spi: dt-bindings: cdns,qspi-nor: Move peripheral-specific properties out

The spi-peripheral-props.yaml schema contains peripheral-specific
properties for SPI controllers that should be present in the peripheral
node. Move peripheral-specific properties to a separate file and refer
to it in spi-peripheral-props.yaml.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211109181911.2251-3-p.yadav@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/spi/cdns,qspi-nor-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/cdns,qspi-nor-peripheral-props.yaml
new file mode 100644
index 000000000000..553601a441a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/cdns,qspi-nor-peripheral-props.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/cdns,qspi-nor-peripheral-props.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Peripheral-specific properties for the Cadence QSPI controller.
+
+description:
+  See spi-peripheral-props.yaml for more info.
+
+maintainers:
+  - Pratyush Yadav <p.yadav@ti.com>
+
+properties:
+  # cdns,qspi-nor.yaml
+  cdns,read-delay:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Delay for read capture logic, in clock cycles.
+
+  cdns,tshsl-ns:
+    description:
+      Delay in nanoseconds for the length that the master mode chip select
+      outputs are de-asserted between transactions.
+
+  cdns,tsd2d-ns:
+    description:
+      Delay in nanoseconds between one chip select being de-activated
+      and the activation of another.
+
+  cdns,tchsh-ns:
+    description:
+      Delay in nanoseconds between last bit of current transaction and
+      deasserting the device chip select (qspi_n_ss_out).
+
+  cdns,tslch-ns:
+    description:
+      Delay in nanoseconds between setting qspi_n_ss_out low and
+      first bit transfer.
+
+additionalProperties: true