scsi: hisi_sas: Add v2 hw support for different refclk

[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / hisi_sas / hisi_sas_main.c

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 2f872f784e109e85b0e32af473f4920274aa953b..9afc6978cb776e72f39cb820d4d5ecad2f334658 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1396,6 +1396,7 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
        struct hisi_hba *hisi_hba;
        struct device *dev = &pdev->dev;
        struct device_node *np = pdev->dev.of_node;
+       struct clk *refclk;
 
        shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba));
        if (!shost)
@@ -1432,6 +1433,12 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
                        goto err_out;
        }
 
+       refclk = devm_clk_get(&pdev->dev, NULL);
+       if (IS_ERR(refclk))
+               dev_info(dev, "no ref clk property\n");
+       else
+               hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000;
+
        if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy))
                goto err_out;