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Message-ID: <20200311174238.GA155346@google.com>
Date: Wed, 11 Mar 2020 10:42:38 -0700
From: Benson Leung <bleung@...gle.com>
To: Prashant Malani <pmalani@...omium.org>
Cc: devicetree@...r.kernel.org, bleung@...omium.org,
swboyd@...omium.org, heikki.krogerus@...ux.intel.com,
enric.balletbo@...labora.com, Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Chunfeng Yun <chunfeng.yun@...iatek.com>,
Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
Linus Walleij <linus.walleij@...aro.org>,
Miquel Raynal <miquel.raynal@...tlin.com>,
open list <linux-kernel@...r.kernel.org>,
"open list:USB SUBSYSTEM" <linux-usb@...r.kernel.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-arm-kernel@...ts.infradead.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH v3] dt-bindings: Convert usb-connector to YAML format.
Hi Prashant,
On Thu, Mar 05, 2020 at 02:27:28PM -0800, Prashant Malani wrote:
> Convert the usb-connector.txt bindings file to YAML format. This allows
> it to be used in dt_bindings_check verification. This patch was
> born out of a patch series for the addition of a Type C connector
> class port driver[1].
>
> An attempt has been made to maintain the same documentation text and
> example structure as was in the .txt file, but wherever needed
> modifications have been made to satisfy dt_bindings_check.
>
> Also, update all references to usb-connector.txt to now use
> usb-connector.yaml.
>
> [1]: https://lkml.org/lkml/2020/2/19/1232
>
> Signed-off-by: Prashant Malani <pmalani@...omium.org>
Reviewed-by: Benson Leung <bleung@...omium.org>
> ---
>
> Changes in v3:
> - Updated maintainer list.
> - Fixed grammatical errors in descriptions.
> - Reworded "type" description based on review comments.
> - Added more info to OF graph binding for port@2.
> - Removed address from DT nodes in examples.
>
> Changes in v2:
> - Added type references for some properties.
> - Removed pinctrl properties.
> - Updated power-role, try-power-role and data-role properties to be in
> valid schema format.
> - Added OF graph data bus binding property according to reviewer
> suggestions.
>
> .../connector/samsung,usb-connector-11pin.txt | 2 +-
> .../bindings/connector/usb-connector.txt | 135 ------------
> .../bindings/connector/usb-connector.yaml | 206 ++++++++++++++++++
> .../devicetree/bindings/usb/fcs,fusb302.txt | 2 +-
> .../devicetree/bindings/usb/generic.txt | 2 +-
> .../devicetree/bindings/usb/mediatek,mtu3.txt | 2 +-
> .../devicetree/bindings/usb/mediatek,musb.txt | 2 +-
> .../bindings/usb/richtek,rt1711h.txt | 2 +-
> .../devicetree/bindings/usb/ti,hd3ss3220.txt | 2 +-
> .../devicetree/bindings/usb/typec-tcpci.txt | 2 +-
> .../devicetree/bindings/usb/usb-conn-gpio.txt | 4 +-
> 11 files changed, 216 insertions(+), 145 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/connector/usb-connector.txt
> create mode 100644 Documentation/devicetree/bindings/connector/usb-connector.yaml
>
> diff --git a/Documentation/devicetree/bindings/connector/samsung,usb-connector-11pin.txt b/Documentation/devicetree/bindings/connector/samsung,usb-connector-11pin.txt
> index 22256e295a7a1..3dd8961154abf 100644
> --- a/Documentation/devicetree/bindings/connector/samsung,usb-connector-11pin.txt
> +++ b/Documentation/devicetree/bindings/connector/samsung,usb-connector-11pin.txt
> @@ -19,7 +19,7 @@ Required nodes:
> 0: High Speed (HS),
> 3: Mobile High-Definition Link (MHL), specific to 11-pin Samsung micro-USB.
>
> -[1]: bindings/connector/usb-connector.txt
> +[1]: bindings/connector/usb-connector.yaml
>
> Example
> -------
> diff --git a/Documentation/devicetree/bindings/connector/usb-connector.txt b/Documentation/devicetree/bindings/connector/usb-connector.txt
> deleted file mode 100644
> index 88578ac1a8a76..0000000000000
> --- a/Documentation/devicetree/bindings/connector/usb-connector.txt
> +++ /dev/null
> @@ -1,135 +0,0 @@
> -USB Connector
> -=============
> -
> -A USB connector node represents a physical USB connector. It should be
> -a child of a USB interface controller.
