diff options
Diffstat (limited to 'board/sandisk/sansa_fuze_plus/sfp.c')
| -rw-r--r-- | board/sandisk/sansa_fuze_plus/sfp.c | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/board/sandisk/sansa_fuze_plus/sfp.c b/board/sandisk/sansa_fuze_plus/sfp.c new file mode 100644 index 000000000..a3865ad56 --- /dev/null +++ b/board/sandisk/sansa_fuze_plus/sfp.c @@ -0,0 +1,388 @@ +/* + * SanDisk Sansa Fuze Plus board + * + * Copyright (C) 2013 Marek Vasut <marex@denx.de> + * + * Hardware investigation done by: + * + * Amaury Pouly <amaury.pouly@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <asm/gpio.h> +#include <asm/io.h> +#include <asm/arch/iomux-mx23.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/clock.h> +#include <asm/arch/sys_proto.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * Functions + */ +int board_early_init_f(void) +{ + /* IO0 clock at 480MHz */ + mxs_set_ioclk(MXC_IOCLK0, 480000); + + /* SSP0 clock at 96MHz */ + mxs_set_sspclk(MXC_SSPCLK0, 96000, 0); + + return 0; +} + +int dram_init(void) +{ + return mxs_dram_init(); +} + +#ifdef CONFIG_CMD_MMC +static int xfi3_mmc_cd(int id) +{ + switch (id) { + case 0: + /* The SSP_DETECT is inverted on this board. */ + return gpio_get_value(MX23_PAD_SSP1_DETECT__GPIO_2_1); + case 1: + /* Internal eMMC always present */ + return 1; + default: + return 0; + } +} + +int board_mmc_init(bd_t *bis) +{ + int ret; + + /* MicroSD slot */ + gpio_direction_input(MX23_PAD_SSP1_DETECT__GPIO_2_1); + gpio_direction_output(MX23_PAD_GPMI_D08__GPIO_0_8, 0); + ret = mxsmmc_initialize(bis, 0, NULL, xfi3_mmc_cd); + if (ret) + return ret; + + /* Internal eMMC */ + gpio_direction_output(MX23_PAD_PWM3__GPIO_1_29, 0); + ret = mxsmmc_initialize(bis, 1, NULL, xfi3_mmc_cd); + + return ret; +} +#endif + +#ifdef CONFIG_VIDEO_MXS +#define MUX_CONFIG_LCD (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL) +const iomux_cfg_t iomux_lcd_gpio[] = { + MX23_PAD_LCD_D00__GPIO_1_0 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D01__GPIO_1_1 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D02__GPIO_1_2 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D03__GPIO_1_3 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D04__GPIO_1_4 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D05__GPIO_1_5 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D06__GPIO_1_6 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D07__GPIO_1_7 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D08__GPIO_1_8 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D09__GPIO_1_9 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D10__GPIO_1_10 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D11__GPIO_1_11 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D12__GPIO_1_12 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D13__GPIO_1_13 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D14__GPIO_1_14 