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authorLinus Torvalds <torvalds@linux-foundation.org>2024-03-12 20:35:24 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2024-03-12 20:35:24 +0300
commit2184dbcde47aefd5358b14463a0d993013f5609e (patch)
treeec6c26a1190de98b4826223e425a1f5d60439f4c /Documentation/devicetree/bindings/arm
parent306bee64b73c92f43df46db7e92621f3309fd28b (diff)
parent049238d24467e3d2121e8ef2abef1149be6722e9 (diff)
downloadlinux-2184dbcde47aefd5358b14463a0d993013f5609e.tar.xz
Merge tag 'soc-drivers-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC driver updates from Arnd Bergmann: "This is the usual mix of updates for drivers that are used on (mostly ARM) SoCs with no other top-level subsystem tree, including: - The SCMI firmware subsystem gains support for version 3.2 of the specification and updates to the notification code - Feature updates for Tegra and Qualcomm platforms for added hardware support - A number of platforms get soc_device additions for identifying newly added chips from Renesas, Qualcomm, Mediatek and Google - Trivial improvements for firmware and memory drivers amongst others, in particular 'const' annotations throughout multiple subsystems" * tag 'soc-drivers-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (96 commits) tee: make tee_bus_type const soc: qcom: aoss: add missing kerneldoc for qmp members soc: qcom: geni-se: drop unused kerneldoc struct geni_wrapper param soc: qcom: spm: fix building with CONFIG_REGULATOR=n bus: ti-sysc: constify the struct device_type usage memory: stm32-fmc2-ebi: keep power domain on memory: stm32-fmc2-ebi: add MP25 RIF support memory: stm32-fmc2-ebi: add MP25 support memory: stm32-fmc2-ebi: check regmap_read return value dt-bindings: memory-controller: st,stm32: add MP25 support dt-bindings: bus: imx-weim: convert to YAML watchdog: s3c2410_wdt: use exynos_get_pmu_regmap_by_phandle() for PMU regs soc: samsung: exynos-pmu: Add regmap support for SoCs that protect PMU regs MAINTAINERS: Update SCMI entry with HWMON driver MAINTAINERS: samsung: gs101: match patches touching Google Tensor SoC memory: tegra: Fix indentation memory: tegra: Add BPMP and ICC info for DLA clients memory: tegra: Correct DLA client names dt-bindings: memory: renesas,rpc-if: Document R-Car V4M support firmware: arm_scmi: Update the supported clock protocol version ...
Diffstat (limited to 'Documentation/devicetree/bindings/arm')
-rw-r--r--Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt58
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diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt b/Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt
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-SPM AVS Wrapper 2 (SAW2)
-
-The SAW2 is a wrapper around the Subsystem Power Manager (SPM) and the
-Adaptive Voltage Scaling (AVS) hardware. The SPM is a programmable
-power-controller that transitions a piece of hardware (like a processor or
-subsystem) into and out of low power modes via a direct connection to
-the PMIC. It can also be wired up to interact with other processors in the
-system, notifying them when a low power state is entered or exited.
-
-Multiple revisions of the SAW hardware are supported using these Device Nodes.
-SAW2 revisions differ in the register offset and configuration data. Also, the
-same revision of the SAW in different SoCs may have different configuration
-data due the differences in hardware capabilities. Hence the SoC name, the
-version of the SAW hardware in that SoC and the distinction between cpu (big
-or Little) or cache, may be needed to uniquely identify the SAW register
-configuration and initialization data. The compatible string is used to
-indicate this parameter.
-
-PROPERTIES
-
-- compatible:
- Usage: required
- Value type: <string>
- Definition: Must have
- "qcom,saw2"
- A more specific value could be one of:
- "qcom,apq8064-saw2-v1.1-cpu"
- "qcom,msm8226-saw2-v2.1-cpu"
- "qcom,msm8974-saw2-v2.1-cpu"
- "qcom,apq8084-saw2-v2.1-cpu"
-
-- reg:
- Usage: required
- Value type: <prop-encoded-array>
- Definition: the first element specifies the base address and size of
- the register region. An optional second element specifies
- the base address and size of the alias register region.
-
-- regulator:
- Usage: optional
- Value type: boolean
- Definition: Indicates that this SPM device acts as a regulator device
- device for the core (CPU or Cache) the SPM is attached
- to.
-
-Example 1:
-
- power-controller@2099000 {
- compatible = "qcom,saw2";
- reg = <0x02099000 0x1000>, <0x02009000 0x1000>;
- regulator;
- };
-
-Example 2:
- saw0: power-controller@f9089000 {
- compatible = "qcom,apq8084-saw2-v2.1-cpu", "qcom,saw2";
- reg = <0xf9089000 0x1000>, <0xf9009000 0x1000>;
- };