> -
> -Required properties:
> -- compatible: describes type of the connector, must be one of:
> - "usb-a-connector",
> - "usb-b-connector",
> - "usb-c-connector".
> -
> -Optional properties:
> -- label: symbolic name for the connector,
> -- type: size of the connector, should be specified in case of USB-A, USB-B
> - non-fullsize connectors: "mini", "micro".
> -- self-powered: Set this property if the usb device that has its own power
> - source.
> -
> -Optional properties for usb-b-connector:
> -- id-gpios: an input gpio for USB ID pin.
> -- vbus-gpios: an input gpio for USB VBUS pin, used to detect presence of
> - VBUS 5V.
> - see gpio/gpio.txt.
> -- vbus-supply: a phandle to the regulator for USB VBUS if needed when host
> - mode or dual role mode is supported.
> - Particularly, if use an output GPIO to control a VBUS regulator, should
> - model it as a regulator.
> - see regulator/fixed-regulator.yaml
> -- pinctrl-names : a pinctrl state named "default" is optional
> -- pinctrl-0 : pin control group
> - see pinctrl/pinctrl-bindings.txt
> -
> -Optional properties for usb-c-connector:
> -- power-role: should be one of "source", "sink" or "dual"(DRP) if typec
> - connector has power support.
> -- try-power-role: preferred power role if "dual"(DRP) can support Try.SNK
> - or Try.SRC, should be "sink" for Try.SNK or "source" for Try.SRC.
> -- data-role: should be one of "host", "device", "dual"(DRD) if typec
> - connector supports USB data.
> -
> -Required properties for usb-c-connector with power delivery support:
> -- source-pdos: An array of u32 with each entry providing supported power
> - source data object(PDO), the detailed bit definitions of PDO can be found
> - in "Universal Serial Bus Power Delivery Specification" chapter 6.4.1.2
> - Source_Capabilities Message, the order of each entry(PDO) should follow
> - the PD spec chapter 6.4.1. Required for power source and power dual role.
> - User can specify the source PDO array via PDO_FIXED/BATT/VAR/PPS_APDO()
> - defined in dt-bindings/usb/pd.h.
> -- sink-pdos: An array of u32 with each entry providing supported power
> - sink data object(PDO), the detailed bit definitions of PDO can be found
> - in "Universal Serial Bus Power Delivery Specification" chapter 6.4.1.3
> - Sink Capabilities Message, the order of each entry(PDO) should follow
> - the PD spec chapter 6.4.1. Required for power sink and power dual role.
> - User can specify the sink PDO array via PDO_FIXED/BATT/VAR/PPS_APDO() defined
> - in dt-bindings/usb/pd.h.
> -- op-sink-microwatt: Sink required operating power in microwatt, if source
> - can't offer the power, Capability Mismatch is set. Required for power
> - sink and power dual role.
> -
> -Required nodes:
> -- any data bus to the connector should be modeled using the OF graph bindings
> - specified in bindings/graph.txt, unless the bus is between parent node and
> - the connector. Since single connector can have multiple data buses every bus
> - has assigned OF graph port number as follows:
> - 0: High Speed (HS), present in all connectors,
> - 1: Super Speed (SS), present in SS capable connectors,
> - 2: Sideband use (SBU), present in USB-C.
> -
> -Examples
> ---------
> -
> -1. Micro-USB connector with HS lines routed via controller (MUIC):
> -
> -muic-max77843@66 {
> - ...
> - usb_con: connector {
> - compatible = "usb-b-connector";
> - label = "micro-USB";
> - type = "micro";
> - };
> -};
> -
> -2. USB-C connector attached to CC controller (s2mm005), HS lines routed
> -to companion PMIC (max77865), SS lines to USB3 PHY and SBU to DisplayPort.
> -DisplayPort video lines are routed to the connector via SS mux in USB3 PHY.
> -
> -ccic: s2mm005@33 {
> - ...
> - usb_con: connector {
> - compatible = "usb-c-connector";
> - label = "USB-C";
> -
> - ports {
> - #address-cells = <1>;
> - #size-cells = <0>;
> -
> - port@0 {
> - reg = <0>;
> - usb_con_hs: endpoint {
> - remote-endpoint = <&max77865_usbc_hs>;
> - };
> - };
> - port@1 {
> - reg = <1>;
> - usb_con_ss: endpoint {
> - remote-endpoint = <&usbdrd_phy_ss>;
> - };
> - };
> - port@2 {
> - reg = <2>;
> - usb_con_sbu: endpoint {
> - remote-endpoint = <&dp_aux>;
> - };
> - };
> - };
> - };
> -};
> -
> -3. USB-C connector attached to a typec port controller(ptn5110), which has
> -power delivery support and enables drp.
