@@ -102,9 +102,11 @@ patternProperties:
items:
minimum: 0
maximum: 7
+ deprecated: true
st,adc-channel-names:
description: List of single-ended channel names.
+ deprecated: true
st,filter-order:
description: |
@@ -118,6 +120,12 @@ patternProperties:
"#io-channel-cells":
const: 1
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
st,adc-channel-types:
description: |
Single-ended channel input type.
@@ -128,6 +136,7 @@ patternProperties:
items:
enum: [ SPI_R, SPI_F, MANCH_R, MANCH_F ]
$ref: /schemas/types.yaml#/definitions/non-unique-string-array
+ deprecated: true
st,adc-channel-clk-src:
description: |
@@ -139,6 +148,7 @@ patternProperties:
items:
enum: [ CLKIN, CLKOUT, CLKOUT_F, CLKOUT_R ]
$ref: /schemas/types.yaml#/definitions/non-unique-string-array
+ deprecated: true
st,adc-alt-channel:
description:
@@ -147,6 +157,7 @@ patternProperties:
If not set, channel n is connected to SPI input n.
If set, channel n is connected to SPI input n + 1.
type: boolean
+ deprecated: true
st,filter0-sync:
description:
@@ -165,11 +176,60 @@ patternProperties:
- compatible
- reg
- interrupts
- - st,adc-channels
- - st,adc-channel-names
- st,filter-order
- "#io-channel-cells"
+ patternProperties:
+ "^channel@[0-7]$":
+ type: object
+ $ref: adc.yaml
+ unevaluatedProperties: false
+ description: Represents the external channels which are connected to the DFSDM.
+
+ properties:
+ reg:
+ maximum: 7
+
+ label:
+ description:
+ Unique name to identify which channel this is.
+
+ st,adc-channel-type:
+ description: |
+ Single-ended channel input type.
+ - "SPI_R": SPI with data on rising edge (default)
+ - "SPI_F": SPI with data on falling edge
+ - "MANCH_R": manchester codec, rising edge = logic 0, falling edge = logic 1
+ - "MANCH_F": manchester codec, rising edge = logic 1, falling edge = logic 0
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [ SPI_R, SPI_F, MANCH_R, MANCH_F ]
+
+ st,adc-channel-clk-src:
+ description: |
+ Conversion clock source.
+ - "CLKIN": external SPI clock (CLKIN x)
+ - "CLKOUT": internal SPI clock (CLKOUT) (default)
+ - "CLKOUT_F": internal SPI clock divided by 2 (falling edge).
+ - "CLKOUT_R": internal SPI clock divided by 2 (rising edge).
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [ CLKIN, CLKOUT, CLKOUT_F, CLKOUT_R ]
+
+ st,adc-alt-channel:
+ description:
+ Must be defined if two sigma delta modulators are
+ connected on same SPI input.
+ If not set, channel n is connected to SPI input n.
+ If set, channel n is connected to SPI input n + 1.
+ type: boolean
+
+ io-backends:
+ description:
+ Used to pipe external sigma delta modulator or internal ADC backend to DFSDM channel.
+ maxItems: 1
+
+ required:
+ - reg
+
allOf:
- if:
properties:
@@ -199,9 +259,19 @@ patternProperties:
description:
From common IIO binding. Used to pipe external sigma delta
modulator or internal ADC output to DFSDM channel.
+ deprecated: true
- required:
- - io-channels
+ if:
+ required:
+ - st,adc-channels
+ then:
+ required:
+ - io-channels
+
+ patternProperties:
+ "^channel@[0-7]$":
+ required:
+ - io-backends
- if:
properties:
@@ -298,6 +368,7 @@ examples:
#address-cells = <1>;
#size-cells = <0>;
+ // Example 1: Audio use case with generic binding
dfsdm0: filter@0 {
compatible = "st,stm32-dfsdm-dmic";
reg = <0>;
@@ -305,12 +376,18 @@ examples:
dmas = <&dmamux1 101 0x400 0x01>;
dma-names = "rx";
#io-channel-cells = <1>;
- st,adc-channels = <1>;
- st,adc-channel-names = "dmic0";
- st,adc-channel-types = "SPI_R";
- st,adc-channel-clk-src = "CLKOUT";
+ #address-cells = <1>;
+ #size-cells = <0>;
st,filter-order = <5>;
+ channel@1 {
+ reg = <1>;
+ label = "dmic0";
+ st,adc-channel-type = "SPI_R";
+ st,adc-channel-clk-src = "CLKOUT";
+ st,adc-alt-channel;
+ };
+
asoc_pdm0: dfsdm-dai {
compatible = "st,stm32h7-dfsdm-dai";
#sound-dai-cells = <0>;
@@ -318,19 +395,34 @@ examples:
};
};
- dfsdm_pdm1: filter@1 {
+ // Example 2: Analog use case with generic binding
+ dfsdm1: filter@1 {
compatible = "st,stm32-dfsdm-adc";
reg = <1>;
interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>;
dmas = <&dmamux1 102 0x400 0x01>;
dma-names = "rx";
- #io-channel-cells = <1>;
- st,adc-channels = <2 3>;
- st,adc-channel-names = "in2", "in3";
- st,adc-channel-types = "SPI_R", "SPI_R";
- st,adc-channel-clk-src = "CLKOUT_F", "CLKOUT_F";
- io-channels = <&sd_adc2 &sd_adc3>;
st,filter-order = <1>;
+ #io-channel-cells = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ channel@2 {
+ reg = <2>;
+ label = "in2";
+ st,adc-channel-type = "SPI_F";
+ st,adc-channel-clk-src = "CLKOUT";
+ st,adc-alt-channel;
+ io-backends = <&sd_adc2>;
+ };
+
+ channel@3 {
+ reg = <3>;
+ label = "in3";
+ st,adc-channel-type = "SPI_R";
+ st,adc-channel-clk-src = "CLKOUT";
+ io-backends = <&sd_adc3>;
+ };
};
};