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From:   Oleksij Rempel <o.rempel@pengutronix.de>
To:     Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Abel Vesa <abelvesa@kernel.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Richard Cochran <richardcochran@gmail.com>
Cc:     Oleksij Rempel <o.rempel@pengutronix.de>, kernel@pengutronix.de,
        Fabio Estevam <festevam@gmail.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        Russell King <linux@armlinux.org.uk>,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-clk@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH v2 19/19] ARM: dts: imx6ul-prti6g: configure ethernet reference clock parent
Date:   Tue, 17 Jan 2023 07:14:53 +0100
Message-Id: <20230117061453.3723649-20-o.rempel@pengutronix.de>
In-Reply-To: <20230117061453.3723649-1-o.rempel@pengutronix.de>
References: <20230117061453.3723649-1-o.rempel@pengutronix.de>
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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@pengutronix.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