diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/freescale/mx7dsabresd/mx7dsabresd.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/board/freescale/mx7dsabresd/mx7dsabresd.c b/board/freescale/mx7dsabresd/mx7dsabresd.c index a95682a..2300e43 100644 --- a/board/freescale/mx7dsabresd/mx7dsabresd.c +++ b/board/freescale/mx7dsabresd/mx7dsabresd.c @@ -22,6 +22,10 @@ #include <power/pfuze3000_pmic.h> #include "../common/pfuze.h" #include <asm/arch/crm_regs.h> +#if defined(CONFIG_MXC_EPDC) +#include <lcd.h> +#include <mxc_epdc_fb.h> +#endif DECLARE_GLOBAL_DATA_PTR; @@ -43,6 +47,8 @@ DECLARE_GLOBAL_DATA_PTR; #define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_PUS_PU5KOHM) +#define EPDC_PAD_CTRL 0x0 + int dram_init(void) { gd->ram_size = PHYS_SDRAM_SIZE; @@ -306,6 +312,221 @@ int board_qspi_init(void) } #endif +#ifdef CONFIG_MXC_EPDC +iomux_v3_cfg_t const epdc_en_pads[] = { + MX7D_PAD_GPIO1_IO04__GPIO1_IO4 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static iomux_v3_cfg_t const epdc_enable_pads[] = { + MX7D_PAD_EPDC_DATA00__EPDC_DATA0 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_DATA01__EPDC_DATA1 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_DATA02__EPDC_DATA2 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_DATA03__EPDC_DATA3 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_DATA04__EPDC_DATA4 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_DATA05__EPDC_DATA5 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_DATA06__EPDC_DATA6 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_DATA07__EPDC_DATA7 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_SDCLK__EPDC_SDCLK | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_SDLE__EPDC_SDLE | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_SDOE__EPDC_SDOE | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_SDSHR__EPDC_SDSHR | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_SDCE0__EPDC_SDCE0 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_SDCE1__EPDC_SDCE1 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_GDCLK__EPDC_GDCLK | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_GDOE__EPDC_GDOE | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_GDRL__EPDC_GDRL | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_GDSP__EPDC_GDSP | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_BDR0__EPDC_BDR0 | MUX_PAD_CTRL(EPDC_PAD_CTRL), + MX7D_PAD_EPDC_BDR1__EPDC_BDR1 | MUX_PAD_CTRL(EPDC_PAD_CTRL), +}; + +static iomux_v3_cfg_t const