diff mbox series

[RESEND,v2,1/3] dt-bindings: dmaengine: Add dma-channel-mask to Tegra GPCDMA

Message ID 20221018162812.69673-2-akhilrajeev@nvidia.com
State New
Headers
Series Tegra GCPDMA: Add dma-channel-mask support |

Commit Message

Akhil R Oct. 18, 2022, 4:28 p.m. UTC 
  Add dma-channel-mask property in Tegra GPCDMA document.

The property would help to specify the channels to be used in
kernel and reserve few for the firmware. This was previously
achieved by limiting the channel number to 31 in the driver.
Now since we can list all 32 channels, update the interrupts
property as well to list all 32 interrupts.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
---
 .../devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml   | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Comments

Vinod Koul Oct. 19, 2022, 1:33 p.m. UTC | #1 
On 18-10-22, 21:58, Akhil R wrote:
> Add dma-channel-mask property in Tegra GPCDMA document.
> 
> The property would help to specify the channels to be used in
> kernel and reserve few for the firmware. This was previously
> achieved by limiting the channel number to 31 in the driver.
> Now since we can list all 32 channels, update the interrupts
> property as well to list all 32 interrupts.

Pls cc dt folks and ML on DT patches!

> 
> Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
> Acked-by: Thierry Reding <treding@nvidia.com>
> ---
>  .../devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml   | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
> index c8894476b6ab..851bd50ee67f 100644
> --- a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
> +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
> @@ -39,7 +39,7 @@ properties:
>        Should contain all of the per-channel DMA interrupts in
>        ascending order with respect to the DMA channel index.
>      minItems: 1
> -    maxItems: 31
> +    maxItems: 32
>  
>    resets:
>      maxItems: 1
> @@ -52,6 +52,9 @@ properties:
>  
>    dma-coherent: true
>  
> +  dma-channel-mask:
> +    maxItems: 1
> +
>  required:
>    - compatible
>    - reg
> @@ -60,6 +63,7 @@ required:
>    - reset-names
>    - "#dma-cells"
>    - iommus
> +  - dma-channel-mask
>  
>  additionalProperties: false
>  
> @@ -108,5 +112,6 @@ examples:
>          #dma-cells = <1>;
>          iommus = <&smmu TEGRA186_SID_GPCDMA_0>;
>          dma-coherent;
> +        dma-channel-mask = <0xfffffffe>;
>      };
>  ...
> -- 
> 2.17.1
Akhil R Oct. 20, 2022, 8:35 a.m. UTC | #2 
> On 18-10-22, 21:58, Akhil R wrote:
> > Add dma-channel-mask property in Tegra GPCDMA document.
> >
> > The property would help to specify the channels to be used in kernel
> > and reserve few for the firmware. This was previously achieved by
> > limiting the channel number to 31 in the driver.
> > Now since we can list all 32 channels, update the interrupts property
> > as well to list all 32 interrupts.
> 
> Pls cc dt folks and ML on DT patches!
> 
Thanks for pointing. Resent the series with DT folks included.

Best Regards,
Akhil
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
index c8894476b6ab..851bd50ee67f 100644
--- a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
+++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
@@ -39,7 +39,7 @@  properties:
       Should contain all of the per-channel DMA interrupts in
       ascending order with respect to the DMA channel index.
     minItems: 1
-    maxItems: 31
+    maxItems: 32
 
   resets:
     maxItems: 1
@@ -52,6 +52,9 @@  properties:
 
   dma-coherent: true
 
+  dma-channel-mask:
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -60,6 +63,7 @@  required:
   - reset-names
   - "#dma-cells"
   - iommus
+  - dma-channel-mask
 
 additionalProperties: false
 
@@ -108,5 +112,6 @@  examples:
         #dma-cells = <1>;
         iommus = <&smmu TEGRA186_SID_GPCDMA_0>;
         dma-coherent;
+        dma-channel-mask = <0xfffffffe>;
     };
 ...