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Message-Id: <20221208103115.25512-8-krzysztof.kozlowski@linaro.org>
Date: Thu, 8 Dec 2022 11:31:13 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Neil Armstrong <neil.armstrong@...aro.org>,
Kevin Hilman <khilman@...libre.com>,
Jerome Brunet <jbrunet@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Alain Volmat <alain.volmat@...s.st.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Joe Tessler <jrt@...gle.com>,
Yannick Fertre <yannick.fertre@...s.st.com>,
Jeff Chase <jnchase@...gle.com>, linux-media@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-tegra@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
linux-stm32@...md-mailman.stormreply.com
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Rob Herring <robh@...nel.org>
Subject: [PATCH v4 7/9] media: dt-bindings: cec-gpio: convert to DT schema
Convert HDMI CEC GPIO bindings to DT schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Acked-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Reviewed-by: Rob Herring <robh@...nel.org>
---
Changes since v3:
1. Add missing SPDX.
---
.../devicetree/bindings/media/cec-gpio.txt | 42 -----------
.../bindings/media/cec/cec-gpio.yaml | 74 +++++++++++++++++++
MAINTAINERS | 2 +-
3 files changed, 75 insertions(+), 43 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/media/cec-gpio.txt
create mode 100644 Documentation/devicetree/bindings/media/cec/cec-gpio.yaml
diff --git a/Documentation/devicetree/bindings/media/cec-gpio.txt b/Documentation/devicetree/bindings/media/cec-gpio.txt
deleted file mode 100644
index 47e8d73d32a3..000000000000
--- a/Documentation/devicetree/bindings/media/cec-gpio.txt
+++ /dev/null
@@ -1,42 +0,0 @@
-* HDMI CEC GPIO driver
-
-The HDMI CEC GPIO module supports CEC implementations where the CEC line
-is hooked up to a pull-up GPIO line and - optionally - the HPD line is
-hooked up to another GPIO line.
-
-Please note: the maximum voltage for the CEC line is 3.63V, for the HPD and
-5V lines it is 5.3V. So you may need some sort of level conversion circuitry
-when connecting them to a GPIO line.
-
-Required properties:
- - compatible: value must be "cec-gpio".
- - cec-gpios: gpio that the CEC line is connected to. The line should be
- tagged as open drain.
-
-If the CEC line is associated with an HDMI receiver/transmitter, then the
-following property is also required:
-
- - hdmi-phandle - phandle to the HDMI controller, see also cec.txt.
-
-If the CEC line is not associated with an HDMI receiver/transmitter, then
-the following property is optional and can be used for debugging HPD changes:
-
- - hpd-gpios: gpio that the HPD line is connected to.
-
-This property is optional and can be used for debugging changes on the 5V line:
-
- - v5-gpios: gpio that the 5V line is connected to.
-
-Example for the Raspberry Pi 3 where the CEC line is connected to
-pin 26 aka BCM7 aka CE1 on the GPIO pin header, the HPD line is
-connected to pin 11 aka BCM17 and the 5V line is connected to pin
-15 aka BCM22 (some level shifter is needed for the HPD and 5V lines!):
-
-#include <dt-bindings/gpio/gpio.h>
-
-cec-gpio {
- compatible = "cec-gpio";
- cec-gpios = <&gpio 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
- hpd-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
- v5-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
-};
diff --git a/Documentation/devicetree/bindings/media/cec/cec-gpio.yaml b/Documentation/devicetree/bindings/media/cec/cec-gpio.yaml
new file mode 100644
index 000000000000..64d7ec057672
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/cec/cec-gpio.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/cec/cec-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HDMI CEC GPIO
+
+maintainers:
+ - Hans Verkuil <hverkuil-cisco@...all.nl>
+
+description: |
+ The HDMI CEC GPIO module supports CEC implementations where the CEC line is
+ hooked up to a pull-up GPIO line and - optionally - the HPD line is hooked up
+ to another GPIO line.
+
+ Please note:: the maximum voltage for the CEC line is 3.63V, for the HPD and
+ 5V lines it is 5.3V. So you may need some sort of level conversion
+ circuitry when connecting them to a GPIO line.
+
+properties:
+ compatible:
+ const: cec-gpio
+
+ cec-gpios:
+ maxItems: 1
+ description:
+ GPIO that the CEC line is connected to. The line should be tagged as open
+ drain.
+
+ hpd-gpios:
+ maxItems: 1
+ description:
+ GPIO that the HPD line is connected to. Used for debugging HPD changes
+ when the CEC line is not associated with an HDMI receiver/transmitter.
+
+ v5-gpios:
+ maxItems: 1
+ description:
+ GPIO that the 5V line is connected to. Used for debugging changes on the
+ 5V line.
+
+required:
+ - compatible
+ - cec-gpios
+
+allOf:
+ - $ref: cec-common.yaml#
+ - if:
+ required:
+ - hdmi-phandle
+ then:
+ properties:
+ hpd-gpios: false
+
+ - if:
+ required:
+ - hpd-gpios
+ then:
+ properties:
+ hdmi-phandle: false
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ cec {
+ compatible = "cec-gpio";
+ cec-gpios = <&gpio 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+ hpd-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
+ v5-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 05acbaecef52..197351d3bb57 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4848,7 +4848,7 @@ L: linux-media@...r.kernel.org
S: Supported
W: http://linuxtv.org
T: git git://linuxtv.org/media_tree.git
-F: Documentation/devicetree/bindings/media/cec-gpio.txt
+F: Documentation/devicetree/bindings/media/cec/cec-gpio.yaml
F: drivers/media/cec/platform/cec-gpio/
CELL BROADBAND ENGINE ARCHITECTURE
--
2.34.1
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