| Message ID | 20220307100428.2227511-3-codrin.ciubotariu@microchip.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add driver for SAMA7G5's PDMC | expand |
On 07/03/2022 11:04, Codrin Ciubotariu wrote: > Add DT bindings for the new Microchip PDMC embedded in sama7g5 SoCs. > > Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> > --- > > Changes in v2: > - renamed patch from 'ASoC: add DT bindings for Microchip PDMC' to > 'ASoC: dt-bindings: Document Microchip's PDMC'; > - renamed yaml file from 'mchp,pdmc.yaml' to 'microchip,pdmc.yaml'; > - used imperative mode in commit description; > - renamed mchp,pdmc.h to microchip,pdmc.h; > - fixed 'title' to represent HW; > - made 'compatible' first property; > - s/microhpone/microphone; > - none name in example set to 'sound'; > > .../bindings/sound/microchip,pdmc.yaml | 99 +++++++++++++++++++ > include/dt-bindings/sound/microchip,pdmc.h | 13 +++ > 2 files changed, 112 insertions(+) > create mode 100644 Documentation/devicetree/bindings/sound/microchip,pdmc.yaml > create mode 100644 include/dt-bindings/sound/microchip,pdmc.h > > diff --git a/Documentation/devicetree/bindings/sound/microchip,pdmc.yaml b/Documentation/devicetree/bindings/sound/microchip,pdmc.yaml > new file mode 100644 > index 000000000000..edfa3cbd318e > --- /dev/null > +++ b/Documentation/devicetree/bindings/sound/microchip,pdmc.yaml > @@ -0,0 +1,99 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/sound/microchip,pdmc.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Microchip Pulse Density Microphone Controller > + > +maintainers: > + - Codrin Ciubotariu <codrin.ciubotariu@microchip.com> > + > +description: > + The Microchip Pulse Density Microphone Controller (PDMC) interfaces up to 4 digital microphones > + having Pulse Density Modulated (PDM) outputs. This exceeds 80 characters. > + > +properties: > + compatible: > + const: microchip,sama7g5-pdmc > + > + "#sound-dai-cells": > + const: 0 > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + clocks: > + items: > + - description: Peripheral Bus Clock > + - description: Generic Clock > + > + clock-names: > + items: > + - const: pclk > + - const: gclk > + > + dmas: > + description: RX DMA Channel > + maxItems: 1 > + > + dma-names: > + const: rx > + > + microchip,mic-pos: > + description: | > + Position of PDM microphones on the DS line and the sampling edge (rising or falling) of the > + CLK line. A microphone is represented as a pair of DS line and the sampling edge. The first > + microphone is mapped to channel 0, the second to channel 1, etc. This is also too long, wrap at 80. > + $ref: /schemas/types.yaml#/definitions/uint32-matrix > + items: > + items: > + - description: value for DS line > + - description: value for sampling edge > + anyOf: > + - enum: > + - [0, 0] > + - [0, 1] > + - [1, 0] > + - [1, 1] > + minItems: 1 > + maxItems: 4 > + uniqueItems: true > + > +required: > + - compatible > + - "#sound-dai-cells" > + - reg > + - interrupts > + - clocks > + - clock-names > + - dmas > + - dma-names > + - microchip,mic-pos > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/clock/at91.h> > + #include <dt-bindings/dma/at91.h> > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/sound/microchip,pdmc.h> > + > + pdmc: sound@e1608000 { > + compatible = "microchip,sama7g5-pdmc"; > + #sound-dai-cells = <0>; > + reg = <0xe1608000 0x4000>; In DTS sources: compatible then reg. I mentioned it in previous version. Best regards, Krzysztof
On 07.03.2022 13:18, Krzysztof Kozlowski wrote: > On 07/03/2022 11:04, Codrin Ciubotariu wrote: >> +description: >> + The Microchip Pulse Density Microphone Controller (PDMC) interfaces up to 4 digital microphones >> + having Pulse Density Modulated (PDM) outputs. > > This exceeds 80 characters. I thought it was raised to 100. checkpatch doesn't report anything also. >> + microchip,mic-pos: >> + description: | >> + Position of PDM microphones on the DS line and the sampling edge (rising or falling) of the >> + CLK line. A microphone is represented as a pair of DS line and the sampling edge. The first >> + microphone is mapped to channel 0, the second to channel 1, etc. > > This is also too long, wrap at 80. ok... >> + pdmc: sound@e1608000 { >> + compatible = "microchip,sama7g5-pdmc"; >> + #sound-dai-cells = <0>; >> + reg = <0xe1608000 0x4000>; > > In DTS sources: compatible then reg. I mentioned it in previous version. right, forgot about reg, sorry. > Best regards, > Krzysztof Will send v3, thanks again for your review. Best regards, Codrin
