[PATCH v2 0/2] arm64: dts: qcom: sm8250: fix display nodes

[PATCH v2 0/2] arm64: dts: qcom: sm8250: fix display nodes

[Jonathan Marek]

Add sm8150/sm8250 compatibles to drm/msm and fix the sm8250
display nodes.

v2: do not remove mmcx-supply from dispcc node

Jonathan Marek (2):
  drm/msm: add compatibles for sm8150/sm8250 display
  arm64: dts: qcom: sm8250: fix display nodes

 .../devicetree/bindings/display/msm/dpu.txt   |  4 +--
 arch/arm64/boot/dts/qcom/sm8250.dtsi          | 33 +++++--------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c       |  2 ++
 drivers/gpu/drm/msm/msm_drv.c                 |  6 ++--
 4 files changed, 16 insertions(+), 29 deletions(-)

-- 
2.26.1

[PATCH v2 1/2] drm/msm: add compatibles for sm8150/sm8250 display

[Jonathan Marek]

The driver already has support for sm8150/sm8250, but the compatibles were
never added.

Also inverse the non-mdp4 condition in add_display_components() to avoid
having to check every new compatible in the condition.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
 Documentation/devicetree/bindings/display/msm/dpu.txt | 4 ++--
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c               | 2 ++
 drivers/gpu/drm/msm/msm_drv.c                         | 6 +++---
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/msm/dpu.txt b/Documentation/devicetree/bindings/display/msm/dpu.txt
index 551ae26f60da..5763f43200a0 100644
--- a/Documentation/devicetree/bindings/display/msm/dpu.txt
+++ b/Documentation/devicetree/bindings/display/msm/dpu.txt
@@ -8,7 +8,7 @@ The DPU display controller is found in SDM845 SoC.
 
 MDSS:
 Required properties:
-- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss"
+- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss", "qcom,sm8150-mdss", "qcom,sm8250-mdss"
 - reg: physical base address and length of contoller's registers.
 - reg-names: register region names. The following region is required:
   * "mdss"
@@ -41,7 +41,7 @@ Optional properties:
 
 MDP:
 Required properties:
-- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu"
+- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu", "qcom,sm8150-dpu", "qcom,sm8250-dpu"
 - reg: physical base address and length of controller's registers.
 - reg-names : register region names. The following region is required:
   * "mdp"
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 5a8e3e1fc48c..fff12a4c8bfc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1219,6 +1219,8 @@ static const struct dev_pm_ops dpu_pm_ops = {
 static const struct of_device_id dpu_dt_match[] = {
 	{ .compatible = "qcom,sdm845-dpu", },
 	{ .compatible = "qcom,sc7180-dpu", },
+	{ .compatible = "qcom,sm8150-dpu", },
+	{ .compatible = "qcom,sm8250-dpu", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, dpu_dt_match);
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 94525ac76d4e..928f13d4bfbc 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1185,9 +1185,7 @@ static int add_display_components(struct device *dev,
 	 * Populate the children devices, find the MDP5/DPU node, and then add
 	 * the interfaces to our components list.
 	 */
-	if (of_device_is_compatible(dev->of_node, "qcom,mdss") ||
-	    of_device_is_compatible(dev->of_node, "qcom,sdm845-mdss") ||
-	    of_device_is_compatible(dev->of_node, "qcom,sc7180-mdss")) {
+	if (!of_device_is_compatible(dev->of_node, "qcom,mdp4")) {
 		ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
 		if (ret) {
 			DRM_DEV_ERROR(dev, "failed to populate children devices\n");
@@ -1320,6 +1318,8 @@ static const struct of_device_id dt_match[] = {
 	{ .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 },
 	{ .compatible = "qcom,sdm845-mdss", .data = (void *)KMS_DPU },
 	{ .compatible = "qcom,sc7180-mdss", .data = (void *)KMS_DPU },
+	{ .compatible = "qcom,sm8150-mdss", .data = (void *)KMS_DPU },
+	{ .compatible = "qcom,sm8250-mdss", .data = (void *)KMS_DPU },
 	{}
 };
 MODULE_DEVICE_TABLE(of, dt_match);
-- 
2.26.1

[PATCH v2 2/2] arm64: dts: qcom: sm8250: fix display nodes

[Jonathan Marek]

Apply these fixes to the newly added sm8250 display ndoes
 - Use sm8250 compatibles instead of sdm845 compatibles
 - Remove "notused" interconnect (which apparently was blindly copied from
   my old patches)
 - Use dispcc node example from dt-bindings, removing clocks which aren't
   documented or used by the driver and fixing the region size.

