +/* DMA/interrupt request selct and enable */ +#define DSPI_IRSR_TCFE (0x80000000) +#define DSPI_IRSR_EOQFE (0x10000000) +#define DSPI_IRSR_TFUFE (0x08000000) +#define DSPI_IRSR_TFFFE (0x02000000) +#define DSPI_IRSR_TFFFS (0x01000000) +#define DSPI_IRSR_RFOFE (0x00080000) +#define DSPI_IRSR_RFDFE (0x00020000) +#define DSPI_IRSR_RFDFS (0x00010000) + +/* Transfer control - 32-bit access */ +#define DSPI_TFR_CONT (0x80000000) +#define DSPI_TFR_CTAS(x) (((x)&0x07)<<12) +#define DSPI_TFR_EOQ (0x08000000) +#define DSPI_TFR_CTCNT (0x04000000) +#define DSPI_TFR_CS7 (0x00800000) +#define DSPI_TFR_CS6 (0x00400000) +#define DSPI_TFR_CS5 (0x00200000) +#define DSPI_TFR_CS4 (0x00100000) +#define DSPI_TFR_CS3 (0x00080000) +#define DSPI_TFR_CS2 (0x00040000) +#define DSPI_TFR_CS1 (0x00020000) +#define DSPI_TFR_CS0 (0x00010000) + +/* Transfer Fifo */ +#define DSPI_TFR_TXDATA(x) (((x)&0xFFFF)) + +/* Bit definitions and macros for DRFR */ +#define DSPI_RFR_RXDATA(x) (((x)&0xFFFF)) + +/* Bit definitions and macros for DTFDR group */ +#define DSPI_TFDR_TXDATA(x) (((x)&0x0000FFFF)) +#define DSPI_TFDR_TXCMD(x) (((x)&0x0000FFFF)<<16) + +/* Bit definitions and macros for DRFDR group */ +#define DSPI_RFDR_RXDATA(x) (((x)&0x0000FFFF)) + +#endif /* __DSPI_H__ */
From: Chao Fu B44548@freescale.com
This patch enable the DSPI moudle on VF610 platform with following udpate: Add get_dspi_clk() function and enable DPSI clock gate. Add DSPI iomux definition and set the iomux for DSPI.
Signed-off-by: Chao Fu b44548@freescale.com --- Change in v2: Separated vf610-twr update into patch 3/4. Change in v3: None. Change in v4: None.
arch/arm/cpu/armv7/vf610/generic.c | 7 +++++++ arch/arm/include/asm/arch-vf610/clock.h | 1 + arch/arm/include/asm/arch-vf610/crm_regs.h | 1 + arch/arm/include/asm/arch-vf610/iomux-vf610.h | 8 ++++++++ arch/arm/include/asm/imx-common/iomux-v3.h | 2 ++ 5 files changed, 19 insertions(+)
diff --git a/arch/arm/cpu/armv7/vf610/generic.c b/arch/arm/cpu/armv7/vf610/generic.c index a26d63e..266343e 100644 --- a/arch/arm/cpu/armv7/vf610/generic.c +++ b/arch/arm/cpu/armv7/vf610/generic.c @@ -196,6 +196,11 @@ static u32 get_i2c_clk(void) return get_ipg_clk(); }
+static u32 get_dspi_clk(void) +{ + return get_ipg_clk(); +} + unsigned int mxc_get_clock(enum mxc_clock clk) { switch (clk) { @@ -213,6 +218,8 @@ unsigned int mxc_get_clock(enum mxc_clock clk) return get_fec_clk(); case MXC_I2C_CLK: return get_i2c_clk(); + case MXC_DSPI_CLK: + return get_dspi_clk(); default: break; } diff --git a/arch/arm/include/asm/arch-vf610/clock.h b/arch/arm/include/asm/arch-vf610/clock.h index 535adad..e5a5c6d 100644 --- a/arch/arm/include/asm/arch-vf610/clock.h +++ b/arch/arm/include/asm/arch-vf610/clock.h @@ -17,6 +17,7 @@ enum mxc_clock { MXC_ESDHC_CLK, MXC_FEC_CLK, MXC_I2C_CLK, + MXC_DSPI_CLK, };
