Some boards cannot do voltage negotiation but need to set the VSELECT bit forcely to ensure it to work at 1.8V.

This commit adds CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT flag for this use.

Signed-off-by: Otavio Salvador otavio@ossystems.com.br ---

Changes in v2: None

doc/README.fsl-esdhc | 1 + drivers/mmc/fsl_esdhc.c | 4 ++++ 2 files changed, 5 insertions(+)

diff --git a/doc/README.fsl-esdhc b/doc/README.fsl-esdhc index b70f271..619c6b2 100644 --- a/doc/README.fsl-esdhc +++ b/doc/README.fsl-esdhc @@ -1,5 +1,6 @@ CONFIG_SYS_FSL_ESDHC_LE means ESDHC IP is in little-endian mode. CONFIG_SYS_FSL_ESDHC_BE means ESDHC IP is in big-endian mode. +CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT forces to run at 1.8V.

Accessing ESDHC registers can be determined by ESDHC IP's endian mode or processor's endian mode. diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index 6a3e147..67ee179 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -523,6 +523,10 @@ static int esdhc_init(struct mmc *mmc) /* Set timout to the maximum value */ esdhc_clrsetbits32(&regs->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);

+#ifdef CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT + esdhc_setbits32(&regs->vendorspec, ESDHC_VENDORSPEC_VSELECT); +#endif + return 0; }

This adds the DATA[4-7] and RST pin definitions.

Signed-off-by: Otavio Salvador otavio@ossystems.com.br ---

Changes in v2: None

arch/arm/include/asm/arch-mx6/mx6sl_pins.h | 5 +++++ 1 file changed, 5 insertions(+)

diff --git a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h index 9ded3d8..10a4a1e 100644 --- a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h +++ b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h @@ -31,7 +31,12 @@ enum { MX6_PAD_SD2_DAT1__USDHC2_DAT1 = IOMUX_PAD(0x0568, 0x0260, 0, 0x0000, 0, 0), MX6_PAD_SD2_DAT2__USDHC2_DAT2 = IOMUX_PAD(0x056C, 0x0264, 0, 0x0000, 0, 0), MX6_PAD_SD2_DAT3__USDHC2_DAT3 = IOMUX_PAD(0x0570, 0x0268, 0, 0x0000, 0, 0), + MX6_PAD_SD2_DAT4__USDHC2_DAT4 = IOMUX_PAD(0X0574, 0X026C, 0, 0X0000, 0, 0), + MX6_PAD_SD2_DAT5__USDHC2_DAT5 = IOMUX_PAD(0X0578, 0X0270, 0, 0X0000, 0, 0), + MX6_PAD_SD2_DAT6__USDHC2_DAT6 = IOMUX_PAD(0X057C, 0X0274, 0, 0X0000, 0, 0), + MX6_PAD_SD2_DAT7__USDHC2_DAT7 = IOMUX_PAD(0X0580, 0X0278, 0, 0X0000, 0, 0), MX6_PAD_SD2_DAT7__GPIO_5_0 = IOMUX_PAD(0x0580, 0x0278, 5, 0x0000, 0, 0), + MX6_PAD_SD2_RST__USDHC2_RST = IOMUX_PAD(0x0584, 0x027C, 0, 0x0000, 0, 0), MX6_PAD_SD3_CLK__USDHC3_CLK = IOMUX_PAD(0x0588, 0x0280, 0, 0x0000, 0, 0), MX6_PAD_SD3_CMD__USDHC3_CMD = IOMUX_PAD(0x058C, 0x0284, 0, 0x0000, 0, 0), MX6_PAD_SD3_DAT0__USDHC3_DAT0 = IOMUX_PAD(0x0590, 0x0288, 0, 0x0000, 0, 0),

The WaRP Board is a Wearable Reference Plaform. The board features:

- Freescale i.MX6 SoloLite processor with 512MB of RAM - Freescale FXOS8700CQ 6-axis Xtrinsic sensor - Freescale Kinetis KL16 MCU - Freescale Xtrinsic MMA955xL intelligent motion sensing platform

The board implements a hybrid architecture to address the evolving needs of the wearables market. The platform consists of a main board and an example daughtercard with the ability to add additional daughtercards for different usage models.

