diff mbox series

[3/3] dt-bindings: hsi: omap-ssi: convert to YAML

Message ID 20240325-hsi-dt-binding-v1-3-88e8e97c3aae@collabora.com (mailing list archive)
State New, archived
Headers show
Series Convert MIPI HSI DT bindings to YAML | expand

Commit Message

Sebastian Reichel March 25, 2024, 9:45 p.m. UTC 
Convert the legacy txt binding to modern YAML.
No semantic change.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
 Documentation/devicetree/bindings/hsi/omap-ssi.txt | 102 -----------
 .../devicetree/bindings/hsi/ti,omap-ssi.yaml       | 196 +++++++++++++++++++++
 2 files changed, 196 insertions(+), 102 deletions(-)

Comments

Krzysztof Kozlowski March 26, 2024, 7:26 a.m. UTC | #1 
On 25/03/2024 22:45, Sebastian Reichel wrote:
> Convert the legacy txt binding to modern YAML.
> No semantic change.

You deprecated a property: ti,hwmods. Also will be one more change:
ti,ssi-cawake-gpio->gpios

> 
> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
> ---
>  Documentation/devicetree/bindings/hsi/omap-ssi.txt | 102 -----------
>  .../devicetree/bindings/hsi/ti,omap-ssi.yaml       | 196 +++++++++++++++++++++
>  2 files changed, 196 insertions(+), 102 deletions(-)
> 

...

> diff --git a/Documentation/devicetree/bindings/hsi/ti,omap-ssi.yaml b/Documentation/devicetree/bindings/hsi/ti,omap-ssi.yaml
> new file mode 100644
> index 000000000000..eb82f85c25b6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hsi/ti,omap-ssi.yaml
> @@ -0,0 +1,196 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/hsi/ti,omap-ssi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: SSI Controller on OMAP SoCs
> +
> +description:
> +  OMAP3's Synchronous Serial Interface (SSI) controller implements a
> +  legacy variant of MIPI's High Speed Synchronous Serial Interface (HSI),
> +  while the controller found inside OMAP4 is supposed to be fully compliant
> +  with the HSI standard.
> +
> +maintainers:
> +  - Sebastian Reichel <sre@kernel.org>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,omap3-ssi
> +      - ti,omap4-hsi
> +
> +  reg:
> +    items:
> +      - description: registers for sys
> +      - description: registers for gdd
> +
> +  reg-names:
> +    items:
> +      - const: sys
> +      - const: gdd
> +
> +  ranges: true
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 1
> +
> +  clocks:
> +    minItems: 1
> +    maxItems: 3
> +
> +  clock-names:
> +    minItems: 1
> +    maxItems: 3
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  interrupt-names:
> +    const: gdd_mpu
> +
> +  ti,hwmods:
> +    const: ssi
> +    deprecated: true
> +
> +patternProperties:
> +  "[hs]si-port@[0-9a-f]+":

Does anything actually depends on the name? Can these be "port@[0-9a-f]+"?

> +    type: object
> +

Drop blank line.

> +    additionalProperties: false
> +
> +    properties:
> +      compatible:
> +        enum:
> +          - ti,omap3-ssi-port
> +          - ti,omap4-hsi-port
> +
> +      reg:
> +        items:
> +          - description: TX registers
> +          - description: RX registers
> +
> +      reg-names:
> +        items:
> +          - const: tx
> +          - const: rx
> +
> +      interrupts:
> +        items:
> +          - description: MPU interrupt 0
> +          - description: MPU interrupt 1
> +        minItems: 1
> +
> +      ti,ssi-cawake-gpio:

ti,ssi-cawake-gpios

> +        description: GPIO signifying CAWAKE events
> +        maxItems: 1
> +
> +      hsi-client:
> +        type: object

