diff options
Diffstat (limited to 'src/mainboard/google')
| -rw-r--r-- | src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb | 10 | ||||
| -rw-r--r-- | src/mainboard/google/zork/variants/baseboard/devicetree_trembyle.cb | 10 |
2 files changed, 20 insertions, 0 deletions
diff --git a/src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb b/src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb index 40042436d3..ae712ee2be 100644 --- a/src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb +++ b/src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb @@ -42,6 +42,16 @@ chip soc/amd/picasso register "emmc_config" = "{ .timing = SD_EMMC_EMMC_HS400, + .sdr104_hs400_driver_strength = SD_EMMC_DRIVE_STRENGTH_A, + /* + * The reference design was missing a pull-up on the CMD line. + * This means we can't run at the full 400 kHz. By setting this + * to 1 we run at the slowest frequency possible by the + * controller (~97 kHz). + * + * Boards that have the pull-up should correctly set this. + */ + .init_khz_preset = 1, }" register "xhci0_force_gen1" = "0" diff --git a/src/mainboard/google/zork/variants/baseboard/devicetree_trembyle.cb b/src/mainboard/google/zork/variants/baseboard/devicetree_trembyle.cb index 8d475e956e..69179ece13 100644 --- a/src/mainboard/google/zork/variants/baseboard/devicetree_trembyle.cb +++ b/src/mainboard/google/zork/variants/baseboard/devicetree_trembyle.cb @@ -42,6 +42,16 @@ chip soc/amd/picasso register "emmc_config" = "{ .timing = SD_EMMC_EMMC_HS400, + .sdr104_hs400_driver_strength = SD_EMMC_DRIVE_STRENGTH_A, + /* + * The reference design was missing a pull-up on the CMD line. + * This means we can't run at the full 400 kHz. By setting this + * to 1 we run at the slowest frequency possible by the + * controller (~97 kHz). + * + * Boards that have the pull-up should correctly set this. + */ + .init_khz_preset = 1, }" register "xhci0_force_gen1" = "0" |