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SubjectRe: [PATCH v2 17/17] arm64: dts: sdm845: add IPA information
On Wed 11 Mar 07:39 PDT 2020, Alex Elder wrote:

> On 3/11/20 5:49 AM, Jon Hunter wrote:
> >
> > On 06/03/2020 04:28, Alex Elder wrote:
> >> Add IPA-related nodes and definitions to "sdm845.dtsi".
> >>
> >> Signed-off-by: Alex Elder <elder@linaro.org>
> >> ---
> >> arch/arm64/boot/dts/qcom/sdm845.dtsi | 51 ++++++++++++++++++++++++++++
> >> 1 file changed, 51 insertions(+)
> >>
> >> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> >> index d42302b8889b..58fd1c611849 100644
> >> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> >> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> >> @@ -675,6 +675,17 @@
> >> interrupt-controller;
> >> #interrupt-cells = <2>;
> >> };
> >> +
> >> + ipa_smp2p_out: ipa-ap-to-modem {
> >> + qcom,entry-name = "ipa";
> >> + #qcom,smem-state-cells = <1>;
> >> + };
> >> +
> >> + ipa_smp2p_in: ipa-modem-to-ap {
> >> + qcom,entry-name = "ipa";
> >> + interrupt-controller;
> >> + #interrupt-cells = <2>;
> >> + };
> >> };
> >>
> >> smp2p-slpi {
> >> @@ -1435,6 +1446,46 @@
> >> };
> >> };
> >>
> >> + ipa@1e40000 {
> >> + compatible = "qcom,sdm845-ipa";
> >> +
> >> + modem-init;
> >> + modem-remoteproc = <&mss_pil>;
> >> +
> >> + reg = <0 0x1e40000 0 0x7000>,
> >> + <0 0x1e47000 0 0x2000>,
> >> + <0 0x1e04000 0 0x2c000>;
> >> + reg-names = "ipa-reg",
> >> + "ipa-shared",
> >> + "gsi";
> >> +
> >> + interrupts-extended =
> >> + <&intc 0 311 IRQ_TYPE_EDGE_RISING>,
> >> + <&intc 0 432 IRQ_TYPE_LEVEL_HIGH>,
> >> + <&ipa_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
> >> + <&ipa_smp2p_in 1 IRQ_TYPE_EDGE_RISING>;
> >> + interrupt-names = "ipa",
> >> + "gsi",
> >> + "ipa-clock-query",
> >> + "ipa-setup-ready";
> >> +
> >> + clocks = <&rpmhcc RPMH_IPA_CLK>;
> >> + clock-names = "core";
> >> +
> >> + interconnects =
> >> + <&rsc_hlos MASTER_IPA &rsc_hlos SLAVE_EBI1>,
> >> + <&rsc_hlos MASTER_IPA &rsc_hlos SLAVE_IMEM>,
> >> + <&rsc_hlos MASTER_APPSS_PROC &rsc_hlos SLAVE_IPA_CFG>;
> >> + interconnect-names = "memory",
> >> + "imem",
> >> + "config";
> >> +
> >> + qcom,smem-states = <&ipa_smp2p_out 0>,
> >> + <&ipa_smp2p_out 1>;
> >> + qcom,smem-state-names = "ipa-clock-enabled-valid",
> >> + "ipa-clock-enabled";
> >> + };
> >> +
> >> tcsr_mutex_regs: syscon@1f40000 {
> >> compatible = "syscon";
> >> reg = <0 0x01f40000 0 0x40000>;
> >>
> >
> >
> > This change is causing the following build error on today's -next ...
> >
> > DTC arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dtb
> > arch/arm64/boot/dts/qcom/sdm845.dtsi:1710.15-1748.5: ERROR (phandle_references): /soc@0/ipa@1e40000: Reference to non-existent node or label "rsc_hlos"
>
> This problem arises because a commit in the Qualcomm SoC tree affects
> "arch/arm64/boot/dts/qcom/sdm845.dtsi", changing the interconnect provider
> node(s) used by IPA:
> b303f9f0050b arm64: dts: sdm845: Redefine interconnect provider DT nodes
>
> I will send out a patch today that updates the IPA node in "sdm845.dtsi"
> to correct that.
>
> In the mean time, David, perhaps you should revert this change in net-next:
> 9cc5ae125f0e arm64: dts: sdm845: add IPA information
> and let me work out fixing "sdm845.dtsi" with Andy and Bjorn in the
> Qualcomm tree.
>

Reverting this in net-next and applying it in our tree sounds like the
easiest path forward, and avoids further conflicts down the road.

David, are you onboard with this?

Regards,
Bjorn

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