> -
> -typec: ptn5110@50 {
> - ...
> - usb_con: connector {
> - compatible = "usb-c-connector";
> - label = "USB-C";
> - power-role = "dual";
> - try-power-role = "sink";
> - source-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM)>;
> - sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM)
> - PDO_VAR(5000, 12000, 2000)>;
> - op-sink-microwatt = <10000000>;
> - };
> -};
> diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
> new file mode 100644
> index 0000000000000..4638d7adb806a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
> @@ -0,0 +1,206 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/connector/usb-connector.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: USB Connector
> +
> +maintainers:
> + - Rob Herring <robh@...nel.org>
> +
> +description:
> + A USB connector node represents a physical USB connector. It should be a child
> + of a USB interface controller.
> +
> +properties:
> + compatible:
> + enum:
> + - usb-a-connector
> + - usb-b-connector
> + - usb-c-connector
> +
> + label:
> + description: Symbolic name for the connector.
> +
> + type:
> + description: Size of the connector, should be specified in case of
> + non-fullsize 'usb-a-connector' or 'usb-b-connector' compatible
> + connectors.
> + allOf:
> + - $ref: /schemas/types.yaml#definitions/string
> + enum:
> + - mini
> + - micro
> +
> + self-powered:
> + description: Set this property if the USB device has its own power source.
> + type: boolean
> +
> + # The following are optional properties for "usb-b-connector".
> + id-gpios:
> + description: An input gpio for USB ID pin.
> + maxItems: 1
> +
> + vbus-gpios:
> + description: An input gpio for USB VBus pin, used to detect presence of
> + VBUS 5V.
> + maxItems: 1
> +
> + vbus-supply:
> + description: A phandle to the regulator for USB VBUS if needed when host
> + mode or dual role mode is supported.
> + Particularly, if use an output GPIO to control a VBUS regulator, should
> + model it as a regulator. See bindings/regulator/fixed-regulator.yaml
> +
> + # The following are optional properties for "usb-c-connector".
> + power-role:
> + description: Determines the power role that the Type C connector will
> + support. "dual" refers to Dual Role Port (DRP).
> + allOf:
> + - $ref: /schemas/types.yaml#definitions/string
> + enum:
> + - source
> + - sink
> + - dual
> +
> + try-power-role:
> + description: Preferred power role.
> + allOf:
> + - $ref: /schemas/types.yaml#definitions/string
> + enum:
> + - source
> + - sink
> + - dual
> +
> + data-role:
> + description: Data role if Type C connector supports USB data. "dual" refers
> + Dual Role Device (DRD).
> + allOf:
> + - $ref: /schemas/types.yaml#definitions/string
> + enum:
> + - host
> + - device
> + - dual
> +
> + # The following are optional properties for "usb-c-connector" with power
> + # delivery support.
> + source-pdos:
> + description: An array of u32 with each entry providing supported power
> + source data object(PDO), the detailed bit definitions of PDO can be found
> + in "Universal Serial Bus Power Delivery Specification" chapter 6.4.1.2
> + Source_Capabilities Message, the order of each entry(PDO) should follow
> + the PD spec chapter 6.4.1. Required for power source and power dual role.
> + User can specify the source PDO array via PDO_FIXED/BATT/VAR/PPS_APDO()
> + defined in dt-bindings/usb/pd.h.
> + minItems: 1
> + maxItems: 7
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32-array
> +
> + sink-pdos:
> + description: An array of u32 with each entry providing supported power sink
> + data object(PDO), the detailed bit definitions of PDO can be found in
> + "Universal Serial Bus Power Delivery Specification" chapter 6.4.1.3
> + Sink Capabilities Message, the order of each entry(PDO) should follow the
> + PD spec chapter 6.4.1. Required for power sink and power dual role. User
> + can specify the sink PDO array via PDO_FIXED/BATT/VAR/PPS_APDO() defined
> + in dt-bindings/usb/pd.h.
