diff mbox series

[v6,02/20] dt-bindings: fsi: fsi2spi: Document SPI controller child nodes

Message ID 20240522192524.3286237-3-eajames@linux.ibm.com
State Accepted
Commit c7bcbb8e8f50a009d2efd9dd2af325a68d63ebaa
Headers show
Series ARM: dts: aspeed: Add IBM P11 BMC systems | expand

Commit Message

Eddie James May 22, 2024, 7:25 p.m. UTC 
The FSI2SPI bridge has several SPI controllers behind it, which
should be documented. Also, therefore the node needs to specify
address and size cells.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../devicetree/bindings/fsi/ibm,fsi2spi.yaml  | 36 ++++++++++++++++---
 1 file changed, 32 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/fsi/ibm,fsi2spi.yaml b/Documentation/devicetree/bindings/fsi/ibm,fsi2spi.yaml
index e2ca0b0004714..ad5c83f484255 100644
--- a/Documentation/devicetree/bindings/fsi/ibm,fsi2spi.yaml
+++ b/Documentation/devicetree/bindings/fsi/ibm,fsi2spi.yaml
@@ -9,11 +9,10 @@  title: IBM FSI-attached SPI controllers
 maintainers:
   - Eddie James <eajames@linux.ibm.com>
 
-description: |
+description:
   This binding describes an FSI CFAM engine called the FSI2SPI. Therefore this
-  node will always be a child of an FSI CFAM node; see fsi.txt for details on
-  FSI slave and CFAM nodes. This FSI2SPI engine provides access to a number of
-  SPI controllers.
+  node will always be a child of an FSI CFAM node. This FSI2SPI engine provides
+  access to a number of SPI controllers.
 
 properties:
   compatible:
@@ -24,6 +23,17 @@  properties:
     items:
       - description: FSI slave address
 
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^spi@[0-9a-f]+$":
+    type: object
+    $ref: /schemas/spi/ibm,spi-fsi.yaml
+
 required:
   - compatible
   - reg
@@ -35,4 +45,22 @@  examples:
     fsi2spi@1c00 {
         compatible = "ibm,fsi2spi";
         reg = <0x1c00 0x400>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        spi@0 {
+            compatible = "ibm,spi-fsi";
+            reg = <0>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            eeprom@0 {
+                compatible = "atmel,at25";
+                reg = <0>;
+                address-width = <24>;
+                pagesize = <256>;
+                size = <0x80000>;
+                spi-max-frequency = <1000000>;
+            };
+        };
     };