For more information about the project, visit:

http://www.warpboard.org/

Signed-off-by: Otavio Salvador otavio@ossystems.com.br Reviewed-by: Marek Vasut marex@denx.de Acked-by: Stefano Babic sbabic@denx.de ---

Changes in v2: None

arch/arm/Kconfig | 5 ++ board/warp/Kconfig | 12 +++ board/warp/MAINTAINERS | 6 ++ board/warp/Makefile | 8 ++ board/warp/warp.c | 113 ++++++++++++++++++++++++++++ configs/warp_defconfig | 3 + include/configs/warp.h | 198 +++++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 345 insertions(+) create mode 100644 board/warp/Kconfig create mode 100644 board/warp/MAINTAINERS create mode 100644 board/warp/Makefile create mode 100644 board/warp/warp.c create mode 100644 configs/warp_defconfig create mode 100644 include/configs/warp.h

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 1f1ccad..a3eb876 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -608,6 +608,10 @@ config TARGET_WANDBOARD bool "Support wandboard" select CPU_V7

+config TARGET_WARP + bool "Support WaRP" + select CPU_V7 + config TARGET_TITANIUM bool "Support titanium" select CPU_V7 @@ -1013,6 +1017,7 @@ source "board/ttcontrol/vision2/Kconfig" source "board/udoo/Kconfig" source "board/vpac270/Kconfig" source "board/wandboard/Kconfig" +source "board/warp/Kconfig" source "board/woodburn/Kconfig" source "board/xaeniax/Kconfig" source "board/zipitz2/Kconfig" diff --git a/board/warp/Kconfig b/board/warp/Kconfig new file mode 100644 index 0000000..7b569cc --- /dev/null +++ b/board/warp/Kconfig @@ -0,0 +1,12 @@ +if TARGET_WARP + +config SYS_BOARD + default "warp" + +config SYS_SOC + default "mx6" + +config SYS_CONFIG_NAME + default "warp" + +endif diff --git a/board/warp/MAINTAINERS b/board/warp/MAINTAINERS new file mode 100644 index 0000000..ee2114d --- /dev/null +++ b/board/warp/MAINTAINERS @@ -0,0 +1,6 @@ +WaRP BOARD +M: Otavio Salvador otavio@ossystems.com.br +S: Maintained +F: board/warp/ +F: include/configs/warp.h +F: configs/warp_defconfig diff --git a/board/warp/Makefile b/board/warp/Makefile new file mode 100644 index 0000000..c555f87 --- /dev/null +++ b/board/warp/Makefile @@ -0,0 +1,8 @@ +# Copyright (C) 2014 O.S. Systems Software LTDA. +# Copyright (C) 2014 Kynetics LLC. +# Copyright (C) 2014 Revolution Robotics, Inc. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y := warp.o diff --git a/board/warp/warp.c b/board/warp/warp.c new file mode 100644 index 0000000..3b275c2 --- /dev/null +++ b/board/warp/warp.c @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2014, 2015 O.S. Systems Software LTDA. + * Copyright (C) 2014 Kynetics LLC. + * Copyright (C) 2014 Revolution Robotics, Inc. + * + * Author: Otavio Salvador otavio@ossystems.com.br + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm/arch/clock.h> +#include <asm/arch/iomux.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/mx6-pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/gpio.h> +#include <asm/imx-common/iomux-v3.h> +#include <asm/io.h> +#include <linux/sizes.h> +#include <common.h> +#include <watchdog.h> +#include <fsl_esdhc.h> +#include <mmc.