From: Afzal Mohammed <afzal@xxxxxx>
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 <afzal@xxxxxx>
Acked-by: Tero Kristo <t-kristo@xxxxxx>
Signed-off-by: Sekhar Nori <nsekhar@xxxxxx>
---
arch/arm/boot/dts/am43xx-clocks.dtsi | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/arm/boot/dts/am43xx-clocks.dtsi b/arch/arm/boot/dts/am43xx-clocks.dtsi
index 142009c..71b029c 100644
--- a/arch/arm/boot/dts/am43xx-clocks.dtsi
+++ b/arch/arm/boot/dts/am43xx-clocks.dtsi
@@ -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>;
--
1.7.10.1
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