[PATCH 0/3] dt-bindings: soc: qcom: aoss: Support sc8180x and convert to YAML

Introduce generic and sc8180x specific compatible for the aoss QMP binding and
add the generic to the implementation. Then convert the binding to YAML.

Bjorn Andersson (3):
  dt-bindings: soc: qcom: aoss: Add SC8180X compatible
  dt-bindings: soc: qcom: aoss: Convert to YAML
  soc: qcom: aoss: Add generic compatible

 .../bindings/soc/qcom/qcom,aoss-qmp.txt       |  87 -------------
 .../bindings/soc/qcom/qcom,aoss-qmp.yaml      | 115 ++++++++++++++++++
 drivers/soc/qcom/qcom_aoss.c                  |   1 +
 3 files changed, 116 insertions(+), 87 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
 create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

-- 
2.29.2

Add compatible for the Qualcomm SC8180x platform to the AOSS QMP
binding.

Signed-off-by: Bjorn Andersson <redacted>
---
 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
index 783dc81b0f26..3747032311a4 100644
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt

@@ -18,10 +18,13 @@ power-domains.
 	Definition: must be one of:
 		    "qcom,sc7180-aoss-qmp"
 		    "qcom,sc7280-aoss-qmp"
+		    "qcom,sc8180x-aoss-qmp"
 		    "qcom,sdm845-aoss-qmp"
 		    "qcom,sm8150-aoss-qmp"
 		    "qcom,sm8250-aoss-qmp"
 		    "qcom,sm8350-aoss-qmp"
+		    and:
+		    "qcom,aoss-qmp"
 
 - reg:
 	Usage: required

@@ -70,7 +73,7 @@ The following example represents the AOSS side-channel message RAM and the
 mechanism exposing the power-domains, as found in SDM845.
 
   aoss_qmp: qmp@c300000 {
-	  compatible = "qcom,sdm845-aoss-qmp";
+	  compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
 	  reg = <0x0c300000 0x100000>;
 	  interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
 	  mboxes = <&apss_shared 0>;

-- 
2.29.2

On Fri, Jun 25, 2021 at 04:40:16PM -0700, Bjorn Andersson wrote:

This was missing from all the existing ones or is an addition?

On Thu 01 Jul 14:03 CDT 2021, Rob Herring wrote:

On Fri, Jun 25, 2021 at 04:40:16PM -0700, Bjorn Andersson wrote:

quoted

Add compatible for the Qualcomm SC8180x platform to the AOSS QMP
binding.

Signed-off-by: Bjorn Andersson <redacted>
---
 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
index 783dc81b0f26..3747032311a4 100644
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt

@@ -18,10 +18,13 @@ power-domains.
 	Definition: must be one of:
 		    "qcom,sc7180-aoss-qmp"
 		    "qcom,sc7280-aoss-qmp"
+		    "qcom,sc8180x-aoss-qmp"
 		    "qcom,sdm845-aoss-qmp"
 		    "qcom,sm8150-aoss-qmp"
 		    "qcom,sm8250-aoss-qmp"
 		    "qcom,sm8350-aoss-qmp"
+		    and:
+		    "qcom,aoss-qmp"

This was missing from all the existing ones or is an addition?

We've only had platform-specific compatibles for this binding (and
implementation) so far, this patch adds sc8180x and a common compatible.

So the commit message should have been rewritten to cover this as I
extended my original patch. Sorry for missing that.

Regards,
Bjorn

quoted

 
 - reg:
 	Usage: required

@@ -70,7 +73,7 @@ The following example represents the AOSS side-channel message RAM and the
 mechanism exposing the power-domains, as found in SDM845.
 
   aoss_qmp: qmp@c300000 {
-	  compatible = "qcom,sdm845-aoss-qmp";
+	  compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
 	  reg = <0x0c300000 0x100000>;
 	  interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
 	  mboxes = <&apss_shared 0>;

-- 
2.29.2

Convert to YAML in order to allow validation.