Fixes: 7c1dffd471b1 ("arm64: dts: qcom: sm8250.dtsi: add display system nodes")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
 arch/arm64/boot/dts/qcom/sm8250.dtsi | 33 ++++++++--------------------
 1 file changed, 9 insertions(+), 24 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index 947e1accae3a..35f45f5e1c76 100644
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -2323,14 +2323,13 @@ usb_2_dwc3: dwc3@a800000 {
 		};
 
 		mdss: mdss@ae00000 {
-			compatible = "qcom,sdm845-mdss";
+			compatible = "qcom,sm8250-mdss";
 			reg = <0 0x0ae00000 0 0x1000>;
 			reg-names = "mdss";
 
-			interconnects = <&gem_noc MASTER_AMPSS_M0 &config_noc SLAVE_DISPLAY_CFG>,
-					<&mmss_noc MASTER_MDP_PORT0 &mc_virt SLAVE_EBI_CH0>,
+			interconnects = <&mmss_noc MASTER_MDP_PORT0 &mc_virt SLAVE_EBI_CH0>,
 					<&mmss_noc MASTER_MDP_PORT1 &mc_virt SLAVE_EBI_CH0>;
-			interconnect-names = "notused", "mdp0-mem", "mdp1-mem";
+			interconnect-names = "mdp0-mem", "mdp1-mem";
 
 			power-domains = <&dispcc MDSS_GDSC>;
 
@@ -2356,7 +2355,7 @@ mdss: mdss@ae00000 {
 			ranges;
 
 			mdss_mdp: mdp@ae01000 {
-				compatible = "qcom,sdm845-dpu";
+				compatible = "qcom,sm8250-dpu";
 				reg = <0 0x0ae01000 0 0x8f000>,
 				      <0 0x0aeb0000 0 0x2008>;
 				reg-names = "mdp", "vbif";
@@ -2580,36 +2579,22 @@ opp-358000000 {
 
 		dispcc: clock-controller@af00000 {
 			compatible = "qcom,sm8250-dispcc";
-			reg = <0 0x0af00000 0 0x20000>;
+			reg = <0 0x0af00000 0 0x10000>;
 			mmcx-supply = <&mmcx_reg>;
 			clocks = <&rpmhcc RPMH_CXO_CLK>,
 				 <&dsi0_phy 0>,
 				 <&dsi0_phy 1>,
 				 <&dsi1_phy 0>,
 				 <&dsi1_phy 1>,
-				 <0>,
-				 <0>,
-				 <0>,
-				 <0>,
-				 <0>,
-				 <0>,
-				 <0>,
-				 <0>,
-				 <&sleep_clk>;
+				 <&dp_phy 0>,
+				 <&dp_phy 1>;
 			clock-names = "bi_tcxo",
 				      "dsi0_phy_pll_out_byteclk",
 				      "dsi0_phy_pll_out_dsiclk",
 				      "dsi1_phy_pll_out_byteclk",
 				      "dsi1_phy_pll_out_dsiclk",
-				      "dp_link_clk_divsel_ten",
-				      "dp_vco_divided_clk_src_mux",
-				      "dptx1_phy_pll_link_clk",
-				      "dptx1_phy_pll_vco_div_clk",
-				      "dptx2_phy_pll_link_clk",
-				      "dptx2_phy_pll_vco_div_clk",
-				      "edp_phy_pll_link_clk",
-				      "edp_phy_pll_vco_div_clk",
-				      "sleep_clk";
+				      "dp_phy_pll_link_clk",
+				      "dp_phy_pll_vco_div_clk";
 			#clock-cells = <1>;
 			#reset-cells = <1>;
 			#power-domain-cells = <1>;
-- 
2.26.1

