mirror of
https://github.com/torvalds/linux.git
synced 2026-06-01 19:13:47 +02:00
dt-bindings: cpufreq: Convert ti-cpufreq to json schema
Move the ti-cpufreq binding over to opp and convert the free text binding to json-schema. Reviewed-by: Dhruva Gole <d-gole@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Nishanth Menon
Viresh Kumar
parent
bbc2bf1388
commit
e576a9a860
|
|
@ -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>;
|
|
||||||
};
|
|
||||||
};
|
|
||||||
|
|
@ -0,0 +1,92 @@
|
||||||
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
||||||
|
%YAML 1.2
|
||||||
|
---
|
||||||
|
$id: http://devicetree.org/schemas/opp/operating-points-v2-ti-cpu.yaml#
|
||||||
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||||||
|
|
||||||
|
title: TI CPU OPP (Operating Performance Points)
|
||||||
|
|
||||||
|
description:
|
||||||
|
TI SoCs, like those in the AM335x, AM437x, AM57xx, AM62x, and DRA7xx
|
||||||
|
families, the CPU frequencies subset and the voltage value of each
|
||||||
|
OPP vary based on the silicon variant used. The data sheet sections
|
||||||
|
corresponding to "Operating Performance Points" describe the frequency
|
||||||
|
and voltage values based on device type and speed bin information
|
||||||
|
blown in corresponding eFuse bits as referred to by the Technical
|
||||||
|
Reference Manual.
|
||||||
|
|
||||||
|
This document extends the operating-points-v2 binding by providing
|
||||||
|
the hardware description for the scheme mentioned above.
|
||||||
|
|
||||||
|
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:
|
||||||
|
- |
|
||||||
|
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>;
|
||||||
|
};
|
||||||
|
};
|
||||||
Loading…
Reference in New Issue
Block a user