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[v9,01/18] spi: dt-bindings: add spi-max-post-config-frequency-hz property

Message ID 20260825171737.776052-2-s-k6@ti.com
State New
Headers show
Series spi: cadence-quadspi: add PHY tuning support | expand

Commit Message

Santhosh Kumar K Aug. 25, 2026, 5:17 p.m. UTC 
Add spi-max-post-config-frequency-hz, a generic property for SPI
peripherals that operate at two distinct clock rates: a conservative
rate always reachable without controller configuration, and a higher
rate achievable only after controller-side configuration.

When both properties are present, spi-max-frequency gives the
conservative pre-configuration rate and spi-max-post-config-frequency-hz
gives the higher post-configuration target.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Santhosh Kumar K <s-k6@ti.com>
---
 .../devicetree/bindings/spi/spi-peripheral-props.yaml       | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
index 880a9f624566..84976fd3ee1b 100644
--- a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
@@ -45,6 +45,12 @@  properties:
     description:
       Maximum SPI clocking speed of the device in Hz.
 
+  spi-max-post-config-frequency-hz:
+    maxItems: 1
+    description:
+      Maximum SPI clock frequency in Hz achievable after controller-side
+      configuration.
+
   spi-cs-setup-delay-ns:
     description:
       Delay in nanoseconds to be introduced by the controller after CS is