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Date: Thu, 1 Jun 2023 08:52:38 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: nick.hawkins@....com, verdun@....com, linus.walleij@...aro.org,
brgl@...ev.pl, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, jdelvare@...e.com,
linux@...ck-us.net, andy.shevchenko@...il.com,
linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org
Subject: Re: [PATCH v2 1/5] dt-bindings: gpio: Add HPE GXP GPIO
On 31/05/2023 17:19, nick.hawkins@....com wrote:
> From: Nick Hawkins <nick.hawkins@....com>
>
> Provide access to the register regions and interrupt for GPIO. There
> will be two drivers available. The first driver under the hpe,gxp-gpio
> binding will provide GPIO information for the VUHC, CSM, and FN2
> host interfaces. The second driver under the hpe,gxp-gpio-pl will
> provide GPIO information from the CPLD interface. The main difference
> and need for two separate bindings is they have different interrupt
> parents. The other is hpe,gxp-gpio is a combination of physical
> and virtual GPIOs where as hpe,gxp-gpio-pl are all physical
> GPIOs from the CPLD.
>
> Signed-off-by: Nick Hawkins <nick.hawkins@....com>
>
> ---
>
> v2:
> *Put binding patch before the driver in the series
> *Improved patch description
> *Removed oneOf and items in compatible definition
> *Moved additionalProperties definition to correct spot in file
> *Fixed indentation on example
I don't think it was fixed.
> *Improved description in .yaml
> ---
> .../bindings/gpio/hpe,gxp-gpio.yaml | 190 ++++++++++++++++++
> 1 file changed, 190 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml
>
> diff --git a/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml b/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml
> new file mode 100644
> index 000000000000..b92b7d72d39b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.yaml
> @@ -0,0 +1,190 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpio/hpe,gxp-gpio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: HPE GXP gpio controllers
> +
> +maintainers:
> + - Nick Hawkins <nick.hawkins@....com>
> +
> +description:
> + Interruptable GPIO drivers for the HPE GXP that covers multiple interfaces
> + of both physical and virtual GPIO pins.
> +
> +properties:
> + compatible:
> + enum:
> + - hpe,gxp-gpio
> + - hpe,gxp-gpio-pl
> +
> + reg:
> + minItems: 2
> + maxItems: 6
> +
> + reg-names:
> + minItems: 2
> + maxItems: 6
> +
> + gpio-controller: true
> +
> + "#gpio-cells":
> + const: 2
> +
> + gpio-line-names:
> + minItems: 80
> + maxItems: 300
> +
> + interrupts:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> + - reg-names
> + - gpio-controller
> + - "#gpio-cells"
> +
> +allOf:
> + - if:
> + properties:
> + compatible:
> + contains:
> + enum:
> + - hpe,gxp-gpio
> + then:
> + properties:
> + reg:
> + items:
> + - description: CSM GPIO interface
> + - description: fn2 virtual button GPIO
> + - description: fn2 system status GPIO
> + - description: vuhc GPIO status interface
> + reg-names:
> + items:
> + - const: csm
> + - const: fn2-vbtn
> + - const: fn2-stat
> + - const: vuhc
> + - if:
> + properties:
> + compatible:
> + contains:
> + enum:
> + - hpe,gxp-gpio-pl
> + then:
> + properties:
> + reg:
> + items:
> + - description: Programmable logic device GPIO
> + - description: Programmable logic device interrupt GPIO
> + reg-names:
> + items:
> + - const: base
> + - const: interrupt
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + gpio@0 {
> + compatible = "hpe,gxp-gpio";
> + reg = <0x0 0x400>, <0x200046 0x1>, <0x200070 0x08>, <0x400064 0x80>;
> + reg-names = "csm", "fn2-vbtn", "fn2-stat", "vuhc";
> + gpio-controller;
> + #gpio-cells = <2>;
> + interrupt-parent = <&vic0>;
> + interrupts = <10>;
> + gpio-line-names = "IOP_LED1", "IOP_LED2",
> + "IOP_LED3", "IOP_LED4",
Broken indentation. This is aligned with opening " in previous line.
> + "IOP_LED5", "IOP_LED6",
> + "IOP_LED7", "IOP_LED8",
> + "FAN1_INST", "FAN2_INST",
> + "FAN3_INST", "FAN4_INST",
> + "FAN5_INST", "FAN6_INST",
> + "FAN7_INST", "FAN8_INST",
> + "FAN1_FAIL", "FAN2_FAIL",
> + "FAN3_FAIL", "FAN4_FAIL",
> + "FAN5_FAIL", "FAN6_FAIL",
> + "FAN7_FAIL", "FAN8_FAIL",
> + "FAN1_ID", "FAN2_ID",
> + "FAN3_ID", "FAN4_ID",
> + "FAN5_ID", "FAN6_ID",
> + "FAN7_ID", "FAN8_ID",
> + "IDENTIFY", "HEALTH_RED",
> + "HEALTH_AMBER", "POWER_BUTTON",
> + "UID_PRESS", "SLP",
> + "NMI_BUTTON", "RESET_BUTTON",
> + "SIO_S5", "SO_ON_CONTROL",
> + "PSU1_INST", "PSU2_INST",
> + "PSU3_INST", "PSU4_INST",
> + "PSU5_INST", "PSU6_INST",
> + "PSU7_INST", "PSU8_INST",
> + "PSU1_AC", "PSU2_AC",
> + "PSU3_AC", "PSU4_AC",
> + "PSU5_AC", "PSU6_AC",
> + "PSU7_AC", "PSU8_AC",
> + "PSU1_DC", "PSU2_DC",
> + "PSU3_DC", "PSU4_DC",
> + "PSU5_DC", "PSU6_DC",
> + "PSU7_DC", "PSU8_DC",
> + "", "",
> + "", "",
> + "", "",
> + "", "",
> + "", "",
> + "", "",
> + "", "";
> + };
> +
> + - |
> + gpio@...00300 {
> + compatible = "hpe,gxp-gpio-pl";
> + reg = <0x51000300 0x40>, <0x51000380 0x10>;
> + reg-names = "base", "interrupt";
One example is enough, because this almost does not differ from previous.
Best regards,
Krzysztof
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