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ + PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ + PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ + PAD_CTL_LVE) + +#define USDHC_PAD_CTRL (PAD_CTL_PUS_22K_UP | \ + PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ + PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ + PAD_CTL_LVE) + +int dram_init(void) +{ + gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); + + return 0; +} + +static void setup_iomux_uart(void) +{ + static iomux_v3_cfg_t const uart1_pads[] = { + MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL), + }; + + imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads)); +} + +static struct fsl_esdhc_cfg usdhc_cfg[1] = { + {USDHC2_BASE_ADDR}, +}; + +int board_mmc_getcd(struct mmc *mmc) +{ + return 1; /* Assume boot SD always present */ +} + +int board_mmc_init(bd_t *bis) +{ + static iomux_v3_cfg_t const usdhc2_pads[] = { + MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_RST__USDHC2_RST | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT4__USDHC2_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT5__USDHC2_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT6__USDHC2_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT7__USDHC2_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + }; + + imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads)); + + usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); + return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); +} + +int board_early_init_f(void) +{ + setup_iomux_uart(); + return 0; +} + +int board_init(void) +{ + /* address of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + + return 0; +} + +int board_late_init(void) +{ +#ifdef CONFIG_HW_WATCHDOG + hw_watchdog_init(); +#endif + + return 0; +} + +int checkboard(void) +{ + puts("Board: WaRP Board\n"); + + return 0; +} diff --git a/configs/warp_defconfig b/configs/warp_defconfig new file mode 100644 index 0000000..624a8af --- /dev/null +++ b/configs/warp_defconfig @@ -0,0 +1,3 @@ +CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/mx6slevk/imximage.cfg,MX6SL" +CONFIG_ARM=y +CONFIG_TARGET_WARP=y diff --git a/include/configs/warp.h b/include/configs/warp.h new file mode 100644 index 0000000..82036e4 --- /dev/null +++ b/include/configs/warp.h @@ -0,0 +1,198 @@ +/* + * Copyright (C) 2014 O.S. Systems Software LTDA. + * Copyright (C) 2014 Kynetics LLC. + * Copyright (C) 2014 Revolution Robotics, Inc. + * + * Author: Otavio Salvador otavio@ossystems.com.br + * + * Configuration settings for the WaRP Board + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __CONFIG_H +#define __CONFIG_H + +#include <asm/arch/imx-regs.h> +#include <linux/sizes.h> +#include "mx6_common.h" + +#define CONFIG_MX6 +#define CONFIG_DISPLAY_CPUINFO +#define CONFIG_DISPLAY_BOARDINFO +#define CONFIG_SYS_GENERIC_BOARD + +#define CONFIG_CMDLINE_TAG +#define CONFIG_SETUP_MEMORY_TAGS +#define CONFIG_INITRD_TAG +#define CONFIG_REVISION_TAG + +/* Size of malloc() pool */ +#define CONFIG_SYS_MALLOC_LEN (3 * SZ_1M) + +#define CONFIG_BOARD_EARLY_INIT_F +#define CONFIG_BOARD_LATE_INIT +#define CONFIG_MXC_GPIO + +#define CONFIG_MXC_UART +#define CONFIG_MXC_UART_BASE UART1_IPS_BASE_ADDR + +/* MMC Configs */ +#define CONFIG_FSL_ESDHC +#define CONFIG_FSL_USDHC +#define CONFIG_SYS_FSL_ESDHC_ADDR 0 +#define CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT + +#define CONFIG_MMC +#define CONFIG_CMD_MMC +#define CONFIG_GENERIC_MMC +#define CONFIG_CMD_FAT +#define CONFIG_DOS_PARTITION + +/* allow to overwrite serial and ethaddr */ +#define CONFIG_ENV_OVERWRITE +#define CONFIG_CONS_INDEX 1 +#define CONFIG_BAUDRATE 115200 + +/* FLASH and environment organization */ +#define CONFIG_SYS_NO_FLASH + +/* Command definition */ +#include <config_cmd_default.h> +#undef CONFIG_CMD_NET +#undef CONFIG_CMD_NFS + +#define CONFIG_BOOTDELAY 3 + +#define CONFIG_LOADADDR 0x82000000 +#define CONFIG_SYS_TEXT_BASE 0x87800000 + +/* Miscellaneous configurable options */ +#define CONFIG_SYS_LONGHELP +#define