epdc_disable_pads[] = { + MX7D_PAD_EPDC_DATA00__GPIO2_IO0, + MX7D_PAD_EPDC_DATA01__GPIO2_IO1, + MX7D_PAD_EPDC_DATA02__GPIO2_IO2, + MX7D_PAD_EPDC_DATA03__GPIO2_IO3, + MX7D_PAD_EPDC_DATA04__GPIO2_IO4, + MX7D_PAD_EPDC_DATA05__GPIO2_IO5, + MX7D_PAD_EPDC_DATA06__GPIO2_IO6, + MX7D_PAD_EPDC_DATA07__GPIO2_IO7, + MX7D_PAD_EPDC_SDCLK__GPIO2_IO16, + MX7D_PAD_EPDC_SDLE__GPIO2_IO17, + MX7D_PAD_EPDC_SDOE__GPIO2_IO18, + MX7D_PAD_EPDC_SDSHR__GPIO2_IO19, + MX7D_PAD_EPDC_SDCE0__GPIO2_IO20, + MX7D_PAD_EPDC_SDCE1__GPIO2_IO21, + MX7D_PAD_EPDC_GDCLK__GPIO2_IO24, + MX7D_PAD_EPDC_GDOE__GPIO2_IO25, + MX7D_PAD_EPDC_GDRL__GPIO2_IO26, + MX7D_PAD_EPDC_GDSP__GPIO2_IO27, + MX7D_PAD_EPDC_BDR0__GPIO2_IO28, + MX7D_PAD_EPDC_BDR1__GPIO2_IO29, +}; + +vidinfo_t panel_info = { + .vl_refresh = 85, + .vl_col = 1024, + .vl_row = 758, + .vl_pixclock = 40000000, + .vl_left_margin = 12, + .vl_right_margin = 76, + .vl_upper_margin = 4, + .vl_lower_margin = 5, + .vl_hsync = 12, + .vl_vsync = 2, + .vl_sync = 0, + .vl_mode = 0, + .vl_flag = 0, + .vl_bpix = 3, + .cmap = 0, +}; + +struct epdc_timing_params panel_timings = { + .vscan_holdoff = 4, + .sdoed_width = 10, + .sdoed_delay = 20, + .sdoez_width = 10, + .sdoez_delay = 20, + .gdclk_hp_offs = 524, + .gdsp_offs = 327, + .gdoe_offs = 0, + .gdclk_offs = 19, + .num_ce = 1, +}; + +static void setup_epdc_power(void) +{ + /* IOMUX_GPR1: bit30: Disable On-chip RAM EPDC Function */ + struct iomuxc_gpr_base_regs *const iomuxc_gpr_regs + = (struct iomuxc_gpr_base_regs *) IOMUXC_GPR_BASE_ADDR; + + clrsetbits_le32(&iomuxc_gpr_regs->gpr[1], + IOMUXC_GPR_GPR1_GPR_ENABLE_OCRAM_EPDC_MASK, 0); + + /* Setup epdc voltage */ + + /* EPDC_PWRSTAT - GPIO2[31] for PWR_GOOD status */ + imx_iomux_v3_setup_pad(MX7D_PAD_EPDC_PWR_STAT__GPIO2_IO31 | + MUX_PAD_CTRL(EPDC_PAD_CTRL)); + gpio_request(IMX_GPIO_NR(2, 31), "epdc_pwrstat"); + gpio_direction_input(IMX_GPIO_NR(2, 31)); + + /* EPDC_VCOM0 - GPIO4[14] for VCOM control */ + imx_iomux_v3_setup_pad(MX7D_PAD_I2C4_SCL__GPIO4_IO14 | + MUX_PAD_CTRL(EPDC_PAD_CTRL)); + + /* Set as output */ + gpio_request(IMX_GPIO_NR(4, 14), "epdc_vcom"); + gpio_direction_output(IMX_GPIO_NR(4, 14), 1); + + /* EPDC_PWRWAKEUP - GPIO2[23] for EPD PMIC WAKEUP */ + imx_iomux_v3_setup_pad(MX7D_PAD_EPDC_SDCE3__GPIO2_IO23 | + MUX_PAD_CTRL(EPDC_PAD_CTRL)); + /* Set as output */ + gpio_request(IMX_GPIO_NR(2, 23), "epdc_pmic"); + gpio_direction_output(IMX_GPIO_NR(2, 23), 1); + + /* EPDC_PWRCTRL0 - GPIO2[30] for EPD PWR CTL0 */ + imx_iomux_v3_setup_pad(MX7D_PAD_EPDC_PWR_COM__GPIO2_IO30 | + MUX_PAD_CTRL(EPDC_PAD_CTRL)); + /* Set as output */ + gpio_request(IMX_GPIO_NR(2, 30), "epdc_pwr_ctl0"); + gpio_direction_output(IMX_GPIO_NR(2, 30), 1); +} + +static void epdc_enable_pins(void) +{ + /* epdc iomux settings */ + imx_iomux_v3_setup_multiple_pads(epdc_enable_pads, + ARRAY_SIZE(epdc_enable_pads)); +} + +static void epdc_disable_pins(void) +{ + /* Configure MUX settings for EPDC pins to GPIO and drive to 0 */ + imx_iomux_v3_setup_multiple_pads(epdc_disable_pads, + ARRAY_SIZE(epdc_disable_pads)); +} + +static void setup_epdc(void) +{ + /*** epdc Maxim PMIC settings ***/ + + /* EPDC_PWRSTAT - GPIO2[31] for PWR_GOOD status */ + imx_iomux_v3_setup_pad(MX7D_PAD_EPDC_PWR_STAT__GPIO2_IO31 | + MUX_PAD_CTRL(EPDC_PAD_CTRL)); + + /* EPDC_VCOM0 - GPIO4[14] for VCOM control */ + imx_iomux_v3_setup_pad(MX7D_PAD_I2C4_SCL__GPIO4_IO14 | + MUX_PAD_CTRL(EPDC_PAD_CTRL)); + + /* EPDC_PWRWAKEUP - GPIO4[23] for EPD PMIC WAKEUP */ + imx_iomux_v3_setup_pad(MX7D_PAD_EPDC_SDCE3__GPIO2_IO23 | + MUX_PAD_CTRL(EPDC_PAD_CTRL)); + + /* EPDC_PWRCTRL0 - GPIO4[20] for EPD PWR CTL0 */ + imx_iomux_v3_setup_pad(MX7D_PAD_EPDC_PWR_COM__GPIO2_IO30 | + MUX_PAD_CTRL(EPDC_PAD_CTRL)); + + /* Set pixel clock rates for EPDC in clock.c */ + + panel_info.epdc_data.wv_modes.mode_init = 0; + panel_info.epdc_data.wv_modes.mode_du = 1; + panel_info.epdc_data.wv_modes.mode_gc4 = 3; + panel_info.epdc_data.wv_modes.mode_gc8 = 2; + panel_info.epdc_data.wv_modes.mode_gc16 = 2; + panel_info.epdc_data.wv_modes.mode_gc32 = 2; + + panel_info.epdc_data.epdc_timings = panel_timings; + + setup_epdc_power(); +} + +void epdc_power_on(void) +{ + unsigned int reg; + struct gpio_regs *gpio_regs = (struct gpio_regs *)GPIO2_BASE_ADDR; + + /* Set EPD_PWR_CTL0 to high - enable EINK_VDD (3.15) */ + gpio_set_value(IMX_GPIO_NR(2, 30), 1); + udelay(1000); + + /* Enable epdc signal pin */ + epdc_enable_pins(); + + /* Set PMIC Wakeup to high - enable Display power */ + gpio_set_value(IMX_GPIO_NR(2, 23), 1); + + /* Wait for PWRGOOD == 1 */ + while (1) { + reg = readl(&gpio_regs->gpio_psr); + if (!(reg & (1 << 31))) + break; + + udelay(100); + } + + /* Enable VCOM */ + gpio_set_value(IMX_GPIO_NR(4, 14), 1); + + udelay(500); +} + +void epdc_power_off(void) +{ + /* Set PMIC Wakeup to low - disable Display power */ + gpio_set_value(IMX_GPIO_NR(2, 23), 0); + + /* Disable VCOM */ + gpio_set_value(IMX_GPIO_NR(4, 14), 0); + + epdc_disable_pins(); + + /* Set EPD_PWR_CTL0 to low - disable EINK_VDD (3.15) */ + gpio_set_value(IMX_GPIO_NR(2, 30), 0); +} +#endif + int board_early_init_f(void) { setup_iomux_uart(); @@ -334,6 +555,20 @@ int board_init(void) board_qspi_init(); #endif +#ifdef CONFIG_MXC_EPDC + if (mx7sabre_rev() >= BOARD_REV_B) { + /* + * On RevB, GPIO1_IO04 is used for ENET2 EN, + * so set its output to high to isolate the + * ENET2 signals for EPDC + */ + imx_iomux_v3_setup_multiple_pads(epdc_en_pads, + ARRAY_SIZE(epdc_en_pads)); + gpio_direction_output(IMX_GPIO_NR(1, 4), 1); + } + setup_epdc(); +#endif + #ifdef CONFIG_MXC_SPI setup_spi(); #endif |