From: Han Xu <han.xu@nxp.com>
Date: Tue, 6 Dec 2022 22:54:10 +0000 (-0600)
Subject: spi: spi-fsl-lpspi: add num-cs binding for lpspi
X-Git-Tag: v6.6.17~5835^2~4
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bc9ab1b7a6c687370b5d4edf34064bf04af8d369;p=platform%2Fkernel%2Flinux-rpi.git

spi: spi-fsl-lpspi: add num-cs binding for lpspi

Add num-cs property to support multiple cs for lpspi. This property is
optional.

Signed-off-by: Han Xu <han.xu@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221206225410.604482-2-han.xu@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
index 8b44284..94caa2b 100644
--- a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
@@ -56,6 +56,13 @@ properties:
       this property to re-config the chipselect value in the LPSPI driver.
     type: boolean
 
+  num-cs:
+    description:
+      number of chip selects.
+    minimum: 1
+    maximum: 2
+    default: 1
+
 required:
   - compatible
   - reg
@@ -80,4 +87,5 @@ examples:
         clock-names = "per", "ipg";
         spi-slave;
         fsl,spi-only-use-cs1-sel;
+        num-cs = <2>;
     };