Convert the CoreSight CPU debug binding to DT schema format. Reviewed-by: Leo Yan <leo.yan@xxxxxxxxxx> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> Signed-off-by: Rob Herring <robh@xxxxxxxxxx> --- v2: - Update MAINTAINERS entry --- .../bindings/arm/arm,coresight-cpu-debug.yaml | 81 +++++++++++++++++++ .../bindings/arm/coresight-cpu-debug.txt | 49 ----------- MAINTAINERS | 1 - 3 files changed, 81 insertions(+), 50 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/arm,coresight-cpu-debug.yaml delete mode 100644 Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt diff --git a/Documentation/devicetree/bindings/arm/arm,coresight-cpu-debug.yaml b/Documentation/devicetree/bindings/arm/arm,coresight-cpu-debug.yaml new file mode 100644 index 000000000000..0a6bc03ebe00 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/arm,coresight-cpu-debug.yaml @@ -0,0 +1,81 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/arm,coresight-cpu-debug.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: CoreSight CPU Debug Component + +maintainers: + - Mathieu Poirier <mathieu.poirier@xxxxxxxxxx> + - Mike Leach <mike.leach@xxxxxxxxxx> + - Leo Yan <leo.yan@xxxxxxxxxx> + - Suzuki K Poulose <suzuki.poulose@xxxxxxx> + +description: | + CoreSight CPU debug component are compliant with the ARMv8 architecture + reference manual (ARM DDI 0487A.k) Chapter 'Part H: External debug'. The + external debug module is mainly used for two modes: self-hosted debug and + external debug, and it can be accessed from mmio region from Coresight and + eventually the debug module connects with CPU for debugging. And the debug + module provides sample-based profiling extension, which can be used to sample + CPU program counter, secure state and exception level, etc; usually every CPU + has one dedicated debug module to be connected. + +select: + properties: + compatible: + contains: + const: arm,coresight-cpu-debug + required: + - compatible + +allOf: + - $ref: /schemas/arm/primecell.yaml# + +properties: + compatible: + items: + - const: arm,coresight-cpu-debug + - const: arm,primecell + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + maxItems: 1 + + cpu: + description: + A phandle to the cpu this debug component is bound to. + $ref: /schemas/types.yaml#/definitions/phandle + + power-domains: + maxItems: 1 + description: + A phandle to the debug power domain if the debug logic has its own + dedicated power domain. CPU idle states may also need to be separately + constrained to keep CPU cores powered. + +required: + - compatible + - reg + - clocks + - clock-names + - cpu + +unevaluatedProperties: false + +examples: + - | + debug@f6590000 { + compatible = "arm,coresight-cpu-debug", "arm,primecell"; + reg = <0xf6590000 0x1000>; + clocks = <&sys_ctrl 1>; + clock-names = "apb_pclk"; + cpu = <&cpu0>; + }; +... diff --git a/Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt b/Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt deleted file mode 100644 index f1de3247c1b7..000000000000 --- a/Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt +++ /dev/null @@ -1,49 +0,0 @@ -* CoreSight CPU Debug Component: - -CoreSight CPU debug component are compliant with the ARMv8 architecture -reference manual (ARM DDI 0487A.k) Chapter 'Part H: External debug'. The -external debug module is mainly used for two modes: self-hosted debug and -external debug, and it can be accessed from mmio region from Coresight -and eventually the debug module connects with CPU for debugging. And the -debug module provides sample-based profiling extension, which can be used -to sample CPU program counter, secure state and exception level, etc; -usually every CPU has one dedicated debug module to be connected. - -Required properties: - -- compatible : should be "arm,coresight-cpu-debug"; supplemented with - "arm,primecell" since this driver is using the AMBA bus - interface. - -- reg : physical base address and length of the register set. - -- clocks : the clock associated to this component. - -- clock-names : the name of the clock referenced by the code. Since we are - using the AMBA framework, the name of the clock providing - the interconnect should be "apb_pclk" and the clock is - mandatory. The interface between the debug logic and the - processor core is clocked by the internal CPU clock, so it - is enabled with CPU clock by default. - -- cpu : the CPU phandle the debug module is affined to. Do not assume it - to default to CPU0 if omitted. - -Optional properties: - -- power-domains: a phandle to the debug power domain. We use "power-domains" - binding to turn on the debug logic if it has own dedicated - power domain and if necessary to use "cpuidle.off=1" or - "nohlt" in the kernel command line or sysfs node to - constrain idle states to ensure registers in the CPU power - domain are accessible. - -Example: - - debug@f6590000 { - compatible = "arm,coresight-cpu-debug","arm,primecell"; - reg = <0 0xf6590000 0 0x1000>; - clocks = <&sys_ctrl HI6220_DAPB_CLK>; - clock-names = "apb_pclk"; - cpu = <&cpu0>; - }; diff --git a/MAINTAINERS b/MAINTAINERS index ac2e7163ab14..59042ecb3cbc 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1971,7 +1971,6 @@ L: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx (moderated for non-subscribers) S: Maintained T: git git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git F: Documentation/ABI/testing/sysfs-bus-coresight-devices-* -F: Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt F: Documentation/devicetree/bindings/arm/arm,coresight-*.yaml F: Documentation/devicetree/bindings/arm/arm,embedded-trace-extension.yaml F: Documentation/devicetree/bindings/arm/arm,trace-buffer-extension.yaml -- 2.34.1