CONFIG_SYS_HUSH_PARSER +#define CONFIG_AUTO_COMPLETE +#define CONFIG_SYS_CBSIZE 256 + +/* Watchdog */ +#define CONFIG_HW_WATCHDOG +#define CONFIG_IMX_WATCHDOG +#define CONFIG_WATCHDOG_TIMEOUT_MSECS 30000 /* 30s */ + +/* Print Buffer Size */ +#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16) +#define CONFIG_SYS_MAXARGS 16 +#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE + +#define CONFIG_SYS_MEMTEST_START 0x80000000 +#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_MEMTEST_START + SZ_256M) + +#define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR + +#define CONFIG_CMDLINE_EDITING +#define CONFIG_STACKSIZE SZ_128K + +/* Physical Memory Map */ +#define CONFIG_NR_DRAM_BANKS 1 +#define PHYS_SDRAM MMDC0_ARB_BASE_ADDR +#define PHYS_SDRAM_SIZE SZ_512M + +#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM +#define CONFIG_SYS_INIT_RAM_ADDR IRAM_BASE_ADDR +#define CONFIG_SYS_INIT_RAM_SIZE IRAM_SIZE + +#define CONFIG_SYS_INIT_SP_OFFSET \ + (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE) +#define CONFIG_SYS_INIT_SP_ADDR \ + (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET) + +#define CONFIG_ENV_OFFSET (6 * SZ_64K) +#define CONFIG_ENV_SIZE SZ_8K +#define CONFIG_ENV_IS_IN_MMC +#define CONFIG_SYS_MMC_ENV_DEV 0 + +/* VDD voltage 1.65 - 1.95 */ +#define CONFIG_SYS_SD_VOLTAGE 0x00000080 + +#define CONFIG_OF_LIBFDT +#define CONFIG_CMD_BOOTZ + +#ifndef CONFIG_SYS_DCACHE_OFF +#define CONFIG_CMD_CACHE +#endif + +#define CONFIG_EXTRA_ENV_SETTINGS \ + "script=boot.scr\0" \ + "image=zImage\0" \ + "console=ttymxc0\0" \ + "fdt_high=0xffffffff\0" \ + "initrd_high=0xffffffff\0" \ + "fdt_file=imx6sl-warp.dtb\0" \ + "fdt_addr=0x88000000\0" \ + "initrd_addr=0x83800000\0" \ + "boot_fdt=try\0" \ + "ip_dyn=yes\0" \ + "mmcdev=0\0" \ + "mmcpart=1\0" \ + "mmcroot=/dev/mmcblk0p2 rootwait rw\0" \ + "mmcargs=setenv bootargs console=${console},${baudrate} " \ + "root=${mmcroot}\0" \ + "loadbootscript=" \ + "fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \ + "bootscript=echo Running bootscript from mmc ...; " \ + "source\0" \ + "loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}\0" \ + "loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}\0" \ + "mmcboot=echo Booting from mmc ...; " \ + "run mmcargs; " \ + "if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \ + "if run loadfdt; then " \ + "bootz ${loadaddr} - ${fdt_addr}; " \ + "else " \ + "if test ${boot_fdt} = try; then " \ + "bootz; " \ + "else " \ + "echo WARN: Cannot load the DT; " \ + "fi; " \ + "fi; " \ + "else " \ + "bootz; " \ + "fi;\0" \ + "netargs=setenv bootargs console=${console},${baudrate} " \ + "root=/dev/nfs " \ + "ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp\0" \ + "netboot=echo Booting from net ...; " \ + "run netargs; " \ + "if test ${ip_dyn} = yes; then " \ + "setenv get_cmd dhcp; " \ + "else " \ + "setenv get_cmd tftp; " \ + "fi; " \ + "${get_cmd} ${image}; " \ + "if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \ + "if ${get_cmd} ${fdt_addr} ${fdt_file}; then " \ + "bootz ${loadaddr} - ${fdt_addr}; " \ + "else " \ + "if test ${boot_fdt} = try; then " \ + "bootz; " \ + "else " \ + "echo WARN: Cannot load the DT; " \ + "fi; " \ + "fi; " \ + "else " \ + "bootz; " \ + "fi;\0" + +#define CONFIG_BOOTCOMMAND \ + "mmc dev ${mmcdev};" \ + "mmc dev ${mmcdev}; if mmc rescan; then " \ + "if run loadbootscript; then " \ + "run bootscript; " \ + "else " \ + "if run loadimage; then " \ + "run mmcboot; " \ + "else run netboot; " \ + "fi; " \ + "fi; " \ + "else run netboot; fi" + +#endif /* __CONFIG_H */

