linux-kernel - [PATCH v4 1/4] spi: dt-bindings: amlogic, meson-gx-spicc: Add pinctrl names for SPI signal states

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Date:   Fri, 21 Oct 2022 15:31:25 +0200
From:   Amjad Ouled-Ameur <aouledameur@...libre.com>
To:     Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Mark Brown <broonie@...nel.org>
Cc:     linux-amlogic@...ts.infradead.org,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Amjad Ouled-Ameur <aouledameur@...libre.com>,
        Da Xue <da@...re.computer>, linux-spi@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v4 1/4] 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       | 75 ++++++++++++++--------
 1 file changed, 47 insertions(+), 28 deletions(-)

diff --git a/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml b/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
index 0c10f7678178..53eb6562b979 100644
--- a/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
+++ b/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
@@ -10,9 +10,6 @@ title: Amlogic Meson SPI Communication Controller
 maintainers:
   - Neil Armstrong <neil.armstrong@...aro.org>
 
-allOf:
-  - $ref: "spi-controller.yaml#"
-
 description: |
   The Meson SPICC is a generic SPI controller for general purpose Full-Duplex
   communications with dedicated 16 words RX/TX PIO FIFOs.
@@ -43,31 +40,53 @@ properties:
     minItems: 1
     maxItems: 2
 
-if:
-  properties:
-    compatible:
-      contains:
-        enum:
-          - amlogic,meson-g12a-spicc
-
-then:
-  properties:
-    clocks:
-      minItems: 2
-
-    clock-names:
-      items:
-        - const: core
-        - const: pclk
-
-else:
-  properties:
-    clocks:
-      maxItems: 1
-
-    clock-names:
-      items:
-        - const: core
+allOf:
+  - $ref: "spi-controller.yaml#"
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,meson-g12a-spicc
+
+    then:
+      properties:
+        clocks:
+          minItems: 2
+
+        clock-names:
+          items:
+            - const: core
+            - const: pclk
+
+    else:
+      properties:
+        clocks:
+          maxItems: 1
+
+        clock-names:
+          items:
+            - const: core
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,meson-gx-spicc
+
+    then:
+      properties:
+        pinctrl-0: true
+        pinctrl-1: true
+        pinctrl-2: true
+
+        pinctrl-names:
+          minItems: 1
+          items:
+            - const: default
+            - const: idle-high
+            - const: idle-low
 
 required:
   - compatible

-- 
b4 0.10.1