diff mbox series

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

Message ID 20221004-up-aml-fix-spi-v4-1-0342d8e10c49@baylibre.com (mailing list archive)
State New, archived
Headers show
Series spi: amlogic: meson-spicc: Use pinctrl to drive CLK line when idle | expand

Commit Message

Amjad Ouled-Ameur Oct. 21, 2022, 1:31 p.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>
---
 .../bindings/spi/amlogic,meson-gx-spicc.yaml       | 75 ++++++++++++++--------
 1 file changed, 47 insertions(+), 28 deletions(-)

Comments

Krzysztof Kozlowski Oct. 21, 2022, 1:55 p.m. UTC | #1 
On 21/10/2022 09:31, Amjad Ouled-Ameur wrote:
> 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>


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof
Martin Blumenstingl Oct. 22, 2022, 10:13 a.m. UTC | #2 
On Fri, Oct 21, 2022 at 3:31 PM Amjad Ouled-Ameur
<aouledameur@baylibre.com> wrote:
>
> SPI pins of the SPICC Controller in Meson-GX needs to be controlled by
> pin biais when idle. Therefore define three pinctrl names:
s/biais/bias/
> - 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>
Other than the typo:
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>


Best regards,
Martin
diff mbox series

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..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@linaro.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