170 lines
4.6 KiB
Plaintext
170 lines
4.6 KiB
Plaintext
STMicroelectronics sti ASoC cards
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The sti ASoC Sound Card can be used, for all sti SoCs using internal sti-sas
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codec or external codecs.
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sti sound drivers allows to expose sti SoC audio interface through the
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generic ASoC simple card. For details about sound card declaration please refer to
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Documentation/devicetree/bindings/sound/simple-card.txt.
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1) sti-uniperiph-dai: audio dai device.
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---------------------------------------
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Required properties:
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- compatible: "st,stih407-uni-player-hdmi", "st,stih407-uni-player-pcm-out",
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"st,stih407-uni-player-dac", "st,stih407-uni-player-spdif",
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"st,stih407-uni-reader-pcm_in", "st,stih407-uni-reader-hdmi",
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- st,syscfg: phandle to boot-device system configuration registers
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- clock-names: name of the clocks listed in clocks property in the same order
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- reg: CPU DAI IP Base address and size entries, listed in same
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order than the CPU_DAI properties.
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- reg-names: names of the mapped memory regions listed in regs property in
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the same order.
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- interrupts: CPU_DAI interrupt line, listed in the same order than the
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CPU_DAI properties.
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- dma: CPU_DAI DMA controller phandle and DMA request line, listed in the same
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order than the CPU_DAI properties.
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- dma-names: identifier string for each DMA request line in the dmas property.
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"tx" for "st,sti-uni-player" compatibility
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"rx" for "st,sti-uni-reader" compatibility
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Required properties ("st,sti-uni-player" compatibility only):
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- clocks: CPU_DAI IP clock source, listed in the same order than the
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CPU_DAI properties.
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Optional properties:
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- pinctrl-0: defined for CPU_DAI@1 and CPU_DAI@4 to describe I2S PIOs for
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external codecs connection.
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- pinctrl-names: should contain only one value - "default".
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- st,tdm-mode: to declare to set TDM mode for unireader and uniplayer IPs.
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Only compartible with IPs in charge of the external I2S/TDM bus.
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Should be declared depending on associated codec.
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Example:
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sti_uni_player1: sti-uni-player@0x8D81000 {
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compatible = "st,stih407-uni-player-hdmi";
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status = "okay";
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#sound-dai-cells = <0>;
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st,syscfg = <&syscfg_core>;
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clocks = <&clk_s_d0_flexgen CLK_PCM_1>;
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reg = <0x8D81000 0x158>;
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interrupts = <GIC_SPI 85 IRQ_TYPE_NONE>;
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dmas = <&fdma0 3 0 1>;
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dma-names = "tx";
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st,tdm-mode = <1>;
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};
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sti_uni_player2: sti-uni-player@0x8D82000 {
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compatible = "st,stih407-uni-player-pcm-out";
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status = "okay";
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#sound-dai-cells = <0>;
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st,syscfg = <&syscfg_core>;
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clocks = <&clk_s_d0_flexgen CLK_PCM_2>;
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reg = <0x8D82000 0x158>;
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interrupts = <GIC_SPI 86 IRQ_TYPE_NONE>;
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dmas = <&fdma0 4 0 1>;
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dma-names = "tx";
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};
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sti_uni_player3: sti-uni-player@0x8D85000 {
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compatible = "st,stih407-uni-player-spdif";
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status = "okay";
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#sound-dai-cells = <0>;
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st,syscfg = <&syscfg_core>;
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clocks = <&clk_s_d0_flexgen CLK_SPDIFF>;
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reg = <0x8D85000 0x158>;
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interrupts = <GIC_SPI 89 IRQ_TYPE_NONE>;
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dmas = <&fdma0 7 0 1>;
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dma-names = "tx";
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};
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sti_uni_reader1: sti-uni-reader@0x8D84000 {
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compatible = "st,stih407-uni-reader-hdmi";
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status = "disabled";
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#sound-dai-cells = <0>;
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st,syscfg = <&syscfg_core>;
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reg = <0x8D84000 0x158>;
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interrupts = <GIC_SPI 88 IRQ_TYPE_NONE>;
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dmas = <&fdma0 6 0 1>;
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dma-names = "rx";
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};
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2) sti-sas-codec: internal audio codec IPs driver
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-------------------------------------------------
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Required properties:
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- compatible: "st,sti<chip>-sas-codec" .
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Should be chip "st,stih416-sas-codec" or "st,stih407-sas-codec"
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- st,syscfg: phandle to boot-device system configuration registers.
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- pinctrl-0: SPDIF PIO description.
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- pinctrl-names: should contain only one value - "default".
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Example:
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sti_sas_codec: sti-sas-codec {
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compatible = "st,stih407-sas-codec";
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#sound-dai-cells = <1>;
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st,reg_audio = <&syscfg_core>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_spdif_out >;
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};
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Example of audio card declaration:
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sound {
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compatible = "simple-audio-card";
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simple-audio-card,name = "sti audio card";
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status = "okay";
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simple-audio-card,dai-link@0 {
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/* DAC */
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format = "i2s";
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dai-tdm-slot-width = <32>;
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cpu {
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sound-dai = <&sti_uni_player2>;
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};
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codec {
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sound-dai = <&sti_sasg_codec 1>;
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};
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};
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simple-audio-card,dai-link@1 {
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/* SPDIF */
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format = "left_j";
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cpu {
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sound-dai = <&sti_uni_player3>;
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};
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codec {
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sound-dai = <&sti_sasg_codec 0>;
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};
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};
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simple-audio-card,dai-link@2 {
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/* TDM playback */
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format = "left_j";
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frame-inversion = <1>;
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cpu {
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sound-dai = <&sti_uni_player1>;
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dai-tdm-slot-num = <16>;
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dai-tdm-slot-width = <16>;
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dai-tdm-slot-tx-mask =
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<1 1 1 1 0 0 0 0 0 0 1 1 0 0 1 1>;
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};
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codec {
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sound-dai = <&sti_sasg_codec 3>;
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};
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};
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};
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