Revert "powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file"

This reverts commit 894116bd.

I applied the wrong version of this patch, correct
version coming up.
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/fsl-tsec-phy.txt

@@ -86,7 +86,6 @@ General Properties:
 
 Clock Properties:
 
-  - fsl,cksel        Timer reference clock source.
   - fsl,tclk-period  Timer reference clock period in nanoseconds.
   - fsl,tmr-prsc     Prescaler, divides the output clock.
   - fsl,tmr-add      Frequency compensation value.
@@ -98,7 +97,7 @@ Clock Properties:
   clock. You must choose these carefully for the clock to work right.
   Here is how to figure good values:
 
-  TimerOsc     = selected reference clock   MHz
+  TimerOsc     = system clock               MHz
   tclk_period  = desired clock period       nanoseconds
   NominalFreq  = 1000 / tclk_period         MHz
   FreqDivRatio = TimerOsc / NominalFreq     (must be greater that 1.0)
@@ -115,18 +114,6 @@ Clock Properties:
   Pulse Per Second (PPS) signal, since this will be offered to the PPS
   subsystem to synchronize the Linux clock.
 
-  "fsl,cksel" property allows to select different reference clock
-  sources:
-
-  <0> - external high precision timer reference clock (TSEC_TMR_CLK
-        input is used for this purpose);
-  <1> - eTSEC system clock;
-  <2> - eTSEC1 transmit clock;
-  <3> - RTC clock input.
-
-  When this attribute is not used, eTSEC system clock will serve as
-  IEEE 1588 timer reference clock.
-
 Example:
 
 	ptp_clock@24E00 {
@@ -134,7 +121,6 @@ Example:
 		reg = <0x24E00 0xB0>;
 		interrupts = <12 0x8 13 0x8>;
 		interrupt-parent = < &ipic >;
-		fsl,cksel       = <1>;
 		fsl,tclk-period = <10>;
 		fsl,tmr-prsc    = <100>;
 		fsl,tmr-add     = <0x999999A4>;

drivers/net/ethernet/freescale/gianfar_ptp.c

@@ -452,9 +452,7 @@ static int gianfar_ptp_probe(struct platform_device *dev)
 	err = -ENODEV;
 
 	etsects->caps = ptp_gianfar_caps;
-
-	if (get_of_u32(node, "fsl,cksel", &etsects->cksel))
-		etsects->cksel = DEFAULT_CKSEL;
+	etsects->cksel = DEFAULT_CKSEL;
 
 	if (get_of_u32(node, "fsl,tclk-period", &etsects->tclk_period) ||
 	    get_of_u32(node, "fsl,tmr-prsc", &etsects->tmr_prsc) ||