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Message-ID: <20210315183051.ugvmz4zqrvuo6iqq@ti.com>
Date: Tue, 16 Mar 2021 00:00:52 +0530
From: Pratyush Yadav <p.yadav@...com>
To: Kuldeep Singh <kuldeep.singh@....com>
CC: <linux-spi@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, Mark Brown <broonie@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Vladimir Oltean <olteanv@...il.com>,
<linux-mtd@...ts.infradead.org>
Subject: Re: [PATCH] dt-bindings: spi: Convert Freescale DSPI to json schema
+Cc mtd list
Hi,
On 15/03/21 05:45PM, Kuldeep Singh wrote:
> Convert the Freescale DSPI binding to DT schema format using json-schema.
>
> Signed-off-by: Kuldeep Singh <kuldeep.singh@....com>
> ---
> Hi Rob,
> This patch is checked with following commands with no warnings observed.
> make distclean; make allmodconfig;
> make dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml;
> make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml
When I add the "fsl,spi-cs-sck-delay" property under the flash@0 node in
the example and run dt_binding_check, I see the below error:
/home/pratyush/src/linux/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.example.dt.yaml: flash@0: 'fsl,spi-cs-sck-delay' does not match any of the regexes: '^partition@', 'pinctrl-[0-9]+'
From schema: /home/pratyush/src/lin/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
I am trying to solve a similar problem for the Cadence QSPI controller
binding and I wonder what the best solution for this is. The obvious one
would be to add these properties to jedec,spi-nor.yaml. I haven't
managed to come up with any other solution to this problem.
Rob, all, any suggestions on how to best model this?
>
> .../bindings/spi/fsl,spi-fsl-dspi.yaml | 131 ++++++++++++++++++
> .../devicetree/bindings/spi/spi-fsl-dspi.txt | 65 ---------
> MAINTAINERS | 2 +-
> 3 files changed, 132 insertions(+), 66 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml
> delete mode 100644 Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
>
> diff --git a/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml b/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml
> new file mode 100644
> index 000000000000..15ffc83bdba6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml
> @@ -0,0 +1,131 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spi/fsl,spi-fsl-dspi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale DSPI Controller
> +
> +maintainers:
> + - Vladimir Oltean <olteanv@...il.com>
> +
> +allOf:
> + - $ref: "spi-controller.yaml#"
> +
> +properties:
> + compatible:
> + oneOf:
> + - enum:
> + - fsl,vf610-dspi
> + - fsl,ls1021a-v1.0-dspi
> + - fsl,ls1028a-dspi
> + - fsl,ls2085a-dspi
> + - fsl,lx2160a-dspi
> + - items:
> + - enum:
> + - fsl,ls1012a-dspi
> + - fsl,ls1028a-dspi
> + - fsl,ls1043a-dspi
> + - fsl,ls1046a-dspi
> + - fsl,ls1088a-dspi
> + - const: fsl,ls1021a-v1.0-dspi
> + - items:
> + - enum:
> + - fsl,ls2080a-dspi
> + - fsl,lx2160a-dspi
> + - const: fsl,ls2085a-dspi
> +
> + reg:
> + maxItems: 1
> + description: Offset and length of registers
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: SoC dspi clock
> +
> + clock-names:
> + items:
> + - const: dspi
> +
> + pinctrl-names:
> + minItems: 1
> + items:
> + - const: default
> + description:
> + Names for the pin configuration must be "default"
> +
> + dmas:
> + maxItems: 2
> +
> + dma-names:
> + items:
> + - const: tx
> + - const: rx
> +
> + spi-num-chipselects:
> + maxItems: 1
> + description: Number of the chipselect signals
> +
> + bus-num:
> + items:
> + - description: Slave chip chipselect signal number
> +
> +patternProperties:
> + "@[0-9a-f]+":
> + type: object
> +
> + properties:
> + fsl,spi-cs-sck-delay:
> + description:
> + Delay in nanoseconds between activating chip select and the start of
> + clock signal, at the start of a transfer.
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + fsl,spi-sck-cs-delay:
> + description:
> + Delay in nanoseconds between stopping the clock signal and
> + deactivating chip select, at the end of a transfer.
