[PATCH v2 09/14] dt-bindings: pinctrl: realtek: Rename 'realtek,duty-cycle' to 'realtek,pulse-width-adjust'

[Yu-Chun Lin]

From: Tzuyi Chang <tychang at realtek.com>

Rename 'realtek,duty-cycle' to 'realtek,pulse-width-adjust'.

The previous name was misleading because this hardware block is not a PWM
generator. It does not generate a signal with a specific frequency and
duty ratio.

Instead, it provides a fixed nanosecond-level adjustment to the rising/
falling edges of an existing signal.

Signed-off-by: Tzuyi Chang <tychang at realtek.com>
Co-developed-by: Yu-Chun Lin <eleanor.lin at realtek.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin at realtek.com>
---
 .../bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml       | 9 ++++++---
 .../bindings/pinctrl/realtek,rtd1319d-pinctrl.yaml       | 9 ++++++---
 .../bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml       | 9 ++++++---
 3 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml
index 90bd49d87d2e..7b3888b2cea8 100644
--- a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml
@@ -133,10 +133,13 @@ patternProperties:
         minimum: 0
         maximum: 7
 
-      realtek,duty-cycle:
+      realtek,pulse-width-adjust:
         description: |
-          An integer describing the level to adjust output duty cycle, controlling
-          the proportion of positive and negative waveforms in nanoseconds.
+          An integer describing the level to adjust the output pulse width, it
+          provides a fixed nanosecond-level adjustment to the rising/falling
+          edges of an existing signal. It is used for Signal Integrity tuning
+          (adding/subtracting delay to fine-tune the high/low duration), rather
+          than generating a specific PWM frequency.
           Valid arguments are described as below:
           0: 0ns
           2: + 0.25ns
diff --git a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1319d-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1319d-pinctrl.yaml
index b6211c8544ca..3b9e50ebd49b 100644
--- a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1319d-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1319d-pinctrl.yaml
@@ -132,10 +132,13 @@ patternProperties:
         minimum: 0
         maximum: 7
 
-      realtek,duty-cycle:
+      realtek,pulse-width-adjust:
         description: |
-          An integer describing the level to adjust output duty cycle, controlling
-          the proportion of positive and negative waveforms in nanoseconds.
+          An integer describing the level to adjust the output pulse width, it
+          provides a fixed nanosecond-level adjustment to the rising/falling
+          edges of an existing signal. It is used for Signal Integrity tuning
+          (adding/subtracting delay to fine-tune the high/low duration), rather
+          than generating a specific PWM frequency.
           Valid arguments are described as below:
           0: 0ns
           2: + 0.25ns
diff --git a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml
index e88bc649cc73..6246f1693a64 100644
--- a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml
@@ -131,10 +131,13 @@ patternProperties:
         minimum: 0
         maximum: 7
 
-      realtek,duty-cycle:
+      realtek,pulse-width-adjust:
         description: |
-          An integer describing the level to adjust output duty cycle, controlling
-          the proportion of positive and negative waveforms in nanoseconds.
+          An integer describing the level to adjust the output pulse width, it
+          provides a fixed nanosecond-level adjustment to the rising/falling
+          edges of an existing signal. It is used for Signal Integrity tuning
+          (adding/subtracting delay to fine-tune the high/low duration), rather
+          than generating a specific PWM frequency.
           Valid arguments are described as below:
           0: 0ns
           2: + 0.25ns
-- 
2.34.1