Hi Chen-Yu,
indeed, it works now.
In case someone else wants to use it, it works like this:
in the dts file I put:
/ {
tss463aa {
compatible = "atmel,tss463aa";
clocks = <&clk_out_a>;
pinctrl-0 = <&clk_out_a_pins_a>;
pinctrl-names = "default";
};
};
&spi2 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&spi2_pins_a>;
tss463aax {
compatible = "atmel,tss463aa";
reg = <0>;
spi-max-frequency = <4000000>;
spi-cpol;
spi-cpha;
};
};
Note the differing pinctrl.
Also note that it doesn't work if I put clk_out_a in the spi slave node.
Then I created a Linux kernel module
http://svn.nomike.com/playground/trunk/Navi/TSS463AA/Linux/tss463aa.c
that basically does
probe {
clk1 = devm_clk_get(&pdev->dev, NULL);
rounded_rate = clk_round_rate(clk1, rate); /* Hz */
clk_set_rate(clk1, rounded_rate);
clk_prepare_enable(clk1);
}
and a MODULE_DEVICE_TABLE to match the compatible "atmel,tss463aa".
Then I checked the proper operation of the clk_out_a 4000 Hz clock by
connecting it
to an audio amplifier. Yup, worked.
Thanks,
Danny
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