Signed-off-by: Bjorn Andersson <redacted>
---

I'm aware that this conflicts with Sibi's removal of '#power-domain-cells', but
that's a trivial change regardless of which of the two patches gets in first.

 .../bindings/soc/qcom/qcom,aoss-qmp.txt       |  90 --------------
 .../bindings/soc/qcom/qcom,aoss-qmp.yaml      | 115 ++++++++++++++++++
 2 files changed, 115 insertions(+), 90 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
 create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
deleted file mode 100644
index 3747032311a4..000000000000
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
+++ /dev/null

@@ -1,90 +0,0 @@
-Qualcomm Always-On Subsystem side channel binding
-
-This binding describes the hardware component responsible for side channel
-requests to the always-on subsystem (AOSS), used for certain power management
-requests that is not handled by the standard RPMh interface. Each client in the
-SoC has it's own block of message RAM and IRQ for communication with the AOSS.
-The protocol used to communicate in the message RAM is known as Qualcomm
-Messaging Protocol (QMP)
-
-The AOSS side channel exposes control over a set of resources, used to control
-a set of debug related clocks and to affect the low power state of resources
-related to the secondary subsystems. These resources are exposed as a set of
-power-domains.
-
-- compatible:
-	Usage: required
-	Value type: <string>
-	Definition: must be one of:
-		    "qcom,sc7180-aoss-qmp"
-		    "qcom,sc7280-aoss-qmp"
-		    "qcom,sc8180x-aoss-qmp"
-		    "qcom,sdm845-aoss-qmp"
-		    "qcom,sm8150-aoss-qmp"
-		    "qcom,sm8250-aoss-qmp"
-		    "qcom,sm8350-aoss-qmp"
-		    and:
-		    "qcom,aoss-qmp"
-
-- reg:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: the base address and size of the message RAM for this
-		    client's communication with the AOSS
-
-- interrupts:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: should specify the AOSS message IRQ for this client
-
-- mboxes:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: reference to the mailbox representing the outgoing doorbell
-		    in APCS for this client, as described in mailbox/mailbox.txt
-
-- #clock-cells:
-	Usage: optional
-	Value type: <u32>
-	Definition: must be 0
-		    The single clock represents the QDSS clock.
-
-- #power-domain-cells:
-	Usage: optional
-	Value type: <u32>
-	Definition: must be 1
-		    The provided power-domains are:
-		    CDSP state (0), LPASS state (1), modem state (2), SLPI
-		    state (3), SPSS state (4) and Venus state (5).
-
-= SUBNODES
-The AOSS side channel also provides the controls for three cooling devices,
-these are expressed as subnodes of the QMP node. The name of the node is used
-to identify the resource and must therefor be "cx", "mx" or "ebi".
-
-- #cooling-cells:
-	Usage: optional
-	Value type: <u32>
-	Definition: must be 2
-
-= EXAMPLE
-
-The following example represents the AOSS side-channel message RAM and the
-mechanism exposing the power-domains, as found in SDM845.
-
-  aoss_qmp: qmp@c300000 {
-	  compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
-	  reg = <0x0c300000 0x100000>;
-	  interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
-	  mboxes = <&apss_shared 0>;
-
-	  #power-domain-cells = <1>;
-
-	  cx_cdev: cx {
-		#cooling-cells = <2>;
-	  };
-
-	  mx_cdev: mx {
-		#cooling-cells = <2>;
-	  };
-  };

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
new file mode 100644
index 000000000000..1b9de8e49356
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

