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

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Date:   Tue,  9 Aug 2022 19:20:16 +0200
From:   Amjad Ouled-Ameur <aouledameur@...libre.com>
To:     broonie@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
        narmstrong@...libre.com,
        Amjad Ouled-Ameur <aouledameur@...libre.com>,
        Da Xue <da@...re.computer>
Subject: [PATCH 1/2] spi: dt-bindings: amlogic, meson-gx-spicc: Add pinctrl names for SPI signal states

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

diff --git a/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml b/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
index 50de0da42c13..10707a8216f5 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
-- 
2.37.1