| Message ID | 20230313225103.30512-12-Sergey.Semin@baikalelectronics.ru (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | dt-bindings: net: dwmac: Extend clocks, props desc and constraints | expand |
On 13/03/2023 23:50, Serge Semin wrote: > Currently none of the MTL Rx Queues QoS-related DT-properties have been > equipped with the proper constraints. Meanwhile they can be specified at > least based on the corresponding CSR field sizes or the DW (x|xG)MAC > IP-core synthesize parameter constraints. Let's do that: > + snps,rx-queues-to-use - number of Rx queues to utilise is limited w (...) > + > snps,route-avcp: > type: boolean > description: AV Untagged Control packets > @@ -166,6 +173,9 @@ properties: > snps,priority: > $ref: /schemas/types.yaml#/definitions/uint32 > description: Bitmask of the tagged frames priorities assigned to the queue > + minimum: 0 > + maximum: 0xFF > + lowercase hex Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml index f24718a8d184..e5662b1498b7 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -115,6 +115,10 @@ properties: snps,rx-queues-to-use: $ref: /schemas/types.yaml#/definitions/uint32 description: number of RX queues to be used in the driver + default: 1 + minimum: 1 + maximum: 12 + snps,rx-sched-sp: type: boolean description: Strict priority @@ -135,7 +139,7 @@ properties: properties: snps,rx-sched-sp: false patternProperties: - "^queue[0-9]$": + "^queue([0-9]|1[0-1])$": description: Each subnode represents a queue. type: object properties: @@ -148,6 +152,9 @@ properties: snps,map-to-dma-channel: $ref: /schemas/types.yaml#/definitions/uint32 description: DMA channel id to map + minimum: 0 + maximum: 15 + snps,route-avcp: type: boolean description: AV Untagged Control packets @@ -166,6 +173,9 @@ properties: snps,priority: $ref: /schemas/types.yaml#/definitions/uint32 description: Bitmask of the tagged frames priorities assigned to the queue + minimum: 0 + maximum: 0xFF + allOf: - if: required:
Currently none of the MTL Rx Queues QoS-related DT-properties have been equipped with the proper constraints. Meanwhile they can be specified at least based on the corresponding CSR field sizes or the DW (x|xG)MAC IP-core synthesize parameter constraints. Let's do that: + snps,rx-queues-to-use - number of Rx queues to utilise is limited with a number of available queues. DW MAC/GMAC: no queues, DW Eth QoS: <= 8, DW xGMAC: <= 12. + snps,map-to-dma-channel - DMA channel ID is limited with a number of available DMA-channels. DW MAC/GMAC: <= 3, DW Eth QoS: <= 8, DW xGMAC: <= 16. + snps,priority - bitfield of the USP (user Priority) values of the tagged packets is limited with the corresponding CSR field width or a maximum possible VLAN tag PRI field value (it's 7). DW MAC/GMAC: no queues, DW Eth QoS: 0xff, DW xGMAC: 0xff. Since the constraints vary for different IP-cores and the DT-schema is common for all of them the least restrictive values are chosen. The info above can be used for the IP-core specific DT-schemas if anybody ever is bothered with one to create. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> --- .../devicetree/bindings/net/snps,dwmac.yaml | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)