linux-kernel - Re: [PATCH v3] arm64: dts: qcom: sm6115: Add EUD dt node and dwc3 connector

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Message-ID: <20230526190222.2dyopipjz2llclus@ripper>
Date:   Fri, 26 May 2023 12:02:22 -0700
From:   Bjorn Andersson <andersson@...nel.org>
To:     Bhupesh Sharma <bhupesh.sharma@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, quic_schowdhu@...cinc.com,
        agross@...nel.org, konrad.dybcio@...aro.org,
        linux-kernel@...r.kernel.org, bhupesh.linux@...il.com,
        robh+dt@...nel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3] arm64: dts: qcom: sm6115: Add EUD dt node and dwc3
 connector

On Wed, Jan 04, 2023 at 03:42:28PM +0530, Bhupesh Sharma wrote:
> Add the Embedded USB Debugger(EUD) device tree node for
> SM6115 / SM4250 SoC.
> 
> The node contains EUD base register region, EUD mode manager
> register region and TCSR Check register region along with the
> interrupt entry.
> 
> Also add the typec connector node for EUD which is attached to
> EUD node via port. EUD is also attached to DWC3 node via port.
> 
> To enable the role switch, we need to set dr_mode = "otg" property
> for 'usb_dwc3' sub-node in the board dts file.
> 
> Also the EUD device can be enabled on a board once linux is boot'ed
> by setting:
>  $ echo 1 > /sys/bus/platform/drivers/qcom_eud/../enable
> 

I was under the impression that you where working on some updates to EUD
and was going to resend this, but I don't find a new version, and I
don't see an on-list reply from me.

So just to make sure this isn't lost any longer... Can you please respin
this to correct the dtc warnings?

Thanks,
Bjorn

> Cc: Souradeep Chowdhury <quic_schowdhu@...cinc.com>
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
> ---
> - v2 can be viewed here: https://lore.kernel.org/linux-arm-msm/20230104052047.3945983-1-bhupesh.sharma@linaro.org
> - In v3, fix the errors reported by '$ make dtbs_check' for the port sub node:
>   ports:
>     'oneOf' conditional failed, one must be fixed:
>         'port' is a required property
>         '#address-cells' is a required property
>         '#size-cells' is a required property
> - This patch is based on my earlier sm6115 usb related changes, which can
>   be seen here:
>   https://lore.kernel.org/linux-arm-msm/20221215094532.589291-1-bhupesh.sharma@linaro.org/
> - This patch is also dependent on my sm6115 eud dt-binding and driver changes
>   (v2) sent earlier, which can be seen here:
>   https://lore.kernel.org/linux-arm-msm/20230103150419.3923421-1-bhupesh.sharma@linaro.org/
> 
>  arch/arm64/boot/dts/qcom/sm6115.dtsi | 46 ++++++++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6115.dtsi b/arch/arm64/boot/dts/qcom/sm6115.dtsi
> index 030763187cc3f..a1a4f659587f3 100644
> --- a/arch/arm64/boot/dts/qcom/sm6115.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm6115.dtsi
> @@ -170,6 +170,18 @@ core3 {
>  		};
>  	};
>  
> +	eud_typec: connector {
> +		compatible = "usb-c-connector";
> +
> +		ports {
> +			port@0 {
> +				con_eud: endpoint {
> +					remote-endpoint = <&eud_con>;
> +				};
> +			};
> +		};
> +	};
> +
>  	firmware {
>  		scm: scm {
>  			compatible = "qcom,scm-sm6115", "qcom,scm";
> @@ -565,6 +577,33 @@ gcc: clock-controller@...0000 {
>  			#power-domain-cells = <1>;
>  		};
>  
> +		eud: eud@...0000 {
> +			compatible = "qcom,sm6115-eud", "qcom,eud";
> +			reg = <0x01610000 0x2000>,
> +			      <0x01612000 0x1000>,
> +			      <0x003e5018 0x4>;
> +			interrupts = <GIC_SPI 189 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				port@0 {
> +					reg = <0>;
> +					eud_ep: endpoint {
> +						remote-endpoint = <&usb2_role_switch>;
> +					};
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +					eud_con: endpoint {
> +						remote-endpoint = <&con_eud>;
> +					};
> +				};
> +			};
> +		};
> +
>  		usb_hsphy: phy@...3000 {
>  			compatible = "qcom,sm6115-qusb2-phy";
>  			reg = <0x01613000 0x180>;
> @@ -1064,6 +1103,13 @@ usb_dwc3: usb@...0000 {
>  				snps,has-lpm-erratum;
>  				snps,hird-threshold = /bits/ 8 <0x10>;
>  				snps,usb3_lpm_capable;
> +				usb-role-switch;
> +
> +				port {
> +					usb2_role_switch: endpoint {
> +						remote-endpoint = <&eud_ep>;
> +					};
> +				};
>  			};
>  		};
>  
> -- 
> 2.38.1
>