mx25pdk.c 4.9 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2011 Freescale Semiconductor, Inc.
  4. *
  5. * Author: Fabio Estevam <fabio.estevam@freescale.com>
  6. */
  7. #include <common.h>
  8. #include <init.h>
  9. #include <asm/io.h>
  10. #include <asm/gpio.h>
  11. #include <asm/arch/imx-regs.h>
  12. #include <asm/arch/iomux-mx25.h>
  13. #include <asm/arch/clock.h>
  14. #include <mmc.h>
  15. #include <fsl_esdhc_imx.h>
  16. #include <i2c.h>
  17. #include <power/pmic.h>
  18. #include <fsl_pmic.h>
  19. #include <mc34704.h>
  20. #define FEC_RESET_B IMX_GPIO_NR(4, 8)
  21. #define FEC_ENABLE_B IMX_GPIO_NR(2, 3)
  22. #define CARD_DETECT IMX_GPIO_NR(2, 1)
  23. DECLARE_GLOBAL_DATA_PTR;
  24. #ifdef CONFIG_FSL_ESDHC_IMX
  25. struct fsl_esdhc_cfg esdhc_cfg[1] = {
  26. {IMX_MMC_SDHC1_BASE},
  27. };
  28. #endif
  29. /*
  30. * FIXME: need to revisit this
  31. * The original code enabled PUE and 100-k pull-down without PKE, so the right
  32. * value here is likely:
  33. * 0 for no pull
  34. * or:
  35. * PAD_CTL_PUS_100K_DOWN for 100-k pull-down
  36. */
  37. #define FEC_OUT_PAD_CTRL 0
  38. #define I2C_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \
  39. PAD_CTL_ODE)
  40. static void mx25pdk_fec_init(void)
  41. {
  42. static const iomux_v3_cfg_t fec_pads[] = {
  43. MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
  44. MX25_PAD_FEC_RX_DV__FEC_RX_DV,
  45. MX25_PAD_FEC_RDATA0__FEC_RDATA0,
  46. NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL),
  47. NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL),
  48. NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL),
  49. MX25_PAD_FEC_MDIO__FEC_MDIO,
  50. MX25_PAD_FEC_RDATA1__FEC_RDATA1,
  51. NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL),
  52. NEW_PAD_CTRL(MX25_PAD_D12__GPIO_4_8, 0), /* FEC_RESET_B */
  53. NEW_PAD_CTRL(MX25_PAD_A17__GPIO_2_3, 0), /* FEC_ENABLE_B */
  54. };
  55. static const iomux_v3_cfg_t i2c_pads[] = {
  56. NEW_PAD_CTRL(MX25_PAD_I2C1_CLK__I2C1_CLK, I2C_PAD_CTRL),
  57. NEW_PAD_CTRL(MX25_PAD_I2C1_DAT__I2C1_DAT, I2C_PAD_CTRL),
  58. };
  59. imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
  60. /* Assert RESET and ENABLE low */
  61. gpio_direction_output(FEC_RESET_B, 0);
  62. gpio_direction_output(FEC_ENABLE_B, 0);
  63. udelay(10);
  64. /* Deassert RESET and ENABLE */
  65. gpio_set_value(FEC_RESET_B, 1);
  66. gpio_set_value(FEC_ENABLE_B, 1);
  67. /* Setup I2C pins so that PMIC can turn on PHY supply */
  68. imx_iomux_v3_setup_multiple_pads(i2c_pads, ARRAY_SIZE(i2c_pads));
  69. }
  70. int dram_init(void)
  71. {
  72. /* dram_init must store complete ramsize in gd->ram_size */
  73. gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
  74. PHYS_SDRAM_1_SIZE);
  75. return 0;
  76. }
  77. /*
  78. * Set up input pins with hysteresis and 100-k pull-ups
  79. */
  80. #define UART1_IN_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP)
