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

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@ti.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
This commit is contained in:
Afzal Mohammed 2014-05-14 17:06:37 +05:30 committed by Tero Kristo
parent 10a6e1832b
commit f7c66b7110
1 changed files with 16 additions and 0 deletions
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16
arch/arm/boot/dts/am43xx-clocks.dtsi
View File

@ -9,6 +9,22 @@
*/
&scrm_clocks {
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>;