[PATCH v5 01/19] dt-bindings: remoteproc: Add bindind to support autonomous processors
From: Mathieu Poirier <mathieu.poirier@linaro.org>
Date: 2021-02-11 23:48:27
Also in:
linux-devicetree, linux-remoteproc, lkml
Subsystem:
open firmware and flattened device tree bindings, remote processor (remoteproc) subsystem, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Bjorn Andersson, Mathieu Poirier, Linus Torvalds
This patch adds a binding to guide the remoteproc core on how to deal with remote processors in two cases: 1) When an application holding a reference to a remote processor character device interface crashes. 2) when the platform driver for a remote processor is removed. In both cases if "autonomous-on-core-reboot" is specified in the remote processor DT node, the remoteproc core will detach the remote processor rather than switching it off. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> --- .../bindings/remoteproc/remoteproc-core.yaml | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/remoteproc-core.yaml
diff --git a/Documentation/devicetree/bindings/remoteproc/remoteproc-core.yaml b/Documentation/devicetree/bindings/remoteproc/remoteproc-core.yaml
new file mode 100644
index 000000000000..e8bb8ef9031a
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/remoteproc-core.yaml@@ -0,0 +1,27 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/remoteproc/remoteproc-core.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Binding(s) for a primary processor applicable to all ancillary + processors + +maintainers: + - Bjorn Andersson <bjorn.andersson@linaro.org> + - Mathieu Poirier <mathieu.poirier@linaro.org> + +description: + This document defines the bindings used by a primary processor to determine + the state it should leave an ancillary processor when the former is no longer + functioning. + +properties: + autonomous-on-core-reboot: + $ref: /schemas/types.yaml#/definitions/flag + description: + When specified the ancillary processor should be left operational when + the primary processor is no longer available. Otherwise the ancillary + processor should be made inoperative. + +additionalProperties: true
--
2.25.1
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