board/technexion/pico-imx6/pico-imx6.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2013 Freescale Semiconductor, Inc.
   4  * Copyright (C) 2014 O.S. Systems Software LTDA.
   5  *
   6  * Author: Fabio Estevam <festevam@gmail.com>
   7  */
   8
   9 #include <env.h>
  10 #include <init.h>
  11 #include <net.h>
  12 #include <asm/arch/clock.h>
  13 #include <asm/arch/crm_regs.h>
  14 #include <asm/arch/iomux.h>
  15 #include <asm/arch/imx-regs.h>
  16 #include <asm/arch/mx6-pins.h>
  17 #include <asm/arch/sys_proto.h>
  18 #include <asm/gpio.h>
  19 #include <asm/arch/mxc_hdmi.h>
  20 #include <asm/mach-imx/video.h>
  21 #include <asm/mach-imx/iomux-v3.h>
  22 #include <asm/io.h>
  23 #include <linux/sizes.h>
  24 #include <common.h>
  25 #include <miiphy.h>
  26 #include <netdev.h>
  27 #include <phy.h>
  28
  29 DECLARE_GLOBAL_DATA_PTR;
  30
  31 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  32         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  33         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  34
  35 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  36         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
  37
  38 #define ETH_PHY_RESET           IMX_GPIO_NR(1, 26)
  39 #define LVDS0_EN                IMX_GPIO_NR(2, 8)
  40 #define LVDS0_BL_EN             IMX_GPIO_NR(2, 9)
  41
  42 int dram_init(void)
  43 {
  44         gd->ram_size = imx_ddr_size();
  45
  46         return 0;
  47 }
  48
  49 static iomux_v3_cfg_t const uart1_pads[] = {
  50         IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
  51         IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
  52 };
  53
  54 static void setup_iomux_uart(void)
  55 {
  56         SETUP_IOMUX_PADS(uart1_pads);
  57 }
  58
  59 static iomux_v3_cfg_t const lvds_pads[] = {
  60         /* lvds */
  61         IOMUX_PADS(PAD_SD4_DAT0__GPIO2_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL)),
  62         IOMUX_PADS(PAD_SD4_DAT1__GPIO2_IO09 | MUX_PAD_CTRL(NO_PAD_CTRL)),
  63         IOMUX_PADS(PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK | MUX_PAD_CTRL(NO_PAD_CTRL)),
  64         IOMUX_PADS(PAD_DI0_PIN2__IPU1_DI0_PIN02 | MUX_PAD_CTRL(NO_PAD_CTRL)),
  65         IOMUX_PADS(PAD_DI0_PIN3__IPU1_DI0_PIN03 | MUX_PAD_CTRL(NO_PAD_CTRL)),
  66 };
  67
  68 static iomux_v3_cfg_t const enet_pads[] = {
  69         IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  70         IOMUX_PADS(PAD_ENET_MDC__ENET_MDC    | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  71         IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  72         IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  73         IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  74         IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  75         IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  76         IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL |
  77                    MUX_PAD_CTRL(ENET_PAD_CTRL)),
  78         IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK |
  79                    MUX_PAD_CTRL(ENET_PAD_CTRL)),
  80         IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  81         IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  82         IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  83         IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  84         IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  85         IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  86         /* AR8035 PHY Reset */
  87         IOMUX_PADS(PAD_ENET_RXD1__GPIO1_IO26 | MUX_PAD_CTRL(NO_PAD_CTRL)),
  88 };
  89
  90 static void setup_iomux_enet(void)
  91 {
