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Message-ID: <20231019135103.GA203636-robh@kernel.org>
Date: Thu, 19 Oct 2023 08:51:03 -0500
From: Rob Herring <robh@...nel.org>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: Andrew Lunn <andrew@...n.ch>,
Gregory Clement <gregory.clement@...tlin.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Russell King <linux@...linux.org.uk>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Christian Marangi <ansuelsmth@...il.com>,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v4 6/7] dt-bindings: marvell: Rewrite MV88E6xxx
in schema
On Wed, Oct 18, 2023 at 11:03:45AM +0200, Linus Walleij wrote:
> This is an attempt to rewrite the Marvell MV88E6xxx switch bindings
> in YAML schema.
>
> The current text binding says:
> WARNING: This binding is currently unstable. Do not program it into a
> FLASH never to be changed again. Once this binding is stable, this
> warning will be removed.
>
> Well that never happened before we switched to YAML markup,
> we can't have it like this, what about fixing the mess?
>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> .../bindings/net/dsa/marvell,mv88e6xxx.yaml | 225 +++++++++++++++++++++
> .../devicetree/bindings/net/dsa/marvell.txt | 109 ----------
> MAINTAINERS | 2 +-
> 3 files changed, 226 insertions(+), 110 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/net/dsa/marvell,mv88e6xxx.yaml b/Documentation/devicetree/bindings/net/dsa/marvell,mv88e6xxx.yaml
> new file mode 100644
> index 000000000000..8013ac411b15
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/dsa/marvell,mv88e6xxx.yaml
> @@ -0,0 +1,225 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/dsa/marvell,mv88e6xxx.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Marvell MV88E6xxx DSA switch family
> +
> +maintainers:
> + - Andrew Lunn <andrew@...n.ch>
> +
> +description:
> + The Marvell MV88E6xxx switch series has been produced and sold
> + by Marvell since at least 2010. The switch has a few compatibles which
> + just indicate the base address of the switch, then operating systems
> + can investigate switch ID registers to find out which actual version
> + of the switch it is dealing with.
> +
> +properties:
> + compatible:
> + enum:
> + - marvell,mv88e6085
> + - marvell,mv88e6190
> + - marvell,mv88e6250
> + description: |
> + marvell,mv88e6085: This switch uses base address 0x10.
> + This switch and its siblings will be autodetected from
> + ID registers found in the switch, so only "marvell,mv88e6085" should be
> + specified. This includes the following list of MV88Exxxx switches:
> + 6085, 6095, 6097, 6123, 6131, 6141, 6161, 6165, 6171, 6172, 6175, 6176,
> + 6185, 6240, 6320, 6321, 6341, 6350, 6351, 6352
> + marvell,mv88e6190: This switch uses base address 0x00.
> + This switch and its siblings will be autodetected from
> + ID registers found in the switch, so only "marvell,mv88e6190" should be
> + specified. This includes the following list of MV88Exxxx switches:
> + 6190, 6190X, 6191, 6290, 6361, 6390, 6390X
> + marvell,mv88e6250: This switch uses base address 0x08 or 0x18.
> + This switch and its siblings will be autodetected from
> + ID registers found in the switch, so only "marvell,mv88e6250" should be
> + specified. This includes the following list of MV88Exxxx switches:
> + 6220, 6250
> +
> + reg:
> + maxItems: 1
> +
> + eeprom-length:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Set to the length of an EEPROM connected to the switch. Must be
> + set if the switch can not detect the presence and/or size of a connected
> + EEPROM, otherwise optional.
> +
> + reset-gpios:
> + description:
> + GPIO to be used to reset the whole device
> + maxItems: 1
> +
> + interrupts:
> + description: The switch provides an external interrupt line, but it is
> + not always used by target systems.
> + maxItems: 1
> +
> + interrupt-controller:
> + description: The switch has an internal interrupt controller used by
> + the different sub-blocks.
> +
> + '#interrupt-cells':
> + description: The internal interrupt controller only supports triggering
> + on active high level interrupts so the second cell must alway be set to
> + IRQ_TYPE_LEVEL_HIGH.
> + const: 2
> +
> + mdio:
> + $ref: /schemas/net/mdio.yaml#
> + unevaluatedProperties: false
> + description: Marvell MV88E6xxx switches have an varying combination of
> + internal and external MDIO buses, in some cases a combined bus that
> + can be used both internally and externally. This node is for the
> + primary bus, used internally and sometimes also externally.
> +
> + mdio-external:
> + $ref: /schemas/net/mdio.yaml#
> + unevaluatedProperties: false
> + description: Marvell MV88E6xxx switches that have a separate external
> + MDIO bus use this port to access external components on the MDIO bus.
> +
> + properties:
> + compatible:
> + const: marvell,mv88e6xxx-mdio-external
> +
> + required:
> + - compatible
> +
> +$ref: dsa.yaml#
Drop this. Covered by the line below.
> +
> +allOf:
> + - $ref: dsa.yaml#/$defs/ethernet-ports
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