linux-kernel - Re: [PATCH 3/2] arm64: dts: qcom: sc7180: Remove ipa interconnect node

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Message-ID: <Yl92UkRwlQsd71mr@ripper>
Date:   Tue, 19 Apr 2022 19:56:18 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        Doug Anderson <dianders@...omium.org>,
        Alex Elder <elder@...aro.org>,
        Taniya Das <quic_tdas@...cinc.com>,
        Mike Tipton <quic_mdtipton@...cinc.com>,
        Georgi Djakov <djakov@...nel.org>
Subject: Re: [PATCH 3/2] arm64: dts: qcom: sc7180: Remove ipa interconnect
 node

On Thu 14 Apr 17:58 PDT 2022, Stephen Boyd wrote:

> This device node is unused now that we've removed the driver that
> consumed it in the kernel. Drop the unused node to save some space.
> 

I'm expecting that merging patch 3 and 4 will work, but cause sync_state
to not happen until the driver changes are merged.

Can you confirm my expectation? And perhaps confirm that it's fine for
Georgi to pick the driver changes independently of the dts changes...

Regards,
Bjorn

> Cc: Alex Elder <elder@...aro.org>
> Cc: Taniya Das <quic_tdas@...cinc.com>
> Cc: Mike Tipton <quic_mdtipton@...cinc.com>
> Cc: Georgi Djakov <djakov@...nel.org>
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 7 -------
>  1 file changed, 7 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index e1c46b80f14a..1ff96ef30e3f 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -1421,13 +1421,6 @@ mmss_noc: interconnect@...0000 {
>  			qcom,bcm-voters = <&apps_bcm_voter>;
>  		};
>  
> -		ipa_virt: interconnect@...0000 {
> -			compatible = "qcom,sc7180-ipa-virt";
> -			reg = <0 0x01e00000 0 0x1000>;
> -			#interconnect-cells = <2>;
> -			qcom,bcm-voters = <&apps_bcm_voter>;
> -		};
> -
>  		ipa: ipa@...0000 {
>  			compatible = "qcom,sc7180-ipa";
>  
> -- 
> https://chromeos.dev
>