Re: [PATCH v2 1/2] drm/msm: add compatibles for sm8150/sm8250 display

[Dmitry Baryshkov]

On Mon, 15 Feb 2021 at 19:25, Jonathan Marek <jonathan@marek.ca> wrote:
>
> The driver already has support for sm8150/sm8250, but the compatibles were
> never added.
>
> Also inverse the non-mdp4 condition in add_display_components() to avoid
> having to check every new compatible in the condition.
>
> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
> ---
>  Documentation/devicetree/bindings/display/msm/dpu.txt | 4 ++--
>  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c               | 2 ++
>  drivers/gpu/drm/msm/msm_drv.c                         | 6 +++---
>  3 files changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/msm/dpu.txt b/Documentation/devicetree/bindings/display/msm/dpu.txt
> index 551ae26f60da..5763f43200a0 100644
> --- a/Documentation/devicetree/bindings/display/msm/dpu.txt
> +++ b/Documentation/devicetree/bindings/display/msm/dpu.txt
> @@ -8,7 +8,7 @@ The DPU display controller is found in SDM845 SoC.
>
>  MDSS:
>  Required properties:
> -- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss"
> +- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss", "qcom,sm8150-mdss", "qcom,sm8250-mdss"
>  - reg: physical base address and length of contoller's registers.
>  - reg-names: register region names. The following region is required:
>    * "mdss"
> @@ -41,7 +41,7 @@ Optional properties:
>
>  MDP:
>  Required properties:
> -- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu"
> +- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu", "qcom,sm8150-dpu", "qcom,sm8250-dpu"
>  - reg: physical base address and length of controller's registers.
>  - reg-names : register region names. The following region is required:
>    * "mdp"

These two chunks should probably go to the separate patch 'dt-bindings:...'.

Also, could you please pinpoint the reason for adding more
compatibility strings, while they map to the same internal data?
I think we might want instead to use some generic name for the dpu
block, like "qcom,dpu" or "qcom,mdp-dpu" instead of specifying the
platform name.


> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index 5a8e3e1fc48c..fff12a4c8bfc 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -1219,6 +1219,8 @@ static const struct dev_pm_ops dpu_pm_ops = {
>  static const struct of_device_id dpu_dt_match[] = {
>         { .compatible = "qcom,sdm845-dpu", },
>         { .compatible = "qcom,sc7180-dpu", },
> +       { .compatible = "qcom,sm8150-dpu", },
> +       { .compatible = "qcom,sm8250-dpu", },
>         {}
>  };
>  MODULE_DEVICE_TABLE(of, dpu_dt_match);
> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> index 94525ac76d4e..928f13d4bfbc 100644
> --- a/drivers/gpu/drm/msm/msm_drv.c
> +++ b/drivers/gpu/drm/msm/msm_drv.c
> @@ -1185,9 +1185,7 @@ static int add_display_components(struct device *dev,
>          * Populate the children devices, find the MDP5/DPU node, and then add
>          * the interfaces to our components list.
>          */
> -       if (of_device_is_compatible(dev->of_node, "qcom,mdss") ||
> -           of_device_is_compatible(dev->of_node, "qcom,sdm845-mdss") ||
> -           of_device_is_compatible(dev->of_node, "qcom,sc7180-mdss")) {
> +       if (!of_device_is_compatible(dev->of_node, "qcom,mdp4")) {
>                 ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
>                 if (ret) {
>                         DRM_DEV_ERROR(dev, "failed to populate children devices\n");
> @@ -1320,6 +1318,8 @@ static const struct of_device_id dt_match[] = {
>         { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 },
>         { .compatible = "qcom,sdm845-mdss", .data = (void *)KMS_DPU },
>         { .compatible = "qcom,sc7180-mdss", .data = (void *)KMS_DPU },
> +       { .compatible = "qcom,sm8150-mdss", .data = (void *)KMS_DPU },
> +       { .compatible = "qcom,sm8250-mdss", .data = (void *)KMS_DPU },
>         {}
>  };
>  MODULE_DEVICE_TABLE(of, dt_match);
> --
> 2.26.1
>


