diff options
| author | Venkat Gopalakrishnan <venkatg@codeaurora.org> | 2016-08-18 16:58:20 -0700 |
|---|---|---|
| committer | Venkat Gopalakrishnan <venkatg@codeaurora.org> | 2016-08-29 00:16:13 -0700 |
| commit | b938e3480e77c692e14e7b60e5edb4fdd98938a9 (patch) | |
| tree | 02de02c908614bcac09ea420a8cfb005fc2b96fd /drivers/scsi | |
| parent | 19bec73759710b1dfab4ae469b55eff0f329c3b5 (diff) | |
scsi: ufs: add 2 lane support
Qcom ufs controller v3.1.0 supports 2 lanes, add support
to configure 2 lanes during phy initialization.
Change-Id: Ifa2bac71b47ce49a6fb31ebb8dd54b243e1cfae1
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/ufs/ufs-qcom.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c index 60dc8b21044a..b8067a11a665 100644 --- a/drivers/scsi/ufs/ufs-qcom.c +++ b/drivers/scsi/ufs/ufs-qcom.c @@ -127,10 +127,10 @@ static void ufs_qcom_disable_lane_clks(struct ufs_qcom_host *host) if (!host->is_lane_clks_enabled) return; - if (host->hba->lanes_per_direction > 1) + if (host->tx_l1_sync_clk) clk_disable_unprepare(host->tx_l1_sync_clk); clk_disable_unprepare(host->tx_l0_sync_clk); - if (host->hba->lanes_per_direction > 1) + if (host->rx_l1_sync_clk) clk_disable_unprepare(host->rx_l1_sync_clk); clk_disable_unprepare(host->rx_l0_sync_clk); @@ -161,17 +161,14 @@ static int ufs_qcom_enable_lane_clks(struct ufs_qcom_host *host) if (err) goto disable_tx_l0; - err = ufs_qcom_host_clk_enable(dev, "tx_lane1_sync_clk", - host->tx_l1_sync_clk); - if (err) - goto disable_rx_l1; + /* The tx lane1 clk could be muxed, hence keep this optional */ + if (host->tx_l1_sync_clk) + ufs_qcom_host_clk_enable(dev, "tx_lane1_sync_clk", + host->tx_l1_sync_clk); } host->is_lane_clks_enabled = true; goto out; -disable_rx_l1: - if (host->hba->lanes_per_direction > 1) - clk_disable_unprepare(host->rx_l1_sync_clk); disable_tx_l0: clk_disable_unprepare(host->tx_l0_sync_clk); disable_rx_l0: @@ -202,8 +199,9 @@ static int ufs_qcom_init_lane_clks(struct ufs_qcom_host *host) if (err) goto out; - err = ufs_qcom_host_clk_get(dev, "tx_lane1_sync_clk", - &host->tx_l1_sync_clk); + /* The tx lane1 clk could be muxed, hence keep this optional */ + ufs_qcom_host_clk_get(dev, "tx_lane1_sync_clk", + &host->tx_l1_sync_clk); } out: return err; |