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Message-ID: <20201105191745.GB1644330@bogus>
Date: Thu, 5 Nov 2020 13:17:45 -0600
From: Rob Herring <robh@...nel.org>
To: Laurentiu Tudor <laurentiu.tudor@....com>
Cc: leoyang.li@....com, corbet@....net,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
linux-doc@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
linuxppc-dev@...ts.ozlabs.org, ioana.ciornei@....com,
Ionut-robert Aron <ionut-robert.aron@....com>
Subject: Re: [PATCH 2/2] dt-bindings: misc: convert fsl,qoriq-mc from txt to
YAML
On Thu, Nov 05, 2020 at 04:11:14PM +0200, Laurentiu Tudor wrote:
> From: Ionut-robert Aron <ionut-robert.aron@....com>
>
> Convert fsl,qoriq-mc to YAML in order to automate the verification
> process of dts files. In addition, update MAINTAINERS accordingly
> and, while at it, add some missing files.
>
> Signed-off-by: Ionut-robert Aron <ionut-robert.aron@....com>
> [laurentiu.tudor@....com: update MINTAINERS, updates & fixes in schema]
> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@....com>
> ---
> .../devicetree/bindings/misc/fsl,qoriq-mc.txt | 196 ----------------
> .../bindings/misc/fsl,qoriq-mc.yaml | 218 ++++++++++++++++++
> .../ethernet/freescale/dpaa2/overview.rst | 5 +-
> MAINTAINERS | 4 +-
> 4 files changed, 225 insertions(+), 198 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
> create mode 100644 Documentation/devicetree/bindings/misc/fsl,qoriq-mc.yaml
[...]
> diff --git a/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.yaml b/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.yaml
> new file mode 100644
> index 000000000000..9e89fd8eb635
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.yaml
> @@ -0,0 +1,218 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright 2020 NXP
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/misc/fsl,qoriq-mc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +maintainers:
> + - Laurentiu Tudor <laurentiu.tudor@....com>
> +
> +title: Freescale Management Complex
> +
> +description: |
> + The Freescale Management Complex (fsl-mc) is a hardware resource
> + manager that manages specialized hardware objects used in
> + network-oriented packet processing applications. After the fsl-mc
> + block is enabled, pools of hardware resources are available, such as
> + queues, buffer pools, I/O interfaces. These resources are building
> + blocks that can be used to create functional hardware objects/devices
> + such as network interfaces, crypto accelerator instances, L2 switches,
> + etc.
> +
> + For an overview of the DPAA2 architecture and fsl-mc bus see:
> + Documentation/networking/device_drivers/freescale/dpaa2/overview.rst
> +
> + As described in the above overview, all DPAA2 objects in a DPRC share the
> + same hardware "isolation context" and a 10-bit value called an ICID
> + (isolation context id) is expressed by the hardware to identify
> + the requester.
> +
> + The generic 'iommus' property is insufficient to describe the relationship
> + between ICIDs and IOMMUs, so an iommu-map property is used to define
> + the set of possible ICIDs under a root DPRC and how they map to
> + an IOMMU.
> +
> + For generic IOMMU bindings, see:
> + Documentation/devicetree/bindings/iommu/iommu.txt.
> +
> + For arm-smmu binding, see:
> + Documentation/devicetree/bindings/iommu/arm,smmu.yaml.
> +
> + MC firmware binary images can be found here:
> + https://github.com/NXP/qoriq-mc-binary
> +
> +properties:
> + compatible:
> + const: "fsl,qoriq-mc"
Don't need quotes.
> + description: "Must be 'fsl,qoriq-mc'. A Freescale Management Complex
Drop ^^^^^^^^^^^^^^^^^^^^^^^^
The schema says that.
> + compatible with this binding must have Block Revision
> + Registers BRR1 and BRR2 at offset 0x0BF8 and 0x0BFC in
> + the MC control register region."
> +
> + reg:
> + description: "A standard property. Specifies one or two regions defining
Don't need quotes. You need '|' for a literal block to keep formatting.
But all this should be expressed as schema...
> + the MC's registers:
> +
> + - the first region is the command portal for the this machine
> + and must always be present
> +
> + - the second region is the MC control registers. This region
> + may not be present in some scenarios, such as in the device
> + tree presented to a virtual machine."
reg:
minItems: 1
items:
- description: the command portal for the this machine
- description: MC control registers. This region may not be present
in some scenarios, such as in the device tree presented to a
virtual machine.
> +
> + ranges:
> + description: "A standard property. Defines the mapping between the child
> + MC address space and the parent system address space.
> +
> + The MC address space is defined by 3 components:
> + <region type> <offset hi> <offset lo>
> +
> + Valid values for region type are:
> + 0x0 - MC portals
> + 0x1 - QBMAN portals"
> +
> + '#address-cells':
> + const: 3
> +
> + '#size-cells':
> + const: 1
> +
> + dpmacs:
> + type: object
> + description: "The fsl-mc node may optionally have dpmac sub-nodes that
> + describe the relationship between the Ethernet MACs which belong
> + to the MC and the Ethernet PHYs on the system board.
> +
> + The dpmac nodes must be under a node named 'dpmacs' which
> + contains the following properties:
> +
> + - '#address-cells'
> + const: 1
> + description: Must be present if dpmac sub-nodes are defined
> + and must have a value of 1.
> +
> + - '#size-cells'
> + const: 0
> + description: Must be present if dpmac sub-nodes are defined
> + and must have a value of 0."
Drop whatever description can be expressed in schemas.