@@ -0,0 +1,115 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/qcom/qcom,aoss-qmp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Always-On Subsystem side channel binding
+
+maintainers:
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description:
+  This binding describes the hardware component responsible for side channel
+  requests to the always-on subsystem (AOSS), used for certain power management
+  requests that is not handled by the standard RPMh interface. Each client in the
+  SoC has it's own block of message RAM and IRQ for communication with the AOSS.
+  The protocol used to communicate in the message RAM is known as Qualcomm
+  Messaging Protocol (QMP)
+
+  The AOSS side channel exposes control over a set of resources, used to control
+  a set of debug related clocks and to affect the low power state of resources
+  related to the secondary subsystems. These resources are exposed as a set of
+  power-domains.
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - "qcom,sc7180-aoss-qmp"
+        - "qcom,sc7280-aoss-qmp"
+        - "qcom,sc8180x-aoss-qmp"
+        - "qcom,sdm845-aoss-qmp"
+        - "qcom,sm8150-aoss-qmp"
+        - "qcom,sm8250-aoss-qmp"
+        - "qcom,sm8350-aoss-qmp"
+      - const: "qcom,aoss-qmp"
+
+  reg:
+    maxItems: 1
+    description:
+      The base address and size of the message RAM for this client's
+      communication with the AOSS
+
+  interrupts:
+    maxItems: 1
+    description:
+      Should specify the AOSS message IRQ for this client
+
+  mboxes:
+    maxItems: 1
+    description:
+      Reference to the mailbox representing the outgoing doorbell in APCS for
+      this client, as described in mailbox/mailbox.txt
+
+  "#clock-cells":
+    const: 0
+    description:
+      The single clock represents the QDSS clock.
+
+  "#power-domain-cells":
+    const: 1
+    description: |
+        The provided power-domains are:
+        CDSP state (0), LPASS state (1), modem state (2), SLPI
+        state (3), SPSS state (4) and Venus state (5).
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - mboxes
+  - "#clock-cells"
+  - "#power-domain-cells"
+
+additionalProperties: false
+
+patternProperties:
+  "^(cx|mx|ebi)$":
+    type: object
+    description:
+      The AOSS side channel also provides the controls for three cooling devices,
+      these are expressed as subnodes of the QMP node. The name of the node is
+      used to identify the resource and must therefor be "cx", "mx" or "ebi".
+
+    properties:
+      "#cooling-cells":
+        const: 2
+
+    required:
+      - "#cooling-cells"
+
+    additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    aoss_qmp: qmp@c300000 {
+      compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
+      reg = <0x0c300000 0x100000>;
+      interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
+      mboxes = <&apss_shared 0>;
+
+      #clock-cells = <0>;
+      #power-domain-cells = <1>;
+
+      cx_cdev: cx {
+        #cooling-cells = <2>;
+      };
+
+      mx_cdev: mx {
+        #cooling-cells = <2>;
+      };
+    };
+...

-- 
2.29.2

On Fri, Jun 25, 2021 at 04:40:17PM -0700, Bjorn Andersson wrote:

Convert to YAML in order to allow validation.

Signed-off-by: Bjorn Andersson <redacted>
---

I'm aware that this conflicts with Sibi's removal of '#power-domain-cells', but
that's a trivial change regardless of which of the two patches gets in first.

 .../bindings/soc/qcom/qcom,aoss-qmp.txt       |  90 --------------
 .../bindings/soc/qcom/qcom,aoss-qmp.yaml      | 115 ++++++++++++++++++
 2 files changed, 115 insertions(+), 90 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
 create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

[...]

+required:
+  - compatible
+  - reg
+  - interrupts
+  - mboxes
+  - "#clock-cells"

The old binding lists this property as optional but you're marking it
as required. And by looking at the driver it seems to be optional only.

+  - "#power-domain-cells"

This one was marked optional as well but the driver registers the pd's
unconditionally, so I guess it is fine.

Thanks,
Mani

+
+additionalProperties: false
+
+patternProperties:
+  "^(cx|mx|ebi)$":
+    type: object
+    description:
+      The AOSS side channel also provides the controls for three cooling devices,
+      these are expressed as subnodes of the QMP node. The name of the node is
+      used to identify the resource and must therefor be "cx", "mx" or "ebi".
+
+    properties:
+      "#cooling-cells":
+        const: 2
+
+    required:
+      - "#cooling-cells"
+
+    additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    aoss_qmp: qmp@c300000 {
+      compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
+      reg = <0x0c300000 0x100000>;
+      interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
+      mboxes = <&apss_shared 0>;
+
+      #clock-cells = <0>;
+      #power-domain-cells = <1>;
+
+      cx_cdev: cx {
+        #cooling-cells = <2>;
+      };
+
+      mx_cdev: mx {
+        #cooling-cells = <2>;
+      };
+    };
+...
-- 
2.29.2

On Mon 28 Jun 09:49 CDT 2021, Manivannan Sadhasivam wrote:

On Fri, Jun 25, 2021 at 04:40:17PM -0700, Bjorn Andersson wrote:

quoted

Convert to YAML in order to allow validation.

Signed-off-by: Bjorn Andersson <redacted>
---

I'm aware that this conflicts with Sibi's removal of '#power-domain-cells', but
that's a trivial change regardless of which of the two patches gets in first.

 .../bindings/soc/qcom/qcom,aoss-qmp.txt       |  90 --------------
 .../bindings/soc/qcom/qcom,aoss-qmp.yaml      | 115 ++++++++++++++++++
 2 files changed, 115 insertions(+), 90 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
 create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

[...]

quoted

+required:
+  - compatible
+  - reg
+  - interrupts
+  - mboxes
+  - "#clock-cells"

The old binding lists this property as optional but you're marking it
as required. And by looking at the driver it seems to be optional only.

You're right, missed that detail. Will respin accordingly.

quoted

+  - "#power-domain-cells"

This one was marked optional as well but the driver registers the pd's
unconditionally, so I guess it is fine.

I think this should be a required property, but the conversion should
convert the binding, so I'll update accordingly.

Also, Sibi has a series that drops the power-domains, due to some
unforeseen complications related to suspend, so there's no need to
follow up with a change to the binding in this regard.

Thanks,
Bjorn

Thanks,
Mani

quoted

+
+additionalProperties: false
+
+patternProperties:
+  "^(cx|mx|ebi)$":
+    type: object
+    description:
+      The AOSS side channel also provides the controls for three cooling devices,
+      these are expressed as subnodes of the QMP node. The name of the node is
+      used to identify the resource and must therefor be "cx", "mx" or "ebi".
+
+    properties:
+      "#cooling-cells":
+        const: 2
+
+    required:
+      - "#cooling-cells"
+
+    additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    aoss_qmp: qmp@c300000 {
+      compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
+      reg = <0x0c300000 0x100000>;
+      interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
+      mboxes = <&apss_shared 0>;
+
+      #clock-cells = <0>;
+      #power-domain-cells = <1>;
+
+      cx_cdev: cx {
+        #cooling-cells = <2>;
+      };
+
+      mx_cdev: mx {
+        #cooling-cells = <2>;
+      };
+    };
+...
-- 
2.29.2

On Fri, 25 Jun 2021 16:40:17 -0700, Bjorn Andersson wrote:

Convert to YAML in order to allow validation.

Signed-off-by: Bjorn Andersson <redacted>
---

I'm aware that this conflicts with Sibi's removal of '#power-domain-cells', but
that's a trivial change regardless of which of the two patches gets in first.

 .../bindings/soc/qcom/qcom,aoss-qmp.txt       |  90 --------------
 .../bindings/soc/qcom/qcom,aoss-qmp.yaml      | 115 ++++++++++++++++++
 2 files changed, 115 insertions(+), 90 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
 create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:
./Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml:29:9: [warning] wrong indentation: expected 10 but found 8 (indentation)

dtschema/dtc warnings/errors:
\ndoc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1497468

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.

