Re: [PATCH 34/54] dt-bindings: usb: Convert SMSC USB3503 binding to a schema
From: Rob Herring <robh@kernel.org>
Date: 2021-07-23 22:08:45
Also in:
linux-arm-kernel, linux-usb
On Wed, Jul 21, 2021 at 04:04:04PM +0200, Maxime Ripard wrote:
quoted hunk ↗ jump to hunk
The SMSC USB3503 USB Hub Controller is supported by Linux thanks to its device tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that driver over to a YAML schema. Cc: Dongjin Kim <redacted> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Signed-off-by: Maxime Ripard <redacted> --- .../devicetree/bindings/usb/smsc,usb3503.yaml | 104 ++++++++++++++++++ .../devicetree/bindings/usb/usb3503.txt | 39 ------- 2 files changed, 104 insertions(+), 39 deletions(-) create mode 100644 Documentation/devicetree/bindings/usb/smsc,usb3503.yaml delete mode 100644 Documentation/devicetree/bindings/usb/usb3503.txtdiff --git a/Documentation/devicetree/bindings/usb/smsc,usb3503.yaml b/Documentation/devicetree/bindings/usb/smsc,usb3503.yaml new file mode 100644 index 000000000000..0e5622e7df87 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/smsc,usb3503.yaml@@ -0,0 +1,104 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/smsc,usb3503.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SMSC USB3503 High-Speed Hub Controller Device Tree Bindings + +maintainers: + - Dongjin Kim <tobetter@gmail.com> + +properties: + compatible: + enum: + - smsc,usb3503 + - smsc,usb3503a + + reg: + maxItems: 1 + + connect-gpios: + description: > + GPIO for connect
maxItems: 1
+ + intn-gpios: + description: > + GPIO for interrupt
maxItems: 1
+ + reset-gpios: + description: > + GPIO for reset
maxItems: 1
+ + disabled-ports: + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 1 + maxItems: 3 + items: + minimum: 1 + maximum: 3 + description: > + Specifies the ports unused using their port number. Do not describe this + property if all ports have to be enabled. + + initial-mode: + enum: [1, 2] + description: > + Specifies initial mode. 1 for Hub mode, 2 for standby mode. + + clocks: + description: > + Clock used for driving REFCLK signal. If not provided the driver assumes + that clock signal is always available, its rate is specified by REF_SEL + pins and a value from the primary reference clock frequencies table is + used.
maxItems: 1
+
+ clock-names:
+ const: refclk
+
+ refclk-frequency:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: >
+ Frequency of the REFCLK signal as defined by REF_SEL pins. If not
+ provided, driver will not set rate of the REFCLK signal and assume that a
+ value from the primary reference clock frequencies table is used.
+
+required:
+ - compatible
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ usb3503@8 {usb-hub@8
+ compatible = "smsc,usb3503";
+ reg = <0x08>;
+ connect-gpios = <&gpx3 0 1>;
+ disabled-ports = <2 3>;
+ intn-gpios = <&gpx3 4 1>;
+ reset-gpios = <&gpx3 5 1>;
+ initial-mode = <1>;
+ clocks = <&clks 80>;
+ clock-names = "refclk";
+ };
+ };
+
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ usb-hub {
+ /* I2C is not connected */We should probably require this is a USB bus child device in this case, but that's a separate change.
quoted hunk ↗ jump to hunk
+ compatible = "smsc,usb3503"; + initial-mode = <1>; /* initialize in HUB mode */ + disabled-ports = <1>; + intn-gpios = <&pio 7 5 GPIO_ACTIVE_HIGH>; /* PH5 */ + reset-gpios = <&pio 4 16 GPIO_ACTIVE_LOW>; /* PE16 */ + connect-gpios = <&pio 4 17 GPIO_ACTIVE_HIGH>; /* PE17 */ + refclk-frequency = <19200000>; + }; + +...diff --git a/Documentation/devicetree/bindings/usb/usb3503.txt b/Documentation/devicetree/bindings/usb/usb3503.txt deleted file mode 100644 index 057dd384d473..000000000000 --- a/Documentation/devicetree/bindings/usb/usb3503.txt +++ /dev/null@@ -1,39 +0,0 @@ -SMSC USB3503 High-Speed Hub Controller - -Required properties: -- compatible: Should be "smsc,usb3503" or "smsc,usb3503a". - -Optional properties: -- reg: Specifies the i2c slave address, it is required and should be 0x08 - if I2C is used. -- connect-gpios: Should specify GPIO for connect. -- disabled-ports: Should specify the ports unused. - '1' or '2' or '3' are available for this property to describe the port - number. 1~3 property values are possible to be described. - Do not describe this property if all ports have to be enabled. -- intn-gpios: Should specify GPIO for interrupt. -- reset-gpios: Should specify GPIO for reset. -- initial-mode: Should specify initial mode. - (1 for HUB mode, 2 for STANDBY mode) -- refclk: Clock used for driving REFCLK signal (optional, if not provided - the driver assumes that clock signal is always available, its - rate is specified by REF_SEL pins and a value from the primary - reference clock frequencies table is used). Use clocks and - clock-names in order to assign it -- refclk-frequency: Frequency of the REFCLK signal as defined by REF_SEL - pins (optional, if not provided, driver will not set rate of the - REFCLK signal and assume that a value from the primary reference - clock frequencies table is used) - -Examples: - usb3503@8 { - compatible = "smsc,usb3503"; - reg = <0x08>; - connect-gpios = <&gpx3 0 1>; - disabled-ports = <2 3>; - intn-gpios = <&gpx3 4 1>; - reset-gpios = <&gpx3 5 1>; - initial-mode = <1>; - clocks = <&clks 80>; - clock-names = "refclk"; - };-- 2.31.1