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D15__GPIO_1_15 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D16__GPIO_1_16 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D17__GPIO_1_17 | MUX_CONFIG_LCD, + MX23_PAD_LCD_RESET__GPIO_1_18 | MUX_CONFIG_LCD, + MX23_PAD_LCD_RS__GPIO_1_19 | MUX_CONFIG_LCD, + MX23_PAD_LCD_WR__GPIO_1_20 | MUX_CONFIG_LCD, + MX23_PAD_LCD_CS__GPIO_1_21 | MUX_CONFIG_LCD, + MX23_PAD_LCD_ENABLE__GPIO_1_23 | MUX_CONFIG_LCD, +}; + +const iomux_cfg_t iomux_lcd_lcd[] = { + MX23_PAD_LCD_D00__LCD_D00 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D01__LCD_D01 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D02__LCD_D02 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D03__LCD_D03 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D04__LCD_D04 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D05__LCD_D05 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D06__LCD_D06 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D07__LCD_D07 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D08__LCD_D08 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D09__LCD_D09 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D10__LCD_D10 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D11__LCD_D11 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D12__LCD_D12 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D13__LCD_D13 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D14__LCD_D14 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D15__LCD_D15 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D16__LCD_D16 | MUX_CONFIG_LCD, + MX23_PAD_LCD_D17__LCD_D17 | MUX_CONFIG_LCD, + MX23_PAD_LCD_RESET__LCD_RESET | MUX_CONFIG_LCD, + MX23_PAD_LCD_RS__LCD_RS | MUX_CONFIG_LCD, + MX23_PAD_LCD_WR__LCD_WR | MUX_CONFIG_LCD, + MX23_PAD_LCD_CS__LCD_CS | MUX_CONFIG_LCD, + MX23_PAD_LCD_ENABLE__LCD_ENABLE | MUX_CONFIG_LCD, + MX23_PAD_LCD_VSYNC__LCD_VSYNC | MUX_CONFIG_LCD, +}; + +static int mxsfb_read_register(uint32_t reg, uint32_t *value) +{ + iomux_cfg_t mux; + uint32_t val = 0; + int i; + + /* Mangle the register offset. */ + reg = ((reg & 0xff) << 1) | (((reg >> 8) & 0xff) << 10); + + /* + * The SmartLCD interface on MX233 can only do WRITE operation + * via the LCDIF controller. Implement the READ operation by + * fiddling with bits. + */ + mxs_iomux_setup_multiple_pads(iomux_lcd_gpio, + ARRAY_SIZE(iomux_lcd_gpio)); + + gpio_direction_output(MX23_PAD_LCD_RS__GPIO_1_19, 1); + gpio_direction_output(MX23_PAD_LCD_CS__GPIO_1_21, 1); + gpio_direction_output(MX23_PAD_LCD_WR__GPIO_1_20, 1); + gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 1); + + for (i = 0; i < 18; i++) { + mux = MXS_IOMUX_PAD_NAKED(1, i, PAD_MUXSEL_GPIO); + gpio_direction_output(mux, 0); + } + + udelay(2); + gpio_direction_output(MX23_PAD_LCD_RS__GPIO_1_19, 0); + udelay(1); + gpio_direction_output(MX23_PAD_LCD_CS__GPIO_1_21, 