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authorLinus Torvalds <torvalds@linux-foundation.org>2022-05-30 21:37:26 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-05-30 21:37:26 +0300
commit1ff7bc3ba71d398d349c49103a3da34bb4ea02d1 (patch)
tree96aa1beec3cff400dd342687cafa306ee0a76200 /Documentation/devicetree
parent32665a9e5432fd88fe20f4affa8986833bbbabe7 (diff)
parent9f9c1f6844bdacb4a011cc69e19b929997038f4f (diff)
downloadlinux-1ff7bc3ba71d398d349c49103a3da34bb4ea02d1.tar.xz
Merge tag 'pm-5.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki: "These update the ARM cpufreq drivers and fix up the CPPC cpufreq driver after recent changes, update the OPP code and PM documentation and add power sequences support to the system reboot and power off code. Specifics: - Add Tegra234 cpufreq support (Sumit Gupta) - Clean up and enhance the Mediatek cpufreq driver (Wan Jiabing, Rex-BC Chen, and Jia-Wei Chang) - Fix up the CPPC cpufreq driver after recent changes (Zheng Bin, Pierre Gondois) - Minor update to dt-binding for Qcom's opp-v2-kryo-cpu (Yassine Oudjana) - Use list iterator only inside the list_for_each_entry loop (Xiaomeng Tong, and Jakob Koschel) - New APIs related to finding OPP based on interconnect bandwidth (Krzysztof Kozlowski) - Fix the missing of_node_put() in _bandwidth_supported() (Dan Carpenter) - Cleanups (Krzysztof Kozlowski, and Viresh Kumar) - Add Out of Band mode description to the intel-speed-select utility documentation (Srinivas Pandruvada) - Add power sequences support to the system reboot and power off code and make related platform-specific changes for multiple platforms (Dmitry Osipenko, Geert Uytterhoeven)" * tag 'pm-5.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (60 commits) cpufreq: CPPC: Fix unused-function warning cpufreq: CPPC: Fix build error without CONFIG_ACPI_CPPC_CPUFREQ_FIE Documentation: admin-guide: PM: Add Out of Band mode kernel/reboot: Change registration order of legacy power-off handler m68k: virt: Switch to new sys-off handler API kernel/reboot: Add devm_register_restart_handler() kernel/reboot: Add devm_register_power_off_handler() soc/tegra: pmc: Use sys-off handler API to power off Nexus 7 properly reboot: Remove pm_power_off_prepare() regulator: pfuze100: Use devm_register_sys_off_handler() ACPI: power: Switch to sys-off handler API memory: emif: Use kernel_can_power_off() mips: Use do_kernel_power_off() ia64: Use do_kernel_power_off() x86: Use do_kernel_power_off() sh: Use do_kernel_power_off() m68k: Switch to new sys-off handler API powerpc: Use do_kernel_power_off() xen/x86: Use do_kernel_power_off() parisc: Use do_kernel_power_off() ...
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/arm/tegra/nvidia,tegra-ccplex-cluster.yaml52
-rw-r--r--Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt7
-rw-r--r--Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml56
3 files changed, 85 insertions, 30 deletions
diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra-ccplex-cluster.yaml b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra-ccplex-cluster.yaml
new file mode 100644
index 000000000000..8c6543b5c0dc
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra-ccplex-cluster.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/arm/tegra/nvidia,tegra-ccplex-cluster.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: NVIDIA Tegra CPU COMPLEX CLUSTER area device tree bindings
+
+maintainers:
+ - Sumit Gupta <sumitg@nvidia.com>
+ - Mikko Perttunen <mperttunen@nvidia.com>
+ - Jon Hunter <jonathanh@nvidia.com>
+ - Thierry Reding <thierry.reding@gmail.com>
+
+description: |+
+ The Tegra CPU COMPLEX CLUSTER area contains memory-mapped
+ registers that initiate CPU frequency/voltage transitions.
+
+properties:
+ $nodename:
+ pattern: "ccplex@([0-9a-f]+)$"
+
+ compatible:
+ enum:
+ - nvidia,tegra186-ccplex-cluster
+ - nvidia,tegra234-ccplex-cluster
+
+ reg:
+ maxItems: 1
+
+ nvidia,bpmp:
+ $ref: '/schemas/types.yaml#/definitions/phandle'
+ description: |
+ Specifies the BPMP node that needs to be queried to get
+ operating point data for all CPUs.
+
+additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - nvidia,bpmp
+ - status
+
+examples:
+ - |
+ ccplex@e000000 {
+ compatible = "nvidia,tegra234-ccplex-cluster";
+ reg = <0x0e000000 0x5ffff>;
+ nvidia,bpmp = <&bpmp>;
+ status = "okay";
+ };
diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt
index b8233ec91d3d..e0a4ba599abc 100644
--- a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt
+++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt
@@ -20,6 +20,13 @@ Optional properties:
Vsram to fit SoC specific needs. When absent, the voltage scaling
flow is handled by hardware, hence no software "voltage tracking" is
needed.
