linux-kernel - Re: [PATCH v2 2/3] arm64: dts: qcom: pm7250b: Add a TCPM description

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Message-ID: <rjhf6pzdcw6zjneosshvg4d6ov5twxndya7q2btf3tnj5yy3fs@zzu6rfg6wzlu>
Date: Mon, 27 May 2024 12:16:27 -0500
From: Bjorn Andersson <andersson@...nel.org>
To: Luca Weiss <luca.weiss@...rphone.com>
Cc: Konrad Dybcio <konrad.dybcio@...aro.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
	Conor Dooley <conor+dt@...nel.org>, ~postmarketos/upstreaming@...ts.sr.ht, 
	phone-devel@...r.kernel.org, linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Subject: Re: [PATCH v2 2/3] arm64: dts: qcom: pm7250b: Add a TCPM description

On Fri, Mar 29, 2024 at 01:26:20PM GMT, Luca Weiss wrote:
> Type-C port management functionality lives inside of the PMIC block on
> pm7250b.
> 
> The Type-C port management logic controls orientation detection,
> vbus/vconn sense and to send/receive Type-C Power Domain messages.
> 

pm7250b is found in devices where USB Type-C port management is
performed in firmware, presumably using this hardware block.

As such, it seems reasonable to leave this node disabled and only enable
it on the targets that doesn't do this in firmware.

Regards,
Bjorn

> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
> ---
>  arch/arm64/boot/dts/qcom/pm7250b.dtsi | 39 +++++++++++++++++++++++++++++++++++
>  1 file changed, 39 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/pm7250b.dtsi b/arch/arm64/boot/dts/qcom/pm7250b.dtsi
> index 4faed25a787f..0205c2669093 100644
> --- a/arch/arm64/boot/dts/qcom/pm7250b.dtsi
> +++ b/arch/arm64/boot/dts/qcom/pm7250b.dtsi
> @@ -51,6 +51,45 @@ pm7250b_vbus: usb-vbus-regulator@...0 {
>  			status = "disabled";
>  		};
>  
> +		pm7250b_typec: typec@...0 {
> +			compatible = "qcom,pm7250b-typec", "qcom,pm8150b-typec";
> +			reg = <0x1500>,
> +			      <0x1700>;
> +			interrupts = <PM7250B_SID 0x15 0x00 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x15 0x01 IRQ_TYPE_EDGE_BOTH>,
> +				     <PM7250B_SID 0x15 0x02 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x15 0x03 IRQ_TYPE_EDGE_BOTH>,
> +				     <PM7250B_SID 0x15 0x04 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x15 0x05 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x15 0x06 IRQ_TYPE_EDGE_BOTH>,
> +				     <PM7250B_SID 0x15 0x07 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x17 0x00 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x17 0x01 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x17 0x02 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x17 0x03 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x17 0x04 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x17 0x05 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x17 0x06 IRQ_TYPE_EDGE_RISING>,
> +				     <PM7250B_SID 0x17 0x07 IRQ_TYPE_EDGE_RISING>;
> +			interrupt-names = "or-rid-detect-change",
> +					  "vpd-detect",
> +					  "cc-state-change",
> +					  "vconn-oc",
> +					  "vbus-change",
> +					  "attach-detach",
> +					  "legacy-cable-detect",
> +					  "try-snk-src-detect",
> +					  "sig-tx",
> +					  "sig-rx",
> +					  "msg-tx",
> +					  "msg-rx",
> +					  "msg-tx-failed",
> +					  "msg-tx-discarded",
> +					  "msg-rx-discarded",
> +					  "fr-swap";
> +			vdd-vbus-supply = <&pm7250b_vbus>;
> +		};
> +
>  		pm7250b_temp: temp-alarm@...0 {
>  			compatible = "qcom,spmi-temp-alarm";
>  			reg = <0x2400>;
> 
> -- 
> 2.44.0
>