On Mon, Feb 03, 2020 at 09:29:30PM -0800, Florian Fainelli wrote:
>
>
> On 2/3/2020 12:34 AM, Maxime Ripard wrote:
> > On Sun, Feb 02, 2020 at 01:18:26PM -0800, Florian Fainelli wrote:
> >> diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml
> >> index c23c24ff7575..6f56a623c1cd 100644
> >> --- a/Documentation/devicetree/bindings/arm/cpus.yaml
> >> +++ b/Documentation/devicetree/bindings/arm/cpus.yaml
> >> @@ -272,6 +272,22 @@ properties:
> >> While optional, it is the preferred way to get access to
> >> the cpu-core power-domains.
> >>
> >> + secondary-boot-reg:
> >> + $ref: '/schemas/types.yaml#/definitions/uint32'
> >> + description: |
> >> + Required for systems that have an "enable-method" property value of
> >> + "brcm,bcm11351-cpu-method", "brcm,bcm23550" or "brcm,bcm-nsp-smp".
> >> +
> >> + This includes the following SoCs: |
> >> + BCM11130, BCM11140, BCM11351, BCM28145, BCM28155, BCM21664, BCM23550
> >> + BCM58522, BCM58525, BCM58535, BCM58622, BCM58623, BCM58625, BCM88312
> >> +
> >> + The secondary-boot-reg property is a u32 value that specifies the
> >> + physical address of the register used to request the ROM holding pen
> >> + code release a secondary CPU. The value written to the register is
> >> + formed by encoding the target CPU id into the low bits of the
> >> + physical start address it should jump to.
> >> +
> >
> > You can make the requirement explicit (and enforced by the schemas) using:
> >
> > if:
> > properties:
> > enable-method:
> > contains:
> > enum:
> > - brcm,bcm11351-cpu-method
> > - brcm,bcm23550
> > - brcm,bcm-nsp-smp
> >
> > then:
> > required:
> > - secondary-boot-reg
>
> Thanks! That was exactly what I was looking for, it seems to be matching
> a bit too greedily though:
>
> DTC arch/arm/boot/dts/bcm2836-rpi-2-b.dt.yaml
> CHECK arch/arm/boot/dts/bcm2836-rpi-2-b.dt.yaml
> /home/ff944844/dev/linux/arch/arm/boot/dts/bcm2836-rpi-2-b.dt.yaml:
> cpu@0: 'secondary-boot-reg' is a required property
> /home/ff944844/dev/linux/arch/arm/boot/dts/bcm2836-rpi-2-b.dt.yaml:
> cpu@1: 'secondary-boot-reg' is a required property
> /home/ff944844/dev/linux/arch/arm/boot/dts/bcm2836-rpi-2-b.dt.yaml:
> cpu@2: 'secondary-boot-reg' is a required property
> /home/ff944844/dev/linux/arch/arm/boot/dts/bcm2836-rpi-2-b.dt.yaml:
> cpu@3: 'secondary-boot-reg' is a required property
> DTC arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dt.yaml
>
> not sure why though as your example appears correct.
Yeah, sorry, that's on me :)
The nodes that are generating this error are the cpu@[0-3] ones, and
they don't have the enable-method property at all.
This is because if needs a schema, and will only try to validate the
schema under then if the one under if is valid.
The one under if contains a list of values for enable-method, but in
the case where enable-method is absent, the schema will be valid, and
thus the schema under then will be applied.
What we actually want to express is "if there's an enable-method
property, and that property contains those three values, then you need
to have a secondary-boot-reg property."
So you need:
if:
# If the enable-method property contains one of those values
properties:
enable-method:
contains:
enum:
- brcm,bcm11351-cpu-method
- brcm,bcm23550
- brcm,bcm-nsp-smp
# and if enable method is present
required:
- enable-method
# Then we need secondary-boot-reg too
then:
required:
- secondary-boot-reg
Maxime
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