arm64: dts: ls1012a: Add coreclk

From: Scott Wood <[email protected]>

ls1012a has separate input root clocks for core PLLs versus the platform PLL, with the latter described as sysclk in the hw docs. Accordingly, update the clock-frequency in sysclk to 125M as platform input clock.

---
v2:
- add explanation about frequency change
Note 1: Current versions of U-Boot are blindly updating the frequency of all fixed-clock nodes. That needs to be fixed for the split input frequency to work properly, but until U-Boot is fixed this change doesn't make anything worse than it already was.
Note 2: coreclk binding has been merged in mainline clock git tree:
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git

 arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

index 9a2ccd8..b1554cb 100644
@@ -76,10 +76,17 @@
 	sysclk: sysclk {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
-		clock-frequency = <100000000>;
+		clock-frequency = <125000000>;
 		clock-output-names = "sysclk";
 	};
 
+	coreclk: coreclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+		clock-output-names = "coreclk";
+	};
+
 	timer {
 		compatible = "arm,armv8-timer";
 		interrupts = <1 13 IRQ_TYPE_LEVEL_LOW>,/* Physical Secure PPI */

@@ -248,7 +255,8 @@
 			compatible = "fsl,ls1012a-clockgen";
 			reg = <0x0 0x1ee1000 0x0 0x1000>;
 			#clock-cells = <2>;
-			clocks = <&sysclk>;
+			clocks = <&sysclk &coreclk>;
+			clock-names = "sysclk", "coreclk";
 		};
 
 		tmu: tmu at 1f00000 {

2.1.0.27.g96db324

Applied, thanks.