On this level, should be explicit: additionalProperties: true

> +        $ref: /schemas/hsi/hsi-client.yaml#
> +
> +    required:
> +      - compatible
> +      - reg
> +      - reg-names
> +      - interrupts
> +
> +    allOf:
> +      - if:
> +          properties:
> +            compatible:
> +              contains:
> +                const: ti,omap3-ssi-port
> +        then:
> +          properties:
> +            $nodename:
> +              pattern: "^ssi-port@(.*)?$"
> +            interrupts:
> +              minItems: 2
> +        else:
> +          properties:
> +            $nodename:
> +              pattern: "^hsi-port@(.*)?$"
> +            interrupts:
> +              maxItems: 1
> +
> +additionalProperties: false

This goes after allOf: block

> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - ranges
> +  - "#address-cells"
> +  - "#size-cells"
> +  - clocks
> +  - clock-names
> +  - interrupts
> +  - interrupt-names
> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: ti,omap3-ssi
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 3
> +        clock-names:
> +          items:
> +            - const: ssi_ssr_fck
> +            - const: ssi_sst_fck
> +            - const: ssi_ick
> +    else:
> +      properties:
> +        clocks:
> +          maxItems: 1
> +        clock-names:
> +          items:
> +            - const: hsi_fck
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    ssi-controller@48058000 {
> +        compatible = "ti,omap3-ssi";
> +        reg = <0x48058000 0x1000>,
> +              <0x48059000 0x1000>;
> +        reg-names = "sys", "gdd";
> +        ranges;
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +        clocks = <&ssi_ssr_fck>,
> +                 <&ssi_sst_fck>,
> +                 <&ssi_ick>;
> +        clock-names = "ssi_ssr_fck",
> +                      "ssi_sst_fck",
> +                      "ssi_ick";
> +        interrupts = <55>;
> +        interrupt-names = "gdd_mpu";
> +
> +        ssi-port@4805a000 {
> +                compatible = "ti,omap3-ssi-port";

Use 4 spaces for example indentation.

> +                reg = <0x4805a000 0x800>,


Best regards,
Krzysztof
Sebastian Reichel March 26, 2024, 1:34 p.m. UTC | #2 
Hi,

On Tue, Mar 26, 2024 at 08:26:54AM +0100, Krzysztof Kozlowski wrote:
> On 25/03/2024 22:45, Sebastian Reichel wrote:
> > Convert the legacy txt binding to modern YAML.
> > No semantic change.
> 
> You deprecated a property: ti,hwmods. Also will be one more change:
> ti,ssi-cawake-gpio->gpios

and I will introduce a simple bus binding for referencing the
peripheral. I added a list to the commit message for v2.

> >  Documentation/devicetree/bindings/hsi/omap-ssi.txt | 102 -----------
> >  .../devicetree/bindings/hsi/ti,omap-ssi.yaml       | 196 +++++++++++++++++++++
> >  2 files changed, 196 insertions(+), 102 deletions(-)

[...]

> > +patternProperties:
> > +  "[hs]si-port@[0-9a-f]+":
> 
> Does anything actually depends on the name? Can these be "port@[0-9a-f]+"?

That should work. The Linux driver is looping over all child nodes
and checking the compatible.

[...]

> > +      ti,ssi-cawake-gpio:
> 
> ti,ssi-cawake-gpios

mh, the kernel supports the extra s since 2016. I guess that should
be good enough. I will fix it in v2.

All other comments will be fixed in v2.