void enable_ocotp_clk(unsigned char enable); diff --git a/arch/arm/include/asm/arch-vf610/crm_regs.h b/arch/arm/include/asm/arch-vf610/crm_regs.h index 724682c..54fb748 100644 --- a/arch/arm/include/asm/arch-vf610/crm_regs.h +++ b/arch/arm/include/asm/arch-vf610/crm_regs.h @@ -189,6 +189,7 @@ struct anadig_reg { #define CCM_REG_CTRL_MASK 0xffffffff #define CCM_CCGR0_UART0_CTRL_MASK (0x3 << 14) #define CCM_CCGR0_UART1_CTRL_MASK (0x3 << 16) +#define CCM_CCGR0_DSPI0_CTRL_MASK (0x3 << 24) #define CCM_CCGR1_PIT_CTRL_MASK (0x3 << 14) #define CCM_CCGR1_WDOGA5_CTRL_MASK (0x3 << 28) #define CCM_CCGR2_QSPI0_CTRL_MASK (0x3 << 8) diff --git a/arch/arm/include/asm/arch-vf610/iomux-vf610.h b/arch/arm/include/asm/arch-vf610/iomux-vf610.h index 7464da8..fdb7e40 100644 --- a/arch/arm/include/asm/arch-vf610/iomux-vf610.h +++ b/arch/arm/include/asm/arch-vf610/iomux-vf610.h @@ -29,6 +29,10 @@
#define VF610_QSPI_PAD_CTRL (PAD_CTL_SPEED_HIGH | PAD_CTL_DSE_150ohm | \ PAD_CTL_PUS_22K_UP | PAD_CTL_OBE_IBE_ENABLE) +#define VF610_DSPI_PAD_CTRL (PAD_CTL_OBE | PAD_CTL_DSE_25ohm | \ + PAD_CTL_SPEED_MED) +#define VF610_DSPI_SIN_PAD_CTRL (PAD_CTL_IBE | PAD_CTL_DSE_25ohm | \ + PAD_CTL_SPEED_MED)
enum { VF610_PAD_PTA6__RMII0_CLKIN = IOMUX_PAD(0x0000, 0x0000, 2, __NA_, 0, VF610_ENET_PAD_CTRL), @@ -63,6 +67,10 @@ enum { VF610_PAD_PTA29__ESDHC1_DAT3 = IOMUX_PAD(0x004c, 0x004c, 5, __NA_, 0, VF610_SDHC_PAD_CTRL), VF610_PAD_PTB14__I2C0_SCL = IOMUX_PAD(0x0090, 0x0090, 2, 0x033c, 1, VF610_I2C_PAD_CTRL), VF610_PAD_PTB15__I2C0_SDA = IOMUX_PAD(0x0094, 0x0094, 2, 0x0340, 1, VF610_I2C_PAD_CTRL), + VF610_PAD_PTB19__DSPI0_CS0 = IOMUX_PAD(0x00a4, 0x00a4, 1, __NA_, 0, VF610_DSPI_PAD_CTRL), + VF610_PAD_PTB20__DSPI0_SIN = IOMUX_PAD(0x00a8, 0x00a8, 1, __NA_, 0, VF610_DSPI_SIN_PAD_CTRL), + VF610_PAD_PTB21__DSPI0_SOUT = IOMUX_PAD(0x00ac, 0x00ac, 1, __NA_, 0, VF610_DSPI_PAD_CTRL), + VF610_PAD_PTB22__DSPI0_SCK = IOMUX_PAD(0x00b0, 0x00b0, 1, __NA_, 0, VF610_DSPI_PAD_CTRL), VF610_PAD_PTD31__NF_IO15 = IOMUX_PAD(0x00fc, 0x00fc, 2, __NA_, 0, VF610_NFC_IO_PAD_CTRL), VF610_PAD_PTD30__NF_IO14 = IOMUX_PAD(0x0100, 0x0100, 2, __NA_, 0, VF610_NFC_IO_PAD_CTRL), VF610_PAD_PTD29__NF_IO13 = IOMUX_PAD(0x0104, 0x0104, 2, __NA_, 0, VF610_NFC_IO_PAD_CTRL), diff --git a/arch/arm/include/asm/imx-common/iomux-v3.h b/arch/arm/include/asm/imx-common/iomux-v3.h index 70ee86c..afade7e 100644 --- a/arch/arm/include/asm/imx-common/iomux-v3.h +++ b/arch/arm/include/asm/imx-common/iomux-v3.h @@ -152,6 +152,8 @@ typedef u64 iomux_v3_cfg_t; #define PAD_CTL_PUS_47K_UP (1 << 4 | PAD_CTL_PUE) #define PAD_CTL_PUS_100K_UP (2 << 4 | PAD_CTL_PUE) #define PAD_CTL_PUS_22K_UP (3 << 4 | PAD_CTL_PUE) +#define PAD_CTL_OBE (1 << 1) +#define PAD_CTL_IBE (1 << 0)
#define PAD_CTL_ODE (1 << 3)
From: Chao Fu B44548@freescale.com
Enable DSPI iomux for vf610twr board. Add the SPI configuration for vf610twr board.
