[5/5] dt-bindings: cpufreq: Convert ti-cpufreq.txt to yaml binding
Commit Message
Move the ti-cpufreq binding over to opp and convert to yaml
Signed-off-by: Nishanth Menon <nm@ti.com>
---
.../bindings/cpufreq/ti-cpufreq.txt | 132 ------------------
.../bindings/opp/opp-v2-ti-cpu.yaml | 88 ++++++++++++
2 files changed, 88 insertions(+), 132 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt
create mode 100644 Documentation/devicetree/bindings/opp/opp-v2-ti-cpu.yaml
Comments
On Mon, Jul 24, 2023 at 10:39:11AM -0500, Nishanth Menon wrote:
> Move the ti-cpufreq binding over to opp and convert to yaml
>
> Signed-off-by: Nishanth Menon <nm@ti.com>
> ---
> .../bindings/cpufreq/ti-cpufreq.txt | 132 ------------------
> .../bindings/opp/opp-v2-ti-cpu.yaml | 88 ++++++++++++
> 2 files changed, 88 insertions(+), 132 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt
> create mode 100644 Documentation/devicetree/bindings/opp/opp-v2-ti-cpu.yaml
> diff --git a/Documentation/devicetree/bindings/opp/opp-v2-ti-cpu.yaml b/Documentation/devicetree/bindings/opp/opp-v2-ti-cpu.yaml
> new file mode 100644
> index 000000000000..758f6da619a8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/opp/opp-v2-ti-cpu.yaml
Filename matching the compatible.
> @@ -0,0 +1,88 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/opp/opp-v2-ti-cpu.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: TI CPU OPP
> +
> +description: |
Don't need '|'.
> + Certain TI SoCs, like those in the am335x, am437x, am57xx, am62x and dra7xx
> + families support different OPPs depending on the silicon variant in use.
> + The ti-cpufreq driver can use revision and an efuse value from the SoC to
> + provide the OPP framework with supported hardware information. This is
> + used to determine which OPPs from the operating-points-v2 table get enabled
> + when it is parsed by the OPP framework.
> +
> +maintainers:
> + - Nishanth Menon <nm@ti.com>
> +
> +allOf:
> + - $ref: opp-v2-base.yaml#
> +
> +properties:
> + compatible:
> + const: operating-points-v2-ti-cpu
> +
> + syscon:
> + $ref: /schemas/types.yaml#/definitions/phandle
> + description: |
> + points to syscon node representing the control module
> + register space of the SoC.
> +
> + opp-shared: true
> +
> +patternProperties:
> + '^opp(-?[0-9]+)*$':
> + type: object
> + additionalProperties: false
> +
> + properties:
> + clock-latency-ns: true
> + opp-hz: true
> + opp-microvolt: true
> + opp-supported-hw: true
> + opp-suspend: true
> + turbo-mode: true
> +
> + required:
> + - opp-hz
> + - opp-supported-hw
> +
> +required:
> + - compatible
> + - syscon
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + cpu0_opp_table: opp-table {
Drop unused labels
> + compatible = "operating-points-v2-ti-cpu";
> + syscon = <&scm_conf>;
> +
> + opp-300000000 {
> + opp-hz = /bits/ 64 <300000000>;
> + opp-microvolt = <1100000 1078000 1122000>;
> + opp-supported-hw = <0x06 0x0020>;
> + opp-suspend;
> + };
> +
> + opp-500000000 {
> + opp-hz = /bits/ 64 <500000000>;
> + opp-microvolt = <1100000 1078000 1122000>;
> + opp-supported-hw = <0x01 0xFFFF>;
> + };
> +
> + opp-600000000 {
> + opp-hz = /bits/ 64 <600000000>;
> + opp-microvolt = <1100000 1078000 1122000>;
> + opp-supported-hw = <0x06 0x0040>;
> + };
> +
> + opp-1000000000 {
> + opp-hz = /bits/ 64 <1000000000>;
> + opp-microvolt = <1325000 1298500 1351500>;
> + opp-supported-hw = <0x04 0x0200>;
> + };
> + };
> --
> 2.40.0
>
On 11:14-20230726, Rob Herring wrote:
> > diff --git a/Documentation/devicetree/bindings/opp/opp-v2-ti-cpu.yaml b/Documentation/devicetree/bindings/opp/opp-v2-ti-cpu.yaml
> > new file mode 100644
> > index 000000000000..758f6da619a8
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/opp/opp-v2-ti-cpu.yaml
>
> Filename matching the compatible.
