[PATCH] ARM: dts: aspeed: drop unused ref_voltage ADC property

[Krzysztof Kozlowski]

Aspeed ADC "ref_voltage" property is neither documented nor used.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
---
 arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts   | 2 --
 arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-greatlakes.dts | 2 --
 arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts  | 2 --
 3 files changed, 6 deletions(-)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
index 0715cb9ab30c..d7baa02e4666 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
@@ -541,7 +541,6 @@ bmc_ast2600_cpu: temperature-sensor at 35 {
 };
 
 &adc0 {
-	ref_voltage = <2500>;
 	status = "okay";
 
 	pinctrl-names = "default";
@@ -552,7 +551,6 @@ &pinctrl_adc4_default &pinctrl_adc5_default
 };
 
 &adc1 {
-	ref_voltage = <2500>;
 	status = "okay";
 
 	pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-greatlakes.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-greatlakes.dts
index 7a53f54833a0..a86bc75a9182 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-greatlakes.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-greatlakes.dts
@@ -211,7 +211,6 @@ &i2c13 {
 };
 
 &adc0 {
-	ref_voltage = <2500>;
 	status = "okay";
 	pinctrl-0 = <&pinctrl_adc0_default &pinctrl_adc1_default
 			&pinctrl_adc2_default &pinctrl_adc3_default
@@ -220,7 +219,6 @@ &pinctrl_adc4_default &pinctrl_adc5_default
 };
 
 &adc1 {
-	ref_voltage = <2500>;
 	status = "okay";
 	pinctrl-0 = <&pinctrl_adc8_default &pinctrl_adc10_default
 			&pinctrl_adc11_default &pinctrl_adc12_default
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts
index 64075cc41d92..4097e3d355cb 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts
@@ -596,7 +596,6 @@ i2c-mux at 72 {
 };
 
 &adc0 {
-	ref_voltage = <2500>;
 	status = "okay";
 	pinctrl-0 = <&pinctrl_adc0_default &pinctrl_adc1_default
 			&pinctrl_adc2_default &pinctrl_adc3_default
@@ -605,7 +604,6 @@ &pinctrl_adc4_default &pinctrl_adc5_default
 };
 
 &adc1 {
-	ref_voltage = <2500>;
 	status = "okay";
 	pinctrl-0 = <&pinctrl_adc8_default &pinctrl_adc9_default>;
 };
-- 
2.34.1