Signed-off-by: Chao Fu b44548@freescale.com --- Change in v2 : New. Change in v3 : None. Change in v4 : None.
board/freescale/vf610twr/vf610twr.c | 15 ++++++++++++++- include/configs/vf610twr.h | 13 +++++++++++++ 2 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/board/freescale/vf610twr/vf610twr.c b/board/freescale/vf610twr/vf610twr.c index 54a9f2c..08200b5 100644 --- a/board/freescale/vf610twr/vf610twr.c +++ b/board/freescale/vf610twr/vf610twr.c @@ -298,6 +298,18 @@ static void setup_iomux_qspi(void) imx_iomux_v3_setup_multiple_pads(qspi0_pads, ARRAY_SIZE(qspi0_pads)); }
+static void setup_iomux_dspi(void) +{ + static const iomux_v3_cfg_t dspi0_pads[] = { + VF610_PAD_PTB19__DSPI0_CS0, + VF610_PAD_PTB20__DSPI0_SIN, + VF610_PAD_PTB21__DSPI0_SOUT, + VF610_PAD_PTB22__DSPI0_SCK, + }; + + imx_iomux_v3_setup_multiple_pads(dspi0_pads, ARRAY_SIZE(dspi0_pads)); +} + #ifdef CONFIG_FSL_ESDHC struct fsl_esdhc_cfg esdhc_cfg[1] = { {ESDHC1_BASE_ADDR}, @@ -335,7 +347,7 @@ static void clock_init(void) struct anadig_reg *anadig = (struct anadig_reg *)ANADIG_BASE_ADDR;
clrsetbits_le32(&ccm->ccgr0, CCM_REG_CTRL_MASK, - CCM_CCGR0_UART1_CTRL_MASK); + CCM_CCGR0_UART1_CTRL_MASK | CCM_CCGR0_DSPI0_CTRL_MASK); clrsetbits_le32(&ccm->ccgr1, CCM_REG_CTRL_MASK, CCM_CCGR1_PIT_CTRL_MASK | CCM_CCGR1_WDOGA5_CTRL_MASK); clrsetbits_le32(&ccm->ccgr2, CCM_REG_CTRL_MASK, @@ -411,6 +423,7 @@ int board_early_init_f(void) setup_iomux_enet(); setup_iomux_i2c(); setup_iomux_qspi(); + setup_iomux_dspi();
return 0; } diff --git a/include/configs/vf610twr.h b/include/configs/vf610twr.h index 0342550..8c89a6b 100644 --- a/include/configs/vf610twr.h +++ b/include/configs/vf610twr.h @@ -80,6 +80,19 @@ #define CONFIG_SYS_FSL_QSPI_LE #endif
+/* DSPI Configs */ +#ifdef CONFIG_FSL_DSPI +#define MMAP_DSPI SPI0_BASE_ADDR +#define CONFIG_SYS_FSL_DSPI_LE +#define CONFIG_SYS_DSPI_CTAR0 (DSPI_CTAR_TRSZ(7) | \ + DSPI_CTAR_PCSSCK_1CLK | \ + DSPI_CTAR_PASC(0) | \ + DSPI_CTAR_PDT(0) | \ + DSPI_CTAR_CSSCK(0) | \ + DSPI_CTAR_ASC(0) | \ + DSPI_CTAR_DT(0)) +#endif + /* I2C Configs */ #define CONFIG_CMD_I2C #define CONFIG_SYS_I2C
Hi,
On 18 September 2014 23:31, Chao Fu b44548@freescale.com wrote:
From: Chao Fu B44548@freescale.com
Freescale DSPI module is used on both the ColdFire platform and the ARM platform. The original DSPI driver is written for ColdFire platform only, this patch rewrite the driver to make it be used across the platforms. Some files, functions, variables and macros were changed accordingly for some ColdFire boards and Arm boards. The rewrite including the following changes:
If you are doing this, would it not be better to target driver model instead? The current SPI implementation is at u-boot-dm.git branch 'working', although there are patches on the list also.
Regards, Simon
participants (2)
-
Chao Fu -
Simon Glass