Update MDIO configuration with ZII devices to fully utilize
MDIO endpoint capabilities.  All devices support 12.5MHz clock and
don't require MDIO preable.

Signed-off-by: Chris Healy <cphe...@gmail.com>
Reviewed-by: Fabio Estevam <feste...@gmail.com>
---
v3:
- make "status = okay" the last property
v2:
- Fix subject line to reference ZII:
- Get rid of "=<1>;" from suppress-preamble lines

 arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi   | 2 ++
 arch/arm/boot/dts/vf610-zii-cfu1.dts      | 2 ++
 arch/arm/boot/dts/vf610-zii-dev.dtsi      | 2 ++
 arch/arm/boot/dts/vf610-zii-spb4.dts      | 2 ++
 arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts  | 2 ++
 arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts | 2 ++
 6 files changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi 
b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
index 20350e803377..5af9ce977b12 100644
--- a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
@@ -719,6 +719,8 @@
        mdio {
                #address-cells = <1>;
                #size-cells = <0>;
+               clock-frequency = <12500000>;
+               suppress-preamble;
                status = "okay";
 
                switch: switch@0 {
diff --git a/arch/arm/boot/dts/vf610-zii-cfu1.dts 
b/arch/arm/boot/dts/vf610-zii-cfu1.dts
index ce1920c052fc..64e0e9509226 100644
--- a/arch/arm/boot/dts/vf610-zii-cfu1.dts
+++ b/arch/arm/boot/dts/vf610-zii-cfu1.dts
@@ -158,6 +158,8 @@
        mdio1: mdio {
                #address-cells = <1>;
                #size-cells = <0>;
+               clock-frequency = <12500000>;
+               suppress-preamble;
                status = "okay";
 
                switch0: switch0@0 {
diff --git a/arch/arm/boot/dts/vf610-zii-dev.dtsi 
b/arch/arm/boot/dts/vf610-zii-dev.dtsi
index 95d0060fb56c..f8299f33a692 100644
--- a/arch/arm/boot/dts/vf610-zii-dev.dtsi
+++ b/arch/arm/boot/dts/vf610-zii-dev.dtsi
@@ -137,6 +137,8 @@
        mdio1: mdio {
                #address-cells = <1>;
                #size-cells = <0>;
+               clock-frequency = <12500000>;
+               suppress-preamble;
                status = "okay";
        };
 };
diff --git a/arch/arm/boot/dts/vf610-zii-spb4.dts 
b/arch/arm/boot/dts/vf610-zii-spb4.dts
index 55b4201e27f6..a68eae88174a 100644
--- a/arch/arm/boot/dts/vf610-zii-spb4.dts
+++ b/arch/arm/boot/dts/vf610-zii-spb4.dts
@@ -119,6 +119,8 @@
        mdio1: mdio {
                #address-cells = <1>;
                #size-cells = <0>;
+               clock-frequency = <12500000>;
+               suppress-preamble;
                status = "okay";
 
                switch0: switch0@0 {
diff --git a/arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts 
b/arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts
index a6c22a79779e..fa5ac9125af7 100644
--- a/arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts
+++ b/arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts
@@ -105,6 +105,8 @@
        mdio1: mdio {
                #address-cells = <1>;
                #size-cells = <0>;
+               clock-frequency = <12500000>;
+               suppress-preamble;
                status = "okay";
 
                switch0: switch0@0 {
diff --git a/arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts 
b/arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts
index 3d05c894bdc0..801133154e3d 100644
--- a/arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts
+++ b/arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts
@@ -133,6 +133,8 @@
        mdio1: mdio {
                #address-cells = <1>;
                #size-cells = <0>;
+               clock-frequency = <12500000>;
+               suppress-preamble;
                status = "okay";
 
                switch0: switch0@0 {
-- 
2.21.3

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