  92         SETUP_IOMUX_PADS(enet_pads);
  93
  94         /* Reset AR8031 PHY */
  95         gpio_request(ETH_PHY_RESET, "enet_phy_reset");
  96         gpio_direction_output(ETH_PHY_RESET, 0);
  97         udelay(500);
  98         gpio_set_value(ETH_PHY_RESET, 1);
  99 }
 100
 101 #if defined(CONFIG_VIDEO_IPUV3)
 102 static iomux_v3_cfg_t const ft5x06_wvga_pads[] = {
 103         IOMUX_PADS(PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK),
 104         IOMUX_PADS(PAD_DI0_PIN2__IPU1_DI0_PIN02), /* HSync */
 105         IOMUX_PADS(PAD_DI0_PIN3__IPU1_DI0_PIN03), /* VSync */
 106         IOMUX_PADS(PAD_DI0_PIN4__IPU1_DI0_PIN04 | MUX_PAD_CTRL(PAD_CTL_DSE_120ohm)), /* Contrast */
 107         IOMUX_PADS(PAD_DI0_PIN15__IPU1_DI0_PIN15), /* DISP0_DRDY */
 108         IOMUX_PADS(PAD_DISP0_DAT0__IPU1_DISP0_DATA00),
 109         IOMUX_PADS(PAD_DISP0_DAT1__IPU1_DISP0_DATA01),
 110         IOMUX_PADS(PAD_DISP0_DAT2__IPU1_DISP0_DATA02),
 111         IOMUX_PADS(PAD_DISP0_DAT3__IPU1_DISP0_DATA03),
 112         IOMUX_PADS(PAD_DISP0_DAT4__IPU1_DISP0_DATA04),
 113         IOMUX_PADS(PAD_DISP0_DAT5__IPU1_DISP0_DATA05),
 114         IOMUX_PADS(PAD_DISP0_DAT6__IPU1_DISP0_DATA06),
 115         IOMUX_PADS(PAD_DISP0_DAT7__IPU1_DISP0_DATA07),
 116         IOMUX_PADS(PAD_DISP0_DAT8__IPU1_DISP0_DATA08),
 117         IOMUX_PADS(PAD_DISP0_DAT9__IPU1_DISP0_DATA09),
 118         IOMUX_PADS(PAD_DISP0_DAT10__IPU1_DISP0_DATA10),
 119         IOMUX_PADS(PAD_DISP0_DAT11__IPU1_DISP0_DATA11),
 120         IOMUX_PADS(PAD_DISP0_DAT12__IPU1_DISP0_DATA12),
 121         IOMUX_PADS(PAD_DISP0_DAT13__IPU1_DISP0_DATA13),
 122         IOMUX_PADS(PAD_DISP0_DAT14__IPU1_DISP0_DATA14),
 123         IOMUX_PADS(PAD_DISP0_DAT15__IPU1_DISP0_DATA15),
 124         IOMUX_PADS(PAD_DISP0_DAT16__IPU1_DISP0_DATA16),
 125         IOMUX_PADS(PAD_DISP0_DAT17__IPU1_DISP0_DATA17),
 126         IOMUX_PADS(PAD_DISP0_DAT18__IPU1_DISP0_DATA18),
 127         IOMUX_PADS(PAD_DISP0_DAT19__IPU1_DISP0_DATA19),
 128         IOMUX_PADS(PAD_DISP0_DAT20__IPU1_DISP0_DATA20),
 129         IOMUX_PADS(PAD_DISP0_DAT21__IPU1_DISP0_DATA21),
 130         IOMUX_PADS(PAD_DISP0_DAT22__IPU1_DISP0_DATA22),
 131         IOMUX_PADS(PAD_DISP0_DAT23__IPU1_DISP0_DATA23),
 132         IOMUX_PADS(PAD_SD4_DAT2__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL)), /* DISP0_BKLEN */
 133         IOMUX_PADS(PAD_SD4_DAT3__GPIO2_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL)), /* DISP0_VDDEN */
 134 };
 135
 136 static void do_enable_hdmi(struct display_info_t const *dev)
 137 {
 138         imx_enable_hdmi_phy();
 139 }
 140
 141 static void enable_lvds(struct display_info_t const *dev)
 142 {
 143         struct iomuxc *iomux = (struct iomuxc *)
 144                                 IOMUXC_BASE_ADDR;
 145
 146         /* set CH0 data width to 24bit (IOMUXC_GPR2:5 0=18bit, 1=24bit) */
 147         u32 reg = readl(&iomux->gpr[2]);
 148         reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
 149         writel(reg, &iomux->gpr[2]);
 150
 151         /* Enable Backlight - use GPIO for Brightness adjustment */
 152         SETUP_IOMUX_PAD(PAD_SD4_DAT1__GPIO2_IO09);
 153         gpio_request(IMX_GPIO_NR(2, 9), "backlight_enable");
 154         gpio_direction_output(IMX_GPIO_NR(2, 9), 1);
 155
 156         gpio_request(IMX_GPIO_NR(2, 8), "brightness");
 157         SETUP_IOMUX_PAD(PAD_SD4_DAT0__GPIO2_IO08);
 158         gpio_direction_output(IMX_GPIO_NR(2, 8), 1);
 159 }
 160
 161 static void enable_ft5x06_wvga(struct display_info_t const *dev)
 162 {
 163         SETUP_IOMUX_PADS(ft5x06_wvga_pads);
 164
 165         gpio_request(IMX_GPIO_NR(2, 10), "parallel_enable");
 166         gpio_request(IMX_GPIO_NR(2, 11), "parallel_brightness");
