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Message-ID: <20210618204505.GA2835349@robh.at.kernel.org>
Date: Fri, 18 Jun 2021 14:45:05 -0600
From: Rob Herring <robh@...nel.org>
To: Aswath Govindraju <a-govindraju@...com>
Cc: Lokesh Vutla <lokeshvutla@...com>,
Vignesh Raghavendra <vigneshr@...com>,
Kishon Vijay Abraham I <kishon@...com>,
Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] dt-bindings: spi: omap-spi: Convert to json-schema
On Tue, Jun 08, 2021 at 10:50:09AM +0530, Aswath Govindraju wrote:
> Convert omap-spi dt-binding documentation from txt to yaml format.
>
> Signed-off-by: Aswath Govindraju <a-govindraju@...com>
> ---
>
> changes since v1:
> - split the series according to their respective trees
>
> link to v1:
> https://lore.kernel.org/patchwork/project/lkml/list/?series=502255
>
> .../devicetree/bindings/spi/omap-spi.txt | 48 -------
> .../devicetree/bindings/spi/omap-spi.yaml | 126 ++++++++++++++++++
> 2 files changed, 126 insertions(+), 48 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/spi/omap-spi.txt
> create mode 100644 Documentation/devicetree/bindings/spi/omap-spi.yaml
>
> diff --git a/Documentation/devicetree/bindings/spi/omap-spi.txt b/Documentation/devicetree/bindings/spi/omap-spi.txt
> deleted file mode 100644
> index 487208c256c0..000000000000
> --- a/Documentation/devicetree/bindings/spi/omap-spi.txt
> +++ /dev/null
> @@ -1,48 +0,0 @@
> -OMAP2+ McSPI device
> -
> -Required properties:
> -- compatible :
> - - "ti,am654-mcspi" for AM654.
> - - "ti,omap2-mcspi" for OMAP2 & OMAP3.
> - - "ti,omap4-mcspi" for OMAP4+.
> -- ti,spi-num-cs : Number of chipselect supported by the instance.
> -- ti,hwmods: Name of the hwmod associated to the McSPI
> -- ti,pindir-d0-out-d1-in: Select the D0 pin as output and D1 as
> - input. The default is D0 as input and
> - D1 as output.
> -
> -Optional properties:
> -- dmas: List of DMA specifiers with the controller specific format
> - as described in the generic DMA client binding. A tx and rx
> - specifier is required for each chip select.
> -- dma-names: List of DMA request names. These strings correspond
> - 1:1 with the DMA specifiers listed in dmas. The string naming
> - is to be "rxN" and "txN" for RX and TX requests,
> - respectively, where N equals the chip select number.
> -
> -Examples:
> -
> -[hwmod populated DMA resources]
> -
> -mcspi1: mcspi@1 {
> - #address-cells = <1>;
> - #size-cells = <0>;
> - compatible = "ti,omap4-mcspi";
> - ti,hwmods = "mcspi1";
> - ti,spi-num-cs = <4>;
> -};
> -
> -[generic DMA request binding]
> -
> -mcspi1: mcspi@1 {
> - #address-cells = <1>;
> - #size-cells = <0>;
> - compatible = "ti,omap4-mcspi";
> - ti,hwmods = "mcspi1";
> - ti,spi-num-cs = <2>;
> - dmas = <&edma 42
> - &edma 43
> - &edma 44
> - &edma 45>;
> - dma-names = "tx0", "rx0", "tx1", "rx1";
> -};
> diff --git a/Documentation/devicetree/bindings/spi/omap-spi.yaml b/Documentation/devicetree/bindings/spi/omap-spi.yaml
> new file mode 100644
> index 000000000000..cd20704f2edc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/omap-spi.yaml
> @@ -0,0 +1,126 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spi/omap-spi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: SPI controller bindings for OMAP and K3 SoCs
> +
> +maintainers:
> + - Mark Brown <broonie@...nel.org>
A TI person here please.
You need a ref to spi-controller.yaml
> +
> +properties:
> + compatible:
> + oneOf:
> + - items:
> + - enum:
> + - ti,am654-mcspi
> + - ti,am4372-mcspi
> + - const: ti,omap4-mcspi
> + - items:
> + - enum:
> + - ti,omap2-mcspi
> + - ti,omap4-mcspi
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> +
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
Don't need these, covered by spi-controller.yaml.
> +
> + power-domains:
> + maxItems: 1
> +
> + ti,spi-num-cs:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Number of chipselect supported by the instance.
> + minimum: 1
> + maximum: 4
> +
> + ti,hwmods:
> + $ref: /schemas/types.yaml#/definitions/string
> + description:
> + Must be "mcspi<n>", n being the instance number (1-based).
> + This property is applicable only on legacy platforms mainly omap2/3
> + and ti81xx and should not be used on other platforms.
> + deprecated: true
> +
> + ti,pindir-d0-out-d1-in:
> + description:
> + Select the D0 pin as output and D1 as input. The default is D0
> + as input and D1 as output.
> + type: boolean
> +
> + dmas:
> + description:
> + List of DMA specifiers with the controller specific format as
> + described in the generic DMA client binding. A tx and rx
> + specifier is required for each chip select.
> + minItems: 1
> + maxItems: 8
> +
> + dma-names:
> + description:
> + List of DMA request names. These strings correspond 1:1 with
> + the DMA sepecifiers listed in dmas. The string names is to be
> + "rxN" and "txN" for RX and TX requests, respectively. Where N
> + is the chip select number.
> + minItems: 1
> + maxItems: 8
> +
> +patternProperties:
> + "@[0-9a-f]+$":
> + type: object
> + description:
> + Flash devices are defined as a sub-node of the spi controller
Covered by spi-controller.yaml.
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> +
> +additionalProperties: false
> +
> +if:
> + properties:
> + compatible:
> + oneOf:
> + - const: ti,omap2-mcspi
> + - const: ti,omap4-mcspi
> +
> +then:
> + properties:
> + ti,hwmods:
> + items:
> + - pattern: "^mcspi([1-9])$"
> +
> +else:
> + properties:
> + ti,hwmods: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/soc/ti,sci_pm_domain.h>
> +
> + main_spi0: spi@...0000 {
Drop unused labels.
> + compatible = "ti,am654-mcspi","ti,omap4-mcspi";
> + reg = <0x2100000 0x400>;
> + interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&k3_clks 137 1>;
> + power-domains = <&k3_pds 137 TI_SCI_PD_EXCLUSIVE>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + dmas = <&main_udmap 0xc500>, <&main_udmap 0x4500>;
> + dma-names = "tx0", "rx0";
> + };
> --
> 2.17.1
>
>
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