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Message-ID: <a1046ae6-cffb-2dbf-0bfd-3787eafe9a0d@linaro.org>
Date: Tue, 29 Nov 2022 21:59:05 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Robert Foss <robert.foss@...aro.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: robdclark@...il.com, quic_abhinavk@...cinc.com, sean@...rly.run,
airlied@...ux.ie, daniel@...ll.ch, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, agross@...nel.org,
bjorn.andersson@...aro.org, quic_kalyant@...cinc.com,
swboyd@...omium.org, angelogioacchino.delregno@...ainline.org,
loic.poulain@...aro.org, quic_khsieh@...cinc.com,
quic_vpolimer@...cinc.com, vkoul@...nel.org, dianders@...omium.org,
linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Jonathan Marek <jonathan@...ek.ca>,
vinod.koul@...aro.org, quic_jesszhan@...cinc.com,
andersson@...nel.org
Subject: Re: [PATCH v2 10/12] arm64: dts: qcom: sm8350: Add display system
nodes
On 29/11/2022 18:47, Robert Foss wrote:
> On Tue, 15 Nov 2022 at 14:47, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>>
>>
>>
>> On 15/11/2022 14:31, Robert Foss wrote:
>>> Add mdss, mdss_mdp, dsi0, dsi0_phy nodes. With these
>>> nodes the display subsystem is configured to support
>>> one DSI output.
>>>
>>> Signed-off-by: Robert Foss <robert.foss@...aro.org>
>>> ---
>>> arch/arm64/boot/dts/qcom/sm8350.dtsi | 197 ++++++++++++++++++++++++++-
>>> 1 file changed, 193 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/sm8350.dtsi b/arch/arm64/boot/dts/qcom/sm8350.dtsi
>>> index 434f8e8b12c1..5c98e5cf5ad0 100644
>>> --- a/arch/arm64/boot/dts/qcom/sm8350.dtsi
>>> +++ b/arch/arm64/boot/dts/qcom/sm8350.dtsi
>>> @@ -3,6 +3,7 @@
>>> * Copyright (c) 2020, Linaro Limited
>>> */
>>>
>>> +#include <dt-bindings/interconnect/qcom,sm8350.h>
>>> #include <dt-bindings/interrupt-controller/arm-gic.h>
>>> #include <dt-bindings/clock/qcom,dispcc-sm8350.h>
>>> #include <dt-bindings/clock/qcom,gcc-sm8350.h>
>>> @@ -2536,14 +2537,201 @@ usb_2_dwc3: usb@...0000 {
>>> };
>>> };
>>>
>>> + mdss: mdss@...0000 {
>>> + compatible = "qcom,sm8350-mdss";
>>> + reg = <0 0x0ae00000 0 0x1000>;
>>> + reg-names = "mdss";
>>> +
>>> + interconnects = <&mmss_noc MASTER_MDP0 0 &mc_virt SLAVE_EBI1 0>,
>>> + <&mmss_noc MASTER_MDP1 0 &mc_virt SLAVE_EBI1 0>;
>>> + interconnect-names = "mdp0-mem", "mdp1-mem";
>>> +
>>> + power-domains = <&dispcc MDSS_GDSC>;
>>> + resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
>>> +
>>> + clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
>>> + <&gcc GCC_DISP_HF_AXI_CLK>,
>>> + <&gcc GCC_DISP_SF_AXI_CLK>,
>>> + <&dispcc DISP_CC_MDSS_MDP_CLK>;
>>> + clock-names = "iface", "bus", "nrt_bus", "core";
>>> +
>>> + interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
>>> + interrupt-controller;
>>> + #interrupt-cells = <1>;
>>> +
>>> + iommus = <&apps_smmu 0x820 0x402>;
>>> +
>>> + status = "disabled";
>>> +
>>> + #address-cells = <2>;
>>> + #size-cells = <2>;
>>> + ranges;
>>> +
>>> + mdss_mdp: display-controller@...1000 {
>>> + compatible = "qcom,sm8350-dpu";
>>> + reg = <0 0x0ae01000 0 0x8f000>,
>>> + <0 0x0aeb0000 0 0x2008>;
>>> + reg-names = "mdp", "vbif";
>>> +
>>> + clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
>>> + <&gcc GCC_DISP_SF_AXI_CLK>,
>>> + <&dispcc DISP_CC_MDSS_AHB_CLK>,
>>> + <&dispcc DISP_CC_MDSS_MDP_LUT_CLK>,
>>> + <&dispcc DISP_CC_MDSS_MDP_CLK>,
>>> + <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
>>> + clock-names = "bus",
>>> + "nrt_bus",
>>> + "iface",
>>> + "lut",
>>> + "core",
>>> + "vsync";
>>> +
>>> + assigned-clocks = <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
>>> + assigned-clock-rates = <19200000>;
>>> +
>>> + operating-points-v2 = <&mdp_opp_table>;
>>> + power-domains = <&rpmhpd SM8350_MMCX>;
>>> +
>>> + interrupt-parent = <&mdss>;
>>> + interrupts = <0>;
>>> +
>>> + status = "disabled";
>> It doesn't make sense to disable mdp separately, as mdss is essentially
>> useless without it.
