From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Manivannan Sadhasivam <mani@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Neil Armstrong <neil.armstrong@linaro.org>,
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Subject: Re: [PATCH RFC] arm64: dts: qcom: qcs6490-rb3gen2: Enable uPD720201 and GL3590
Date: Mon, 16 Feb 2026 13:48:33 +0100 [thread overview]
Message-ID: <4fbc3ceb-ac69-4c62-8493-e216f352a64e@oss.qualcomm.com> (raw)
In-Reply-To: <20260212-rb3gen2-upd-gl3590-v1-1-18fb04bb32b0@oss.qualcomm.com>
On 2/12/26 9:43 PM, Bjorn Andersson wrote:
> The QCS6490 Rb3Gen2 has a Renesas μPD720201 XHCI controller hanging off
> the TC9563 PCIe switch, on this a Genesys Logic GL3590 USB hub provides
> two USB Type-A ports and an ASIX AX88179 USB 3.0 Gigabit Ethernet
> interface.
>
> The Renesas chip is powered by two regulators controlled through PM7250B
> GPIOs 1 and 4, and the power/reset pin is pulled down by PM8350C GPIO 4.
> The Genesys chip power is always-on, but the reset pin is controlled
> through TLMM GPIO 162.
>
> Describe the Renesas chip on the PCIe bus, with supplies and reset, to
> allow it to be brought out of reset and discovered. Then describe the
> two peers of the USB hub, with its reset GPIO, to allow this to be
> brought out of reset.
>
> The USB Type-A connectors are not described, as they are in no regard
> controlled by the operating system.
Nice, for a change ;)
[...]
> +
> + usb_hub_reset_state: usb-hub-reset-state {
> + pins = "gpio162";
> + function = "gpio";
> +
> + drive-strength = <2>;
> + bias-disable;
Straying away from the main topic, I find these newlines in the middle
excessive
Konrad
next prev parent reply other threads:[~2026-02-16 12:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-12 20:43 Bjorn Andersson
2026-02-13 1:45 ` Manivannan Sadhasivam
2026-02-16 12:48 ` Konrad Dybcio [this message]
2026-02-24 7:52 ` Dmitry Baryshkov
2026-02-25 3:40 ` Bjorn Andersson
2026-02-26 3:35 ` Dmitry Baryshkov
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