[PATCH v4 0/4] Display enablement changes for Qualcomm QCS8300 platform

[PATCH v4 0/4] Display enablement changes for Qualcomm QCS8300 platform

[Yongxing Mou]

This series introduces support to enable the Mobile Display Subsystem (MDSS)
, Display Processing Unit (DPU), DisplayPort controller for the Qualcomm 
QCS8300 target. It includes the addition of the hardware catalog, compatible
string, and their YAML bindings.

Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
---
Changes in v4:Fixed review comments from Krzysztof, Dmitry.
- Use the common style for the dt-bindings commits.[Dmitry]
- Update the commits msg for the mdss binding patch, explain why they
  reuse different platform drivers.[Krzysztof]
- Link to v3: https://lore.kernel.org/r/20250113-mdssdt_qcs8300-v3-0-6c8e93459600@quicinc.com

Changes in v3:Fixed review comments from Krzysztof, Dmitry.
- Fix the missing space issue in commit message.[Krzysztof]
- Separate the patch for the phy from this series.[Dmitry]
- Remove unused dependencies and update in the cover letter.[Dmitry][Krzysztof]
- Link to v2: https://lore.kernel.org/r/20241226-mdssdt_qcs8300-v2-0-acba0db533ce@quicinc.com

Changes in v2:Fixed review comments from Krzysztof, Dmitry, Rob.
- Decouple the devicetree changes from this series.[Dmitry][Krzysztof]
- Drop the dpu driver changes and reuse SA8775P DPU driver.[Dmitry]
- Fix compilation issues in MDSS bindings.[Rob][Krzysztof]
- Correct formatting errors and remove unnecessary status in MDSS
  bindings.[Krzysztof]
- Add the the necessary information in MDSS changes commit msg.[Dmitry]
- Rebase MDSS driver changes to https://lore.kernel.org/dri-devel/
  20241127-msm-mdss-ubwc-v3-0-9782a7c2b023@linaro.org/.[Dmitry]
- Package the DisplayPort controller and eDP PHY bindings document to
  this patch series.
- Collecting MDSS changes reviewd-by Dmitry.
- Reuse the sa8775p eDP PHY as a fallback compat.[Dmitry]
- Reuse the sm8650 DP controller as a fallback compat.[Dmitry]
- Link to v1: https://lore.kernel.org/r/20241127-mdss_qcs8300-v1-0-29b2c3ee95b8@quicinc.com
~

---
Yongxing Mou (4):
      dt-bindings: display/msm: Document the DPU for QCS8300
      dt-bindings: display/msm: Document the dp-controller for QCS8300
      dt-bindings: display/msm: Document MDSS on QCS8300
      drm/msm: mdss: Add QCS8300 support

 .../bindings/display/msm/dp-controller.yaml        |   4 +
 .../bindings/display/msm/qcom,qcs8300-mdss.yaml    | 244 +++++++++++++++++++++
 .../bindings/display/msm/qcom,sm8650-dpu.yaml      |  13 +-
 drivers/gpu/drm/msm/msm_mdss.c                     |  11 +
 4 files changed, 268 insertions(+), 4 deletions(-)
---
base-commit: 2b88851f583d3c4e40bcd40cfe1965241ec229dd
change-id: 20241224-mdssdt_qcs8300-11b7883dc60b

Best regards,
-- 
Yongxing Mou <quic_yongmou@quicinc.com>

[PATCH v4 1/4] dt-bindings: display/msm: Document the DPU for QCS8300

[Yongxing Mou]

