On Mon, Apr 22, 2024 at 01:48:14PM +0800, Shengjiu Wang wrote: > Convert the fsl,ssi binding to YAML. > > Add below compatible strings which were not listed > in document: > > fsl,imx50-ssi > fsl,imx53-ssi > fsl,imx25-ssi > fsl,imx27-ssi > fsl,imx6q-ssi > fsl,imx6sl-ssi > fsl,imx6sx-ssi > > Add below fsl,mode strings which were not listed. > > i2s-slave > i2s-master > lj-slave > lj-master > rj-slave > rj-master > > Add 'ac97-gpios' property which were not listed. > Then dtbs_check can pass. > > And remove the 'codec' description which should be > in the 'codec' binding doc. > > Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx> > --- > changes in v2: > - change fallback string to const. > - add dai-common.yaml > - add ac97-gpios property > > .../devicetree/bindings/sound/fsl,ssi.txt | 87 -------- > .../devicetree/bindings/sound/fsl,ssi.yaml | 192 ++++++++++++++++++ > 2 files changed, 192 insertions(+), 87 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/sound/fsl,ssi.txt > create mode 100644 Documentation/devicetree/bindings/sound/fsl,ssi.yaml > > diff --git a/Documentation/devicetree/bindings/sound/fsl,ssi.txt b/Documentation/devicetree/bindings/sound/fsl,ssi.txt > deleted file mode 100644 > index 7e15a85cecd2..000000000000 > --- a/Documentation/devicetree/bindings/sound/fsl,ssi.txt > +++ /dev/null > @@ -1,87 +0,0 @@ > -Freescale Synchronous Serial Interface > - > -The SSI is a serial device that communicates with audio codecs. It can > -be programmed in AC97, I2S, left-justified, or right-justified modes. > - > -Required properties: > -- compatible: Compatible list, should contain one of the following > - compatibles: > - fsl,mpc8610-ssi > - fsl,imx51-ssi > - fsl,imx35-ssi > - fsl,imx21-ssi > -- cell-index: The SSI, <0> = SSI1, <1> = SSI2, and so on. > -- reg: Offset and length of the register set for the device. > -- interrupts: <a b> where a is the interrupt number and b is a > - field that represents an encoding of the sense and > - level information for the interrupt. This should be > - encoded based on the information in section 2) > - depending on the type of interrupt controller you > - have. > -- fsl,fifo-depth: The number of elements in the transmit and receive FIFOs. > - This number is the maximum allowed value for SFCSR[TFWM0]. > - - clocks: "ipg" - Required clock for the SSI unit > - "baud" - Required clock for SSI master mode. Otherwise this > - clock is not used > - > -Required are also ac97 link bindings if ac97 is used. See > -Documentation/devicetree/bindings/sound/soc-ac97link.txt for the necessary > -bindings. > - > -Optional properties: > -- codec-handle: Phandle to a 'codec' node that defines an audio > - codec connected to this SSI. This node is typically > - a child of an I2C or other control node. > -- fsl,fiq-stream-filter: Bool property. Disabled DMA and use FIQ instead to > - filter the codec stream. This is necessary for some boards > - where an incompatible codec is connected to this SSI, e.g. > - on pca100 and pcm043. > -- dmas: Generic dma devicetree binding as described in > - Documentation/devicetree/bindings/dma/dma.txt. > -- dma-names: Two dmas have to be defined, "tx" and "rx", if fsl,imx-fiq > - is not defined. > -- fsl,mode: The operating mode for the AC97 interface only. > - "ac97-slave" - AC97 mode, SSI is clock slave > - "ac97-master" - AC97 mode, SSI is clock master > -- fsl,ssi-asynchronous: > - If specified, the SSI is to be programmed in asynchronous > - mode. In this mode, pins SRCK, STCK, SRFS, and STFS must > - all be connected to valid signals. In synchronous mode, > - SRCK and SRFS are ignored. Asynchronous mode allows > - playback and capture to use different sample sizes and > - sample rates. Some drivers may require that SRCK and STCK > - be connected together, and SRFS and STFS be connected > - together. This would still allow different sample sizes, > - but not different sample rates. > -- fsl,playback-dma: Phandle to a node for the DMA channel to use for > - playback of audio. This is typically dictated by SOC > - design. See the