diff options
Diffstat (limited to 'drivers/scsi/ufs/ufshcd-pltfrm.c')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd-pltfrm.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/scsi/ufs/ufshcd-pltfrm.c index d2a7b127b05c..718f12e09885 100644 --- a/drivers/scsi/ufs/ufshcd-pltfrm.c +++ b/drivers/scsi/ufs/ufshcd-pltfrm.c @@ -40,6 +40,8 @@ #include "ufshcd.h" #include "ufshcd-pltfrm.h" +#define UFSHCD_DEFAULT_LANES_PER_DIRECTION 2 + static int ufshcd_parse_clock_info(struct ufs_hba *hba) { int ret = 0; @@ -277,6 +279,21 @@ void ufshcd_pltfrm_shutdown(struct platform_device *pdev) } EXPORT_SYMBOL_GPL(ufshcd_pltfrm_shutdown); +static void ufshcd_init_lanes_per_dir(struct ufs_hba *hba) +{ + struct device *dev = hba->dev; + int ret; + + ret = of_property_read_u32(dev->of_node, "lanes-per-direction", + &hba->lanes_per_direction); + if (ret) { + dev_dbg(hba->dev, + "%s: failed to read lanes-per-direction, ret=%d\n", + __func__, ret); + hba->lanes_per_direction = UFSHCD_DEFAULT_LANES_PER_DIRECTION; + } +} + /** * ufshcd_pltfrm_init - probe routine of the driver * @pdev: pointer to Platform device handle @@ -331,6 +348,8 @@ int ufshcd_pltfrm_init(struct platform_device *pdev, pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev); + ufshcd_init_lanes_per_dir(hba); + err = ufshcd_init(hba, mmio_base, irq); if (err) { dev_err(dev, "Initialization failed\n"); |