-- 
With best wishes
Dmitry

Re: [PATCH v2 1/2] drm/msm: add compatibles for sm8150/sm8250 display

[Jonathan Marek]

On 2/16/21 11:54 AM, Dmitry Baryshkov wrote:
> On Mon, 15 Feb 2021 at 19:25, Jonathan Marek <jonathan@marek.ca> wrote:
>>
>> The driver already has support for sm8150/sm8250, but the compatibles were
>> never added.
>>
>> Also inverse the non-mdp4 condition in add_display_components() to avoid
>> having to check every new compatible in the condition.
>>
>> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
>> ---
>>   Documentation/devicetree/bindings/display/msm/dpu.txt | 4 ++--
>>   drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c               | 2 ++
>>   drivers/gpu/drm/msm/msm_drv.c                         | 6 +++---
>>   3 files changed, 7 insertions(+), 5 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/display/msm/dpu.txt b/Documentation/devicetree/bindings/display/msm/dpu.txt
>> index 551ae26f60da..5763f43200a0 100644
>> --- a/Documentation/devicetree/bindings/display/msm/dpu.txt
>> +++ b/Documentation/devicetree/bindings/display/msm/dpu.txt
>> @@ -8,7 +8,7 @@ The DPU display controller is found in SDM845 SoC.
>>
>>   MDSS:
>>   Required properties:
>> -- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss"
>> +- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss", "qcom,sm8150-mdss", "qcom,sm8250-mdss"
>>   - reg: physical base address and length of contoller's registers.
>>   - reg-names: register region names. The following region is required:
>>     * "mdss"
>> @@ -41,7 +41,7 @@ Optional properties:
>>
>>   MDP:
>>   Required properties:
>> -- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu"
>> +- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu", "qcom,sm8150-dpu", "qcom,sm8250-dpu"
>>   - reg: physical base address and length of controller's registers.
>>   - reg-names : register region names. The following region is required:
>>     * "mdp"
> 
> These two chunks should probably go to the separate patch 'dt-bindings:...'.
> 

In this case I think its better to have this change in the same patch, 
but maybe one of the Robs will disagree.

> Also, could you please pinpoint the reason for adding more
> compatibility strings, while they map to the same internal data?
> I think we might want instead to use some generic name for the dpu
> block, like "qcom,dpu" or "qcom,mdp-dpu" instead of specifying the
> platform name.
> 

sdm845 and sc7180 aren't using generic compatibles, this is just being 
consistent with that.

> 
>> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
>> index 5a8e3e1fc48c..fff12a4c8bfc 100644
>> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
>> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
>> @@ -1219,6 +1219,8 @@ static const struct dev_pm_ops dpu_pm_ops = {
>>   static const struct of_device_id dpu_dt_match[] = {
>>          { .compatible = "qcom,sdm845-dpu", },
>>          { .compatible = "qcom,sc7180-dpu", },
>> +       { .compatible = "qcom,sm8150-dpu", },
>> +       { .compatible = "qcom,sm8250-dpu", },
>>          {}
>>   };
>>   MODULE_DEVICE_TABLE(of, dpu_dt_match);
>> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
>> index 94525ac76d4e..928f13d4bfbc 100644
>> --- a/drivers/gpu/drm/msm/msm_drv.c
>> +++ b/drivers/gpu/drm/msm/msm_drv.c
>> @@ -1185,9 +1185,7 @@ static int add_display_components(struct device *dev,
>>           * Populate the children devices, find the MDP5/DPU node, and then add
>>           * the interfaces to our components list.
>>           */
>> -       if (of_device_is_compatible(dev->of_node, "qcom,mdss") ||
>> -           of_device_is_compatible(dev->of_node, "qcom,sdm845-mdss") ||
>> -           of_device_is_compatible(dev->of_node, "qcom,sc7180-mdss")) {
>> +       if (!of_device_is_compatible(dev->of_node, "qcom,mdp4")) {
>>                  ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
>>                  if (ret) {
>>                          DRM_DEV_ERROR(dev, "failed to populate children devices\n");
>> @@ -1320,6 +1318,8 @@ static const struct of_device_id dt_match[] = {
>>          { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 },
>>          { .compatible = "qcom,sdm845-mdss", .data = (void *)KMS_DPU },
>>          { .compatible = "qcom,sc7180-mdss", .data = (void *)KMS_DPU },
>> +       { .compatible = "qcom,sm8150-mdss", .data = (void *)KMS_DPU },
>> +       { .compatible = "qcom,sm8250-mdss", .data = (void *)KMS_DPU },
>>          {}
>>   };
>>   MODULE_DEVICE_TABLE(of, dt_match);
>> --
>> 2.26.1
>>
> 
> 