> + minItems: 1
> + maxItems: 7
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32-array
> +
> + op-sink-microwatt:
> + description: Sink required operating power in microwatt, if source can't
> + offer the power, Capability Mismatch is set. Required for power sink and
> + power dual role.
> +
> + ports:
> + description: OF graph bindings (specified in bindings/graph.txt) that model
> + any data bus to the connector unless the bus is between parent node and
> + the connector. Since a single connector can have multiple data buses every
> + bus has an assigned OF graph port number as described below.
> + type: object
> + properties:
> + port@0:
> + type: object
> + description: High Speed (HS), present in all connectors.
> +
> + port@1:
> + type: object
> + description: Super Speed (SS), present in SS capable connectors.
> +
> + port@2:
> + type: object
> + description: Sideband Use (SBU), present in USB-C. This describes the
> + alternate mode connection of which SBU is a part.
> +
> + required:
> + - port@0
> +
> +required:
> + - compatible
> +
> +examples:
> + # Micro-USB connector with HS lines routed via controller (MUIC).
> + - |+
> + muic-max77843 {
> + usb_con1: connector {
> + compatible = "usb-b-connector";
> + label = "micro-USB";
> + type = "micro";
> + };
> + };
> +
> + # USB-C connector attached to CC controller (s2mm005), HS lines routed
> + # to companion PMIC (max77865), SS lines to USB3 PHY and SBU to DisplayPort.
> + # DisplayPort video lines are routed to the connector via SS mux in USB3 PHY.
> + - |+
> + ccic: s2mm005 {
> + usb_con2: connector {
> + compatible = "usb-c-connector";
> + label = "USB-C";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + usb_con_hs: endpoint {
> + remote-endpoint = <&max77865_usbc_hs>;
> + };
> + };
> + port@1 {
> + reg = <1>;
> + usb_con_ss: endpoint {
> + remote-endpoint = <&usbdrd_phy_ss>;
> + };
> + };
> + port@2 {
> + reg = <2>;
> + usb_con_sbu: endpoint {
> + remote-endpoint = <&dp_aux>;
> + };
> + };
> + };
> + };
> + };
> +
> + # USB-C connector attached to a typec port controller(ptn5110), which has
> + # power delivery support and enables drp.
> + - |+
> + #include <dt-bindings/usb/pd.h>
> + typec: ptn5110 {
> + usb_con3: connector {
> + compatible = "usb-c-connector";
> + label = "USB-C";
> + power-role = "dual";
> + try-power-role = "sink";
> + source-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM)>;
> + sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM)
> + PDO_VAR(5000, 12000, 2000)>;
> + op-sink-microwatt = <10000000>;
> + };
> + };
> diff --git a/Documentation/devicetree/bindings/usb/fcs,fusb302.txt b/Documentation/devicetree/bindings/usb/fcs,fusb302.txt
> index ba2e32d500c02..60e4654297af7 100644
> --- a/Documentation/devicetree/bindings/usb/fcs,fusb302.txt
> +++ b/Documentation/devicetree/bindings/usb/fcs,fusb302.txt
> @@ -9,7 +9,7 @@ Required sub-node:
> - connector : The "usb-c-connector" attached to the FUSB302 IC. The bindings
> of the connector node are specified in:
>
> - Documentation/devicetree/bindings/connector/usb-connector.txt
> + Documentation/devicetree/bindings/connector/usb-connector.yaml
>
>
> Example:
> diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt
> index e6790d2a4da9b..474e74c06522d 100644
> --- a/Documentation/devicetree/bindings/usb/generic.txt
> +++ b/Documentation/devicetree/bindings/usb/generic.txt
> @@ -34,7 +34,7 @@ Optional properties:
> - usb-role-switch: boolean, indicates that the device is capable of assigning
> the USB data role (USB host or USB device) for a given
> USB connector, such as Type-C, Type-B(micro).
> - see connector/usb-connector.txt.
> + see connector/usb-connector.yaml.
>
> This is an attribute to a USB controller such as:
>
> diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
> index e0ae6096f7ac8..a82ca438aec1f 100644
> --- a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
> +++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
> @@ -34,7 +34,7 @@ Optional properties:
> dual-role mode.
> it's considered valid for compatibility reasons, not allowed for
> new bindings, and put into a usb-connector node.
> - see connector/usb-connector.txt.
> + see connector/usb-connector.yaml.