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> + - spi-num-chipselects
> +
> +unevaluatedProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/fsl,qoriq-clockgen.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + spi@...0000 {
> + compatible = "fsl,ls1028a-dspi", "fsl,ls1021a-v1.0-dspi";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x0 0x2100000 0x0 0x10000>;
> + interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
> + clock-names = "dspi";
> + clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL QORIQ_CLK_PLL_DIV(2)>;
> + dmas = <&edma0 0 62>, <&edma0 0 60>;
> + dma-names = "tx", "rx";
> + spi-num-chipselects = <4>;
> + little-endian;
> +
> + flash@0 {
> + compatible = "jedec,spi-nor";
> + spi-max-frequency = <10000000>;
> + reg = <0>;
> + };
> + };
> + };
> diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt b/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
> deleted file mode 100644
> index 30a79da9c039..000000000000
> --- a/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
> +++ /dev/null
> @@ -1,65 +0,0 @@
> -ARM Freescale DSPI controller
> -
> -Required properties:
> -- compatible : must be one of:
> - "fsl,vf610-dspi",
> - "fsl,ls1021a-v1.0-dspi",
> - "fsl,ls1012a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
> - "fsl,ls1028a-dspi",
> - "fsl,ls1043a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
> - "fsl,ls1046a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
> - "fsl,ls1088a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
> - "fsl,ls2080a-dspi" (optionally followed by "fsl,ls2085a-dspi"),
> - "fsl,ls2085a-dspi",
> - "fsl,lx2160a-dspi",
> -- reg : Offset and length of the register set for the device
> -- interrupts : Should contain SPI controller interrupt
> -- clocks: from common clock binding: handle to dspi clock.
> -- clock-names: from common clock binding: Shall be "dspi".
> -- pinctrl-0: pin control group to be used for this controller.
> -- pinctrl-names: must contain a "default" entry.
> -- spi-num-chipselects : the number of the chipselect signals.
> -
> -Optional property:
> -- big-endian: If present the dspi device's registers are implemented
> - in big endian mode.
> -- bus-num : the slave chip chipselect signal number.
> -
> -Optional SPI slave node properties:
> -- fsl,spi-cs-sck-delay: a delay in nanoseconds between activating chip
> - select and the start of clock signal, at the start of a transfer.
> -- fsl,spi-sck-cs-delay: a delay in nanoseconds between stopping the clock
> - signal and deactivating chip select, at the end of a transfer.
> -
> -Example:
> -
> -dspi0@...2c000 {
> - #address-cells = <1>;
> - #size-cells = <0>;
> - compatible = "fsl,vf610-dspi";
> - reg = <0x4002c000 0x1000>;
> - interrupts = <0 67 0x04>;
> - clocks = <&clks VF610_CLK_DSPI0>;
> - clock-names = "dspi";
> - spi-num-chipselects = <5>;
> - bus-num = <0>;
> - pinctrl-names = "default";
> - pinctrl-0 = <&pinctrl_dspi0_1>;
> - big-endian;
> -
> - sflash: at26df081a@0 {
> - #address-cells = <1>;
> - #size-cells = <1>;
> - compatible = "atmel,at26df081a";
> - spi-max-frequency = <16000000>;
> - spi-cpol;
> - spi-cpha;
> - reg = <0>;
> - linux,modalias = "m25p80";
> - modal = "at26df081a";
> - fsl,spi-cs-sck-delay = <100>;
> - fsl,spi-sck-cs-delay = <50>;
> - };
> -};
> -
> -
> diff --git a/MAINTAINERS b/MAINTAINERS
> index d92f85ca831d..e2c5b7367db9 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -7060,7 +7060,7 @@ FREESCALE DSPI DRIVER
> M: Vladimir Oltean <olteanv@...il.com>
> L: linux-spi@...r.kernel.org
> S: Maintained
> -F: Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
> +F: Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml
> F: drivers/spi/spi-fsl-dspi.c
> F: include/linux/spi/spi-fsl-dspi.h
>
> --
> 2.17.1
>
--
Regards,
Pratyush Yadav
Texas Instruments Inc.
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