diff options
Diffstat (limited to 'src/mainboard/google/zork')
| -rw-r--r-- | src/mainboard/google/zork/variants/dalboz/variant.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/mainboard/google/zork/variants/dalboz/variant.c b/src/mainboard/google/zork/variants/dalboz/variant.c index 02121611a1..de4338e446 100644 --- a/src/mainboard/google/zork/variants/dalboz/variant.c +++ b/src/mainboard/google/zork/variants/dalboz/variant.c @@ -127,9 +127,21 @@ void variant_devtree_update(void) cfg = config_of_soc(); if (sku_has_emmc()) { - if (sku_id() == 0x5A800003) - /* rev0 boards have issues with HS400 */ + if ((sku_id() == 0x5A800003) || (sku_id() == 0x5A80000C)) { + /* + * rev0 and rev1 boards have issues with HS400 + * + * There is a tuning fix with ES which shows promise + * for some boards, and a HW fix with stitching vias. + * There were also concerns that these boards did not + * have good margins for certain skus. + * + * But these original boards have none of these fixes. + * So we keep the speed low here, with the intent that + * other variants implement these corrections. + */ cfg->sd_emmc_config = SD_EMMC_EMMC_HS200; + } } else { cfg->sd_emmc_config = SD_EMMC_DISABLE; } |