diff options
| -rw-r--r-- | drivers/phy/phy-qcom-ufs.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/phy/phy-qcom-ufs.c b/drivers/phy/phy-qcom-ufs.c index 058617daaa94..33fa3727b850 100644 --- a/drivers/phy/phy-qcom-ufs.c +++ b/drivers/phy/phy-qcom-ufs.c @@ -192,16 +192,27 @@ ufs_qcom_phy_init_clks(struct phy *generic_phy, struct ufs_qcom_phy *phy_common) { int err; + struct ufs_qcom_phy *phy = get_ufs_qcom_phy(generic_phy); err = ufs_qcom_phy_clk_get(generic_phy, "tx_iface_clk", &phy_common->tx_iface_clk); + /* + * tx_iface_clk does not exist in newer version of ufs-phy HW, + * so don't return error if it is not found + */ if (err) - goto out; + dev_dbg(phy->dev, "%s: failed to get tx_iface_clk\n", + __func__); err = ufs_qcom_phy_clk_get(generic_phy, "rx_iface_clk", &phy_common->rx_iface_clk); + /* + * rx_iface_clk does not exist in newer version of ufs-phy HW, + * so don't return error if it is not found + */ if (err) - goto out; + dev_dbg(phy->dev, "%s: failed to get rx_iface_clk\n", + __func__); err = ufs_qcom_phy_clk_get(generic_phy, "ref_clk_src", &phy_common->ref_clk_src); @@ -492,6 +503,9 @@ int ufs_qcom_phy_enable_iface_clk(struct phy *generic_phy) if (phy->is_iface_clk_enabled) goto out; + if (!phy->tx_iface_clk) + goto out; + ret = clk_prepare_enable(phy->tx_iface_clk); if (ret) { dev_err(phy->dev, "%s: tx_iface_clk enable failed %d\n", @@ -517,6 +531,9 @@ void ufs_qcom_phy_disable_iface_clk(struct phy *generic_phy) { struct ufs_qcom_phy *phy = get_ufs_qcom_phy(generic_phy); + if (!phy->tx_iface_clk) + return; + if (phy->is_iface_clk_enabled) { clk_disable_unprepare(phy->tx_iface_clk); clk_disable_unprepare(phy->rx_iface_clk); |