diff options
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/ti/phy-j721e-wiz.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c index 02c47b2df01f..25238051680d 100644 --- a/drivers/phy/ti/phy-j721e-wiz.c +++ b/drivers/phy/ti/phy-j721e-wiz.c @@ -1134,13 +1134,14 @@ static int wiz_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct device_node *node = dev->of_node; struct platform_device *serdes_pdev; + bool already_configured = false; struct device_node *child_node; struct regmap *regmap; struct resource res; void __iomem *base; struct wiz *wiz; + int ret, val, i; u32 num_lanes; - int ret; wiz = devm_kzalloc(dev, sizeof(*wiz), GFP_KERNEL); if (!wiz) @@ -1268,10 +1269,20 @@ static int wiz_probe(struct platform_device *pdev) goto err_get_sync; } - ret = wiz_init(wiz); - if (ret) { - dev_err(dev, "WIZ initialization failed\n"); - goto err_wiz_init; + for (i = 0; i < wiz->num_lanes; i++) { + regmap_field_read(wiz->p_enable[i], &val); + if (val & (P_ENABLE | P_ENABLE_FORCE)) { + already_configured = true; + break; + } + } + + if (!already_configured) { + ret = wiz_init(wiz); + if (ret) { + dev_err(dev, "WIZ initialization failed\n"); + goto err_wiz_init; + } } serdes_pdev = of_platform_device_create(child_node, NULL, dev); |