On 07/03/2022 12:34, Codrin.Ciubotariu@microchip.com wrote: > On 07.03.2022 13:18, Krzysztof Kozlowski wrote: >> On 07/03/2022 11:04, Codrin Ciubotariu wrote: >>> +description: >>> + The Microchip Pulse Density Microphone Controller (PDMC) interfaces up to 4 digital microphones >>> + having Pulse Density Modulated (PDM) outputs. >> >> This exceeds 80 characters. > > I thought it was raised to 100. checkpatch doesn't report anything also. https://elixir.bootlin.com/linux/v5.17-rc7/source/Documentation/process/coding-style.rst#L104 The hard-constraint was lifted, but still 80 is preferred, unless readability is increased with 100. That's not the case - readability is the same, so keep 80. Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/sound/microchip,pdmc.yaml b/Documentation/devicetree/bindings/sound/microchip,pdmc.yaml new file mode 100644 index 000000000000..edfa3cbd318e --- /dev/null +++ b/Documentation/devicetree/bindings/sound/microchip,pdmc.yaml @@ -0,0 +1,99 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/microchip,pdmc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip Pulse Density Microphone Controller + +maintainers: + - Codrin Ciubotariu <codrin.ciubotariu@microchip.com> + +description: + The Microchip Pulse Density Microphone Controller (PDMC) interfaces up to 4 digital microphones + having Pulse Density Modulated (PDM) outputs. + +properties: + compatible: + const: microchip,sama7g5-pdmc + + "#sound-dai-cells": + const: 0 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Peripheral Bus Clock + - description: Generic Clock + + clock-names: + items: + - const: pclk + - const: gclk + + dmas: + description: RX DMA Channel + maxItems: 1 + + dma-names: + const: rx + + microchip,mic-pos: + description: | + Position of PDM microphones on the DS line and the sampling edge (rising or falling) of the + CLK line. A microphone is represented as a pair of DS line and the sampling edge. The first + microphone is mapped to channel 0, the second to channel 1, etc. + $ref: /schemas/types.yaml#/definitions/uint32-matrix + items: + items: + - description: value for DS line + - description: value for sampling edge + anyOf: + - enum: + - [0, 0] + - [0, 1] + - [1, 0] + - [1, 1] + minItems: 1 + maxItems: 4 + uniqueItems: true + +required: + - compatible + - "#sound-dai-cells" + - reg + - interrupts + - clocks + - clock-names + - dmas + - dma-names + - microchip,mic-pos + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/at91.h> + #include <dt-bindings/dma/at91.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/sound/microchip,pdmc.h> + + pdmc: sound@e1608000 { + compatible = "microchip,sama7g5-pdmc"; + #sound-dai-cells = <0>; + reg = <0xe1608000 0x4000>; + interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>; + dmas = <&dma0 AT91_XDMAC_DT_PERID(37)>; + dma-names = "rx"; + clocks = <&pmc PMC_TYPE_PERIPHERAL 68>, <&pmc PMC_TYPE_GCK 68>; + clock-names = "pclk", "gclk"; + microchip,mic-pos = <MCHP_PDMC_DS0 MCHP_PDMC_CLK_POSITIVE>, + <MCHP_PDMC_DS0 MCHP_PDMC_CLK_NEGATIVE>, + <MCHP_PDMC_DS1 MCHP_PDMC_CLK_POSITIVE>, + <MCHP_PDMC_DS1 MCHP_PDMC_CLK_NEGATIVE>; + }; diff --git a/include/dt-bindings/sound/microchip,pdmc.h b/include/dt-bindings/sound/microchip,pdmc.h new file mode 100644 index 000000000000..96cde94ce74f --- /dev/null +++ b/include/dt-bindings/sound/microchip,pdmc.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __DT_BINDINGS_MICROCHIP_PDMC_H__ +#define __DT_BINDINGS_MICROCHIP_PDMC_H__ + +/* PDM microphone's pin placement */ +#define MCHP_PDMC_DS0 0 +#define MCHP_PDMC_DS1 1 + +/* PDM microphone clock edge sampling */ +#define MCHP_PDMC_CLK_POSITIVE 0 +#define MCHP_PDMC_CLK_NEGATIVE 1 + +#endif /* __DT_BINDINGS_MICROCHIP_PDMC_H__ */
Add DT bindings for the new Microchip PDMC embedded in sama7g5 SoCs. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> --- Changes in v2: - renamed patch from 'ASoC: add DT bindings for Microchip PDMC' to 'ASoC: dt-bindings: Document Microchip's PDMC'; - renamed yaml file from 'mchp,pdmc.yaml' to 'microchip,pdmc.yaml'; - used imperative mode in commit description; - renamed mchp,pdmc.h to microchip,pdmc.h; - fixed 'title' to represent HW; - made 'compatible' first property; - s/microhpone/microphone; - none name in example set to 'sound'; .../bindings/sound/microchip,pdmc.yaml | 99 +++++++++++++++++++ include/dt-bindings/sound/microchip,pdmc.h | 13 +++ 2 files changed, 112 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/microchip,pdmc.yaml create mode 100644 include/dt-bindings/sound/microchip,pdmc.h