Re: [PATCH v2 1/2] drm/msm: add compatibles for sm8150/sm8250 display

[Dmitry Baryshkov]

On Tue, 16 Feb 2021 at 21:06, Jonathan Marek <jonathan@marek.ca> wrote:
>
> On 2/16/21 11:54 AM, Dmitry Baryshkov wrote:
> > On Mon, 15 Feb 2021 at 19:25, Jonathan Marek <jonathan@marek.ca> wrote:
> >>
> >> The driver already has support for sm8150/sm8250, but the compatibles were
> >> never added.
> >>
> >> Also inverse the non-mdp4 condition in add_display_components() to avoid
> >> having to check every new compatible in the condition.
> >>
> >> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
> >> ---
> >>   Documentation/devicetree/bindings/display/msm/dpu.txt | 4 ++--
> >>   drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c               | 2 ++
> >>   drivers/gpu/drm/msm/msm_drv.c                         | 6 +++---
> >>   3 files changed, 7 insertions(+), 5 deletions(-)
> >>
> >> diff --git a/Documentation/devicetree/bindings/display/msm/dpu.txt b/Documentation/devicetree/bindings/display/msm/dpu.txt
> >> index 551ae26f60da..5763f43200a0 100644
> >> --- a/Documentation/devicetree/bindings/display/msm/dpu.txt
> >> +++ b/Documentation/devicetree/bindings/display/msm/dpu.txt
> >> @@ -8,7 +8,7 @@ The DPU display controller is found in SDM845 SoC.
> >>
> >>   MDSS:
> >>   Required properties:
> >> -- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss"
> >> +- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss", "qcom,sm8150-mdss", "qcom,sm8250-mdss"
> >>   - reg: physical base address and length of contoller's registers.
> >>   - reg-names: register region names. The following region is required:
> >>     * "mdss"
> >> @@ -41,7 +41,7 @@ Optional properties:
> >>
> >>   MDP:
> >>   Required properties:
> >> -- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu"
> >> +- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu", "qcom,sm8150-dpu", "qcom,sm8250-dpu"
> >>   - reg: physical base address and length of controller's registers.
> >>   - reg-names : register region names. The following region is required:
> >>     * "mdp"
> >
> > These two chunks should probably go to the separate patch 'dt-bindings:...'.
> >
>
> In this case I think its better to have this change in the same patch,
> but maybe one of the Robs will disagree.
>
> > Also, could you please pinpoint the reason for adding more
> > compatibility strings, while they map to the same internal data?
> > I think we might want instead to use some generic name for the dpu
> > block, like "qcom,dpu" or "qcom,mdp-dpu" instead of specifying the
> > platform name.
> >
>
> sdm845 and sc7180 aren't using generic compatibles, this is just being
> consistent with that.

Well, I suppose the common case is to use the 'first compatible' entry
if the entities are compatible. The generic compatibles is a proposal,
not an affirmation. Please excuse me if it sounded in a different way.

