[PATCH 1/2] arm64: zynqmp: Describe TI phy as ethernet phy ID on ZCU102 RevB & up

Michal Simek michal.simek at amd.com
Mon Dec 12 15:14:17 CET 2022


From: Harini Katakam <harini.katakam at amd.com>

TI phy requires a reset before PHY address detection to make sure
correct strapping via MIO is detected. Facilitate the same using
ethernet-phy-id compatible string. GPIO reset entry will be added in
a separate commit.
This support is present in RevA but needs to be extended to RevB/1.0/1.1
versions which are built on top.

Fixes: 13622c7a9dfa ("arm64: zynqmp: Describe TI phy as ethernet-phy-id")
Signed-off-by: Harini Katakam <harini.katakam at amd.com>
Signed-off-by: Michal Simek <michal.simek at amd.com>
---

 arch/arm/dts/zynqmp-zcu102-revB.dts | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/arch/arm/dts/zynqmp-zcu102-revB.dts b/arch/arm/dts/zynqmp-zcu102-revB.dts
index 2422558b7484..b2f0b1133175 100644
--- a/arch/arm/dts/zynqmp-zcu102-revB.dts
+++ b/arch/arm/dts/zynqmp-zcu102-revB.dts
@@ -16,16 +16,20 @@
 
 &gem3 {
 	phy-handle = <&phyc>;
-	phyc: ethernet-phy at c {
-		reg = <0xc>;
-		ti,rx-internal-delay = <0x8>;
-		ti,tx-internal-delay = <0xa>;
-		ti,fifo-depth = <0x1>;
-		ti,dp83867-rxctrl-strap-quirk;
-		/* reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>; */
+	mdio: mdio {
+		phyc: ethernet-phy at c {
+			#phy-cells = <0x1>;
+			compatible = "ethernet-phy-id2000.a231";
+			reg = <0xc>;
+			ti,rx-internal-delay = <0x8>;
+			ti,tx-internal-delay = <0xa>;
+			ti,fifo-depth = <0x1>;
+			ti,dp83867-rxctrl-strap-quirk;
+			/* reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>; */
+		};
+		/* Cleanup from RevA */
+		/delete-node/ ethernet-phy at 21;
 	};
-	/* Cleanup from RevA */
-	/delete-node/ ethernet-phy at 21;
 };
 
 /* Fix collision with u61 */
-- 
2.36.1



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