On Fri, Jun 25, 2021 at 04:40:17PM -0700, Bjorn Andersson wrote:

Don't need quotes. With that and the indentation fixed:

Reviewed-by: Rob Herring <robh@kernel.org>

On Thu 01 Jul 12:03 PDT 2021, Rob Herring wrote:

On Fri, Jun 25, 2021 at 04:40:17PM -0700, Bjorn Andersson wrote:

quoted

Convert to YAML in order to allow validation.

Signed-off-by: Bjorn Andersson <redacted>
---

I'm aware that this conflicts with Sibi's removal of '#power-domain-cells', but
that's a trivial change regardless of which of the two patches gets in first.

 .../bindings/soc/qcom/qcom,aoss-qmp.txt       |  90 --------------
 .../bindings/soc/qcom/qcom,aoss-qmp.yaml      | 115 ++++++++++++++++++
 2 files changed, 115 insertions(+), 90 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
 create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
deleted file mode 100644
index 3747032311a4..000000000000
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
+++ /dev/null

@@ -1,90 +0,0 @@
-Qualcomm Always-On Subsystem side channel binding
-
-This binding describes the hardware component responsible for side channel
-requests to the always-on subsystem (AOSS), used for certain power management
-requests that is not handled by the standard RPMh interface. Each client in the
-SoC has it's own block of message RAM and IRQ for communication with the AOSS.
-The protocol used to communicate in the message RAM is known as Qualcomm
-Messaging Protocol (QMP)
-
-The AOSS side channel exposes control over a set of resources, used to control
-a set of debug related clocks and to affect the low power state of resources
-related to the secondary subsystems. These resources are exposed as a set of
-power-domains.
-
-- compatible:
-	Usage: required
-	Value type: <string>
-	Definition: must be one of:
-		    "qcom,sc7180-aoss-qmp"
-		    "qcom,sc7280-aoss-qmp"
-		    "qcom,sc8180x-aoss-qmp"
-		    "qcom,sdm845-aoss-qmp"
-		    "qcom,sm8150-aoss-qmp"
-		    "qcom,sm8250-aoss-qmp"
-		    "qcom,sm8350-aoss-qmp"
-		    and:
-		    "qcom,aoss-qmp"
-
-- reg:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: the base address and size of the message RAM for this
-		    client's communication with the AOSS
-
-- interrupts:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: should specify the AOSS message IRQ for this client
-
-- mboxes:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: reference to the mailbox representing the outgoing doorbell
-		    in APCS for this client, as described in mailbox/mailbox.txt
-
-- #clock-cells:
-	Usage: optional
-	Value type: <u32>
-	Definition: must be 0
-		    The single clock represents the QDSS clock.
-
-- #power-domain-cells:
-	Usage: optional
-	Value type: <u32>
-	Definition: must be 1
-		    The provided power-domains are:
-		    CDSP state (0), LPASS state (1), modem state (2), SLPI
-		    state (3), SPSS state (4) and Venus state (5).
-
-= SUBNODES
-The AOSS side channel also provides the controls for three cooling devices,
-these are expressed as subnodes of the QMP node. The name of the node is used
-to identify the resource and must therefor be "cx", "mx" or "ebi".
-
-- #cooling-cells:
-	Usage: optional
-	Value type: <u32>
-	Definition: must be 2
-
-= EXAMPLE
-
-The following example represents the AOSS side-channel message RAM and the
-mechanism exposing the power-domains, as found in SDM845.
-
-  aoss_qmp: qmp@c300000 {
-	  compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
-	  reg = <0x0c300000 0x100000>;
-	  interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
-	  mboxes = <&apss_shared 0>;
-
-	  #power-domain-cells = <1>;
-
-	  cx_cdev: cx {
-		#cooling-cells = <2>;
-	  };
-
-	  mx_cdev: mx {
-		#cooling-cells = <2>;
-	  };
-  };

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
new file mode 100644
index 000000000000..1b9de8e49356
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