+- mediatek,cci:
+ Used to confirm the link status between cpufreq and mediatek cci. Because
+ cpufreq and mediatek cci could share the same regulator in some MediaTek SoCs.
+ To prevent the issue of high frequency and low voltage, we need to use this
+ property to make sure mediatek cci is ready.
+ For details of mediatek cci, please refer to
+ Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml
- #cooling-cells:
For details, please refer to
Documentation/devicetree/bindings/thermal/thermal-cooling-devices.yaml
diff --git a/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml b/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
index 8c2e9ac5f68d..30f7b596d609 100644
--- a/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
+++ b/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
@@ -17,10 +17,10 @@ description: |
the CPU frequencies subset and voltage value of each OPP varies based on
the silicon variant in use.
Qualcomm Technologies, Inc. Process Voltage Scaling Tables
- defines the voltage and frequency value based on the msm-id in SMEM
- and speedbin blown in the efuse combination.
- The qcom-cpufreq-nvmem driver reads the msm-id and efuse value from the SoC
- to provide the OPP framework with required information (existing HW bitmap).
+ defines the voltage and frequency value based on the speedbin blown in
+ the efuse combination.
+ The qcom-cpufreq-nvmem driver reads the efuse value from the SoC to provide
+ the OPP framework with required information (existing HW bitmap).
This is used to determine the voltage and frequency value for each OPP of
operating-points-v2 table when it is parsed by the OPP framework.
@@ -50,15 +50,11 @@ patternProperties:
description: |
A single 32 bit bitmap value, representing compatible HW.
Bitmap:
- 0: MSM8996 V3, speedbin 0
- 1: MSM8996 V3, speedbin 1
- 2: MSM8996 V3, speedbin 2
- 3: unused
- 4: MSM8996 SG, speedbin 0
- 5: MSM8996 SG, speedbin 1
- 6: MSM8996 SG, speedbin 2
- 7-31: unused
- maximum: 0x77
+ 0: MSM8996, speedbin 0
+ 1: MSM8996, speedbin 1
+ 2: MSM8996, speedbin 2
+ 3-31: unused
+ maximum: 0x7
clock-latency-ns: true
@@ -184,19 +180,19 @@ examples:
opp-307200000 {
opp-hz = /bits/ 64 <307200000>;
opp-microvolt = <905000 905000 1140000>;
- opp-supported-hw = <0x77>;
+ opp-supported-hw = <0x7>;
clock-latency-ns = <200000>;
};
- opp-1593600000 {
- opp-hz = /bits/ 64 <1593600000>;
+ opp-1401600000 {
+ opp-hz = /bits/ 64 <1401600000>;
opp-microvolt = <1140000 905000 1140000>;
- opp-supported-hw = <0x71>;
+ opp-supported-hw = <0x5>;
clock-latency-ns = <200000>;
};
- opp-2188800000 {
- opp-hz = /bits/ 64 <2188800000>;
+ opp-1593600000 {
+ opp-hz = /bits/ 64 <1593600000>;
opp-microvolt = <1140000 905000 1140000>;
- opp-supported-hw = <0x10>;
+ opp-supported-hw = <0x1>;
clock-latency-ns = <200000>;
};
};
@@ -209,25 +205,25 @@ examples:
opp-307200000 {
opp-hz = /bits/ 64 <307200000>;
opp-microvolt = <905000 905000 1140000>;
- opp-supported-hw = <0x77>;
+ opp-supported-hw = <0x7>;
clock-latency-ns = <200000>;
};
- opp-1593600000 {
- opp-hz = /bits/ 64 <1593600000>;
+ opp-1804800000 {
+ opp-hz = /bits/ 64 <1804800000>;
opp-microvolt = <1140000 905000 1140000>;
- opp-supported-hw = <0x70>;
+ opp-supported-hw = <0x6>;
clock-latency-ns = <200000>;
};
- opp-2150400000 {
- opp-hz = /bits/ 64 <2150400000>;
+ opp-1900800000 {
+ opp-hz = /bits/ 64 <1900800000>;
opp-microvolt = <1140000 905000 1140000>;
- opp-supported-hw = <0x31>;
+ opp-supported-hw = <0x4>;
clock-latency-ns = <200000>;
};
- opp-2342400000 {
- opp-hz = /bits/ 64 <2342400000>;
+ opp-2150400000 {
+ opp-hz = /bits/ 64 <2150400000>;
opp-microvolt = <1140000 905000 1140000>;
- opp-supported-hw = <0x10>;
+ opp-supported-hw = <0x1>;
clock-latency-ns = <200000>;
};
};