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phy: qcom-ufs: separate out 2 lanes configuration

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Some platforms have 2 UFS PHY instances, one instance supports 2-lane while
other instance supports only 1-lane. This change separates out the 2nd lane
configuration from 1-lane configuration so that we can apply the 2nd lane
configuration only if needed.

Change-Id: Idcf8aaa8ed7a9662c0f4186e5a28d2405f8fd5fc
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
[cang@codeaurora.org: resolved trivial merge conflicts]
Signed-off-by: Can Guo <cang@codeaurora.org>
This commit is contained in:
Can Guo 2019-08-20 00:58:46 -07:00
commit 427b10e68e
2 changed files with 11 additions and 0 deletions
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4
drivers/phy/qualcomm/phy-qcom-ufs-i.h
View file

@ -72,6 +72,10 @@ struct ufs_qcom_phy {
struct ufs_qcom_phy_vreg vdda_pll;
struct ufs_qcom_phy_vreg vdda_phy;
struct ufs_qcom_phy_vreg vddp_ref_clk;
/* Number of lanes available (1 or 2) for Rx/Tx */
u32 lanes_per_direction;
unsigned int quirks;
/*

7
drivers/phy/qualcomm/phy-qcom-ufs.c
View file

@ -13,6 +13,8 @@
#define VDDP_REF_CLK_MIN_UV 1200000
#define VDDP_REF_CLK_MAX_UV 1200000
#define UFS_PHY_DEFAULT_LANES_PER_DIRECTION 1
int ufs_qcom_phy_calibrate(struct ufs_qcom_phy *ufs_qcom_phy,
struct ufs_qcom_phy_calibration *tbl_A,
int tbl_size_A,
@ -123,6 +125,11 @@ struct phy *ufs_qcom_phy_generic_probe(struct platform_device *pdev,
goto out;
}
if (of_property_read_u32(dev->of_node, "lanes-per-direction",
&common_cfg->lanes_per_direction))
common_cfg->lanes_per_direction =
UFS_PHY_DEFAULT_LANES_PER_DIRECTION;
/*
* UFS PHY power management is managed by its parent (UFS host
* controller) hence set the no runtime PM callbacks flag