src/mainboard/google/zork/variants/dalboz/variant.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <baseboard/variants.h>
   4 #include <device/device.h>
   5 #include <ec/google/chromeec/ec.h>
   6 #include <ec/google/chromeec/i2c_tunnel/chip.h>
   7 #include <static.h>
   8
   9 #define DALBOZ_DB_HDMI 0x1
  10
  11 /*
  12  * This is to allow support for audio on older board versions (< 2). [b/153458561]. This
  13  * should be removed once these boards are phased out.
  14  */
  15 static void update_audio_configuration(void)
  16 {
  17         uint32_t board_version;
  18         const struct device *i2c_tunnel_dev = DEV_PTR(audio_rt5682);
  19         struct ec_google_chromeec_i2c_tunnel_config *cfg;
  20
  21         /* If CBI board version cannot be read, assume this is an older revision of hardware. */
  22         if (google_chromeec_cbi_get_board_version(&board_version) != 0)
  23                 board_version = 1;
  24
  25         if (board_version >= 2)
  26                 return;
  27
  28         cfg = config_of(i2c_tunnel_dev);
  29         cfg->remote_bus = 5;
  30 }
  31
  32 void variant_devtree_update(void)
  33 {
  34         uint32_t board_version;
  35         struct soc_amd_picasso_config *cfg;
  36
  37         cfg = config_of_soc();
  38
  39         /*
  40          * If CBI board version cannot be read, assume this is an older revision
  41          * of hardware.
  42          */
  43         if (google_chromeec_cbi_get_board_version(&board_version) != 0)
  44                 board_version = 1;
  45
  46         if (variant_has_emmc() || boot_is_factory_unprovisioned()) {
  47                 if (board_version <= 2) {
  48                         /*
  49                          * rev0 and rev1 boards have issues with HS400
  50                          *
  51                          * There is a tuning fix with ES which shows promise
  52                          * for some boards, and a HW fix with stitching vias.
  53                          * There were also concerns that these boards did not
  54                          * have good margins for certain skus.
  55                          *
  56                          * But these original boards have none of these fixes.
  57                          * So we keep the speed low here, with the intent that
  58                          * other variants implement these corrections.
  59                          */
  60                         cfg->emmc_config.timing = SD_EMMC_EMMC_HS200;
  61                 }
  62         } else {
  63                 DEV_PTR(emmc)->enabled = 0;
  64         }
  65
  66         update_audio_configuration();
  67 }
  68
  69 /* FIXME: Comments seem to suggest these are not entirely correct. */
  70 static const fsp_ddi_descriptor non_hdmi_ddi_descriptors[] = {
  71         {
  72                 // DDI0, DP0, eDP
  73                 .connector_type = EDP,
  74                 .aux_index = AUX1,
  75                 .hdp_index = HDP1
  76         },
  77         {
  78                 // DDI1, DP1, DB OPT2 USB-C1 / DB OPT3 MST hub
  79                 .connector_type = DP,
  80                 .aux_index = AUX2,
  81                 .hdp_index = HDP2
  82         },
  83         {
  84                 // DP2 pins not connected on Dali
  85                 // DDI2, DP3, USB-C0
  86                 .connector_type = DP,
  87                 .aux_index = AUX4,
  88                 .hdp_index = HDP4,
  89         }
  90 };
  91
  92 static const fsp_ddi_descriptor hdmi_ddi_descriptors[] = {
  93         { // DDI0, DP0, eDP
  94                 .connector_type = EDP,
  95                 .aux_index = AUX1,
  96                 .hdp_index = HDP1
  97         },
  98         { // DDI1, DP1, DB OPT2 USB-C1 / DB OPT3 MST hub
  99                 .connector_type = HDMI,
 100                 .aux_index = AUX2,
 101                 .hdp_index = HDP2
 102         },
 103         // DP2 pins not connected on Dali
 104         { // DDI2, DP3, USB-C0
 105                 .connector_type = DP,
 106                 .aux_index = AUX4,
 107                 .hdp_index = HDP4,
 108         }
 109 };
 110
 111 void variant_get_dxio_ddi_descriptors(const fsp_dxio_descriptor **dxio_descs,
 112                                       size_t *dxio_num,
 113                                       const fsp_ddi_descriptor **ddi_descs,
 114                                       size_t *ddi_num)
 115 {
 116         uint32_t daughterboard_id = variant_get_daughterboard_id();
 117
 118         *dxio_descs = baseboard_get_dxio_descriptors(dxio_num);
 119
 120         /*
 121          * Get daughterboard id from FW_CONFIG and configure descriptors accordingly.
 122          * For unprovisioned boards use DB_HDMI as default.
 123          */
 124         if ((daughterboard_id == DALBOZ_DB_HDMI) || boot_is_factory_unprovisioned()) {
 125                 *ddi_descs = &hdmi_ddi_descriptors[0];
 126                 *ddi_num = ARRAY_SIZE(hdmi_ddi_descriptors);
 127         } else {
 128                 *ddi_descs = &non_hdmi_ddi_descriptors[0];
 129                 *ddi_num = ARRAY_SIZE(non_hdmi_ddi_descriptors);
 130         }
 131 }