>
> >
> >> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> >> index 5a8e3e1fc48c..fff12a4c8bfc 100644
> >> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> >> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> >> @@ -1219,6 +1219,8 @@ static const struct dev_pm_ops dpu_pm_ops = {
> >>   static const struct of_device_id dpu_dt_match[] = {
> >>          { .compatible = "qcom,sdm845-dpu", },
> >>          { .compatible = "qcom,sc7180-dpu", },
> >> +       { .compatible = "qcom,sm8150-dpu", },
> >> +       { .compatible = "qcom,sm8250-dpu", },
> >>          {}
> >>   };
> >>   MODULE_DEVICE_TABLE(of, dpu_dt_match);
> >> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> >> index 94525ac76d4e..928f13d4bfbc 100644
> >> --- a/drivers/gpu/drm/msm/msm_drv.c
> >> +++ b/drivers/gpu/drm/msm/msm_drv.c
> >> @@ -1185,9 +1185,7 @@ static int add_display_components(struct device *dev,
> >>           * Populate the children devices, find the MDP5/DPU node, and then add
> >>           * the interfaces to our components list.
> >>           */
> >> -       if (of_device_is_compatible(dev->of_node, "qcom,mdss") ||
> >> -           of_device_is_compatible(dev->of_node, "qcom,sdm845-mdss") ||
> >> -           of_device_is_compatible(dev->of_node, "qcom,sc7180-mdss")) {
> >> +       if (!of_device_is_compatible(dev->of_node, "qcom,mdp4")) {
> >>                  ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
> >>                  if (ret) {
> >>                          DRM_DEV_ERROR(dev, "failed to populate children devices\n");
> >> @@ -1320,6 +1318,8 @@ static const struct of_device_id dt_match[] = {
> >>          { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 },
> >>          { .compatible = "qcom,sdm845-mdss", .data = (void *)KMS_DPU },
> >>          { .compatible = "qcom,sc7180-mdss", .data = (void *)KMS_DPU },
> >> +       { .compatible = "qcom,sm8150-mdss", .data = (void *)KMS_DPU },
> >> +       { .compatible = "qcom,sm8250-mdss", .data = (void *)KMS_DPU },
> >>          {}
> >>   };
> >>   MODULE_DEVICE_TABLE(of, dt_match);
> >> --
> >> 2.26.1
> >>
> >
> >



-- 
With best wishes
Dmitry

Re: [PATCH v2 1/2] drm/msm: add compatibles for sm8150/sm8250 display

[Rob Clark]

On Tue, Feb 16, 2021 at 10:06 AM Jonathan Marek <jonathan@marek.ca> wrote:
>
> On 2/16/21 11:54 AM, Dmitry Baryshkov wrote:
> > On Mon, 15 Feb 2021 at 19:25, Jonathan Marek <jonathan@marek.ca> wrote:
> >>
> >> The driver already has support for sm8150/sm8250, but the compatibles were
> >> never added.
> >>
> >> Also inverse the non-mdp4 condition in add_display_components() to avoid
> >> having to check every new compatible in the condition.
> >>
> >> Signed-off-by: Jonathan Marek <jonathan@marek.ca>
> >> ---
> >>   Documentation/devicetree/bindings/display/msm/dpu.txt | 4 ++--
> >>   drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c               | 2 ++
> >>   drivers/gpu/drm/msm/msm_drv.c                         | 6 +++---
> >>   3 files changed, 7 insertions(+), 5 deletions(-)
> >>
> >> diff --git a/Documentation/devicetree/bindings/display/msm/dpu.txt b/Documentation/devicetree/bindings/display/msm/dpu.txt
> >> index 551ae26f60da..5763f43200a0 100644
> >> --- a/Documentation/devicetree/bindings/display/msm/dpu.txt
> >> +++ b/Documentation/devicetree/bindings/display/msm/dpu.txt
> >> @@ -8,7 +8,7 @@ The DPU display controller is found in SDM845 SoC.
> >>
> >>   MDSS:
> >>   Required properties:
> >> -- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss"
> >> +- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss", "qcom,sm8150-mdss", "qcom,sm8250-mdss"
> >>   - reg: physical base address and length of contoller's registers.
> >>   - reg-names: register region names. The following region is required:
> >>     * "mdss"
> >> @@ -41,7 +41,7 @@ Optional properties:
> >>
> >>   MDP:
> >>   Required properties:
> >> -- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu"
> >> +- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu", "qcom,sm8150-dpu", "qcom,sm8250-dpu"
> >>   - reg: physical base address and length of controller's registers.
> >>   - reg-names : register region names. The following region is required:
> >>     * "mdp"
> >
> > These two chunks should probably go to the separate patch 'dt-bindings:...'.
> >
>
> In this case I think its better to have this change in the same patch,
> but maybe one of the Robs will disagree.