 167         gpio_direction_output(IMX_GPIO_NR(2, 10), 1);
 168         gpio_direction_output(IMX_GPIO_NR(2, 11), 1);
 169 }
 170
 171 struct display_info_t const displays[] = {{
 172         .bus    = 1,
 173         .addr   = 0x38,
 174         .pixfmt = IPU_PIX_FMT_RGB24,
 175         .detect = NULL,
 176         .enable = enable_ft5x06_wvga,
 177         .mode   = {
 178                 .name           = "FT5x06-WVGA",
 179                 .refresh        = 60,
 180                 .xres           = 800,
 181                 .yres           = 480,
 182                 .pixclock       = 30303,
 183                 .left_margin    = 45,
 184                 .right_margin   = 210,
 185                 .upper_margin   = 22,
 186                 .lower_margin   = 22,
 187                 .hsync_len      = 1,
 188                 .vsync_len      = 1,
 189                 .sync           = 0,
 190                 .vmode          = FB_VMODE_NONINTERLACED
 191 } }, {
 192         .bus    = -1,
 193         .addr   = 0,
 194         .pixfmt = IPU_PIX_FMT_RGB24,
 195         .detect = NULL,
 196         .enable = enable_lvds,
 197         .mode   = {
 198                 .name           = "hj070na",
 199                 .refresh        = 60,
 200                 .xres           = 1024,
 201                 .yres           = 600,
 202                 .pixclock       = 15385,
 203                 .left_margin    = 220,
 204                 .right_margin   = 40,
 205                 .upper_margin   = 21,
 206                 .lower_margin   = 7,
 207                 .hsync_len      = 60,
 208                 .vsync_len      = 10,
 209                 .sync           = FB_SYNC_EXT,
 210                 .vmode          = FB_VMODE_NONINTERLACED
 211 } }, {
 212         .bus    = -1,
 213         .addr   = 0,
 214         .pixfmt = IPU_PIX_FMT_RGB24,
 215         .detect = detect_hdmi,
 216         .enable = do_enable_hdmi,
 217         .mode   = {
 218                 .name           = "HDMI",
 219                 .refresh        = 60,
 220                 .xres           = 1024,
 221                 .yres           = 768,
 222                 .pixclock       = 15385,
 223                 .left_margin    = 220,
 224                 .right_margin   = 40,
 225                 .upper_margin   = 21,
 226                 .lower_margin   = 7,
 227                 .hsync_len      = 60,
 228                 .vsync_len      = 10,
 229                 .sync           = FB_SYNC_EXT,
 230                 .vmode          = FB_VMODE_NONINTERLACED
 231 } } };
 232 size_t display_count = ARRAY_SIZE(displays);
 233
 234 static void setup_display(void)
 235 {
 236         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 237         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 238         int reg;
 239
 240         /* Setup HSYNC, VSYNC, DISP_CLK for debugging purposes */
 241         SETUP_IOMUX_PADS(lvds_pads);
 242         gpio_request(LVDS0_EN, "lvds0_enable");
 243         gpio_request(LVDS0_BL_EN, "lvds0_bl_enable");
 244         gpio_direction_output(LVDS0_EN, 1);
 245         gpio_direction_output(LVDS0_BL_EN, 1);
 246
 247         enable_ipu_clock();
 248         imx_setup_hdmi();
 249
 250         reg = __raw_readl(&mxc_ccm->CCGR3);
 251         reg |=  MXC_CCM_CCGR3_LDB_DI0_MASK | MXC_CCM_CCGR3_LDB_DI1_MASK;
 252         writel(reg, &mxc_ccm->CCGR3);
 253
 254         /* set LDB0, LDB1 clk select to 011/011 */
 255         reg = readl(&mxc_ccm->cs2cdr);
 256         reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
 257                 | MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
