ARM: dts: AM4372: clk: efuse based crystal frequency detect

From: Afzal Mohammed <[email protected]>

Currently oscillator frequency is determined based on sysboot settings, it may not be the case always. To determine it properly, efuse settings also has to be read. CONTROL_STATUS register holds this information.
Bit 31: if 0, frequency to be determined based on sysboot
if 1, frequency to be determined based on efuse
Bit 29,30 - for efuse detection of frequency
Bit 22,23 - for sysboot detection of frequency

Add clock nodes (mux) to determine oscillator frequency as above.

Signed-off-by Afzal Mohammed <[email protected]>

Acked-by Tero Kristo <[email protected]>

Signed-off-by Sekhar Nori <[email protected]>

---
  arch/arm/boot/dts/am43xx-clocks.dtsi |   16 ++++++++++++++++
  1 file changed, 16 insertions(+)

arch/arm/boot/dts/am43xx-clocks.dtsi +16 -0

index 142009c..71b029c 100644
@@ -11,6 +11,22 @@
  	sys_clkin_ck: sys_clkin_ck {
  		#clock-cells = <0>;
  		compatible = "ti,mux-clock";
+		clocks = <&sysboot_freq_sel_ck>, <&crystal_freq_sel_ck>;
+		ti,bit-shift = <31>;
+		reg = <0x0040>;
+	};
+
+	crystal_freq_sel_ck: crystal_freq_sel_ck {
+		#clock-cells = <0>;
+		compatible = "ti,mux-clock";
+		clocks = <&virt_19200000_ck>, <&virt_24000000_ck>, <&virt_25000000_ck>, <&virt_26000000_ck>;
+		ti,bit-shift = <29>;
+		reg = <0x0040>;
+	};
+
+	sysboot_freq_sel_ck: sysboot_freq_sel_ck@44e10040 {
+		#clock-cells = <0>;
+		compatible = "ti,mux-clock";
  		clocks = <&virt_19200000_ck>, <&virt_24000000_ck>, <&virt_25000000_ck>, <&virt_26000000_ck>;
  		ti,bit-shift = <22>;
  		reg = <0x0040>;