notes below. > - Only used on Power Architecture. > -- fsl,capture-dma: Phandle to a node for the DMA channel to use for > - capture (recording) of audio. This is typically dictated > - by SOC design. See the notes below. > - Only used on Power Architecture. > - > -Child 'codec' node required properties: > -- compatible: Compatible list, contains the name of the codec > - > -Child 'codec' node optional properties: > -- clock-frequency: The frequency of the input clock, which typically comes > - from an on-board dedicated oscillator. > - > -Notes on fsl,playback-dma and fsl,capture-dma: > - > -On SOCs that have an SSI, specific DMA channels are hard-wired for playback > -and capture. On the MPC8610, for example, SSI1 must use DMA channel 0 for > -playback and DMA channel 1 for capture. SSI2 must use DMA channel 2 for > -playback and DMA channel 3 for capture. The developer can choose which > -DMA controller to use, but the channels themselves are hard-wired. The > -purpose of these two properties is to represent this hardware design. > - > -The device tree nodes for the DMA channels that are referenced by > -"fsl,playback-dma" and "fsl,capture-dma" must be marked as compatible with > -"fsl,ssi-dma-channel". The SOC-specific compatible string (e.g. > -"fsl,mpc8610-dma-channel") can remain. If these nodes are left as > -"fsl,elo-dma-channel" or "fsl,eloplus-dma-channel", then the generic Elo DMA > -drivers (fsldma) will attempt to use them, and it will conflict with the > -sound drivers. > diff --git a/Documentation/devicetree/bindings/sound/fsl,ssi.yaml b/Documentation/devicetree/bindings/sound/fsl,ssi.yaml > new file mode 100644 > index 000000000000..d22911b0e9ef > --- /dev/null > +++ b/Documentation/devicetree/bindings/sound/fsl,ssi.yaml > @@ -0,0 +1,192 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/sound/fsl,ssi.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Freescale Synchronous Serial Interface > + > +maintainers: > + - Shengjiu Wang <shengjiu.wang@xxxxxxx> > + > +description: > + Notes on fsl,playback-dma and fsl,capture-dma > + On SOCs that have an SSI, specific DMA channels are hard-wired for playback > + and capture. On the MPC8610, for example, SSI1 must use DMA channel 0 for > + playback and DMA channel 1 for capture. SSI2 must use DMA channel 2 for > + playback and DMA channel 3 for capture. The developer can choose which > + DMA controller to use, but the channels themselves are hard-wired. The > + purpose of these two properties is to represent this hardware design. > + > + The device tree nodes for the DMA channels that are referenced by > + "fsl,playback-dma" and "fsl,capture-dma" must be marked as compatible with > + "fsl,ssi-dma-channel". The SOC-specific compatible string (e.g. > + "fsl,mpc8610-dma-channel") can remain. If these nodes are left as > + "fsl,elo-dma-channel" or "fsl,eloplus-dma-channel", then the generic Elo DMA > + drivers (fsldma) will attempt to use them, and it will conflict with the > + sound drivers. > + > +properties: > + compatible: > + oneOf: > + - items: > + - enum: > + - fsl,imx50-ssi > + - fsl,imx53-ssi > + - enum: > + - fsl,imx51-ssi const > + - const: fsl,imx21-ssi > + - items: > + - enum: > + - fsl,imx25-ssi > + - fsl,imx27-ssi > + - fsl,imx35-ssi > + - fsl,imx51-ssi > + - fsl,imx6q-ssi > + - fsl,imx6sl-ssi > + - fsl,imx6sx-ssi > + - enum: > + - fsl,imx21-ssi > + - fsl,imx51-ssi Fallbacks cannot be enum's. You need to split this into 2. Also, there's no valid entry for "fsl,imx21-ssi". It also doesn't make sense that sometimes mx21 is a fallback of mx51, but then sometimes the last fallback is mx51. > + - items: > + - const: fsl,mpc8610-ssi > + > + cell-index: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2] > + description: The SSI index > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + fsl,fifo-depth: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: > + The number of elements in the transmit and receive FIFOs. > + This number is the maximum allowed value for SFCSR[TFWM0]. Ordering is standard properties first (like 