linux-kernel - [PATCH 17/23] arm64: zynqmp: Switch to ethernet-phy-id in kv260

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Date:   Tue, 2 May 2023 15:35:45 +0200
From:   Michal Simek <michal.simek@....com>
To:     <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
        <michal.simek@...inx.com>, <git@...inx.com>
CC:     Andrew Davis <afd@...com>,
        Ashok Reddy Soma <ashok.reddy.soma@...inx.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH 17/23] arm64: zynqmp: Switch to ethernet-phy-id in kv260

Use ethernet-phy-id compatible string to properly describe phy reset on
kv260 boards. Previous description wasn't correct because reset was done
for mdio bus to operate and it was in this case used for different purpose
which was eth phy reset. With ethernet-phy-id phy reset happens only for
the phy via phy framework.

Signed-off-by: Michal Simek <michal.simek@....com>
---

 arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso | 6 ++++--
 arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso | 6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
index cb4a5126c4ec..817d756142ab 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
@@ -146,16 +146,18 @@ &gem3 { /* required by spec */
 	mdio: mdio {
 		#address-cells = <1>;
 		#size-cells = <0>;
-		reset-gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
-		reset-delay-us = <2>;
 
 		phy0: ethernet-phy@1 {
 			#phy-cells = <1>;
 			reg = <1>;
+			compatible = "ethernet-phy-id2000.a231";
 			ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_25_NS>;
 			ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_75_NS>;
 			ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
 			ti,dp83867-rxctrl-strap-quirk;
+			reset-assert-us = <100>;
+			reset-deassert-us = <280>;
+			reset-gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
 		};
 	};
 };
diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
index 31bc120dee49..e07cec231ee0 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
@@ -129,16 +129,18 @@ &gem3 { /* required by spec */
 	mdio: mdio {
 		#address-cells = <1>;
 		#size-cells = <0>;
-		reset-gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
-		reset-delay-us = <2>;
 
 		phy0: ethernet-phy@1 {
 			#phy-cells = <1>;
 			reg = <1>;
+			compatible = "ethernet-phy-id2000.a231";
 			ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_25_NS>;
 			ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_75_NS>;
 			ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
 			ti,dp83867-rxctrl-strap-quirk;
+			reset-assert-us = <100>;
+			reset-deassert-us = <280>;
+			reset-gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
 		};
 	};
 };
-- 
2.36.1