mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 20:01:55 +00:00
36e5ecc298
Add bindings for audio driver in Broadcom Cygnus. Signed-off-by: Lori Hikichi <lhikichi@broadcom.com> Signed-off-by: Simran Rai <ssimran@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
68 lines
2.0 KiB
Plaintext
68 lines
2.0 KiB
Plaintext
BROADCOM Cygnus Audio I2S/TDM/SPDIF controller
|
|
|
|
Required properties:
|
|
- compatible : "brcm,cygnus-audio"
|
|
- #address-cells: 32bit valued, 1 cell.
|
|
- #size-cells: 32bit valued, 0 cell.
|
|
- reg : Should contain audio registers location and length
|
|
- reg-names: names of the registers listed in "reg" property
|
|
Valid names are "aud" and "i2s_in". "aud" contains a
|
|
set of DMA, I2S_OUT and SPDIF registers. "i2s_in" contains
|
|
a set of I2S_IN registers.
|
|
- clocks: PLL and leaf clocks used by audio ports
|
|
- assigned-clocks: PLL and leaf clocks
|
|
- assigned-clock-parents: parent clocks of the assigned clocks
|
|
(usually the PLL)
|
|
- assigned-clock-rates: List of clock frequencies of the
|
|
assigned clocks
|
|
- clock-names: names of 3 leaf clocks used by audio ports
|
|
Valid names are "ch0_audio", "ch1_audio", "ch2_audio"
|
|
- interrupts: audio DMA interrupt number
|
|
|
|
SSP Subnode properties:
|
|
- reg: The index of ssp port interface to use
|
|
Valid value are 0, 1, 2, or 3 (for spdif)
|
|
|
|
Example:
|
|
cygnus_audio: audio@180ae000 {
|
|
compatible = "brcm,cygnus-audio";
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
reg = <0x180ae000 0xafd>, <0x180aec00 0x1f8>;
|
|
reg-names = "aud", "i2s_in";
|
|
clocks = <&audiopll BCM_CYGNUS_AUDIOPLL_CH0>,
|
|
<&audiopll BCM_CYGNUS_AUDIOPLL_CH1>,
|
|
<&audiopll BCM_CYGNUS_AUDIOPLL_CH2>;
|
|
assigned-clocks = <&audiopll BCM_CYGNUS_AUDIOPLL>,
|
|
<&audiopll BCM_CYGNUS_AUDIOPLL_CH0>,
|
|
<&audiopll BCM_CYGNUS_AUDIOPLL_CH1>,
|
|
<&audiopll BCM_CYGNUS_AUDIOPLL_CH2>;
|
|
assigned-clock-parents = <&audiopll BCM_CYGNUS_AUDIOPLL>;
|
|
assigned-clock-rates = <1769470191>,
|
|
<0>,
|
|
<0>,
|
|
<0>;
|
|
clock-names = "ch0_audio", "ch1_audio", "ch2_audio";
|
|
interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
|
|
|
|
ssp0: ssp_port@0 {
|
|
reg = <0>;
|
|
status = "okay";
|
|
};
|
|
|
|
ssp1: ssp_port@1 {
|
|
reg = <1>;
|
|
status = "disabled";
|
|
};
|
|
|
|
ssp2: ssp_port@2 {
|
|
reg = <2>;
|
|
status = "disabled";
|
|
};
|
|
|
|
spdif: spdif_port@3 {
|
|
reg = <3>;
|
|
status = "disabled";
|
|
};
|
|
};
|