operating-points-v2-ti-cpu.yaml, OK
>
> > @@ -0,0 +1,88 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/opp/opp-v2-ti-cpu.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: TI CPU OPP
> > +
> > +description: |
>
> Don't need '|'.
OK
>
[..]
> > +
> > +examples:
> > + - |
> > + cpu0_opp_table: opp-table {
>
> Drop unused labels
Uggh.. yep, thanks.
[...]
deleted file mode 100644
@@ -1,132 +0,0 @@
-TI CPUFreq and OPP bindings
-================================
-
-Certain TI SoCs, like those in the am335x, am437x, am57xx, and dra7xx
-families support different OPPs depending on the silicon variant in use.
-The ti-cpufreq driver can use revision and an efuse value from the SoC to
-provide the OPP framework with supported hardware information. This is
-used to determine which OPPs from the operating-points-v2 table get enabled
-when it is parsed by the OPP framework.
-
-Required properties:
---------------------
-In 'cpus' nodes:
-- operating-points-v2: Phandle to the operating-points-v2 table to use.
-
-In 'operating-points-v2' table:
-- compatible: Should be
- - 'operating-points-v2-ti-cpu' for am335x, am43xx, and dra7xx/am57xx,
- omap34xx, omap36xx and am3517 SoCs
-- syscon: A phandle pointing to a syscon node representing the control module
- register space of the SoC.
-
-Optional properties:
---------------------
-- "vdd-supply", "vbb-supply": to define two regulators for dra7xx
-- "cpu0-supply", "vbb-supply": to define two regulators for omap36xx
-
-For each opp entry in 'operating-points-v2' table:
-- opp-supported-hw: Two bitfields indicating:
- 1. Which revision of the SoC the OPP is supported by
- 2. Which eFuse bits indicate this OPP is available
-
- A bitwise AND is performed against these values and if any bit
- matches, the OPP gets enabled.
-
-Example:
---------
-
-/* From arch/arm/boot/dts/am33xx.dtsi */
-cpus {
- #address-cells = <1>;
- #size-cells = <0>;
- cpu@0 {
- compatible = "arm,cortex-a8";
- device_type = "cpu";
- reg = <0>;
-
- operating-points-v2 = <&cpu0_opp_table>;
-
- clocks = <&dpll_mpu_ck>;
- clock-names = "cpu";
-
- clock-latency = <300000>; /* From omap-cpufreq driver */
- };
-};
-
-/*
- * cpu0 has different OPPs depending on SoC revision and some on revisions
- * 0x2 and 0x4 have eFuse bits that indicate if they are available or not
- */
-cpu0_opp_table: opp-table {
- compatible = "operating-points-v2-ti-cpu";
- syscon = <&scm_conf>;
-
- /*
- * The three following nodes are marked with opp-suspend
- * because they can not be enabled simultaneously on a
- * single SoC.
