src/mainboard/google/gale/blsp.c

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2
   3 #include <gpio.h>
   4 #include <soc/blsp.h>
   5 #include <soc/qup.h>
   6
   7 #define IPQ40XX_I2C0_PINGROUP_1         1
   8 #define IPQ40XX_I2C0_PINGROUP_2         (!IPQ40XX_I2C0_PINGROUP_1)
   9 #define IPQ40XX_I2C1_PINGROUP_1         1
  10
  11 #if IPQ40XX_I2C0_PINGROUP_1
  12
  13 #define SCL_GPIO                20
  14 #define SDA_GPIO                21
  15 #define GPIO_FUNC_SCL           0x1
  16 #define GPIO_FUNC_SDA           0x1
  17
  18 #elif IPQ40XX_I2C0_PINGROUP_2
  19
  20 #define SCL_GPIO                58
  21 #define SDA_GPIO                59
  22 #define GPIO_FUNC_SCL           0x3
  23 #define GPIO_FUNC_SDA           0x2
  24
  25 #else
  26
  27 #warning "TPM: I2C pingroup not specified"
  28
  29 #endif
  30
  31 #if IPQ40XX_I2C1_PINGROUP_1
  32
  33 #define SCL_GPIO_I2C1                34
  34 #define SDA_GPIO_I2C1                35
  35 #define GPIO_I2C1_FUNC_SCL           0x1
  36 #define GPIO_I2C1_FUNC_SDA           0x1
  37
  38 #endif
  39
  40 int blsp_i2c_init_board(blsp_qup_id_t id)
  41 {
  42         switch (id) {
  43         case BLSP_QUP_ID_0:
  44         case BLSP_QUP_ID_1:
  45         case BLSP_QUP_ID_2:
  46         case BLSP_QUP_ID_3:
  47 #if defined(IPQ40XX_I2C0_PINGROUP_1) || defined(IPQ40XX_I2C0_PINGROUP_2)
  48                 gpio_tlmm_config_set(SDA_GPIO, GPIO_FUNC_SDA,
  49                                      GPIO_NO_PULL, GPIO_2MA, 1);
  50                 gpio_tlmm_config_set(SCL_GPIO, GPIO_FUNC_SCL,
  51                                      GPIO_NO_PULL, GPIO_2MA, 1);
  52 #endif /* Pin Group 1 or 2 */
  53
  54 #if defined(IPQ40XX_I2C1_PINGROUP_1)
  55                 gpio_tlmm_config_set(SDA_GPIO_I2C1, GPIO_I2C1_FUNC_SDA,
  56                                      GPIO_NO_PULL, GPIO_2MA, 1);
  57                 gpio_tlmm_config_set(SCL_GPIO_I2C1, GPIO_I2C1_FUNC_SCL,
  58                                      GPIO_NO_PULL, GPIO_2MA, 1);
  59 #endif
  60                 break;
  61         default:
  62                 return 1;
  63         }
  64
  65         return 0;
  66 }