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Date: Fri, 9 Jul 2021 10:27:32 -0700
From: Bjorn Andersson <bjorn.andersson@...aro.org>
To: Rob Herring <robh@...nel.org>
Cc: Andy Gross <agross@...nel.org>, Sibi S <sibis@...eaurora.org>,
linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] dt-bindings: soc: qcom: aoss: Convert to YAML
On Thu 01 Jul 12:03 PDT 2021, Rob Herring wrote:
> On Fri, Jun 25, 2021 at 04:40:17PM -0700, Bjorn Andersson wrote:
> > Convert to YAML in order to allow validation.
> >
> > Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> > ---
> >
> > I'm aware that this conflicts with Sibi's removal of '#power-domain-cells', but
> > that's a trivial change regardless of which of the two patches gets in first.
> >
> > .../bindings/soc/qcom/qcom,aoss-qmp.txt | 90 --------------
> > .../bindings/soc/qcom/qcom,aoss-qmp.yaml | 115 ++++++++++++++++++
> > 2 files changed, 115 insertions(+), 90 deletions(-)
> > delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
> > create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
> > deleted file mode 100644
> > index 3747032311a4..000000000000
> > --- a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
> > +++ /dev/null
> > @@ -1,90 +0,0 @@
> > -Qualcomm Always-On Subsystem side channel binding
> > -
> > -This binding describes the hardware component responsible for side channel
> > -requests to the always-on subsystem (AOSS), used for certain power management
> > -requests that is not handled by the standard RPMh interface. Each client in the
> > -SoC has it's own block of message RAM and IRQ for communication with the AOSS.
> > -The protocol used to communicate in the message RAM is known as Qualcomm
> > -Messaging Protocol (QMP)
> > -
> > -The AOSS side channel exposes control over a set of resources, used to control
> > -a set of debug related clocks and to affect the low power state of resources
> > -related to the secondary subsystems. These resources are exposed as a set of
> > -power-domains.
> > -
> > -- compatible:
> > - Usage: required
> > - Value type: <string>
> > - Definition: must be one of:
> > - "qcom,sc7180-aoss-qmp"
> > - "qcom,sc7280-aoss-qmp"
> > - "qcom,sc8180x-aoss-qmp"
> > - "qcom,sdm845-aoss-qmp"
> > - "qcom,sm8150-aoss-qmp"
> > - "qcom,sm8250-aoss-qmp"
> > - "qcom,sm8350-aoss-qmp"
> > - and:
> > - "qcom,aoss-qmp"
> > -
> > -- reg:
> > - Usage: required
> > - Value type: <prop-encoded-array>
> > - Definition: the base address and size of the message RAM for this
> > - client's communication with the AOSS
> > -
> > -- interrupts:
> > - Usage: required
> > - Value type: <prop-encoded-array>
> > - Definition: should specify the AOSS message IRQ for this client
> > -
> > -- mboxes:
> > - Usage: required
> > - Value type: <prop-encoded-array>
> > - Definition: reference to the mailbox representing the outgoing doorbell
> > - in APCS for this client, as described in mailbox/mailbox.txt
> > -
> > -- #clock-cells:
> > - Usage: optional
> > - Value type: <u32>
> > - Definition: must be 0
> > - The single clock represents the QDSS clock.
> > -
> > -- #power-domain-cells:
> > - Usage: optional
> > - Value type: <u32>
> > - Definition: must be 1
> > - The provided power-domains are:
> > - CDSP state (0), LPASS state (1), modem state (2), SLPI
> > - state (3), SPSS state (4) and Venus state (5).
> > -
> > -= SUBNODES
> > -The AOSS side channel also provides the controls for three cooling devices,
> > -these are expressed as subnodes of the QMP node. The name of the node is used
> > -to identify the resource and must therefor be "cx", "mx" or "ebi".
> > -
> > -- #cooling-cells:
> > - Usage: optional
> > - Value type: <u32>
> > - Definition: must be 2
> > -
> > -= EXAMPLE
> > -
> > -The following example represents the AOSS side-channel message RAM and the
> > -mechanism exposing the power-domains, as found in SDM845.
> > -
> > - aoss_qmp: qmp@...0000 {
> > - compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
> > - reg = <0x0c300000 0x100000>;
> > - interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
> > - mboxes = <&apss_shared 0>;
> > -
> > - #power-domain-cells = <1>;
> > -
> > - cx_cdev: cx {
> > - #cooling-cells = <2>;
> > - };
> > -
> > - mx_cdev: mx {
> > - #cooling-cells = <2>;
> > - };
> > - };
> > diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
> > new file mode 100644
> > index 000000000000..1b9de8e49356
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
> > @@ -0,0 +1,115 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/soc/qcom/qcom,aoss-qmp.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Qualcomm Always-On Subsystem side channel binding
> > +
> > +maintainers:
> > + - Bjorn Andersson <bjorn.andersson@...aro.org>
> > +
> > +description:
> > + This binding describes the hardware component responsible for side channel
> > + requests to the always-on subsystem (AOSS), used for certain power management
> > + requests that is not handled by the standard RPMh interface. Each client in the
> > + SoC has it's own block of message RAM and IRQ for communication with the AOSS.
> > + The protocol used to communicate in the message RAM is known as Qualcomm
> > + Messaging Protocol (QMP)
> > +
> > + The AOSS side channel exposes control over a set of resources, used to control
> > + a set of debug related clocks and to affect the low power state of resources
> > + related to the secondary subsystems. These resources are exposed as a set of
> > + power-domains.
> > +
> > +properties:
> > + compatible:
> > + items:
> > + - enum:
> > + - "qcom,sc7180-aoss-qmp"
> > + - "qcom,sc7280-aoss-qmp"
> > + - "qcom,sc8180x-aoss-qmp"
> > + - "qcom,sdm845-aoss-qmp"
> > + - "qcom,sm8150-aoss-qmp"
> > + - "qcom,sm8250-aoss-qmp"
> > + - "qcom,sm8350-aoss-qmp"
> > + - const: "qcom,aoss-qmp"
>
> Don't need quotes. With that and the indentation fixed:
>
I've installed yamllint and fixed this for v2.
But can you please help me understand why the members of the enum should
have double indentation here? Is it just that the indentation counts
from the 'e' and not the '-'?
> Reviewed-by: Rob Herring <robh@...nel.org>
Thanks,
Bjorn
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