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[62.108.10.64]) by smtp.gmail.com with ESMTPSA id t15-20020a1709066bcf00b009a13fdc139fsm1102535ejs.183.2023.10.20.02.33.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Oct 2023 02:33:22 -0700 (PDT) From: Luca Weiss Date: Fri, 20 Oct 2023 11:33:18 +0200 Subject: [PATCH v2 1/3] dt-bindings: usb: fsa4480: Add data-lanes property to endpoint Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231020-fsa4480-swap-v2-1-9a7f9bb59873@fairphone.com> References: <20231020-fsa4480-swap-v2-0-9a7f9bb59873@fairphone.com> In-Reply-To: <20231020-fsa4480-swap-v2-0-9a7f9bb59873@fairphone.com> To: Heikki Krogerus , Greg Kroah-Hartman , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson Cc: ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, Luca Weiss X-Mailer: b4 0.12.3 Allow specifying data-lanes to reverse the muxing orientation between AUX+/- and SBU1/2 where necessary by the hardware design. In the mux there's a switch that needs to be controlled from the OS, and it either connects AUX+ -> SBU1 and AUX- -> SBU2, or the reverse: AUX+ -> SBU2 and AUX- -> SBU1, depending on the orientation of how the USB-C connector is plugged in. With this data-lanes property we can now specify that AUX+ and AUX- connections are swapped between the SoC and the mux, therefore the OS needs to consider this and reverse the direction of this switch in the mux. _______ _______ | | | |-- HP --| | |-- MIC --| |or SoC | | MUX |-- SBU1 ---> To the USB-C Codec |-- AUX+ --| |-- SBU2 ---> connected |-- AUX- --| | ______| |_____| (thanks to Neil Armstrong for this ASCII art) Signed-off-by: Luca Weiss Reviewed-by: Rob Herring --- .../devicetree/bindings/usb/fcs,fsa4480.yaml | 29 +++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml b/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml index f6e7a5c1ff0b..86f6d633c2fb 100644 --- a/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml +++ b/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml @@ -32,10 +32,37 @@ properties: type: boolean port: - $ref: /schemas/graph.yaml#/properties/port + $ref: /schemas/graph.yaml#/$defs/port-base description: A port node to link the FSA4480 to a TypeC controller for the purpose of handling altmode muxing and orientation switching. + unevaluatedProperties: false + + properties: + endpoint: + $ref: /schemas/graph.yaml#/$defs/endpoint-base + unevaluatedProperties: false + + properties: + data-lanes: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + Specifies how the AUX+/- lines are connected to SBU1/2. + oneOf: + - items: + - const: 0 + - const: 1 + description: | + Default AUX/SBU layout + - AUX+ connected to SBU2 + - AUX- connected to SBU1 + - items: + - const: 1 + - const: 0 + description: | + Swapped AUX/SBU layout + - AUX+ connected to SBU1 + - AUX- connected to SBU2 required: - compatible