linux-kernel - [PATCH 1/3] arm64: dts: lx2160a: specify clock frequencies for the MDIO controllers

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Message-Id: <20221025144117.1010488-2-ioana.ciornei@nxp.com>
Date:   Tue, 25 Oct 2022 17:41:15 +0300
From:   Ioana Ciornei <ioana.ciornei@....com>
To:     shawnguo@...nel.org
Cc:     leoyang.li@....com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, rmk+kernel@...linux.org.uk,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ioana Ciornei <ioana.ciornei@....com>
Subject: [PATCH 1/3] arm64: dts: lx2160a: specify clock frequencies for the MDIO controllers

Up until now, the external MDIO controller frequency values relied
either on the default ones out of reset or on those setup by u-boot.
Let's just properly specify the MDC frequency in the DTS so that even
without u-boot's intervention Linux can drive the MDIO bus.

Fixes: 6e1b8fae892d ("arm64: dts: lx2160a: add emdio1 node")
Fixes: 5705b9dcda57 ("arm64: dts: lx2160a: add emdio2 node")
Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
---
 arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
index 6680fb2a6dc9..8c76d86cb756 100644
--- a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
@@ -1385,6 +1385,9 @@ emdio1: mdio@...6000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			little-endian;
+			clock-frequency = <2500000>;
+			clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL
+					    QORIQ_CLK_PLL_DIV(2)>;
 			status = "disabled";
 		};
 
@@ -1395,6 +1398,9 @@ emdio2: mdio@...7000 {
 			little-endian;
 			#address-cells = <1>;
 			#size-cells = <0>;
+			clock-frequency = <2500000>;
+			clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL
+					    QORIQ_CLK_PLL_DIV(2)>;
 			status = "disabled";
 		};
 
-- 
2.25.1