ARM: dts: add property for maximum ADC clock frequencies

The ADC clock frequency is limited depending on modes used. Add
device tree property which allow to set the mode used and the
maximum frequency ratings for the instance. These allows to
set the ADC clock to a frequency which is within specification
according to the actual mode used.

Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/vfxxx.dtsi b/arch/arm/boot/dts/vfxxx.dtsi
index c0f05ee77ae54637b562beb8cf18264175c62e7e..6865137fd114c7364c88f104a7413bf3d89c3218 100644 (file)
--- a/arch/arm/boot/dts/vfxxx.dtsi
+++ b/arch/arm/boot/dts/vfxxx.dtsi
@@ -228,6 +228,8 @@
                                clock-names = "adc";
                                #io-channel-cells = <1>;
                                status = "disabled";
+                               fsl,adck-max-frequency = <30000000>, <40000000>,
+                                                       <20000000>;
                        };
 
                        wdoga5: wdog@4003e000 {
@@ -470,6 +472,8 @@
                                        <&clks VF610_CLK_ESDHC0>;
                                clock-names = "ipg", "ahb", "per";
                                status = "disabled";
+                               fsl,adck-max-frequency = <30000000>, <40000000>,
+                                                       <20000000>;
                        };
 
                        esdhc1: esdhc@400b2000 {