> - pinctrl-names : a pinctrl state named "default" is optional, and need be
> defined if auto drd switch is enabled, that means the property dr_mode
> is set as "otg", and meanwhile the property "mediatek,enable-manual-drd"
> diff --git a/Documentation/devicetree/bindings/usb/mediatek,musb.txt b/Documentation/devicetree/bindings/usb/mediatek,musb.txt
> index 2b8a87c90d9ea..5eedb02965622 100644
> --- a/Documentation/devicetree/bindings/usb/mediatek,musb.txt
> +++ b/Documentation/devicetree/bindings/usb/mediatek,musb.txt
> @@ -23,7 +23,7 @@ Optional properties:
> MTCMOS
>
> Required child nodes:
> - usb connector node as defined in bindings/connector/usb-connector.txt
> + usb connector node as defined in bindings/connector/usb-connector.yaml
> Optional properties:
> - id-gpios : input GPIO for USB ID pin.
> - vbus-gpios : input GPIO for USB VBUS pin.
> diff --git a/Documentation/devicetree/bindings/usb/richtek,rt1711h.txt b/Documentation/devicetree/bindings/usb/richtek,rt1711h.txt
> index e3fc57e605ed6..6f8115db2ea9b 100644
> --- a/Documentation/devicetree/bindings/usb/richtek,rt1711h.txt
> +++ b/Documentation/devicetree/bindings/usb/richtek,rt1711h.txt
> @@ -9,7 +9,7 @@ Required properties:
> Required sub-node:
> - connector: The "usb-c-connector" attached to the tcpci chip, the bindings
> of connector node are specified in
> - Documentation/devicetree/bindings/connector/usb-connector.txt
> + Documentation/devicetree/bindings/connector/usb-connector.yaml
>
> Example :
> rt1711h@4e {
> diff --git a/Documentation/devicetree/bindings/usb/ti,hd3ss3220.txt b/Documentation/devicetree/bindings/usb/ti,hd3ss3220.txt
> index 25780e945b154..2bd21b22ce95b 100644
> --- a/Documentation/devicetree/bindings/usb/ti,hd3ss3220.txt
> +++ b/Documentation/devicetree/bindings/usb/ti,hd3ss3220.txt
> @@ -9,7 +9,7 @@ Required sub-node:
> - connector: The "usb-c-connector" attached to the hd3ss3220 chip. The
> bindings of the connector node are specified in:
>
> - Documentation/devicetree/bindings/connector/usb-connector.txt
> + Documentation/devicetree/bindings/connector/usb-connector.yaml
>
> Example:
> hd3ss3220@47 {
> diff --git a/Documentation/devicetree/bindings/usb/typec-tcpci.txt b/Documentation/devicetree/bindings/usb/typec-tcpci.txt
> index 0dd1469e73180..2082522b1c326 100644
> --- a/Documentation/devicetree/bindings/usb/typec-tcpci.txt
> +++ b/Documentation/devicetree/bindings/usb/typec-tcpci.txt
> @@ -13,7 +13,7 @@ Required properties:
> Required sub-node:
> - connector: The "usb-c-connector" attached to the tcpci chip, the bindings
> of connector node are specified in
> - Documentation/devicetree/bindings/connector/usb-connector.txt
> + Documentation/devicetree/bindings/connector/usb-connector.yaml
>
> Example:
>
> diff --git a/Documentation/devicetree/bindings/usb/usb-conn-gpio.txt b/Documentation/devicetree/bindings/usb/usb-conn-gpio.txt
> index 3d05ae56cb0dc..ec80641208a53 100644
> --- a/Documentation/devicetree/bindings/usb/usb-conn-gpio.txt
> +++ b/Documentation/devicetree/bindings/usb/usb-conn-gpio.txt
> @@ -8,11 +8,11 @@ Required properties:
> - compatible : should include "gpio-usb-b-connector" and "usb-b-connector".
> - id-gpios, vbus-gpios : input gpios, either one of them must be present,
> and both can be present as well.
> - see connector/usb-connector.txt
> + see connector/usb-connector.yaml
>
> Optional properties:
> - vbus-supply : can be present if needed when supports dual role mode.
> - see connector/usb-connector.txt
> + see connector/usb-connector.yaml
>
> - Sub-nodes:
> - port : can be present.
> --
> 2.25.0.265.gbab2e86ba0-goog
>
--
Benson Leung
Staff Software Engineer
Chrome OS Kernel
Google Inc.
bleung@...gle.com
Chromium OS Project
bleung@...omium.org
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