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[v2,1/2] spi: dt-bindings: amlogic, meson-gx-spicc: Add pinctrl names for SPI signal states

Message ID 20221004-up-aml-fix-spi-v2-1-3e8ae91a1925@baylibre.com
State New
Headers show
Series spi: amlogic: meson-spicc: Use pinctrl to drive CLK line when idle | expand

Commit Message

Amjad Ouled-Ameur Oct. 4, 2022, 11:10 a.m. UTC 
SPI pins of the SPICC Controller in Meson-GX needs to be controlled by
pin biais when idle. Therefore define three pinctrl names:
- default: SPI pins are controlled by spi function.
- idle-high: SCLK pin is pulled-up, but MOSI/MISO are still controlled
by spi function.
- idle-low: SCLK pin is pulled-down, but MOSI/MISO are still controlled
by spi function.

Reported-by: Da Xue <da@libre.computer>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
---
 .../devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml   | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml b/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
index 0c10f7678178..53013e27f507 100644
--- a/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
+++ b/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
@@ -43,6 +43,14 @@  properties:
     minItems: 1
     maxItems: 2
 
+  pinctrl-0:
+    minItems: 1
+
+  pinctrl-1:
+    maxItems: 1
+
+  pinctrl-names: true
+
 if:
   properties:
     compatible:
@@ -69,6 +77,13 @@  else:
       items:
         - const: core
 
+    pinctrl-names:
+      minItems: 1
+      items:
+        - const: default
+        - const: idle-high
+        - const: idle-low
+
 required:
   - compatible
   - reg