From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Most users of dw-apb-ssi use spi-{r,t}x-bus-width of 1, however the
Canaan k210 is wired up for a width of 4.
Quoting Serge:
The modern DW APB SSI controllers of v.4.* and newer also support the
enhanced SPI Modes too (Dual, Quad and Octal). Since the IP-core
version is auto-detected at run-time there is no way to create a
DT-schema correctly constraining the Rx/Tx SPI bus widths.
/endquote
As such, drop the restriction on only supporting a bus width of 1.
Link: https://lore.kernel.org/all/20220620205654.g7fyipwytbww5757@mobilestation/
Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
---
Serge, I dropped your R-b when I swapped to the default
property since it changed the enum.
---
Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml | 6 ------
1 file changed, 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
index e25d44c218f2..0a43d6e0ef91 100644
--- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
+++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
@@ -143,12 +143,6 @@ patternProperties:
minimum: 0
maximum: 3
- spi-rx-bus-width:
- const: 1
-
- spi-tx-bus-width:
- const: 1
-
unevaluatedProperties: false
required:
--
2.36.1
