On 05/12/2022 18:37, 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.f...@linaro.org>
---
  arch/arm64/boot/dts/qcom/sm8350.dtsi | 199 ++++++++++++++++++++++++++-
  1 file changed, 195 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8350.dtsi 
b/arch/arm64/boot/dts/qcom/sm8350.dtsi
index 434f8e8b12c1..fb1c616c5e89 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 +2537,203 @@ usb_2_dwc3: usb@a800000 {
                        };
                };
+ mdss: mdss@ae00000 {

display-sybsystem@

I also had this issue in sm8450.dtsi (and I'm going to fix it in the next revision).


+                       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>;
+
+                               ports {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+
+                                       port@0 {
+                                               reg = <0>;
+                                               dpu_intf1_out: endpoint {
+                                                       remote-endpoint = 
<&dsi0_in>;
+                                               };
+                                       };
+                               };
+                       };
+
+                       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>;
+
+                               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 {
+                                               };
+                                       };
+                               };
+
+                               mdp_opp_table: opp-table {

The mdp (dpu?) opp table belongs to the display-controller node.

+                                       compatible = "operating-points-v2";
+
+                                       /* TODO: opp-200000000 should work with
+                                        * &rpmhpd_opp_low_svs, but one some of
+                                        * sm8350_hdk boards reboot using this
+                                        * opp.
+                                        */
+                                       opp-200000000 {
+                                               opp-hz = /bits/ 64 <200000000>;
+                                               required-opps = 
<&rpmhpd_opp_svs>;
+                                       };
+

I have been changing the dsi's opp table, not this one.

+                                       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_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 {

And this table should go to dsi node.

+                                       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>,

Let's probably add both DSI controllers and DSI PHYs. It's fine if you can not verify the second one for real.

                                 <0>,
                                 <0>;
                        clock-names = "bi_tcxo",
@@ -2558,6 +2748,7 @@ dispcc: clock-controller@af00000 {
                        #power-domain-cells = <1>;
power-domains = <&rpmhpd SM8350_MMCX>;
+                       required-opps = <&rpmhpd_opp_low_svs>;

As it's not a turbo level anymore, can we drop it completely?

                };
adsp: remoteproc@17300000 {

--
With best wishes
Dmitry

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