| Message ID | 20241008-wip-bl-ad3552r-axi-v0-iio-testing-v5-4-3d410944a63d@baylibre.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
| Series | iio: add support for the ad3552r AXI DAC IP | expand |
On Tue, 08 Oct 2024 17:43:36 +0200, Angelo Dureghello wrote: > From: Angelo Dureghello <adureghello@baylibre.com> > > Add a new compatible and related bindigns for the fpga-based > "ad3552r" AXI IP core, a variant of the generic AXI DAC IP. > > The AXI "ad3552r" IP is a very similar HDL (fpga) variant of the > generic AXI "DAC" IP, intended to control ad3552r and similar chips, > mainly to reach high speed transfer rates using a QSPI DDR > (dobule-data-rate) interface. > > The ad3552r device is defined as a child of the AXI DAC, that in > this case is acting as an SPI controller. > > Signed-off-by: Angelo Dureghello <adureghello@baylibre.com> > --- > .../devicetree/bindings/iio/dac/adi,axi-dac.yaml | 56 ++++++++++++++++++++-- > 1 file changed, 53 insertions(+), 3 deletions(-) > My bot found errors running 'make dt_binding_check' on your patch: yamllint warnings/errors: dtschema/dtc warnings/errors: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.example.dtb: dac@0: spi-max-frequency: 66000000 is greater than the maximum of 30000000 from schema $id: http://devicetree.org/schemas/iio/dac/adi,ad3552r.yaml# doc reference errors (make refcheckdocs): See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20241008-wip-bl-ad3552r-axi-v0-iio-testing-v5-4-3d410944a63d@baylibre.com The base for the series is generally the latest rc1. A different dependency should be noted in *this* patch. If you already ran 'make dt_binding_check' and didn't see the above error(s), then make sure 'yamllint' is installed and dt-schema is up to date: pip3 install dtschema --upgrade Please check and re-submit after running the above command yourself. Note that DT_SCHEMA_FILES can be set to your schema file to speed up checking your schema. However, it must be unset to test all examples with your schema.
On Tue, 08 Oct 2024 12:22:06 -0500 "Rob Herring (Arm)" <robh@kernel.org> wrote: > On Tue, 08 Oct 2024 17:43:36 +0200, Angelo Dureghello wrote: > > From: Angelo Dureghello <adureghello@baylibre.com> > > > > Add a new compatible and related bindigns for the fpga-based > > "ad3552r" AXI IP core, a variant of the generic AXI DAC IP. > > > > The AXI "ad3552r" IP is a very similar HDL (fpga) variant of the > > generic AXI "DAC" IP, intended to control ad3552r and similar chips, > > mainly to reach high speed transfer rates using a QSPI DDR > > (dobule-data-rate) interface. > > > > The ad3552r device is defined as a child of the AXI DAC, that in > > this case is acting as an SPI controller. > > > > Signed-off-by: Angelo Dureghello <adureghello@baylibre.com> > > --- > > .../devicetree/bindings/iio/dac/adi,axi-dac.yaml | 56 ++++++++++++++++++++-- > > 1 file changed, 53 insertions(+), 3 deletions(-) > > > > My bot found errors running 'make dt_binding_check' on your patch: For the record, this is due to me having already picked up a fix on this frequency range into the togreg branch of iio.git So wrong base tree for the test run. Jonathan > > yamllint warnings/errors: > > dtschema/dtc warnings/errors: > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.example.dtb: dac@0: spi-max-frequency: 66000000 is greater than the maximum of 30000000 > from schema $id: http://devicetree.org/schemas/iio/dac/adi,ad3552r.yaml# > > doc reference errors (make refcheckdocs): > > See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20241008-wip-bl-ad3552r-axi-v0-iio-testing-v5-4-3d410944a63d@baylibre.com > > The base for the series is generally the latest rc1. A different dependency > should be noted in *this* patch. > > If you already ran 'make dt_binding_check' and didn't see the above > error(s), then make sure 'yamllint' is installed and dt-schema is up to > date: > > pip3 install dtschema --upgrade > > Please check and re-submit after running the above command yourself. Note > that DT_SCHEMA_FILES can be set to your schema file to speed up checking > your schema. However, it must be unset to test all examples with your schema. >
On Tue, 08 Oct 2024 17:43:36 +0200 Angelo Dureghello <adureghello@baylibre.com> wrote: > From: Angelo Dureghello <adureghello@baylibre.com> > > Add a new compatible and related bindigns for the fpga-based > "ad3552r" AXI IP core, a variant of the generic AXI DAC IP. > > The AXI "ad3552r" IP is a very similar HDL (fpga) variant of the > generic AXI "DAC" IP, intended to control ad3552r and similar chips, > mainly to reach high speed transfer rates using a QSPI DDR > (dobule-data-rate) interface. > > The ad3552r device is defined as a child of the AXI DAC, that in > this case is acting as an SPI controller. > Hi Angelo, If this goes to a v6, I'd suggest adding a very brief statement that #io-backend is present because it is possible (in theory anyway) to use a separate controller for the control path than that used for the datapath. So a one line summary of that long discussion from an earlier version! Otherwise this LGTM. Thanks, Jonathan
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml b/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml index a55e9bfc66d7..2b7e16717219 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml @@ -19,11 +19,13 @@ description: | memory via DMA into the DAC. https://wiki.analog.com/resources/fpga/docs/axi_dac_ip + https://analogdevicesinc.github.io/hdl/library/axi_ad3552r/index.html properties: compatible: enum: - adi,axi-dac-9.1.b + - adi,axi-ad3552r reg: maxItems: 1 @@ -36,7 +38,14 @@ properties: - const: tx clocks: - maxItems: 1 + minItems: 1 + maxItems: 2 + + clock-names: + minItems: 1 + items: + - const: s_axi_aclk + - const: dac_clk '#io-backend-cells': const: 0 @@ -47,7 +56,16 @@ required: - reg - clocks -additionalProperties: false +allOf: + - if: + properties: + compatible: + contains: + const: adi,axi-ad3552r + then: + $ref: /schemas/spi/spi-controller.yaml# + +unevaluatedProperties: false examples: - | @@ -57,6 +75,38 @@ examples: dmas = <&tx_dma 0>; dma-names = "tx"; #io-backend-cells = <0>; - clocks = <&axi_clk>; + clocks = <&clkc 15>; + clock-names = "s_axi_aclk"; + }; + + - | + #include <dt-bindings/gpio/gpio.h> + axi_dac: spi@44a70000 { + compatible = "adi,axi-ad3552r"; + reg = <0x44a70000 0x1000>; + dmas = <&dac_tx_dma 0>; + dma-names = "tx"; + #io-backend-cells = <0>; + clocks = <&clkc 15>, <&ref_clk>; + clock-names = "s_axi_aclk", "dac_clk"; + + #address-cells = <1>; + #size-cells = <0>; + + dac@0 { + compatible = "adi,ad3552r"; + reg = <0>; + reset-gpios = <&gpio0 92 GPIO_ACTIVE_HIGH>; + io-backends = <&axi_dac>; + spi-max-frequency = <66000000>; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + adi,output-range-microvolt = <(-10000000) (10000000)>; + }; + }; }; ...