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Tue, 14 Nov 2023 12:32:15 -0800 (PST) Received: from [172.25.83.73] ([12.186.190.1]) by smtp.gmail.com with ESMTPSA id h13-20020a0ceecd000000b00671b009412asm3132110qvs.141.2023.11.14.12.32.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Nov 2023 12:32:14 -0800 (PST) Message-ID: Date: Tue, 14 Nov 2023 21:32:14 +0100 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 1/2] dt-bindings: input: bindings for Adafruit Seesaw Gamepad Content-Language: en-US To: =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , Anshul Dalal Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, Conor Dooley , Dmitry Torokhov , linux-kernel@vger.kernel.org, Conor Dooley , Rob Herring , Krzysztof Kozlowski , Jeff LaBundy , linux-kernel-mentees@lists.linuxfoundation.org References: <20231108005337.45069-1-anshulusr@gmail.com> <0defc0e3-dc15-459d-9e71-64f3c38a6931@t-8ch.de> From: Krzysztof Kozlowski Autocrypt: addr=krzysztof.kozlowski@linaro.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 14/11/2023 20:20, Thomas Weißschuh wrote: > On 2023-11-08 06:23:35+0530, Anshul Dalal wrote: >> Adds bindings for the Adafruit Seesaw Gamepad. >> >> The gamepad functions as an i2c device with the default address of 0x50 >> and has an IRQ pin that can be enabled in the driver to allow for a rising >> edge trigger on each button press or joystick movement. >> >> Product page: >> https://www.adafruit.com/product/5743 >> Arduino driver: >> https://github.com/adafruit/Adafruit_Seesaw >> >> Reviewed-by: Conor Dooley >> Reviewed-by: Krzysztof Kozlowski >> Signed-off-by: Anshul Dalal >> --- >> >> Changes for v8: >> - no updates >> >> Changes for v7: >> - no updates >> >> Changes for v6: >> - no updates >> >> Changes for v5: >> - Added link to the datasheet >> >> Changes for v4: >> - Fixed the URI for the id field >> - Added `interrupts` property >> >> Changes for v3: >> - Updated id field to reflect updated file name from previous version >> - Added `reg` property >> >> Changes for v2: >> - Renamed file to `adafruit,seesaw-gamepad.yaml` >> - Removed quotes for `$id` and `$schema` >> - Removed "Bindings for" from the description >> - Changed node name to the generic name "joystick" >> - Changed compatible to 'adafruit,seesaw-gamepad' instead of >> 'adafruit,seesaw_gamepad' >> --- >> .../input/adafruit,seesaw-gamepad.yaml | 60 +++++++++++++++++++ >> 1 file changed, 60 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/input/adafruit,seesaw-gamepad.yaml >> >> diff --git a/Documentation/devicetree/bindings/input/adafruit,seesaw-gamepad.yaml b/Documentation/devicetree/bindings/input/adafruit,seesaw-gamepad.yaml >> new file mode 100644 >> index 000000000000..3f0d1c5a3b9b >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/input/adafruit,seesaw-gamepad.yaml >> @@ -0,0 +1,60 @@ >> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) >> +%YAML 1.2 >> +--- >> +$id: http://devicetree.org/schemas/input/adafruit,seesaw-gamepad.yaml# >> +$schema: http://devicetree.org/meta-schemas/core.yaml# >> + >> +title: Adafruit Mini I2C Gamepad with seesaw >> + >> +maintainers: >> + - Anshul Dalal >> + >> +description: | >> + Adafruit Mini I2C Gamepad >> + >> + +-----------------------------+ >> + | ___ | >> + | / \ (X) | >> + | | S | __ __ (Y) (A) | >> + | \___/ |ST| |SE| (B) | >> + | | >> + +-----------------------------+ >> + >> + S -> 10-bit percision bidirectional analog joystick >> + ST -> Start >> + SE -> Select >> + X, A, B, Y -> Digital action buttons >> + >> + Datasheet: https://cdn-learn.adafruit.com/downloads/pdf/gamepad-qt.pdf >> + Product page: https://www.adafruit.com/product/5743 >> + Arduino Driver: https://github.com/adafruit/Adafruit_Seesaw >> + >> +properties: >> + compatible: >> + const: adafruit,seesaw-gamepad > > I don't really have any clue about devicetree, but shouldn't the actual > driver have an id-table for this "compatible"? It should, why was it dropped? > > It had one up to v5 of the patchset. > > Jeff had some comments about the OF aspect [0], but to me the state now > seems incorrect. > Maybe the DT can be dropped completely? > > Jeff, could you advise? > >> + >> + reg: >> + maxItems: 1 >> + >> + interrupts: >> + maxItems: 1 >> + description: >> + The gamepad's IRQ pin triggers a rising edge if interrupts are enabled. > > Interrupts are not supported yet by the driver. > Should the property be there already? Bindings describe the hardware, no the driver. If the hardware has interrupt line, it should be described here. Best regards, Krzysztof