From: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Date: Wed, 30 Mar 2022 09:07:54 +0000 (+0200)
Subject: net: phy: Avoid phy gpio reset sequence if DM_ETH_PHY is enabled
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=ccc8656f7fb51d0f11cc7cea6c05daf1e30f6bad;p=u-boot.git

net: phy: Avoid phy gpio reset sequence if DM_ETH_PHY is enabled

If DM_ETH_PHY config is enabled PHY gpio reset is taken care by the
eth-phy-uclass driver, so use the PHY gpio reset functionality from
ethernet_id file when this config is disabled to reset the PHY.
Use debug() print instead of dev_err() to avoid warning incase if phy-id
compatible string is not present.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/4d0fd3f9f886c1d943776025e5efb5438b0eb389.1648631275.git.michal.simek@xilinx.com
---

diff --git a/drivers/net/phy/ethernet_id.c b/drivers/net/phy/ethernet_id.c
index 44abc5bfb3..1a78a751ed 100644
--- a/drivers/net/phy/ethernet_id.c
+++ b/drivers/net/phy/ethernet_id.c
@@ -33,31 +33,38 @@ struct phy_device *phy_connect_phy_id(struct mii_dev *bus, struct udevice *dev,
 
 	ret = ofnode_read_eth_phy_id(node, &vendor, &device);
 	if (ret) {
-		dev_err(dev, "Failed to read eth PHY id, err: %d\n", ret);
+		debug("Failed to read eth PHY id, err: %d\n", ret);
 		return NULL;
 	}
 
-	ret = gpio_request_by_name_nodev(node, "reset-gpios", 0, &gpio,
-					 GPIOD_ACTIVE_LOW);
-	if (!ret) {
-		assert = ofnode_read_u32_default(node, "reset-assert-us", 0);
-		deassert = ofnode_read_u32_default(node,
-						   "reset-deassert-us", 0);
-		ret = dm_gpio_set_value(&gpio, 1);
-		if (ret) {
-			dev_err(dev, "Failed assert gpio, err: %d\n", ret);
-			return NULL;
-		}
+	if (!IS_ENABLED(CONFIG_DM_ETH_PHY)) {
+		ret = gpio_request_by_name_nodev(node, "reset-gpios", 0, &gpio,
+						 GPIOD_ACTIVE_LOW);
+		if (!ret) {
+			assert = ofnode_read_u32_default(node,
+							 "reset-assert-us", 0);
+			deassert = ofnode_read_u32_default(node,
+							   "reset-deassert-us",
+							   0);
+			ret = dm_gpio_set_value(&gpio, 1);
+			if (ret) {
+				dev_err(dev,
+					"Failed assert gpio, err: %d\n", ret);
+				return NULL;
+			}
 
-		udelay(assert);
+			udelay(assert);
 
-		ret = dm_gpio_set_value(&gpio, 0);
-		if (ret) {
-			dev_err(dev, "Failed deassert gpio, err: %d\n", ret);
-			return NULL;
-		}
+			ret = dm_gpio_set_value(&gpio, 0);
+			if (ret) {
+				dev_err(dev,
+					"Failed deassert gpio, err: %d\n",
+					ret);
+				return NULL;
+			}
 
-		udelay(deassert);
+			udelay(deassert);
+		}
 	}
 
 	id =  vendor << 16 | device;