Thanks for the review,

-- Sebastian
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/hsi/omap-ssi.txt b/Documentation/devicetree/bindings/hsi/omap-ssi.txt
deleted file mode 100644
index 77a0c3c3036e..000000000000
--- a/Documentation/devicetree/bindings/hsi/omap-ssi.txt
+++ /dev/null
@@ -1,102 +0,0 @@ 
-OMAP SSI controller bindings
-
-OMAP3's Synchronous Serial Interface (SSI) controller implements a
-legacy variant of MIPI's High Speed Synchronous Serial Interface (HSI),
-while the controller found inside OMAP4 is supposed to be fully compliant
-with the HSI standard.
-
-Required properties:
-- compatible:		Should include "ti,omap3-ssi" or "ti,omap4-hsi"
-- reg-names:		Contains the values "sys" and "gdd" (in this order).
-- reg:			Contains a matching register specifier for each entry
-			in reg-names.
-- interrupt-names:	Contains the value "gdd_mpu".
-- interrupts: 		Contains matching interrupt information for each entry
-			in interrupt-names.
-- ranges:		Represents the bus address mapping between the main
-			controller node and the child nodes below.
-- clock-names:		Must include the following entries:
-  "ssi_ssr_fck": The OMAP clock of that name
-  "ssi_sst_fck": The OMAP clock of that name
-  "ssi_ick": The OMAP clock of that name
-- clocks:		Contains a matching clock specifier for each entry in
-			clock-names.
-- #address-cells:	Should be set to <1>
-- #size-cells:		Should be set to <1>
-
-Each port is represented as a sub-node of the ti,omap3-ssi device.
-
-Required Port sub-node properties:
-- compatible:		Should be set to the following value
-			ti,omap3-ssi-port (applicable to OMAP34xx devices)
-			ti,omap4-hsi-port (applicable to OMAP44xx devices)
-- reg-names:		Contains the values "tx" and "rx" (in this order).
-- reg:			Contains a matching register specifier for each entry
-			in reg-names.
-- interrupts:		Should contain interrupt specifiers for mpu interrupts
-			0 and 1 (in this order).
-- ti,ssi-cawake-gpio:	Defines which GPIO pin is used to signify CAWAKE
-			events for the port. This is an optional board-specific
-			property. If it's missing the port will not be
-			enabled.
-
-Optional properties:
-- ti,hwmods:		Shall contain TI interconnect module name if needed
-			by the SoC
-
-Example for Nokia N900:
-
-ssi-controller@48058000 {
-	compatible = "ti,omap3-ssi";
-
-	/* needed until hwmod is updated to use the compatible string */
-	ti,hwmods = "ssi";
-
-	reg = <0x48058000 0x1000>,
-	      <0x48059000 0x1000>;
-	reg-names = "sys",
-		    "gdd";
-
-	interrupts = <55>;
-	interrupt-names = "gdd_mpu";
-
-	clocks = <&ssi_ssr_fck>,
-		 <&ssi_sst_fck>,
-		 <&ssi_ick>;
-	clock-names = "ssi_ssr_fck",
-		      "ssi_sst_fck",
-		      "ssi_ick";
-
-	#address-cells = <1>;
-	#size-cells = <1>;
-	ranges;
-
-	ssi-port@4805a000 {
-		compatible = "ti,omap3-ssi-port";
-
-		reg = <0x4805a000 0x800>,
-		      <0x4805a800 0x800>;
-		reg-names = "tx",
-			    "rx";
-
-		interrupt-parent = <&intc>;
-		interrupts = <67>,
-			     <68>;
-
-		ti,ssi-cawake-gpio = <&gpio5 23 GPIO_ACTIVE_HIGH>; /* 151 */
-	}
-
-	ssi-port@4805a000 {
-		compatible = "ti,omap3-ssi-port";
-
-		reg = <0x4805b000 0x800>,
-		      <0x4805b800 0x800>;
-		reg-names = "tx",
-			    "rx";
-
-		interrupt-parent = <&intc>;
-		interrupts = <69>,
-			     <70>;
-
-	}
-}
diff --git a/Documentation/devicetree/bindings/hsi/ti,omap-ssi.yaml b/Documentation/devicetree/bindings/hsi/ti,omap-ssi.yaml
new file mode 100644
index 000000000000..eb82f85c25b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/hsi/ti,omap-ssi.yaml
@@ -0,0 +1,196 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hsi/ti,omap-ssi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SSI Controller on OMAP SoCs
+
+description:
+  OMAP3's Synchronous Serial Interface (SSI) controller implements a
