diff options
| -rw-r--r-- | drivers/ufs/host/ufs-qcom.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 39eef470f8fa..d9ec2dfbbda4 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -843,15 +843,20 @@ static void ufs_qcom_set_phy_gear(struct ufs_qcom_host *host) struct ufs_host_params *host_params = &host->host_params; u32 val, dev_major; + /* + * Default to powering up the PHY to the max gear possible, which is + * backwards compatible with lower gears but not optimal from + * a power usage point of view. After device negotiation, if the + * gear is lower a reinit will be performed to program the PHY + * to the ideal gear for this combo of controller and device. + */ host->phy_gear = host_params->hs_tx_gear; if (host->hw_ver.major < 0x4) { /* - * For controllers whose major HW version is < 4, power up the - * PHY using minimum supported gear (UFS_HS_G2). Switching to - * max gear will be performed during reinit if supported. - * For newer controllers, whose major HW version is >= 4, power - * up the PHY using max supported gear. + * These controllers only have one PHY init sequence, + * let's power up the PHY using that (the minimum supported + * gear, UFS_HS_G2). */ host->phy_gear = UFS_HS_G2; } else if (host->hw_ver.major >= 0x5) { |