Re: [PATCH v2 10/12] arm64: dts: qcom: sm8350: Add display system nodes

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On 29/11/2022 18:47, Robert Foss wrote:
On Tue, 15 Nov 2022 at 14:47, Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> 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@xxxxxxxxxx>
---
   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@a800000 {
                       };
               };

+             mdss: mdss@ae00000 {
+                     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@ae01000 {
+                             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@ae94000 {
+                             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@ae94400 {
+                             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@af00000 {
                       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@af00000 {
                       #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@17300000 {

--
With best wishes
Dmitry




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