Document the DPU for Qualcomm QCS8300 platform. It use the same DPU
hardware with SA8775P and reuse it's driver.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
---
 .../devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml    | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml
index 01cf79bd754b491349c52c5aef49ba06e835d0bf..61ec4dd029a8de3b0e78fc97c6c0a602f84027ff 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml
@@ -13,10 +13,15 @@ $ref: /schemas/display/msm/dpu-common.yaml#
 
 properties:
   compatible:
-    enum:
-      - qcom,sa8775p-dpu
-      - qcom,sm8650-dpu
-      - qcom,x1e80100-dpu
+    oneOf:
+      - enum:
+          - qcom,sa8775p-dpu
+          - qcom,sm8650-dpu
+          - qcom,x1e80100-dpu
+      - items:
+          - enum:
+              - qcom,qcs8300-dpu
+          - const: qcom,sa8775p-dpu
 
   reg:
     items:

-- 
2.34.1

[PATCH v4 2/4] dt-bindings: display/msm: Document the dp-controller for QCS8300

[Yongxing Mou]

Add compatible string for the DisplayPort controller found on the
Qualcomm QCS8300 platform.QCS8300 only support one DisplayPort
controller and have the same base offset with sm8650, so we reuse
the sm8650 DisplayPort driver.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
---
 Documentation/devicetree/bindings/display/msm/dp-controller.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
index e00b88332f2fed2fc33f6d72c5cc3d827cd7594e..3df6f9e278275d8e19fafb4a397d776e0c606c7c 100644
--- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
@@ -37,6 +37,10 @@ properties:
               - qcom,sm8450-dp
               - qcom,sm8550-dp
           - const: qcom,sm8350-dp
+      - items:
+          - enum:
+              - qcom,qcs8300-dp
+          - const: qcom,sm8650-dp
 
   reg:
     minItems: 4

-- 
2.34.1

[PATCH v4 3/4] dt-bindings: display/msm: Document MDSS on QCS8300

[Yongxing Mou]

Document the MDSS hardware found on the Qualcomm QCS8300 platform.
QCS8300 use the same DPU hardware version as SA8775P, so we reuse it's
driver. But QCS8300 only have one DP controller, and offset is same with
sm8650, so dp controller reuse the sm8650's driver.

Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
---
 .../bindings/display/msm/qcom,qcs8300-mdss.yaml    | 244 +++++++++++++++++++++
 1 file changed, 244 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/qcom,qcs8300-mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,qcs8300-mdss.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..eb7f36387f748793ebf662baded4a13a61b3ce39
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/msm/qcom,qcs8300-mdss.yaml
@@ -0,0 +1,244 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/msm/qcom,qcs8300-mdss.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. QCS8300 Display MDSS
+
+maintainers:
+  - Yongxing Mou <quic_yongmou@quicinc.com>
+
+description:
+  QCS8300 MSM Mobile Display Subsystem(MDSS), which encapsulates sub-blocks like
+  DPU display controller, DP interfaces and EDP etc.
+
+$ref: /schemas/display/msm/mdss-common.yaml#
+
+properties:
+  compatible:
+    const: qcom,qcs8300-mdss
+
+  clocks:
+    items:
+      - description: Display AHB
+      - description: Display hf AXI
+      - description: Display core
+
+  iommus:
+    maxItems: 1
+
+  interconnects:
+    maxItems: 3
+
+  interconnect-names:
+    maxItems: 3
+
+patternProperties:
+  "^display-controller@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        items:
+          - const: qcom,qcs8300-dpu
+          - const: qcom,sa8775p-dpu
+
+  "^displayport-controller@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        items:
+          - const: qcom,qcs8300-dp
+          - const: qcom,sm8650-dp
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interconnect/qcom,icc.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/qcom,qcs8300-gcc.h>
+    #include <dt-bindings/clock/qcom,sa8775p-dispcc.h>
+    #include <dt-bindings/interconnect/qcom,qcs8300-rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
+    #include <dt-bindings/power/qcom-rpmpd.h>
+
+    mdss: display-subsystem@ae00000 {
+        compatible = "qcom,qcs8300-mdss";
+        reg = <0x0ae00000 0x1000>;
+        reg-names = "mdss";
+
+        interconnects = <&mmss_noc MASTER_MDP0 QCOM_ICC_TAG_ACTIVE_ONLY
+                         &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+                        <&mmss_noc MASTER_MDP1 QCOM_ICC_TAG_ACTIVE_ONLY
+                         &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+                        <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+                         &config_noc SLAVE_DISPLAY_CFG QCOM_ICC_TAG_ACTIVE_ONLY>;
+        interconnect-names = "mdp0-mem",
+                             "mdp1-mem",
+                             "cpu-cfg";
+
+        resets = <&dispcc_core_bcr>;
+        power-domains = <&dispcc_gdsc>;
+
+        clocks = <&dispcc_ahb_clk>,
+                 <&gcc GCC_DISP_HF_AXI_CLK>,
+                 <&dispcc_mdp_clk>;
+
+        interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-controller;
+        #interrupt-cells = <1>;
+
+        iommus = <&apps_smmu 0x1000 0x402>;
+
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        display-controller@ae01000 {
+            compatible = "qcom,qcs8300-dpu", "qcom,sa8775p-dpu";
+            reg = <0x0ae01000 0x8f000>,
+                  <0x0aeb0000 0x2008>;
+            reg-names = "mdp", "vbif";
+
+            clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
+                     <&dispcc0 MDSS_DISP_CC_MDSS_AHB_CLK>,
+                     <&dispcc0 MDSS_DISP_CC_MDSS_MDP_LUT_CLK>,
+                     <&dispcc0 MDSS_DISP_CC_MDSS_MDP_CLK>,
+                     <&dispcc0 MDSS_DISP_CC_MDSS_VSYNC_CLK>;
+            clock-names = "nrt_bus",
+                          "iface",
+                          "lut",
+                          "core",
+                          "vsync";
+
+            assigned-clocks = <&dispcc0 MDSS_DISP_CC_MDSS_VSYNC_CLK>;
+            assigned-clock-rates = <19200000>;
+            operating-points-v2 = <&mdp_opp_table>;
+            power-domains = <&rpmhpd RPMHPD_MMCX>;
+
+            interrupt-parent = <&mdss>;
+            interrupts = <0>;
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                port@0 {
+                    reg = <0>;
+
+                    dpu_intf0_out: endpoint {
+                         remote-endpoint = <&mdss_dp0_in>;
+                    };
+                };
+            };
+
+            mdp_opp_table: opp-table {
+                compatible = "operating-points-v2";
+
+                opp-375000000 {
+                    opp-hz = /bits/ 64 <375000000>;
+                    required-opps = <&rpmhpd_opp_svs_l1>;
+                };
+
+                opp-500000000 {
+                    opp-hz = /bits/ 64 <500000000>;
+                    required-opps = <&rpmhpd_opp_nom>;
+                };
+
+                opp-575000000 {
+                    opp-hz = /bits/ 64 <575000000>;
+                    required-opps = <&rpmhpd_opp_turbo>;
+                };
+
+                opp-650000000 {
+                    opp-hz = /bits/ 64 <650000000>;
+                    required-opps = <&rpmhpd_opp_turbo_l1>;
+                };
+            };
+        };
+
+        displayport-controller@af54000 {
+            compatible = "qcom,qcs8300-dp", "qcom,sm8650-dp";
+
+            pinctrl-0 = <&dp_hot_plug_det>;
+            pinctrl-names = "default";
+
+            reg = <0xaf54000 0x104>,
+                  <0xaf54200 0x0c0>,
+                  <0xaf55000 0x770>,
+                  <0xaf56000 0x09c>,
+                  <0xaf57000 0x09c>;
+
+            interrupt-parent = <&mdss>;
+            interrupts = <12>;
+            clocks = <&dispcc0 MDSS_DISP_CC_MDSS_AHB_CLK>,
+                     <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_AUX_CLK>,
+                     <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_LINK_CLK>,
+                     <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_LINK_INTF_CLK>,
+                     <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_PIXEL0_CLK>;
+            clock-names = "core_iface",
+                          "core_aux",
+                          "ctrl_link",
+                          "ctrl_link_iface",
+                          "stream_pixel";
+            assigned-clocks = <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_LINK_CLK_SRC>,
+                              <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_PIXEL0_CLK_SRC>;
+            assigned-clock-parents = <&mdss_edp_phy 0>, <&mdss_edp_phy 1>;
+            phys = <&mdss_edp_phy>;
+            phy-names = "dp";
+            operating-points-v2 = <&dp_opp_table>;
+            power-domains = <&rpmhpd RPMHPD_MMCX>;
+
+            #sound-dai-cells = <0>;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+
+                    mdss_dp0_in: endpoint {
+                        remote-endpoint = <&dpu_intf0_out>;
+                    };
+                };
+
+                port@1 {
+                   reg = <1>;
+
+                   mdss_dp_out: endpoint { };
+                };
+            };
+
+            dp_opp_table: opp-table {
+                compatible = "operating-points-v2";
+
+                opp-160000000 {
+                    opp-hz = /bits/ 64 <160000000>;
+                    required-opps = <&rpmhpd_opp_low_svs>;
+                };
+
+                opp-270000000 {
+                    opp-hz = /bits/ 64 <270000000>;
+                    required-opps = <&rpmhpd_opp_svs>;
+                };
+
+                opp-540000000 {
+                    opp-hz = /bits/ 64 <540000000>;
+                    required-opps = <&rpmhpd_opp_svs_l1>;
+                };
+
+                opp-810000000 {
+                    opp-hz = /bits/ 64 <810000000>;
+                    required-opps = <&rpmhpd_opp_nom>;
+                };
+            };
+        };
+    };
+...