> +
> + properties:
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
> +
> + patternProperties:
> + "^dpmac@[0-9a-f]+$":
> + type: object
> +
> + description: "dpmac sub-node that describes the relationship between the
> + Ethernet MACs which belong to the MC and the Ethernet PHYs
> + on the system board."
> +
> + properties:
> + compatible:
> + const: "fsl,qoriq-mc-dpmac"
> +
> + reg:
> + description: Specifies the id of the dpmac
Constraints on the value?
> +
> + phy-handle:
> + $ref: /schemas/types.yaml#definitions/phandle
> + description: "Specifies the phandle to the PHY device node
> + associated with the this dpmac."
> +
> + required:
> + - compatible
> + - reg
> + - phy-handle
> +
> + iommu-map:
> + description: |
> + Maps an ICID to an IOMMU and associated iommu-specifier data.
> +
> + The property is an arbitrary number of tuples of
> + (icid-base, iommu, iommu-base, length).
> +
> + Any ICID i in the interval [icid-base, icid-base + length) is
> + associated with the listed IOMMU, with the iommu-specifier
> + (i - icid-base + iommu-base).
> +
> + msi-map:
> + description: |
> + Maps an ICID to a GIC ITS and associated msi-specifier data.
> +
> + The property is an arbitrary number of tuples of
> + (icid-base, gic-its, msi-base, length).
> +
> + Any ICID in the interval [icid-base, icid-base + length) is
> + associated with the listed GIC ITS, with the msi-specifier
> + (i - icid-base + msi-base).
> +
> + msi-parent:
> + deprecated: true
> + description: "Points to the MSI controller node handling message interrupts
> + for the MC."
> +
> +required:
> + - compatible
> + - reg
> + - iommu-map
> + - msi-map
> + - ranges
> + - '#address-cells'
> + - '#size-cells'
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + smmu: iommu@...0000 {
> + compatible = "arm,mmu-500";
> + #global-interrupts = <1>;
> + #iommu-cells = <1>;
> + reg = <0 0x5000000 0 0x800000>;
> + stream-match-mask = <0x7c00>;
> + interrupts = <0 13 4>,
> + <0 146 4>, <0 147 4>,
> + <0 148 4>, <0 149 4>,
> + <0 150 4>, <0 151 4>,
> + <0 152 4>, <0 153 4>;
> + };
> +
> + fsl_mc: fsl-mc@...000000 {
> + compatible = "fsl,qoriq-mc";
> + reg = <0x00000008 0x0c000000 0 0x40>, /* MC portal base */
> + <0x00000000 0x08340000 0 0x40000>; /* MC control reg */
> + /* define map for ICIDs 23-64 */
> + iommu-map = <23 &smmu 23 41>;
> + /* define msi map for ICIDs 23-64 */
> + msi-map = <23 &its 23 41>;
> + #address-cells = <3>;
> + #size-cells = <1>;
> +
> + /*
> + * Region type 0x0 - MC portals
> + * Region type 0x1 - QBMAN portals
> + */
> + ranges = <0x0 0x0 0x0 0x8 0x0c000000 0x4000000
> + 0x1 0x0 0x0 0x8 0x18000000 0x8000000>;
> +
> + dpmacs {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + dpmac@1 {
> + compatible = "fsl,qoriq-mc-dpmac";
> + reg = <1>;
> + phy-handle = <&mdio0_phy0>;
> + };
> + };
> + };
> + };
> diff --git a/Documentation/networking/device_drivers/ethernet/freescale/dpaa2/overview.rst b/Documentation/networking/device_drivers/ethernet/freescale/dpaa2/overview.rst
> index d638b5a8aadd..b3261c5871cc 100644
> --- a/Documentation/networking/device_drivers/ethernet/freescale/dpaa2/overview.rst
> +++ b/Documentation/networking/device_drivers/ethernet/freescale/dpaa2/overview.rst
> @@ -28,6 +28,9 @@ interfaces, an L2 switch, or accelerator instances.
> The MC provides memory-mapped I/O command interfaces (MC portals)
> which DPAA2 software drivers use to operate on DPAA2 objects.
>
> +MC firmware binary images can be found here:
> +https://github.com/NXP/qoriq-mc-binary
> +
> The diagram below shows an overview of the DPAA2 resource management
> architecture::
>
> @@ -338,7 +341,7 @@ Key functions include:
> a bind of the root DPRC to the DPRC driver
>
> The binding for the MC-bus device-tree node can be consulted at
> -*Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt*.
> +*Documentation/devicetree/bindings/misc/fsl,qoriq-mc.yaml*.
> The sysfs bind/unbind interfaces for the MC-bus can be consulted at
> *Documentation/ABI/testing/sysfs-bus-fsl-mc*.
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index b43b59542d15..400a17c90edb 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -14409,9 +14409,11 @@ M: Stuart Yoder <stuyoder@...il.com>
> M: Laurentiu Tudor <laurentiu.tudor@....com>
> L: linux-kernel@...r.kernel.org
> S: Maintained
> -F: Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
> +F: Documentation/devicetree/bindings/misc/fsl,dpaa2-console.yaml
> +F: Documentation/devicetree/bindings/misc/fsl,qoriq-mc.yaml
> F: Documentation/networking/device_drivers/ethernet/freescale/dpaa2/overview.rst
> F: drivers/bus/fsl-mc/
> +F: include/linux/fsl/mc.h
>
> QT1010 MEDIA DRIVER
> M: Antti Palosaari <crope@....fi>
> --
> 2.17.1
>
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