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Message-ID: <6a982b56-2f4c-441f-acf7-a8e77ea55600@oss.qualcomm.com>
Date: Wed, 4 Feb 2026 11:26:37 +0530
From: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
Swati Agarwal <swati.agarwal@....qualcomm.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Icenowy Zheng <uwu@...nowy.me>,
Matthias Kaehlcke <mka@...omium.org>,
Mike Looijmans <mike.looijmans@...ic.nl>,
Stephen Boyd
<swboyd@...omium.org>,
Jens Glathe <jens.glathe@...schoolsolutions.biz>,
Chaoyi Chen <chaoyi.chen@...k-chips.com>,
J. Neuschäfer
<j.ne@...teo.net>,
Pin-yen Lin <treapking@...omium.org>,
Catalin Popescu <catalin.popescu@...ca-geosystems.com>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>, linux-usb@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v5 4/4] arm64: dts: qcom: lemans-evk: Enable secondary USB
controller in host mode
On 2/4/2026 7:03 AM, Dmitry Baryshkov wrote:
> On Tue, Jan 27, 2026 at 10:53:46AM +0530, Swati Agarwal wrote:
>> On Thu, Jan 22, 2026 at 4:02 PM Dmitry Baryshkov
>> <dmitry.baryshkov@....qualcomm.com> wrote:
>>>
>>> On Thu, Jan 22, 2026 at 02:58:52PM +0530, Swati Agarwal wrote:
>>>> Enable secondary USB controller in host mode on lemans EVK Platform.
>>>>
>>>> Secondary USB controller is connected to a Genesys Logic USB HUB GL3590
>>>> having 4 ports. The ports of hub that are present on lemans EVK standalone
>>>> board are used as follows:-
>>>> 1) port-1 is connected to HD3SS3220 Type-C port controller.
>>>> 2) port-4 is used for the M.2 E key on corekit. Standard core kit uses UART
>>>> for Bluetooth. This port is to be used only if user optionally replaces the
>>>> WiFi card with the NFA765 chip which uses USB for Bluetooth.
>>>>
>>>> Remaining 2 ports will become functional when the interface plus mezzanine
>>>> board is stacked on top of corekit:
>>>>
>>>> 3) port-2 is connected to another hub which is present on the mezz through
>>>> which 4 type-A ports are connected.
>>>> 4) port-3 is used for the M.2 B key for a 5G card when the mezz is
>>>> connected.
>>>>
>>>> Mark the second USB controller as host only capable and add the HD3SS3220
>>>> Type-C port controller along with Type-c connector for controlling vbus
>>>> supply.
>>>>
>>>> Signed-off-by: Swati Agarwal <swati.agarwal@....qualcomm.com>
>>>> ---
>>>> arch/arm64/boot/dts/qcom/lemans-evk.dts | 208 ++++++++++++++++++++++++
>>>> 1 file changed, 208 insertions(+)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
>>>> index 074a1edd0334..a549f7fe53a1 100644
>>>> --- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
>>>> +++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
>>>> @@ -68,6 +68,45 @@ usb0_con_ss_ep: endpoint {
>>>> };
>>>> };
>>>>
>>>> + connector-1 {
>>>> + compatible = "usb-c-connector";
>>>> + label = "USB1-Type-C";
>>>> + data-role = "host";
>>>> + power-role = "source";
>>>> +
>>>> + vbus-supply = <&vbus_supply_regulator_1>;
>>>> +
>>>> + ports {
>>>> + #address-cells = <1>;
>>>> + #size-cells = <0>;
>>>> +
>>>> + port@0 {
>>>> + reg = <0>;
>>>> +
>>>> + usb1_con_ss_ep: endpoint {
>>>
>>> This contradicts USB-C connector bindings. Why?
>>>
>>>> + remote-endpoint = <&hd3ss3220_1_in_ep>;
>>>> + };
>>>> + };
>>>> +
>>>> + port@1 {
>>>> + reg = <1>;
>>>> +
>>>> + usb1_hs_in: endpoint {
>>>> + remote-endpoint = <&usb_hub_2_1>;
>>>> + };
>>>> +
>>>> + };
>>>> +
>>>> + port@2 {
>>>> + reg = <2>;
>>>> +
>>>> + usb1_ss_in: endpoint {
>>>
>>> port@2 is for the SBU signals. It can't be connected to the hub.
>>>
>>>> + remote-endpoint = <&usb_hub_3_1>;
>>>> + };
>>>> + };
>>>> + };
>>>> + };
>>>> +
>>>> edp0-connector {
>>>> compatible = "dp-connector";
>>>> label = "EDP0";
>>>> @@ -141,6 +180,16 @@ vbus_supply_regulator_0: regulator-vbus-supply-0 {
>>>> enable-active-high;
>>>> };
>>>>
>>>> + vbus_supply_regulator_1: regulator-vbus-supply-1 {
>>>> + compatible = "regulator-fixed";
>>>> + regulator-name = "vbus_supply_1";
>>>> + gpio = <&expander1 3 GPIO_ACTIVE_HIGH>;
>>>> + regulator-min-microvolt = <5000000>;
>>>> + regulator-max-microvolt = <5000000>;
>>>> + regulator-boot-on;
>>>> + enable-active-high;
>>>> + };
>>>> +
>>>> vmmc_sdc: regulator-vmmc-sdc {
>>>> compatible = "regulator-fixed";
>>>>
>>>> @@ -536,6 +585,39 @@ hd3ss3220_0_out_ep: endpoint {
>>>> };
>>>> };
>>>> };
>>>> +
>>>> + usb-typec@47 {
>>>> + compatible = "ti,hd3ss3220";
>>>> + reg = <0x47>;
>>>> +
>>>> + interrupts-extended = <&pmm8654au_2_gpios 6 IRQ_TYPE_EDGE_FALLING>;
>>>> +
>>>> + id-gpios = <&tlmm 51 GPIO_ACTIVE_HIGH>;
>>>> +
>>>> + pinctrl-0 = <&usb1_id>, <&usb1_intr>;
>>>> + pinctrl-names = "default";
>>>> +
>>>> + ports {
>>>> + #address-cells = <1>;
>>>> + #size-cells = <0>;
>>>> +
>>>> + port@0 {
>>>> + reg = <0>;
>>>> +
>>>> + hd3ss3220_1_in_ep: endpoint {
>>>> + remote-endpoint = <&usb1_con_ss_ep>;
>>>> + };
>>>> + };
>>>> +
>>>> + port@1 {
>>>> + reg = <1>;
>>>> +
>>>> + hd3ss3220_1_out_ep: endpoint {
>>>> + };
>>>
>>> Why is this port disconnected? It it really N/C?
>>
>> Hi Dmitry,
>>
>> Sorry for the confusion, Can we do it as follows:
>>
>> hub: Hd3ss3220 typec-connector
>>
>> usb_hub_2_1 <-> port@1 port@1 <-> empty
>> usb_hub_3_1 <-> port@2 port@2 <-> <empty>
>> port@0 <-> port@0
>>
>
> You still missed the _why_. Why port@1 of HD3SS3220 is not connected?
>
There are no remote endpoints added in dwc3 node. Since we are making
dr_mode host. Hence keeping this remore endpoint empty.
Regards,
Krishna,
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