On Tuesday, February 17, 2015 at 01:42:43 PM, Otavio Salvador wrote:

This adds support to switch to 1.8V in case CMD11 succeeds.

Signed-off-by: Otavio Salvador otavio@ossystems.com.br

Changes in v2:

• Fixed split string (Marek)

drivers/mmc/fsl_esdhc.c | 29 ++++++++++++++++++++++------- include/fsl_esdhc.h | 2 ++ include/mmc.h | 1 + 3 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index c55eb28..6a3e147 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -54,19 +54,21 @@ struct fsl_esdhc { uint fevt; /* Force event register */ uint admaes; /* ADMA error status register */ uint adsaddr; /* ADMA system address register */

• char reserved2[160]; /* reserved */

• char reserved2[100]; /* reserved */
• uint vendorspec; /* Vendor Specific register */
• char reserved3[59]; /* reserved */ uint hostver; /* Host controller version register */

• char reserved3[4]; /* reserved */
• uint dmaerraddr; /* DMA error address register */ char reserved4[4]; /* reserved */
• uint dmaerrattr; /* DMA error attribute register */

• uint dmaerraddr; /* DMA error address register */ char reserved5[4]; /* reserved */
• uint dmaerrattr; /* DMA error attribute register */
• char reserved6[4]; /* reserved */ uint hostcapblt2; /* Host controller capabilities register 2 */

• char reserved6[8]; /* reserved */

• char reserved7[8]; /* reserved */ uint tcr; /* Tuning control register */

• char reserved7[28]; /* reserved */

• char reserved8[28]; /* reserved */ uint sddirctl; /* SD direction control register */

• char reserved8[712]; /* reserved */

• char reserved9[712]; /* reserved */ uint scr; /* eSDHC control register */

};

@@ -341,6 +343,15 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) goto out; }

• /* Switch voltage to 1.8V if CMD11 succeeded */
• if (cmd->cmdidx == SD_CMD_SWITCH_UHS18V) {

• esdhc_setbits32(&regs->vendorspec, ESDHC_VENDORSPEC_VSELECT);
  

• printf("Run CMD11 1.8V switch\n");
  

• /* Sleep for 5 ms - max time for card to switch to 1.8V */
  

• udelay(5000);
  

• }
• /* Workaround for ESDHC errata ENGcm03648 */ if (!data && (cmd->resp_type & MMC_RSP_BUSY)) { int timeout = 2500;

@@ -413,6 +424,10 @@ out: while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTD)) ;

This endless loop could use fixing ... anyone ?

}

• /* If this was CMD11, then notify that power cycle is needed */
  

• if (cmd->cmdidx == SD_CMD_SWITCH_UHS18V)
  

• 	printf("CMD11 to switch to 1.8V mode failed, card 
  

requires power

cycle.\n"); }

esdhc_write32(&regs->irqstat, -1);

Reviewed-by: Marek Vasut marex@denx.de