-- 
2.34.1

[PATCH v4 4/4] drm/msm: mdss: Add QCS8300 support

[Yongxing Mou]

Add Mobile Display Subsystem (MDSS) support for the QCS8300 platform.
Due to different memory type, it use different mdss_data with SA8775P
although using the same dpu.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
---
 drivers/gpu/drm/msm/msm_mdss.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c
index dcb49fd30402b80edd2cb5971f95a78eaad6081f..40c8b476763b8c39434b1448008cfa8ffac7a8ea 100644
--- a/drivers/gpu/drm/msm/msm_mdss.c
+++ b/drivers/gpu/drm/msm/msm_mdss.c
@@ -582,6 +582,16 @@ static const struct msm_mdss_data qcm2290_data = {
 	.reg_bus_bw = 76800,
 };
 
+static const struct msm_mdss_data qcs8300_data = {
+	.ubwc_enc_version = UBWC_4_0,
+	.ubwc_dec_version = UBWC_4_0,
+	.ubwc_swizzle = 6,
+	.ubwc_bank_spread = true,
+	.highest_bank_bit = 3,
+	.macrotile_mode = true,
+	.reg_bus_bw = 74000,
+};
+
 static const struct msm_mdss_data sa8775p_data = {
 	.ubwc_enc_version = UBWC_4_0,
 	.ubwc_dec_version = UBWC_4_0,
@@ -737,6 +747,7 @@ static const struct of_device_id mdss_dt_match[] = {
 	{ .compatible = "qcom,mdss" },
 	{ .compatible = "qcom,msm8998-mdss", .data = &msm8998_data },
 	{ .compatible = "qcom,qcm2290-mdss", .data = &qcm2290_data },
+	{ .compatible = "qcom,qcs8300-mdss", .data = &qcs8300_data },
 	{ .compatible = "qcom,sa8775p-mdss", .data = &sa8775p_data },
 	{ .compatible = "qcom,sdm670-mdss", .data = &sdm670_data },
 	{ .compatible = "qcom,sdm845-mdss", .data = &sdm845_data },

-- 
2.34.1

Re: [PATCH v4 3/4] dt-bindings: display/msm: Document MDSS on QCS8300

[Krzysztof Kozlowski]