- */
- opp50-300000000 {
- opp-hz = /bits/ 64 <300000000>;
- opp-microvolt = <950000 931000 969000>;
- opp-supported-hw = <0x06 0x0010>;
- opp-suspend;
- };
-
- opp100-275000000 {
- opp-hz = /bits/ 64 <275000000>;
- opp-microvolt = <1100000 1078000 1122000>;
- opp-supported-hw = <0x01 0x00FF>;
- opp-suspend;
- };
-
- opp100-300000000 {
- opp-hz = /bits/ 64 <300000000>;
- opp-microvolt = <1100000 1078000 1122000>;
- opp-supported-hw = <0x06 0x0020>;
- opp-suspend;
- };
-
- opp100-500000000 {
- opp-hz = /bits/ 64 <500000000>;
- opp-microvolt = <1100000 1078000 1122000>;
- opp-supported-hw = <0x01 0xFFFF>;
- };
-
- opp100-600000000 {
- opp-hz = /bits/ 64 <600000000>;
- opp-microvolt = <1100000 1078000 1122000>;
- opp-supported-hw = <0x06 0x0040>;
- };
-
- opp120-600000000 {
- opp-hz = /bits/ 64 <600000000>;
- opp-microvolt = <1200000 1176000 1224000>;
- opp-supported-hw = <0x01 0xFFFF>;
- };
-
- opp120-720000000 {
- opp-hz = /bits/ 64 <720000000>;
- opp-microvolt = <1200000 1176000 1224000>;
- opp-supported-hw = <0x06 0x0080>;
- };
-
- oppturbo-720000000 {
- opp-hz = /bits/ 64 <720000000>;
- opp-microvolt = <1260000 1234800 1285200>;
- opp-supported-hw = <0x01 0xFFFF>;
- };
-
- oppturbo-800000000 {
- opp-hz = /bits/ 64 <800000000>;
- opp-microvolt = <1260000 1234800 1285200>;
- opp-supported-hw = <0x06 0x0100>;
- };
-
- oppnitro-1000000000 {
- opp-hz = /bits/ 64 <1000000000>;
- opp-microvolt = <1325000 1298500 1351500>;
- opp-supported-hw = <0x04 0x0200>;
- };
-};
new file mode 100644
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/opp/opp-v2-ti-cpu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI CPU OPP
+
+description: |
+ Certain TI SoCs, like those in the am335x, am437x, am57xx, am62x and dra7xx
+ families support different OPPs depending on the silicon variant in use.
+ The ti-cpufreq driver can use revision and an efuse value from the SoC to
+ provide the OPP framework with supported hardware information. This is
+ used to determine which OPPs from the operating-points-v2 table get enabled
+ when it is parsed by the OPP framework.
+
+maintainers:
+ - Nishanth Menon <nm@ti.com>
+
+allOf:
+ - $ref: opp-v2-base.yaml#
+
+properties:
+ compatible:
+ const: operating-points-v2-ti-cpu
+
+ syscon:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: |
+ points to syscon node representing the control module
+ register space of the SoC.
+
+ opp-shared: true
+
+patternProperties:
+ '^opp(-?[0-9]+)*$':
+ type: object
+ additionalProperties: false
+
+ properties:
+ clock-latency-ns: true
+ opp-hz: true
+ opp-microvolt: true
+ opp-supported-hw: true
+ opp-suspend: true
+ turbo-mode: true
+
+ required:
+ - opp-hz
+ - opp-supported-hw
+
+required:
+ - compatible
+ - syscon
+
+additionalProperties: false
+
+examples:
+ - |
+ cpu0_opp_table: opp-table {
+ compatible = "operating-points-v2-ti-cpu";
+ syscon = <&scm_conf>;
+
+ opp-300000000 {
+ opp-hz = /bits/ 64 <300000000>;
+ opp-microvolt = <1100000 1078000 1122000>;
+ opp-supported-hw = <0x06 0x0020>;
+ opp-suspend;
+ };
+
+ opp-500000000 {
+ opp-hz = /bits/ 64 <500000000>;
+ opp-microvolt = <1100000 1078000 1122000>;
+ opp-supported-hw = <0x01 0xFFFF>;
+ };
+
+ opp-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <1100000 1078000 1122000>;
+ opp-supported-hw = <0x06 0x0040>;
+ };
+
+ opp-1000000000 {
+ opp-hz = /bits/ 64 <1000000000>;
+ opp-microvolt = <1325000 1298500 1351500>;
+ opp-supported-hw = <0x04 0x0200>;
+ };
+ };