On Tue, Oct 01, 2019 at 09:00:03AM -0500, Rob Herring wrote: > On Wed, Sep 18, 2019 at 07:31:35PM +0200, Krzysztof Kozlowski wrote: > > Convert generic mmio-sram bindings to DT schema format using > > json-schema. > > I've been slow getting to this because I started on the same thing... > > > > > Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> > > > > --- > > > > Changes since v1: > > 1. Indent example with four spaces (more readable). > > --- > > .../devicetree/bindings/sram/sram.txt | 80 ---------- > > .../devicetree/bindings/sram/sram.yaml | 138 ++++++++++++++++++ > > 2 files changed, 138 insertions(+), 80 deletions(-) > > delete mode 100644 Documentation/devicetree/bindings/sram/sram.txt > > create mode 100644 Documentation/devicetree/bindings/sram/sram.yaml > > > diff --git a/Documentation/devicetree/bindings/sram/sram.yaml b/Documentation/devicetree/bindings/sram/sram.yaml > > new file mode 100644 > > index 000000000000..8d9d6ce494b2 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/sram/sram.yaml > > @@ -0,0 +1,138 @@ > > +# SPDX-License-Identifier: GPL-2.0 > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/sram/sram.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Generic on-chip SRAM > > + > > +maintainers: > > + - FIXME <who@xxxxxxxxxxxx> > > You can put me. Sure. > > > + > > +description: |+ > > + Simple IO memory regions to be managed by the genalloc API. > > + > > + Each child of the sram node specifies a region of reserved memory. Each > > + child node should use a 'reg' property to specify a specific range of > > + reserved memory. > > + > > + Following the generic-names recommended practice, node names should > > + reflect the purpose of the node. Unit address (@<address>) should be > > + appended to the name. > > + > > +properties: > > + $nodename: > > + pattern: "^sram(@.*)?" > > + > > + compatible: > > + items: > > + - enum: > > + - mmio-sram > > + - atmel,sama5d2-securam > > I was trying to go down the path of putting all the compatibles for > various SRAM bindings here, but I ran into some issues. I need to > revisit as I've forgotten the exact issue. > > This would need to be a 'contains' if this is going to work for others. OK. > > > + > > + reg: > > + maxItems: 1 > > + > > + "#address-cells": > > + description: Should use the same values as the root node. > > + > > + "#size-cells": > > + description: Should use the same values as the root node. > > I defined both of these to be 1 as 4GB of SRAM should be enough for a > while. We can debate 1 or 2 cells vs. 1, but there's no reason it has to > be the same as the root (unless we're failing to do address > translation). That was copied from txt version. I can adjust them to 1 although this is will more than simple conversion. > > > + > > + ranges: > > + description: > > + Should translate from local addresses within the sram to bus addresses. > > + > > + no-memory-wc: > > + description: > > + The flag indicating, that SRAM memory region has not to be remapped > > + as write combining. WC is used by default. > > + type: boolean > > + > > + # TODO: additionalProperties: false > > + > > +patternProperties: > > + "^([a-z]*-)?sram@[a-f0-9]$": > > + type: object > > + description: > > + Each child of the sram node specifies a region of reserved memory. > > + properties: > > + reg: > > + description: > > + IO mem address range, relative to the SRAM range. > > maxItems: 1 OK > > > + > > + compatible: > > + $ref: /schemas/types.yaml#/definitions/string > > + description: > > + Should contain a vendor specific string in the form > > + <vendor>,[<device>-]<usage> > > + > > + pool: > > + description: > > + Indicates that the particular reserved SRAM area is addressable > > + and in use by another device or devices. > > + type: boolean > > + > > + export: > > + description: > > + Indicates that the reserved SRAM area may be accessed outside > > + of the kernel, e.g. by bootloader or userspace. > > + type: boolean > > + > > + protect-exec: > > + description: | > > + Same as 'pool' above but with the additional constraint that code > > + will be run from the region and that the memory is maintained as > > + read-only, executable during code execution. NOTE: This region must > > + be page aligned on start and end in order to properly allow > > + manipulation of the page attributes. > > + type: boolean > > + > > + label: > > + $ref: /schemas/types.yaml#/definitions/string > > Already has a type definition. OK Best regards, Krzysztof
