dt-bindings: spi: spi-rockchip: Add description for csm property

Change-Id: Ic429540db16a4085149c9399c3daf11e31993b7a Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
2026-06-08 03:40:35 +09:00 · 2023-01-04 14:44:29 +08:00
parent c51783b5f7
commit d2f0b3cb58
1 changed files with 11 additions and 0 deletions
--- a/Documentation/devicetree/bindings/spi/spi-rockchip.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-rockchip.yaml
@@ -69,6 +69,17 @@ properties:
      (may need to be fine tuned for high capacitance lines).
      If not specified 0 will be used.

+  csm:
+    default: 0
+    description:
+      ss_n be high for half or one sclk_out cycle after every frame data
+      is transferred.
+      If not specified 0 will be used.
+    enum:
+      - 0 # keep low
+      - 1 # half sclk_out
+      - 2 # one sclk_out
+
  pinctrl-names:
    minItems: 1
    items: