linux-kernel - [PATCH v7 04/13] phy: ti: j721e-wiz: Get PHY properties only for "phy" or "link" subnode

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Date:   Fri, 19 Mar 2021 18:11:19 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Swapnil Jakhade <sjakhade@...ence.com>
CC:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-phy@...ts.infradead.org>, Lokesh Vutla <lokeshvutla@...com>
Subject: [PATCH v7 04/13] phy: ti: j721e-wiz: Get PHY properties only for "phy" or "link" subnode

"serdes" node (child node of WIZ) can have sub-nodes for representing links
or it can have sub-nodes for representing the various clocks within the
serdes. Instead of trying to read "reg" from every child node used for
assigning "lane_phy_type", read only if the child node's name is "phy"
or "link" subnode.
Ideally all PHY dt nodes should have node name as "phy", however
existing devicetree used "link" as subnode. So in order to maintain old
DT compatibility get PHY properties for "phy" or "link" subnode.

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 drivers/phy/ti/phy-j721e-wiz.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index 1bb73822f44a..659597645201 100644
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -1102,6 +1102,10 @@ static int wiz_get_lane_phy_types(struct device *dev, struct wiz *wiz)
 		u32 reg, num_lanes = 1, phy_type = PHY_NONE;
 		int ret, i;
 
+		if (!(of_node_name_eq(subnode, "phy") ||
+		      of_node_name_eq(subnode, "link")))
+			continue;
+
 		ret = of_property_read_u32(subnode, "reg", &reg);
 		if (ret) {
 			dev_err(dev,
-- 
2.17.1