  81. /*
  82. * FIXME: need to revisit this
  83. * The original code enabled PUE and 100-k pull-down without PKE, so the right
  84. * value here is likely:
  85. * 0 for no pull
  86. * or:
  87. * PAD_CTL_PUS_100K_DOWN for 100-k pull-down
  88. */
  89. #define UART1_OUT_PAD_CTRL 0
  90. static void mx25pdk_uart1_init(void)
  91. {
  92. static const iomux_v3_cfg_t uart1_pads[] = {
  93. NEW_PAD_CTRL(MX25_PAD_UART1_RXD__UART1_RXD, UART1_IN_PAD_CTRL),
  94. NEW_PAD_CTRL(MX25_PAD_UART1_TXD__UART1_TXD, UART1_OUT_PAD_CTRL),
  95. NEW_PAD_CTRL(MX25_PAD_UART1_RTS__UART1_RTS, UART1_OUT_PAD_CTRL),
  96. NEW_PAD_CTRL(MX25_PAD_UART1_CTS__UART1_CTS, UART1_IN_PAD_CTRL),
  97. };
  98. imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
  99. }
  100. int board_early_init_f(void)
  101. {
  102. mx25pdk_uart1_init();
  103. return 0;
  104. }
  105. int board_init(void)
  106. {
  107. /* address of boot parameters */
  108. gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
  109. return 0;
  110. }
  111. int board_late_init(void)
  112. {
  113. struct pmic *p;
  114. int ret;
  115. mx25pdk_fec_init();
  116. ret = pmic_init(I2C_0);
  117. if (ret)
  118. return ret;
  119. p = pmic_get("FSL_PMIC");
  120. if (!p)
  121. return -ENODEV;
  122. /* Turn on Ethernet PHY and LCD supplies */
  123. pmic_reg_write(p, MC34704_GENERAL2_REG, ONOFFE | ONOFFA);
  124. return 0;
  125. }
  126. #ifdef CONFIG_FSL_ESDHC_IMX
  127. int board_mmc_getcd(struct mmc *mmc)
  128. {
  129. /* Set up the Card Detect pin. */
  130. imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX25_PAD_A15__GPIO_2_1, 0));
  131. gpio_direction_input(CARD_DETECT);
  132. return !gpio_get_value(CARD_DETECT);
  133. }
  134. int board_mmc_init(bd_t *bis)
  135. {
  136. static const iomux_v3_cfg_t sdhc1_pads[] = {
  137. NEW_PAD_CTRL(MX25_PAD_SD1_CMD__SD1_CMD, NO_PAD_CTRL),
  138. NEW_PAD_CTRL(MX25_PAD_SD1_CLK__SD1_CLK, NO_PAD_CTRL),
  139. NEW_PAD_CTRL(MX25_PAD_SD1_DATA0__SD1_DATA0, NO_PAD_CTRL),
  140. NEW_PAD_CTRL(MX25_PAD_SD1_DATA1__SD1_DATA1, NO_PAD_CTRL),
  141. NEW_PAD_CTRL(MX25_PAD_SD1_DATA2__SD1_DATA2, NO_PAD_CTRL),
  142. NEW_PAD_CTRL(MX25_PAD_SD1_DATA3__SD1_DATA3, NO_PAD_CTRL),
  143. };
  144. imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads));
  145. /*
  146. * Set the eSDHC1 PER clock to the maximum frequency lower than or equal
  147. * to 50 MHz that can be obtained, which requires to use UPLL as the
  148. * clock source. This actually gives 48 MHz.
  149. */
  150. imx_set_perclk(MXC_ESDHC1_CLK, true, 50000000);
  151. esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC1_CLK);
  152. return fsl_esdhc_initialize(bis, &esdhc_cfg[0]);
  153. }
  154. #endif
  155. int checkboard(void)
  156. {
  157. puts("Board: MX25PDK\n");
  158. return 0;
  159. }
  160. /* Lowlevel init isn't used on mx25pdk, so just provide a dummy one here */
  161. void lowlevel_init(void) {}