mirror of https://github.com/torvalds/linux.git
dt-bindings: convert ata/cortina,gemini-sata-bridge to yaml
This patch converts ata/cortina,gemini-sata-bridge binding to yaml Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220211120157.3385145-1-clabbe@baylibre.com
This commit is contained in:
Corentin Labbe
Rob Herring
parent
44c75c9e3d
commit
5d16dcd252
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* Cortina Systems Gemini SATA Bridge
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The Gemini SATA bridge in a SoC-internal PATA to SATA bridge that
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takes two Faraday Technology FTIDE010 PATA controllers and bridges
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them in different configurations to two SATA ports.
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Required properties:
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- compatible: should be
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"cortina,gemini-sata-bridge"
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- reg: registers and size for the block
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- resets: phandles to the reset lines for both SATA bridges
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- reset-names: must be "sata0", "sata1"
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- clocks: phandles to the compulsory peripheral clocks
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- clock-names: must be "SATA0_PCLK", "SATA1_PCLK"
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- syscon: a phandle to the global Gemini system controller
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- cortina,gemini-ata-muxmode: tell the desired multiplexing mode for
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the ATA controller and SATA bridges. Values 0..3:
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Mode 0: ata0 master <-> sata0
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ata1 master <-> sata1
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ata0 slave interface brought out on IDE pads
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Mode 1: ata0 master <-> sata0
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ata1 master <-> sata1
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ata1 slave interface brought out on IDE pads
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Mode 2: ata1 master <-> sata1
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ata1 slave <-> sata0
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ata0 master and slave interfaces brought out
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on IDE pads
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Mode 3: ata0 master <-> sata0
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ata0 slave <-> sata1
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ata1 master and slave interfaces brought out
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on IDE pads
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Optional boolean properties:
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- cortina,gemini-enable-ide-pins: enables the PATA to IDE connection.
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The muxmode setting decides whether ATA0 or ATA1 is brought out,
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and whether master, slave or both interfaces get brought out.
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- cortina,gemini-enable-sata-bridge: enables the PATA to SATA bridge
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inside the Gemnini SoC. The Muxmode decides what PATA blocks will
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be muxed out and how.
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Example:
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sata: sata@46000000 {
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compatible = "cortina,gemini-sata-bridge";
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reg = <0x46000000 0x100>;
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resets = <&rcon 26>, <&rcon 27>;
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reset-names = "sata0", "sata1";
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clocks = <&gcc GEMINI_CLK_GATE_SATA0>,
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<&gcc GEMINI_CLK_GATE_SATA1>;
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clock-names = "SATA0_PCLK", "SATA1_PCLK";
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syscon = <&syscon>;
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cortina,gemini-ata-muxmode = <3>;
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cortina,gemini-enable-ide-pins;
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cortina,gemini-enable-sata-bridge;
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};
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@ -0,0 +1,109 @@
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/ata/cortina,gemini-sata-bridge.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Cortina Systems Gemini SATA Bridge
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maintainers:
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- Linus Walleij <linus.walleij@linaro.org>
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description: |
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The Gemini SATA bridge in a SoC-internal PATA to SATA bridge that
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takes two Faraday Technology FTIDE010 PATA controllers and bridges
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them in different configurations to two SATA ports.
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properties:
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compatible:
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const: cortina,gemini-sata-bridge
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reg:
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maxItems: 1
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resets:
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minItems: 2
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maxItems: 2
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description: phandles to the reset lines for both SATA bridges
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reset-names:
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items:
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- const: sata0
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- const: sata1
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clocks:
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minItems: 2
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maxItems: 2
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description: phandles to the compulsory peripheral clocks
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clock-names:
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items:
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- const: SATA0_PCLK
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- const: SATA1_PCLK
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syscon:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: a phandle to the global Gemini system controller
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cortina,gemini-ata-muxmode:
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$ref: /schemas/types.yaml#/definitions/uint32
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enum:
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- 0
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- 1
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- 2
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- 3
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description: |
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Tell the desired multiplexing mode for the ATA controller and SATA
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bridges.
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Mode 0: ata0 master <-> sata0
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ata1 master <-> sata1
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ata0 slave interface brought out on IDE pads
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Mode 1: ata0 master <-> sata0
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ata1 master <-> sata1
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ata1 slave interface brought out on IDE pads
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Mode 2: ata1 master <-> sata1
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ata1 slave <-> sata0
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ata0 master and slave interfaces brought out on IDE pads
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Mode 3: ata0 master <-> sata0
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ata0 slave <-> sata1
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ata1 master and slave interfaces brought out on IDE pads
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cortina,gemini-enable-ide-pins:
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type: boolean
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description: Enables the PATA to IDE connection.
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The muxmode setting decides whether ATA0 or ATA1 is brought out,
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and whether master, slave or both interfaces get brought out.
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cortina,gemini-enable-sata-bridge:
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type: boolean
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description: Enables the PATA to SATA bridge inside the Gemnini SoC.
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The Muxmode decides what PATA blocks will be muxed out and how.
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required:
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- clocks
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- clock-names
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- cortina,gemini-ata-muxmode
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- resets
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- reset-names
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- compatible
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- reg
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- syscon
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/cortina,gemini-clock.h>
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sata@46000000 {
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compatible = "cortina,gemini-sata-bridge";
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reg = <0x46000000 0x100>;
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resets = <&rcon 26>, <&rcon 27>;
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reset-names = "sata0", "sata1";
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clocks = <&gcc GEMINI_CLK_GATE_SATA0>,
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<&gcc GEMINI_CLK_GATE_SATA1>;
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clock-names = "SATA0_PCLK", "SATA1_PCLK";
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syscon = <&syscon>;
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cortina,gemini-ata-muxmode = <3>;
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cortina,gemini-enable-ide-pins;
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cortina,gemini-enable-sata-bridge;
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};
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