@@ -0,0 +1,115 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/qcom/qcom,aoss-qmp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Always-On Subsystem side channel binding
+
+maintainers:
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description:
+  This binding describes the hardware component responsible for side channel
+  requests to the always-on subsystem (AOSS), used for certain power management
+  requests that is not handled by the standard RPMh interface. Each client in the
+  SoC has it's own block of message RAM and IRQ for communication with the AOSS.
+  The protocol used to communicate in the message RAM is known as Qualcomm
+  Messaging Protocol (QMP)
+
+  The AOSS side channel exposes control over a set of resources, used to control
+  a set of debug related clocks and to affect the low power state of resources
+  related to the secondary subsystems. These resources are exposed as a set of
+  power-domains.
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - "qcom,sc7180-aoss-qmp"
+        - "qcom,sc7280-aoss-qmp"
+        - "qcom,sc8180x-aoss-qmp"
+        - "qcom,sdm845-aoss-qmp"
+        - "qcom,sm8150-aoss-qmp"
+        - "qcom,sm8250-aoss-qmp"
+        - "qcom,sm8350-aoss-qmp"
+      - const: "qcom,aoss-qmp"

Don't need quotes. With that and the indentation fixed:

I've installed yamllint and fixed this for v2.

But can you please help me understand why the members of the enum should
have double indentation here? Is it just that the indentation counts
from the 'e' and not the '-'?

Reviewed-by: Rob Herring <robh@kernel.org>

Thanks,
Bjorn

On Fri, Jul 9, 2021 at 11:29 AM Bjorn Andersson
[off-list ref] wrote:

On Thu 01 Jul 12:03 PDT 2021, Rob Herring wrote:

quoted

On Fri, Jun 25, 2021 at 04:40:17PM -0700, Bjorn Andersson wrote:

quoted

Convert to YAML in order to allow validation.

Signed-off-by: Bjorn Andersson <redacted>
---

I'm aware that this conflicts with Sibi's removal of '#power-domain-cells', but
that's a trivial change regardless of which of the two patches gets in first.

 .../bindings/soc/qcom/qcom,aoss-qmp.txt       |  90 --------------
 .../bindings/soc/qcom/qcom,aoss-qmp.yaml      | 115 ++++++++++++++++++
 2 files changed, 115 insertions(+), 90 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
 create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
deleted file mode 100644
index 3747032311a4..000000000000
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
+++ /dev/null

@@ -1,90 +0,0 @@
-Qualcomm Always-On Subsystem side channel binding
-
-This binding describes the hardware component responsible for side channel
-requests to the always-on subsystem (AOSS), used for certain power management
-requests that is not handled by the standard RPMh interface. Each client in the
-SoC has it's own block of message RAM and IRQ for communication with the AOSS.
-The protocol used to communicate in the message RAM is known as Qualcomm
-Messaging Protocol (QMP)
-
-The AOSS side channel exposes control over a set of resources, used to control
-a set of debug related clocks and to affect the low power state of resources
-related to the secondary subsystems. These resources are exposed as a set of
-power-domains.
-
-- compatible:
-   Usage: required
-   Value type: <string>
-   Definition: must be one of:
-               "qcom,sc7180-aoss-qmp"
-               "qcom,sc7280-aoss-qmp"
-               "qcom,sc8180x-aoss-qmp"
-               "qcom,sdm845-aoss-qmp"
-               "qcom,sm8150-aoss-qmp"
-               "qcom,sm8250-aoss-qmp"
-               "qcom,sm8350-aoss-qmp"
-               and:
-               "qcom,aoss-qmp"
-
-- reg:
-   Usage: required
-   Value type: <prop-encoded-array>
-   Definition: the base address and size of the message RAM for this
-               client's communication with the AOSS
-
-- interrupts:
-   Usage: required
-   Value type: <prop-encoded-array>
-   Definition: should specify the AOSS message IRQ for this client
-
-- mboxes:
-   Usage: required
-   Value type: <prop-encoded-array>
-   Definition: reference to the mailbox representing the outgoing doorbell
-               in APCS for this client, as described in mailbox/mailbox.txt
-
-- #clock-cells:
-   Usage: optional
-   Value type: <u32>
-   Definition: must be 0
-               The single clock represents the QDSS clock.
-
-- #power-domain-cells:
-   Usage: optional
-   Value type: <u32>
-   Definition: must be 1
-               The provided power-domains are:
-               CDSP state (0), LPASS state (1), modem state (2), SLPI
-               state (3), SPSS state (4) and Venus state (5).
-
-= SUBNODES
-The AOSS side channel also provides the controls for three cooling devices,
-these are expressed as subnodes of the QMP node. The name of the node is used
-to identify the resource and must therefor be "cx", "mx" or "ebi".
-
-- #cooling-cells:
-   Usage: optional
-   Value type: <u32>
-   Definition: must be 2
-
-= EXAMPLE
-
-The following example represents the AOSS side-channel message RAM and the
-mechanism exposing the power-domains, as found in SDM845.
-
-  aoss_qmp: qmp@c300000 {
-     compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
-     reg = <0x0c300000 0x100000>;
-     interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
-     mboxes = <&apss_shared 0>;
-
-     #power-domain-cells = <1>;
-
-     cx_cdev: cx {
-           #cooling-cells = <2>;
-     };
-
-     mx_cdev: mx {
-           #cooling-cells = <2>;
-     };
-  };