On Mon, Jan 20, 2025 at 11:49:20AM +0800, Yongxing Mou wrote:
> Document the MDSS hardware found on the Qualcomm QCS8300 platform.
> QCS8300 use the same DPU hardware version as SA8775P, so we reuse it's
> driver. But QCS8300 only have one DP controller, and offset is same with
> sm8650, so dp controller reuse the sm8650's driver.
> 
> Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
> ---
>  .../bindings/display/msm/qcom,qcs8300-mdss.yaml    | 244 +++++++++++++++++++++
>  1 file changed, 244 insertions(+)

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Re: [PATCH v4 2/4] dt-bindings: display/msm: Document the dp-controller for QCS8300

[Krzysztof Kozlowski]

On 20/01/2025 04:49, Yongxing Mou wrote:
> Add compatible string for the DisplayPort controller found on the
> Qualcomm QCS8300 platform.QCS8300 only support one DisplayPort
> controller and have the same base offset with sm8650, so we reuse
> the sm8650 DisplayPort driver.
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
NAK, unreviewed. See all other emails about this mess.


Best regards,
Krzysztof

Re: [PATCH v4 3/4] dt-bindings: display/msm: Document MDSS on QCS8300

[Krzysztof Kozlowski]

On 20/01/2025 04:49, Yongxing Mou wrote:
> Document the MDSS hardware found on the Qualcomm QCS8300 platform.
> QCS8300 use the same DPU hardware version as SA8775P, so we reuse it's
> driver. But QCS8300 only have one DP controller, and offset is same with
> sm8650, so dp controller reuse the sm8650's driver.
> 
> Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
> ---
>  .../bindings/display/msm/qcom,qcs8300-mdss.yaml    | 244 +++++++++++++++++++++
>  1 file changed, 244 insertions(+)

Also wrong compatibles used.

Best regards,
Krzysztof

Re: [PATCH v4 3/4] dt-bindings: display/msm: Document MDSS on QCS8300

[Dmitry Baryshkov]

On Wed, Feb 12, 2025 at 09:38:07AM +0100, Krzysztof Kozlowski wrote:
> On 20/01/2025 04:49, Yongxing Mou wrote:
> > Document the MDSS hardware found on the Qualcomm QCS8300 platform.
> > QCS8300 use the same DPU hardware version as SA8775P, so we reuse it's
> > driver. But QCS8300 only have one DP controller, and offset is same with
> > sm8650, so dp controller reuse the sm8650's driver.
> > 
> > Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
> > ---
> >  .../bindings/display/msm/qcom,qcs8300-mdss.yaml    | 244 +++++++++++++++++++++
> >  1 file changed, 244 insertions(+)
> 
> Also wrong compatibles used.

Which compatibles are wrong here?

-- 
With best wishes
Dmitry

Re: [PATCH v4 3/4] dt-bindings: display/msm: Document MDSS on QCS8300

[Krzysztof Kozlowski]

On 12/02/2025 11:05, Dmitry Baryshkov wrote:
> On Wed, Feb 12, 2025 at 09:38:07AM +0100, Krzysztof Kozlowski wrote:
>> On 20/01/2025 04:49, Yongxing Mou wrote:
>>> Document the MDSS hardware found on the Qualcomm QCS8300 platform.
>>> QCS8300 use the same DPU hardware version as SA8775P, so we reuse it's
>>> driver. But QCS8300 only have one DP controller, and offset is same with
>>> sm8650, so dp controller reuse the sm8650's driver.
>>>
>>> Signed-off-by: Yongxing Mou <quic_yongmou@quicinc.com>
>>> ---
>>>  .../bindings/display/msm/qcom,qcs8300-mdss.yaml    | 244 +++++++++++++++++++++
>>>  1 file changed, 244 insertions(+)
>>
>> Also wrong compatibles used.
> 
> Which compatibles are wrong here?

According to new patchset, the DP compatibles were different.

Best regards,
Krzysztof