 258         reg |= (3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
 259                  | (3 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
 260         writel(reg, &mxc_ccm->cs2cdr);
 261
 262         reg = readl(&mxc_ccm->cscmr2);
 263         reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV | MXC_CCM_CSCMR2_LDB_DI1_IPU_DIV;
 264         writel(reg, &mxc_ccm->cscmr2);
 265
 266         reg = readl(&mxc_ccm->chsccdr);
 267         reg |= (CHSCCDR_CLK_SEL_LDB_DI0
 268                 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
 269         reg |= (CHSCCDR_CLK_SEL_LDB_DI0
 270                 << MXC_CCM_CHSCCDR_IPU1_DI1_CLK_SEL_OFFSET);
 271         writel(reg, &mxc_ccm->chsccdr);
 272
 273          reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
 274                 | IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_LOW
 275                 | IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
 276                 | IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
 277                 | IOMUXC_GPR2_DATA_WIDTH_CH1_24BIT
 278                 | IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
 279                 | IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
 280                 | IOMUXC_GPR2_LVDS_CH1_MODE_ENABLED_DI0
 281                 | IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
 282         writel(reg, &iomux->gpr[2]);
 283         reg = readl(&iomux->gpr[3]);
 284
 285         reg = (reg & ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK
 286                 | IOMUXC_GPR3_HDMI_MUX_CTL_MASK))
 287                 | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
 288                 << IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
 289
 290         writel(reg, &iomux->gpr[3]);
 291 }
 292 #endif /* CONFIG_VIDEO_IPUV3 */
 293
 294 int board_early_init_f(void)
 295 {
 296         setup_iomux_uart();
 297
 298 #if defined(CONFIG_VIDEO_IPUV3)
 299         setup_display();
 300 #endif
 301
 302         return 0;
 303 }
 304
 305 int board_eth_init(bd_t *bis)
 306 {
 307         setup_iomux_enet();
 308
 309         return cpu_eth_init(bis);
 310 }
 311
 312 int board_phy_config(struct phy_device *phydev)
 313 {
 314         unsigned short val;
 315
 316         /* To enable AR8035 ouput a 125MHz clk from CLK_25M */
 317         phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
 318         phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
 319         phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);
 320
 321         val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
 322         val &= 0xffe7;
 323         val |= 0x18;
 324         phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val);
 325
 326         /* introduce tx clock delay */
 327         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5);
 328         val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
 329         val |= 0x0100;
 330         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val);
 331
 332         if (phydev->drv->config)
 333                 phydev->drv->config(phydev);
 334
 335         return 0;
 336 }
 337
 338 int overwrite_console(void)
 339 {
 340         return 1;
 341 }
 342
 343 int board_late_init(void)
 344 {
 345         if (is_mx6dq())
 346                 env_set("board_rev", "MX6Q");
 347         else
 348                 env_set("board_rev", "MX6DL");
 349
 350         return 0;
 351 }
 352
 353 int board_init(void)
 354 {
 355         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 356
 357         return 0;
 358 }
 359
 360 int checkboard(void)
 361 {
 362         puts("Board: PICO-IMX6\n");
 363
 364         return 0;
 365 }