'clocks') and then vendor specific properties last. You need some constraints on the fsl,fifo-depth values. > + > + clocks: > + items: > + - description: The ipg clock for register access > + - description: clock for SSI master mode > + minItems: 1 > + > + clock-names: > + items: > + - const: ipg > + - const: baud > + minItems: 1 > + > + dmas: > + oneOf: > + - items: > + - description: DMA controller phandle and request line for RX > + - description: DMA controller phandle and request line for TX > + - items: > + - description: DMA controller phandle and request line for RX0 > + - description: DMA controller phandle and request line for TX0 > + - description: DMA controller phandle and request line for RX1 > + - description: DMA controller phandle and request line for TX1 > + > + dma-names: > + oneOf: > + - items: > + - const: rx > + - const: tx > + - items: > + - const: rx0 > + - const: tx0 > + - const: rx1 > + - const: tx1 > + > + codec-handle: > + $ref: /schemas/types.yaml#/definitions/phandle > + description: > + Phandle to a 'codec' node that defines an audio > + codec connected to this SSI. This node is typically > + a child of an I2C or other control node. > + > + fsl,fiq-stream-filter: > + type: boolean > + description: > + Disabled DMA and use FIQ instead to filter the codec stream. > + This is necessary for some boards where an incompatible codec > + is connected to this SSI, e.g. on pca100 and pcm043. > + > + fsl,mode: > + $ref: /schemas/types.yaml#/definitions/string > + enum: [ ac97-slave, ac97-master, i2s-slave, i2s-master, > + lj-slave, lj-master, rj-slave, rj-master ] > + description: | > + "ac97-slave" - AC97 mode, SSI is clock slave > + "ac97-master" - AC97 mode, SSI is clock master > + "i2s-slave" - I2S mode, SSI is clock slave > + "i2s-master" - I2S mode, SSI is clock master > + "lj-slave" - Left justified mode, SSI is clock slave > + "lj-master" - Left justified mode, SSI is clock master > + "rj-slave" - Right justified mode, SSI is clock slave > + "rj-master" - Right justified mode, SSI is clock master > + > + fsl,ssi-asynchronous: > + type: boolean > + description: If specified, the SSI is to be programmed in asynchronous > + mode. In this mode, pins SRCK, STCK, SRFS, and STFS must > + all be connected to valid signals. In synchronous mode, > + SRCK and SRFS are ignored. Asynchronous mode allows > + playback and capture to use different sample sizes and > + sample rates. Some drivers may require that SRCK and STCK > + be connected together, and SRFS and STFS be connected > + together. This would still allow different sample sizes, > + but not different sample rates. > + > + fsl,playback-dma: > + $ref: /schemas/types.yaml#/definitions/phandle > + description: Phandle to a node for the DMA channel to use for > + playback of audio. This is typically dictated by SOC > + design. Only used on Power Architecture. > + > + fsl,capture-dma: > + $ref: /schemas/types.yaml#/definitions/phandle > + description: Phandle to a node for the DMA channel to use for > + capture (recording) of audio. This is typically dictated > + by SOC design. Only used on Power Architecture. > + > + ac97-gpios: > + $ref: /schemas/types.yaml#/definitions/phandle-array > + description: Please refer to soc-ac97link.txt > + > + "#sound-dai-cells": > + const: 0 > + description: optional, some dts node didn't add it. > + > +required: > + - compatible > + - reg > + - interrupts > + - fsl,fifo-depth > + > +allOf: > + - $ref: dai-common.yaml# > + > +unevaluatedProperties: false > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/clock/imx6qdl-clock.h> > + ssi1: ssi@2028000 { Drop unused labels. > + compatible = "fsl,imx6q-ssi", > + "fsl,imx51-ssi"; This fits on 1 line. > + reg = <0x02028000 0x4000>; > + interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>; > + clocks = <&clks IMX6QDL_CLK_SSI1_IPG>, > + <&clks IMX6QDL_CLK_SSI1>; > + clock-names = "ipg", "baud"; > + dmas = <&sdma 37 1 0>, <&sdma 38 1 0>; > + dma-names = "rx", "tx"; > + #sound-dai-cells = <0>; > + fsl,fifo-depth = <15>; > + }; > -- > 2.34.1 >
