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[1/3] dt-bindings: timer: sifive,clint: add legacy riscv compatible

Message ID 20220805162844.1554247-2-mail@conchuod.ie
State New
Headers show
Series Fix dt-validate issues on qemu dtbdumps due to dt-bindings | expand

Commit Message

Conor Dooley Aug. 5, 2022, 4:28 p.m. UTC
From: Conor Dooley <conor.dooley@microchip.com>

While "real" hardware might not use the compatible string "riscv,clint0"
it is present in the driver & QEMU uses it for automatically generated
virt machine dtbs. To avoid dt-validate problems with QEMU produced
dtbs, such as the following, add it to the binding.

riscv-virt.dtb: clint@2000000: compatible:0: 'sifive,clint0' is not one of ['sifive,fu540-c000-clint', 'starfive,jh7100-clint', 'canaan,k210-clint']

Reported-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/linux-riscv/20220803170552.GA2250266-robh@kernel.org/
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
---
 .../bindings/timer/sifive,clint.yaml           | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

Comments

Conor Dooley Aug. 9, 2022, 5:30 p.m. UTC | #1
On 09/08/2022 15:16, Rob Herring wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On Fri, Aug 05, 2022 at 05:28:43PM +0100, Conor Dooley wrote:
>> From: Conor Dooley <conor.dooley@microchip.com>
>>
>> While "real" hardware might not use the compatible string "riscv,clint0"
>> it is present in the driver & QEMU uses it for automatically generated
>> virt machine dtbs. To avoid dt-validate problems with QEMU produced
>> dtbs, such as the following, add it to the binding.
>>
>> riscv-virt.dtb: clint@2000000: compatible:0: 'sifive,clint0' is not one of ['sifive,fu540-c000-clint', 'starfive,jh7100-clint', 'canaan,k210-clint']
>>
>> Reported-by: Rob Herring <robh@kernel.org>
>> Link: https://lore.kernel.org/linux-riscv/20220803170552.GA2250266-robh@kernel.org/
>> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
>> ---
>>  .../bindings/timer/sifive,clint.yaml           | 18 ++++++++++++------
>>  1 file changed, 12 insertions(+), 6 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
>> index e64f46339079..9fcf20942582 100644
>> --- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
>> +++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
>> @@ -22,12 +22,18 @@ description:
>>
>>  properties:
>>    compatible:
>> -    items:
>> -      - enum:
>> -          - sifive,fu540-c000-clint
>> -          - starfive,jh7100-clint
>> -          - canaan,k210-clint
>> -      - const: sifive,clint0
>> +    oneOf:
>> +      - items:
>> +          - enum:
>> +              - sifive,fu540-c000-clint
>> +              - starfive,jh7100-clint
>> +              - canaan,k210-clint
>> +          - const: sifive,clint0
>> +      - items:
>> +          - const: sifive,clint0
>> +          - const: riscv,clint0
>> +        deprecated: true
>> +        description: For legacy systems & the qemu virt machine only
> 
> I would drop 'legacy systems'.

I took this from a comment in the driver against "riscv,plic0". Thought
it applied to both plic and clint bindings so put it in here. Happy to
drop them for v2 :)

Thanks,
Conor.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
index e64f46339079..9fcf20942582 100644
--- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
+++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
@@ -22,12 +22,18 @@  description:
 
 properties:
   compatible:
-    items:
-      - enum:
-          - sifive,fu540-c000-clint
-          - starfive,jh7100-clint
-          - canaan,k210-clint
-      - const: sifive,clint0
+    oneOf:
+      - items:
+          - enum:
+              - sifive,fu540-c000-clint
+              - starfive,jh7100-clint
+              - canaan,k210-clint
+          - const: sifive,clint0
+      - items:
+          - const: sifive,clint0
+          - const: riscv,clint0
+        deprecated: true
+        description: For legacy systems & the qemu virt machine only
 
     description:
       Should be "<vendor>,<chip>-clint" and "sifive,clint<version>".