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Commit b938e348 authored by Venkat Gopalakrishnan's avatar Venkat Gopalakrishnan
Browse files

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: default avatarVenkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
parent 19bec737

drivers/scsi/ufs/ufs-qcom.c

+9 −11
Original line number Diff line number Diff line
@@ -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",

		/* 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);

		if (err)

			goto disable_rx_l1;

	}

	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:
@@ -202,7 +199,8 @@ 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",

		/* 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: