From: Hugo Villeneuve <hvilleneuve@dimonoff.com>

dmesg warning:

  OF: /soc/bus@2000000/ethernet@20b4000/mdio/ethernet-phy@3: Read of
      boolean property 'micrel,rmii-reference-clock-select-25-mhz' with a
      value.

Using of_property_read_bool() for non-boolean properties is deprecated and
results in a warning during runtime since commit c141ecc3cecd
("of: Warn when of_property_read_bool() is used on non-boolean properties")

micrel,rmii-reference-clock-select-25-mhz is a boolean property and should
not have a value, so remove it.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
---
 arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto.dts | 2 +-
 arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto.dts
index 9ff3b374a2b31..085985356668f 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto.dts
@@ -79,7 +79,7 @@ ethphy1: ethernet-phy@3 {
 			reset-gpios = <&gpio5 5 GPIO_ACTIVE_LOW>;
 			reset-assert-us = <100000>;
 			micrel,led-mode = <0>;
-			micrel,rmii-reference-clock-select-25-mhz = <1>;
+			micrel,rmii-reference-clock-select-25-mhz;
 		};
 	};
 };
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi
index 3fb5e2fb68777..30032be6fdd50 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi
@@ -64,7 +64,7 @@ ethphy0: ethernet-phy@1 {
 			reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
 			reset-assert-us = <100000>;
 			micrel,led-mode = <1>;
-			micrel,rmii-reference-clock-select-25-mhz = <1>;
+			micrel,rmii-reference-clock-select-25-mhz;
 		};
 	};
 };
-- 
2.47.3