linux-kernel - [PATCH v2 19/19] ARM: dts: imx6ul-prti6g: configure ethernet reference clock parent

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Message-Id: <20230117061453.3723649-20-o.rempel@pengutronix.de>
Date:   Tue, 17 Jan 2023 07:14:53 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Abel Vesa <abelvesa@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Richard Cochran <richardcochran@...il.com>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>, kernel@...gutronix.de,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Russell King <linux@...linux.org.uk>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH v2 19/19] ARM: dts: imx6ul-prti6g: configure ethernet reference clock parent

On this board the PHY is the ref clock provider. So, configure ethernet
reference clock as input.

Without this patch we have relatively high amount of dropped packets.

Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
---
 arch/arm/boot/dts/imx6ul-prti6g.dts | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/imx6ul-prti6g.dts b/arch/arm/boot/dts/imx6ul-prti6g.dts
index c18390f238e1..b7c96fbe7a91 100644
--- a/arch/arm/boot/dts/imx6ul-prti6g.dts
+++ b/arch/arm/boot/dts/imx6ul-prti6g.dts
@@ -26,6 +26,7 @@ clock_ksz8081_out: clock-ksz8081-out {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
 		clock-frequency = <50000000>;
+		clock-output-names = "enet1_ref_pad";
 	};
 
 	leds {
@@ -60,6 +61,13 @@ &can2 {
 	status = "okay";
 };
 
+&clks {
+	clocks = <&ckil>, <&osc>, <&ipp_di0>, <&ipp_di1>, <&clock_ksz8081_out>;
+	clock-names = "ckil", "osc", "ipp_di0", "ipp_di1", "enet1_ref_pad";
+	assigned-clocks = <&clks IMX6UL_CLK_ENET1_REF_SEL>;
+	assigned-clock-parents = <&clock_ksz8081_out>;
+};
+
 &ecspi1 {
 	cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>;
 	pinctrl-names = "default";
@@ -85,12 +93,6 @@ &fec1 {
 	pinctrl-0 = <&pinctrl_eth1>;
 	phy-mode = "rmii";
 	phy-handle = <&rmii_phy>;
-	clocks = <&clks IMX6UL_CLK_ENET>,
-		 <&clks IMX6UL_CLK_ENET_AHB>,
-		 <&clks IMX6UL_CLK_ENET_PTP>,
-		 <&clock_ksz8081_out>;
-	clock-names = "ipg", "ahb", "ptp",
-		      "enet_clk_ref";
 	status = "okay";
 
 	mdio {
-- 
2.30.2