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
new file mode 100644
index 000000000000..1b9de8e49356
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml

@@ -0,0 +1,115 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/qcom/qcom,aoss-qmp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Always-On Subsystem side channel binding
+
+maintainers:
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description:
+  This binding describes the hardware component responsible for side channel
+  requests to the always-on subsystem (AOSS), used for certain power management
+  requests that is not handled by the standard RPMh interface. Each client in the
+  SoC has it's own block of message RAM and IRQ for communication with the AOSS.
+  The protocol used to communicate in the message RAM is known as Qualcomm
+  Messaging Protocol (QMP)
+
+  The AOSS side channel exposes control over a set of resources, used to control
+  a set of debug related clocks and to affect the low power state of resources
+  related to the secondary subsystems. These resources are exposed as a set of
+  power-domains.
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - "qcom,sc7180-aoss-qmp"
+        - "qcom,sc7280-aoss-qmp"
+        - "qcom,sc8180x-aoss-qmp"
+        - "qcom,sdm845-aoss-qmp"
+        - "qcom,sm8150-aoss-qmp"
+        - "qcom,sm8250-aoss-qmp"
+        - "qcom,sm8350-aoss-qmp"
+      - const: "qcom,aoss-qmp"

Don't need quotes. With that and the indentation fixed:

I've installed yamllint and fixed this for v2.

But can you please help me understand why the members of the enum should
have double indentation here? Is it just that the indentation counts
from the 'e' and not the '-'?

There's 2 established styles for this. You used one and I picked the
other. I feel that having the extra indent helps distinguish from
missing a '-' which is quite easy to do and miss when staring at the
YAML.

Rob

It seems we don't need platform specific implementation for the AOSS
QMP, so let's introduce a generic compatible to avoid having to update
the driver for each platform.

Signed-off-by: Bjorn Andersson <redacted>
---
 drivers/soc/qcom/qcom_aoss.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c
index 934fcc4d2b05..92a1af70a649 100644
--- a/drivers/soc/qcom/qcom_aoss.c
+++ b/drivers/soc/qcom/qcom_aoss.c

@@ -602,6 +602,7 @@ static const struct of_device_id qmp_dt_match[] = {
 	{ .compatible = "qcom,sm8150-aoss-qmp", },
 	{ .compatible = "qcom,sm8250-aoss-qmp", },
 	{ .compatible = "qcom,sm8350-aoss-qmp", },
+	{ .compatible = "qcom,aoss-qmp", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, qmp_dt_match);

-- 
2.29.2