0); + udelay(1); + gpio_direction_output(MX23_PAD_LCD_WR__GPIO_1_20, 0); + udelay(1); + + for (i = 0; i < 18; i++) { + mux = MXS_IOMUX_PAD_NAKED(1, i, PAD_MUXSEL_GPIO); + gpio_direction_output(mux, (reg >> i) & 1); + } + udelay(1); + + gpio_direction_output(MX23_PAD_LCD_WR__GPIO_1_20, 1); + udelay(3); + + for (i = 0; i < 18; i++) { + mux = MXS_IOMUX_PAD_NAKED(1, i, PAD_MUXSEL_GPIO); + gpio_direction_input(mux); + } + udelay(2); + + gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 0); + udelay(1); + gpio_direction_output(MX23_PAD_LCD_RS__GPIO_1_19, 1); + udelay(1); + gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 1); + udelay(3); + gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 0); + udelay(2); + + for (i = 0; i < 18; i++) { + mux = MXS_IOMUX_PAD_NAKED(1, i, PAD_MUXSEL_GPIO); + val |= !!gpio_get_value(mux) << i; + } + udelay(1); + + gpio_direction_output(MX23_PAD_LCD_ENABLE__GPIO_1_23, 1); + udelay(1); + gpio_direction_output(MX23_PAD_LCD_CS__GPIO_1_21, 1); + udelay(1); + + mxs_iomux_setup_multiple_pads(iomux_lcd_lcd, + ARRAY_SIZE(iomux_lcd_lcd)); + + /* Demangle the register value. */ + *value = ((val >> 1) & 0xff) | ((val >> 2) & 0xff00); + + writel(val, 0x2000); + return 0; +} + +static int mxsfb_write_byte(uint32_t payload, const unsigned int data) +{ + struct mxs_lcdif_regs *regs = (struct mxs_lcdif_regs *)MXS_LCDIF_BASE; + const unsigned int timeout = 0x10000; + + /* What is going on here I do not know. FIXME */ + payload = ((payload & 0xff) << 1) | (((payload >> 8) & 0xff) << 10); + + if (mxs_wait_mask_clr(®s->hw_lcdif_ctrl_reg, LCDIF_CTRL_RUN, + timeout)) + return -ETIMEDOUT; + + writel((1 << LCDIF_TRANSFER_COUNT_V_COUNT_OFFSET) | + (1 << LCDIF_TRANSFER_COUNT_H_COUNT_OFFSET), + ®s->hw_lcdif_transfer_count); + + writel(LCDIF_CTRL_DATA_SELECT | LCDIF_CTRL_RUN, + ®s->hw_lcdif_ctrl_clr); + + if (data) + writel(LCDIF_CTRL_DATA_SELECT, ®s->hw_lcdif_ctrl_set); + + writel(LCDIF_CTRL_RUN, ®s->hw_lcdif_ctrl_set); + + if (mxs_wait_mask_clr(®s->hw_lcdif_lcdif_stat_reg, 1 << 29, + timeout)) + return -ETIMEDOUT; + + writel(payload, ®s->hw_lcdif_data); + return mxs_wait_mask_clr(®s->hw_lcdif_ctrl_reg, LCDIF_CTRL_RUN, + timeout); +} + +static void mxsfb_write_register(uint32_t reg, uint32_t data) +{ + mxsfb_write_byte(reg, 0); + mxsfb_write_byte(data, 1); +} + +static const struct { + uint8_t reg; + uint8_t delay; + uint16_t val; +} lcd_regs[] = { + { 0xe5, 0 , 0x78f0 }, + { 0xe3, 0 , 0x3008 }, + { 0xe7, 0 , 0x0012 }, + { 0xef, 0 , 0x1231 }, + { 0x00, 0 , 0x0001 }, + { 0x01, 0 , 0x0100 }, + { 0x02, 0 , 0x0700 }, + { 0x03, 0 , 0x1030 }, + { 0x04, 0 , 0x0000 }, + { 0x08, 0 , 0x0207 }, + { 0x09, 0 , 0x0000 }, + { 0x0a, 0 , 0x0000 }, + { 0x0c, 0 , 0x0000 }, + { 0x0d, 0 , 0x0000 }, + { 0x0f, 0 , 0x0000 }, + { 0x10, 0 , 0x0000 }, + { 0x11, 0 , 0x0007 }, + { 0x12, 0 , 0x0000 }, + { 0x13, 20 , 0x0000 }, + /* Wait 20 mS here. */ + { 0x10, 0 , 0x1290 }, + { 0x11, 50 , 0x0007 }, + /* Wait 50 mS here. */ + { 0x12, 50 , 0x0019 }, + /* Wait 50 mS here. */ + { 0x13, 0 , 0x1700 }, + { 0x29, 50 , 0x0014 }, + /* Wait 50 mS here. */ + { 0x20, 0 , 0x0000 }, + { 0x21, 0 , 0x0000 }, + { 0x30, 0 , 0x0504 }, + { 0x31, 0 , 0x0007 }, + { 0x32, 0 , 0x0006 }, + { 0x35, 0 , 0x0106 }, + { 0x36, 0 , 0x0202 }, + { 0x37, 0 , 0x0504 }, + { 0x38, 0 , 0x0500 }, + { 0x39, 0 , 0x0706 }, + { 0x3c, 0 , 0x0204 }, + { 0x3d, 0 , 0x0202 }, + { 0x50, 0 , 0x0000 }, + { 0x51, 0 , 0x00ef }, + { 0x52, 0 , 0x0000 }, + { 0x53, 0 , 0x013f }, + { 0x60, 0 , 0xa700 }, + { 0x61, 0 , 0x0001 }, + { 0x6a, 0 , 0x0000 }, + { 0x2b, 50 , 0x000d }, + /* Wait 50 mS here. */ + { 0x90, 0 , 0x0011 }, + { 0x92, 0 , 0x0600 }, + { 0x93, 0 , 0x0003 }, + { 0x95, 0 , 0x0110 }, + { 0x97, 0 , 0x0000 }, + { 0x98, 0 , 0x0000 }, + { 0x07, 0 , 0x0173 }, +}; + +void board_mxsfb_system_setup(void) +{ + struct mxs_lcdif_regs *regs = (struct mxs_lcdif_regs *)MXS_LCDIF_BASE; + uint32_t id; + int i; + + /* Switch the LCDIF into System-Mode */ + writel(LCDIF_CTRL_LCDIF_MASTER | LCDIF_CTRL_DOTCLK_MODE | + LCDIF_CTRL_BYPASS_COUNT, ®s->hw_lcdif_ctrl_clr); + + /* To program the LCD, switch to 18bit bus + 18bit data. */ + clrsetbits_le32(®s->hw_lcdif_ctrl, + LCDIF_CTRL_WORD_LENGTH_MASK | LCDIF_CTRL_LCD_DATABUS_WIDTH_MASK, + LCDIF_CTRL_WORD_LENGTH_18BIT | + LCDIF_CTRL_LCD_DATABUS_WIDTH_18BIT); + + mxsfb_read_register(0, &id); + writel(id, 0x2004); + + /* Restart the SmartLCD controller */ + mdelay(50); + writel(1, ®s->hw_lcdif_ctrl1_set); + mdelay(50); + writel(1, ®s->hw_lcdif_ctrl1_clr); + mdelay(50); + writel(1, ®s->hw_lcdif_ctrl1_set); + mdelay(50); + + /* Program the SmartLCD controller */ + writel(LCDIF_CTRL1_RECOVER_ON_UNDERFLOW, ®s->hw_lcdif_ctrl1_set); + + writel((0x02 << LCDIF_TIMING_CMD_HOLD_OFFSET) | + (0x02 << LCDIF_TIMING_CMD_SETUP_OFFSET) | + (0x02 << LCDIF_TIMING_DATA_HOLD_OFFSET) | + (0x01 << LCDIF_TIMING_DATA_SETUP_OFFSET), + ®s->hw_lcdif_timing); + + /* + * ILI9325 init and configuration sequence. + */ + for (i = 0; i < ARRAY_SIZE(lcd_regs); i++) { + mxsfb_write_register(lcd_regs[i].reg, lcd_regs[i].val); + if (lcd_regs[i].delay) + mdelay(lcd_regs[i].delay); + } + /* Turn on Framebuffer Upload Mode */ + mxsfb_write_byte(0x22, 0); + + writel(LCDIF_CTRL_LCDIF_MASTER | LCDIF_CTRL_DATA_SELECT, + ®s->hw_lcdif_ctrl_set); + + /* Operate the framebuffer in 16bit mode. */ + clrsetbits_le32(®s->hw_lcdif_ctrl, + LCDIF_CTRL_WORD_LENGTH_MASK | LCDIF_CTRL_LCD_DATABUS_WIDTH_MASK, + LCDIF_CTRL_WORD_LENGTH_16BIT | + LCDIF_CTRL_LCD_DATABUS_WIDTH_18BIT); +} +#endif + +int board_init(void) +{ + /* Adress of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; + + /* Turn on PWM backlight */ + gpio_direction_output(MX23_PAD_PWM2__GPIO_1_28, 1); + + return 0; +} + +int board_eth_init(bd_t *bis) +{ + usb_eth_initialize(bis); + return 0; +} |