+  legacy variant of MIPI's High Speed Synchronous Serial Interface (HSI),
+  while the controller found inside OMAP4 is supposed to be fully compliant
+  with the HSI standard.
+
+maintainers:
+  - Sebastian Reichel <sre@kernel.org>
+
+properties:
+  compatible:
+    enum:
+      - ti,omap3-ssi
+      - ti,omap4-hsi
+
+  reg:
+    items:
+      - description: registers for sys
+      - description: registers for gdd
+
+  reg-names:
+    items:
+      - const: sys
+      - const: gdd
+
+  ranges: true
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 3
+
+  clock-names:
+    minItems: 1
+    maxItems: 3
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-names:
+    const: gdd_mpu
+
+  ti,hwmods:
+    const: ssi
+    deprecated: true
+
+patternProperties:
+  "[hs]si-port@[0-9a-f]+":
+    type: object
+
+    additionalProperties: false
+
+    properties:
+      compatible:
+        enum:
+          - ti,omap3-ssi-port
+          - ti,omap4-hsi-port
+
+      reg:
+        items:
+          - description: TX registers
+          - description: RX registers
+
+      reg-names:
+        items:
+          - const: tx
+          - const: rx
+
+      interrupts:
+        items:
+          - description: MPU interrupt 0
+          - description: MPU interrupt 1
+        minItems: 1
+
+      ti,ssi-cawake-gpio:
+        description: GPIO signifying CAWAKE events
+        maxItems: 1
+
+      hsi-client:
+        type: object
+        $ref: /schemas/hsi/hsi-client.yaml#
+
+    required:
+      - compatible
+      - reg
+      - reg-names
+      - interrupts
+
+    allOf:
+      - if:
+          properties:
+            compatible:
+              contains:
+                const: ti,omap3-ssi-port
+        then:
+          properties:
+            $nodename:
+              pattern: "^ssi-port@(.*)?$"
+            interrupts:
+              minItems: 2
+        else:
+          properties:
+            $nodename:
+              pattern: "^hsi-port@(.*)?$"
+            interrupts:
+              maxItems: 1
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - ranges
+  - "#address-cells"
+  - "#size-cells"
+  - clocks
+  - clock-names
+  - interrupts
+  - interrupt-names
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,omap3-ssi
+    then:
+      properties:
+        clocks:
+          minItems: 3
+        clock-names:
+          items:
+            - const: ssi_ssr_fck
+            - const: ssi_sst_fck
+            - const: ssi_ick
+    else:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          items:
+            - const: hsi_fck
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    ssi-controller@48058000 {
+        compatible = "ti,omap3-ssi";
+        reg = <0x48058000 0x1000>,
+              <0x48059000 0x1000>;
+        reg-names = "sys", "gdd";
+        ranges;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        clocks = <&ssi_ssr_fck>,
+                 <&ssi_sst_fck>,
+                 <&ssi_ick>;
+        clock-names = "ssi_ssr_fck",
+                      "ssi_sst_fck",
+                      "ssi_ick";
+        interrupts = <55>;
+        interrupt-names = "gdd_mpu";
+
+        ssi-port@4805a000 {
+                compatible = "ti,omap3-ssi-port";
+                reg = <0x4805a000 0x800>,
+                      <0x4805a800 0x800>;
+                reg-names = "tx", "rx";
+                interrupt-parent = <&intc>;
+                interrupts = <67>, <68>;
+                ti,ssi-cawake-gpio = <&gpio5 23 GPIO_ACTIVE_HIGH>;
+        };
+
+        ssi-port@4805b000 {
+                compatible = "ti,omap3-ssi-port";
+                reg = <0x4805b000 0x800>,
+                      <0x4805b800 0x800>;
+                reg-names = "tx", "rx";
+                interrupt-parent = <&intc>;
+                interrupts = <69>, <70>;
+        };
+    };