>
> Ack
>
>>
>>> +
>>> + ports {
>>> + #address-cells = <1>;
>>> + #size-cells = <0>;
>>> +
>>> + port@0 {
>>> + reg = <0>;
>>> + dpu_intf1_out: endpoint {
>>> + remote-endpoint = <&dsi0_in>;
>>> + };
>>> + };
>>> + };
>>> +
>>> + mdp_opp_table: opp-table {
>>> + compatible = "operating-points-v2";
>>> +
>>> + opp-200000000 {
>>> + opp-hz = /bits/ 64 <200000000>;
>>> + required-opps = <&rpmhpd_opp_low_svs>;
>>> + };
>>> +
>>> + opp-300000000 {
>>> + opp-hz = /bits/ 64 <300000000>;
>>> + required-opps = <&rpmhpd_opp_svs>;
>>> + };
>>> +
>>> + opp-345000000 {
>>> + opp-hz = /bits/ 64 <345000000>;
>>> + required-opps = <&rpmhpd_opp_svs_l1>;
>>> + };
>>> +
>>> + opp-460000000 {
>>> + opp-hz = /bits/ 64 <460000000>;
>>> + required-opps = <&rpmhpd_opp_nom>;
>>> + };
>>> + };
>>> + };
>>> +
>>> + dsi0: dsi@...4000 {
>>> + compatible = "qcom,mdss-dsi-ctrl";
>>> + reg = <0 0x0ae94000 0 0x400>;
>>> + reg-names = "dsi_ctrl";
>>> +
>>> + interrupt-parent = <&mdss>;
>>> + interrupts = <4>;
>>> +
>>> + clocks = <&dispcc DISP_CC_MDSS_BYTE0_CLK>,
>>> + <&dispcc DISP_CC_MDSS_BYTE0_INTF_CLK>,
>>> + <&dispcc DISP_CC_MDSS_PCLK0_CLK>,
>>> + <&dispcc DISP_CC_MDSS_ESC0_CLK>,
>>> + <&dispcc DISP_CC_MDSS_AHB_CLK>,
>>> + <&gcc GCC_DISP_HF_AXI_CLK>;
>>> + clock-names = "byte",
>>> + "byte_intf",
>>> + "pixel",
>>> + "core",
>>> + "iface",
>>> + "bus";
>>> +
>>> + assigned-clocks = <&dispcc DISP_CC_MDSS_BYTE0_CLK_SRC>,
>>> + <&dispcc DISP_CC_MDSS_PCLK0_CLK_SRC>;
>>> + assigned-clock-parents = <&dsi0_phy 0>,
>>> + <&dsi0_phy 1>;
>>> +
>>> + operating-points-v2 = <&dsi_opp_table>;
>>> + power-domains = <&rpmhpd SM8350_MMCX>;
>>> +
>>> + phys = <&dsi0_phy>;
>>> + phy-names = "dsi";
>> I think that was dropped as of late.
>
> Ack
>
>>
>>> +
>>> + status = "disabled";
>>> +
>>> + ports {
>>> + #address-cells = <1>;
>>> + #size-cells = <0>;
>>> +
>>> + port@0 {
>>> + reg = <0>;
>>> + dsi0_in: endpoint {
>>> + remote-endpoint = <&dpu_intf1_out>;
>>> + };
>>> + };
>>> +
>>> + port@1 {
>>> + reg = <1>;
>>> + dsi0_out: endpoint {
>>> + };
>>> + };
>>> + };
>>> + };
>>> +
>>> + dsi0_phy: phy@...4400 {
>>> + compatible = "qcom,dsi-phy-5nm-8350";
>>> + reg = <0 0x0ae94400 0 0x200>,
>>> + <0 0x0ae94600 0 0x280>,
>>> + <0 0x0ae94900 0 0x260>;
>>> + reg-names = "dsi_phy",
>>> + "dsi_phy_lane",
>>> + "dsi_pll";
>>> +
>>> + #clock-cells = <1>;
>>> + #phy-cells = <0>;
>>> +
>>> + clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
>>> + <&rpmhcc RPMH_CXO_CLK>;
>>> + clock-names = "iface", "ref";
>>> +
>>> + status = "disabled";
>>> +
>>> + dsi_opp_table: dsi-opp-table {
>>> + compatible = "operating-points-v2";
>>> +
>>> + opp-187500000 {
>>> + opp-hz = /bits/ 64 <187500000>;
>>> + required-opps = <&rpmhpd_opp_low_svs>;
>>> + };
>>> +
>>> + opp-300000000 {
>>> + opp-hz = /bits/ 64 <300000000>;
>>> + required-opps = <&rpmhpd_opp_svs>;
>>> + };
>>> +
>>> + opp-358000000 {
>>> + opp-hz = /bits/ 64 <358000000>;
>>> + required-opps = <&rpmhpd_opp_svs_l1>;
>>> + };
>>> + };
>>> + };
>>> + };
>>> +
>>> dispcc: clock-controller@...0000 {
>>> compatible = "qcom,sm8350-dispcc";
>>> reg = <0 0x0af00000 0 0x10000>;
>>> clocks = <&rpmhcc RPMH_CXO_CLK>,
>>> - <0>,
>>> - <0>,
>>> - <0>,
>>> - <0>,
>>> + <&dsi0_phy 0>, <&dsi0_phy 1>,
>>> + <0>, <0>,
>>> <0>,
>>> <0>;
>>> clock-names = "bi_tcxo",
>>> @@ -2558,6 +2746,7 @@ dispcc: clock-controller@...0000 {
>>> #power-domain-cells = <1>;
>>>
>>> power-domains = <&rpmhpd SM8350_MMCX>;
>>> + required-opps = <&rpmhpd_opp_turbo>;
>> A turbo vote is required for it to function? Seems a bit high..
>
> Dmitry hit a snag using &rpmhpd_opp_low_svs, so this was a dummy
> value. I can't replicate that issue, but am having a conversation with
> him off-list about this.
>
> On my sm8350-hdk board &rpmhpd_opp_low_svs is working fine.
Maybe this is related to the bootloader setting up the mode or maybe it
was caused by the fact that I have the drm_msm set up as built-in rather
than a module.
>
>>
>> Konrad
>>> };
>>>
>>> adsp: remoteproc@...00000 {
--
With best wishes
Dmitry
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