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Date: Thu, 27 Feb 2020 16:05:08 -0600
From: Rob Herring <robh@...nel.org>
To: Andre Przywara <andre.przywara@....com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, Maxime Ripard <mripard@...nel.org>,
Robert Richter <rric@...nel.org>, soc@...nel.org,
Jon Loeliger <jdl@....com>,
Mark Langsdorf <mlangsdo@...hat.com>,
Eric Auger <eric.auger@...hat.com>,
Will Deacon <will@...nel.org>,
Catalin Marinas <catalin.marinas@....com>,
Jens Axboe <axboe@...nel.dk>
Subject: Re: [PATCH v2 06/13] dt-bindings: sata: Convert Calxeda SATA
controller to json-schema
On Thu, Feb 27, 2020 at 06:22:03PM +0000, Andre Przywara wrote:
> Convert the Calxeda Highbank SATA controller binding to DT schema format
> using json-schema.
>
> Signed-off-by: Andre Przywara <andre.przywara@....com>
> Cc: Jens Axboe <axboe@...nel.dk>
> ---
> .../devicetree/bindings/ata/sata_highbank.txt | 44 ---------
> .../bindings/ata/sata_highbank.yaml | 95 +++++++++++++++++++
> 2 files changed, 95 insertions(+), 44 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/ata/sata_highbank.txt
> create mode 100644 Documentation/devicetree/bindings/ata/sata_highbank.yaml
>
> diff --git a/Documentation/devicetree/bindings/ata/sata_highbank.txt b/Documentation/devicetree/bindings/ata/sata_highbank.txt
> deleted file mode 100644
> index aa83407cb7a4..000000000000
> --- a/Documentation/devicetree/bindings/ata/sata_highbank.txt
> +++ /dev/null
> @@ -1,44 +0,0 @@
> -* Calxeda AHCI SATA Controller
> -
> -SATA nodes are defined to describe on-chip Serial ATA controllers.
> -The Calxeda SATA controller mostly conforms to the AHCI interface
> -with some special extensions to add functionality.
> -Each SATA controller should have its own node.
> -
> -Required properties:
> -- compatible : compatible list, contains "calxeda,hb-ahci"
> -- interrupts : <interrupt mapping for SATA IRQ>
> -- reg : <registers mapping>
> -
> -Optional properties:
> -- dma-coherent : Present if dma operations are coherent
> -- calxeda,port-phys : phandle-combophy and lane assignment, which maps each
> - SATA port to a combophy and a lane within that
> - combophy
> -- calxeda,sgpio-gpio: phandle-gpio bank, bit offset, and default on or off,
> - which indicates that the driver supports SGPIO
> - indicator lights using the indicated GPIOs
> -- calxeda,led-order : a u32 array that map port numbers to offsets within the
> - SGPIO bitstream.
> -- calxeda,tx-atten : a u32 array that contains TX attenuation override
> - codes, one per port. The upper 3 bytes are always
> - 0 and thus ignored.
> -- calxeda,pre-clocks : a u32 that indicates the number of additional clock
> - cycles to transmit before sending an SGPIO pattern
> -- calxeda,post-clocks: a u32 that indicates the number of additional clock
> - cycles to transmit after sending an SGPIO pattern
> -
> -Example:
> - sata@...08000 {
> - compatible = "calxeda,hb-ahci";
> - reg = <0xffe08000 0x1000>;
> - interrupts = <115>;
> - dma-coherent;
> - calxeda,port-phys = <&combophy5 0 &combophy0 0 &combophy0 1
> - &combophy0 2 &combophy0 3>;
> - calxeda,sgpio-gpio =<&gpioh 5 1 &gpioh 6 1 &gpioh 7 1>;
> - calxeda,led-order = <4 0 1 2 3>;
> - calxeda,tx-atten = <0xff 22 0xff 0xff 23>;
> - calxeda,pre-clocks = <10>;
> - calxeda,post-clocks = <0>;
> - };
> diff --git a/Documentation/devicetree/bindings/ata/sata_highbank.yaml b/Documentation/devicetree/bindings/ata/sata_highbank.yaml
> new file mode 100644
> index 000000000000..6dcf91e1bac0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ata/sata_highbank.yaml
> @@ -0,0 +1,95 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/ata/sata_highbank.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Calxeda AHCI SATA Controller
> +
> +description: |
> + The Calxeda SATA controller mostly conforms to the AHCI interface
> + with some special extensions to add functionality, to map GPIOs for
> + activity LEDs and for mapping the ComboPHYs.
> +
> +maintainers:
> + - Andre Przywara <andre.przywara@....com>
> +
> +properties:
> + compatible:
> + const: calxeda,hb-ahci
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + dma-coherent: true
> +
> + calxeda,pre-clocks:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Indicates the number of additional clock cycles to transmit before
> + sending an SGPIO pattern.
> +
> + calxeda,post-clocks:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Indicates the number of additional clock cycles to transmit after
> + sending an SGPIO pattern.
> +
> + calxeda,led-order:
> + description: Maps port numbers to offsets within the SGPIO bitstream.
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32-array
> + - minItems: 1
> + maxItems: 8
> +
> + calxeda,port-phys:
> + description: |
> + phandle-combophy and lane assignment, which maps each SATA port to a
> + combophy and a lane within that combophy
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/phandle-array
> + - minItems: 1
> + maxItems: 8
> +
> + calxeda,tx-atten:
> + description: |
> + Contains TX attenuation override codes, one per port.
> + The upper 24 bits of each entry are always 0 and thus ignored.
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32-array
> + - minItems: 1
> + maxItems: 8
> +
> + calxeda,sgpio-gpio:
> + description: |
> + phandle-gpio bank, bit offset, and default on or off, which indicates
> + that the driver supports SGPIO indicator lights using the indicated
> + GPIOs.
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + sata@...08000 {
> + compatible = "calxeda,hb-ahci";
> + reg = <0xffe08000 0x1000>;
> + interrupts = <115>;
> + dma-coherent;
> + calxeda,port-phys = <&combophy5 0 &combophy0 0 &combophy0 1
> + &combophy0 2 &combophy0 3>;
> + calxeda,sgpio-gpio =<&gpioh 5 1 &gpioh 6 1 &gpioh 7 1>;
Need to fix the bracketing here too.
BTW, no system ever shipped with SGPIO support, so all this could just
be removed.
Rob
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