From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Elson Serrao <elson.serrao@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Rob Herring <robh@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Peter Chen <peter.chen@kernel.org>
Subject: Re: [PATCH v9 4/8] usb: misc: qcom_eud: add per-path role switch support
Date: Thu, 15 Oct 2026 16:42:59 +0200 [thread overview]
Message-ID: <aa0aa4e3-6541-4cfb-b947-388c62fd4b72@oss.qualcomm.com> (raw)
In-Reply-To: <20260929213513.2401005-5-elson.serrao@oss.qualcomm.com>
On 9/29/26 11:35 PM, Elson Serrao wrote:
> The EUD hardware can support multiple High-Speed USB paths, each connected
> to different USB controllers. The current implementation uses a single
> chip-level role switch, which cannot properly handle multi-path
> configurations where each path needs independent role management. Since
> EUD is physically present between the USB connector and the controller,
> it should also relay the role change requests from the connector.
>
> Restructure the driver to support per-path role switches and remove the
> chip-level role switch. Additionally, as EUD need not modify the USB
> role upon enabling, remove the unnecessary role switch call from
> enable_eud().
>
> Reviewed-by: Peter Chen <peter.chen@kernel.org>
> Signed-off-by: Elson Serrao <elson.serrao@oss.qualcomm.com>
> ---
[...]
> + path->np = of_node_get(np);
This changed because the binding now supports both bindings with
eud-path@ children and without them. In the latter case, this np
ends up being the `ports` node
Konrad
next prev parent reply other threads:[~2026-10-15 14:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-29 21:35 [PATCH v9 0/8] Improve Qualcomm EUD driver and platform support Elson Serrao
2026-09-29 21:35 ` [PATCH v9 1/8] dt-bindings: soc: qcom: eud: Add per-path child nodes for UTMI routing Elson Serrao
2026-09-29 21:35 ` [PATCH v9 2/8] usb: misc: qcom_eud: add sysfs attribute for port selection Elson Serrao
2026-09-29 21:35 ` [PATCH v9 3/8] usb: misc: qcom_eud: add per-path High-Speed PHY control Elson Serrao
2026-09-29 21:35 ` [PATCH v9 4/8] usb: misc: qcom_eud: add per-path role switch support Elson Serrao
2026-10-15 14:42 ` Konrad Dybcio [this message]
2026-10-15 14:43 ` Konrad Dybcio
2026-10-17 1:16 ` Elson Serrao
2026-10-15 14:44 ` Konrad Dybcio
2026-10-17 1:14 ` Elson Serrao
2026-09-29 21:35 ` [PATCH v9 5/8] usb: misc: qcom_eud: improve enable_store API Elson Serrao
2026-09-29 21:35 ` [PATCH v9 6/8] usb: misc: qcom_eud: add role-based EUD control Elson Serrao
2026-09-29 21:35 ` [PATCH v9 7/8] usb: misc: qcom_eud: fix virtual attach/detach event handling Elson Serrao
2026-09-29 21:35 ` [PATCH v9 8/8] arm64: dts: qcom: kodiak: Desribe EUD UTMI routing and connector mapping Elson Serrao
2026-10-13 11:01 ` Konrad Dybcio
2026-10-07 10:44 ` [PATCH v9 0/8] Improve Qualcomm EUD driver and platform support Gopikrishna Garmidi
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