linux-kernel - Re: [PATCH v2 6/6] arm64: dts: sdm845: Redefine interconnect provider DT nodes

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Date:   Tue, 4 Feb 2020 10:18:34 -0800
From:   Evan Green <evgreen@...gle.com>
To:     David Dai <daidavid1@...eaurora.org>
Cc:     Georgi Djakov <georgi.djakov@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, sboyd@...nel.org,
        Lina Iyer <ilina@...eaurora.org>,
        Sean Sweeney <seansw@....qualcomm.com>,
        Alex Elder <elder@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v2 6/6] arm64: dts: sdm845: Redefine interconnect provider
 DT nodes

On Thu, Jan 9, 2020 at 8:33 PM David Dai <daidavid1@...eaurora.org> wrote:
>
> Add the DT nodes for each of the Network-On-Chip interconnect
> buses found on SDM845 based platform and redefine the rsc_hlos
> child node as a bcm-voter device to better represent the hardware.
>
> Signed-off-by: David Dai <daidavid1@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm845.dtsi | 61 ++++++++++++++++++++++++++++++++++--
>  1 file changed, 58 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index ddb1f23..7c617a9 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -1364,6 +1364,55 @@
>                         interrupts = <GIC_SPI 582 IRQ_TYPE_LEVEL_HIGH>;
>                 };
>
> +               mem_noc: interconnect@...0000 {
> +                       compatible = "qcom,sdm845-mem-noc";
> +                       reg = <0 0x01380000 0 0x27200>;
> +                       #interconnect-cells = <1>;
> +                       qcom,bcm-voters = <&apps_bcm_voter>;
> +               };
> +
> +               dc_noc: interconnect@...0000 {
> +                       compatible = "qcom,sdm845-dc-noc";
> +                       reg = <0 0x014e0000 0 0x400>;
> +                       #interconnect-cells = <1>;
> +                       qcom,bcm-voters = <&apps_bcm_voter>;
> +               };
> +
> +               config_noc: interconnect@...0000 {
> +                       compatible = "qcom,sdm845-config-noc";
> +                       reg = <0 0x01500000 0 0x5080>;
> +                       #interconnect-cells = <1>;
> +                       qcom,bcm-voters = <&apps_bcm_voter>;
> +               };
> +
> +               system_noc: interconnect@...0000 {
> +                       compatible = "qcom,sdm845-system-noc";
> +                       reg = <0 0x01620000 0 0x18080>;
> +                       #interconnect-cells = <1>;
> +                       qcom,bcm-voters = <&apps_bcm_voter>;
> +               };
> +
> +               aggre1_noc: interconnect@...0000 {
> +                       compatible = "qcom,sdm845-aggre1-noc";
> +                       reg = <0 0x016e0000 0 0xd080>;
> +                       #interconnect-cells = <1>;
> +                       qcom,bcm-voters = <&apps_bcm_voter>;
> +               };
> +
> +               aggre2_noc: interconnect@...0000 {
> +                       compatible = "qcom,sdm845-aggre2-noc";
> +                       reg = <0 0x01700000 0 0x3b100>;
> +                       #interconnect-cells = <1>;
> +                       qcom,bcm-voters = <&apps_bcm_voter>;
> +               };
> +
> +               mmss_noc: interconnect@...0000 {
> +                       compatible = "qcom,sdm845-mmss-noc";
> +                       reg = <0 0x01740000 0 0x1c1000>;
> +                       #interconnect-cells = <1>;
> +                       qcom,bcm-voters = <&apps_bcm_voter>;
> +               };
> +
>                 ufs_mem_hc: ufshc@...4000 {
>                         compatible = "qcom,sdm845-ufshc", "qcom,ufshc",
>                                      "jedec,ufs-2.0";
> @@ -3100,6 +3149,13 @@
>                         #mbox-cells = <1>;
>                 };
>
> +               gladiator_noc: interconnect@...00000 {
> +                       compatible = "qcom,sdm845-gladiator-noc";
> +                       reg = <0 0x17900000 0 0xd080>;
> +                       #interconnect-cells = <1>;
> +                       qcom,bcm-voters = <&apps_bcm_voter>;
> +               };
> +
>                 apps_rsc: rsc@...c0000 {
>                         label = "apps_rsc";
>                         compatible = "qcom,rpmh-rsc";
> @@ -3174,9 +3230,8 @@
>                                 };
>                         };
>
> -                       rsc_hlos: interconnect {
> -                               compatible = "qcom,sdm845-rsc-hlos";
> -                               #interconnect-cells = <1>;

With this reworking of the bindings the examples in these files are now broken:
Documentation/devicetree/bindings/display/msm/gpu.txt
Documentation/devicetree/bindings/display/msm/dpu.txt

It would be nice to fix them up in a subsequent change.
-Evan