I *think* typically the reason to split dt bindings into their own
patch is that devicetree@ list isn't interested in reviewing driver
changes, just binding changes..

In this case since it is just adding a compatible I think it is ok..
(or at least ok by me, but maybe other-Rob disagrees ;-))

> > Also, could you please pinpoint the reason for adding more
> > compatibility strings, while they map to the same internal data?
> > I think we might want instead to use some generic name for the dpu
> > block, like "qcom,dpu" or "qcom,mdp-dpu" instead of specifying the
> > platform name.
> >
>
> sdm845 and sc7180 aren't using generic compatibles, this is just being
> consistent with that.

It is good to have a device specific compatible up front, even if we
fallback to the more generic one for matching.. just in case we find a
reason for needing it later

BR,
-R

> >
> >> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> >> index 5a8e3e1fc48c..fff12a4c8bfc 100644
> >> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> >> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> >> @@ -1219,6 +1219,8 @@ static const struct dev_pm_ops dpu_pm_ops = {
> >>   static const struct of_device_id dpu_dt_match[] = {
> >>          { .compatible = "qcom,sdm845-dpu", },
> >>          { .compatible = "qcom,sc7180-dpu", },
> >> +       { .compatible = "qcom,sm8150-dpu", },
> >> +       { .compatible = "qcom,sm8250-dpu", },
> >>          {}
> >>   };
> >>   MODULE_DEVICE_TABLE(of, dpu_dt_match);
> >> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> >> index 94525ac76d4e..928f13d4bfbc 100644
> >> --- a/drivers/gpu/drm/msm/msm_drv.c
> >> +++ b/drivers/gpu/drm/msm/msm_drv.c
> >> @@ -1185,9 +1185,7 @@ static int add_display_components(struct device *dev,
> >>           * Populate the children devices, find the MDP5/DPU node, and then add
> >>           * the interfaces to our components list.
> >>           */
> >> -       if (of_device_is_compatible(dev->of_node, "qcom,mdss") ||
> >> -           of_device_is_compatible(dev->of_node, "qcom,sdm845-mdss") ||
> >> -           of_device_is_compatible(dev->of_node, "qcom,sc7180-mdss")) {
> >> +       if (!of_device_is_compatible(dev->of_node, "qcom,mdp4")) {
> >>                  ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
> >>                  if (ret) {
> >>                          DRM_DEV_ERROR(dev, "failed to populate children devices\n");
> >> @@ -1320,6 +1318,8 @@ static const struct of_device_id dt_match[] = {
> >>          { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 },
> >>          { .compatible = "qcom,sdm845-mdss", .data = (void *)KMS_DPU },
> >>          { .compatible = "qcom,sc7180-mdss", .data = (void *)KMS_DPU },
> >> +       { .compatible = "qcom,sm8150-mdss", .data = (void *)KMS_DPU },
> >> +       { .compatible = "qcom,sm8250-mdss", .data = (void *)KMS_DPU },
> >>          {}
> >>   };
> >>   MODULE_DEVICE_TABLE(of, dt_match);
> >> --
> >> 2.26.1
> >>
> >
> >