On Tue, 13 Jan 2015 12:27:15 +0000
Russell King - ARM Linux <linux at arm.linux.org.uk> wrote:
> On Tue, Jan 13, 2015 at 01:21:58PM +0100, Philipp Zabel wrote:
> > I wonder if it wouldn't be nicer to have the AP# and type in the device
> > tree and then calculate the register value from that in the driver.
> >
> > port at 1 {
> > reg = <1>; /* AP1 */
> > nxp,audio-port = "i2s";
> > tda998x_i2s: endpoint {
> > remote-endpoint = <&audio1_i2s>;
> > };
> > };
>
> What about the case where we have 4 I2S streams being supplied to the
> device on four separate AP inputs?
4 streams on 4 different APs (sources) should work, but 4 streams from
a same source should be detailed.
In an other way, the unit address (== first reg) does not need to be a
sequence number. It is the I/O base in most DTs.
So, it could be the port value:
port at 230145 {
port-type = "rgb";
reg = <0x230145>;
hdmi_0: endpoint {
remote-endpoint = <&lcd0_0>;
};
};
port at 3 { /* AP1 = I2S */
port-type = "i2s";
reg = <0x03>;
tda998x_i2s: endpoint {
remote-endpoint = <&audio1_i2s>;
};
};
port at 4 { /* AP2 = S/PDIF */
port-type = "spdif";
reg = <0x04>;
tda998x_spdif: endpoint {
remote-endpoint = <&audio1_spdif1>;
};
};
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