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From: =?UTF-8?q?Jonathan=20Neusch=C3=A4fer?= <j.neuschaefer-hi6Y0CQ0nG0@public.gmane.org>
Subject: [RFC PATCH 03/10] dt-bindings: mfd: Add binding for Netronix's embedded controller
Date: Sun, 21 Jun 2020 00:42:14 +0200
Message-ID: <20200620224222.1312520-2-j.neuschaefer@gmx.net>
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Cc: Lee Jones <lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, =?UTF-8?q?Jonathan=20Neusch=C3=A4fer?= <j.neuschaefer-hi6Y0CQ0nG0@public.gmane.org>, Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>, Alessandro Zummo <a.zummo-BfzFCNDTiLLj+vYz1yj4TQ@public.gmane.org>, Alexandre Belloni <alexandre.belloni-LDxbnhwyfcJBDgjK7y7TUQ@public.gmane.org>, Shawn Guo <shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>, Pengutronix Kernel Team <kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>, Fabio Estevam <festevam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, NXP Linux Team <linux-imx-3arQi8VN3Tc@public.gmane.org>, Sam Ravnborg <sam-uyr5N9Q2VtJg9hUCZPvPmw@public.gmane.org>, Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Heiko Stuebner <heiko.stuebner-SN7IsUiht6C/RdPyistoZJqQE7yCjDx5@public.gmane.org>, Stephan Gerhold <stephan-3XONVrnlUWDR7s880joybQ@public.gmane.org>, Lubomir Rintel <lkundrak-NGH9Lh4a5iE@public.gmane.org>, Mark Brown <broonie@kernel.>
List-Id: linux-pwm@vger.kernel.org

This EC is found in e-book readers of multiple brands (e.g. Kobo,
Tolino), and is typically implemented as a TI MSP430 microcontroller.

It controls different functions of the system, such as power on/off,
RTC, PWM for the backlight. The exact functionality provided can vary
between boards.

Signed-off-by: Jonathan Neusch=C3=A4fer <j.neuschaefer-hi6Y0CQ0nG0@public.gmane.org>
=2D--
 .../bindings/mfd/netronix,ntxec.yaml          | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/netronix,ntxec.y=
aml

diff --git a/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml b/D=
ocumentation/devicetree/bindings/mfd/netronix,ntxec.yaml
new file mode 100644
index 0000000000000..596df460f98eb
=2D-- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/netronix,ntxec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Netronix Embedded Controller
+
+maintainers:
+  - Jonathan Neusch=C3=A4fer <j.neuschaefer-hi6Y0CQ0nG0@public.gmane.org>
+
+description: |
+  This EC is found in e-book readers of multiple brands (e.g. Kobo, Tolin=
o), and
+  is typically implemented as a TI MSP430 microcontroller.
+
+
+properties:
+  compatible:
+    const: netronix,ntxec
+
+  reg:
+    items:
+      - description: The I2C address of the EC
+
+  system-power-controller:
+    type: boolean
+    description: See Documentation/devicetree/bindings/power/power-contro=
ller.txt
+
+  interrupts:
+    minItems: 1
+    description:
+      The EC can signal interrupts via a GPIO line
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+            #address-cells =3D <1>;
+            #size-cells =3D <0>;
+
+            ec: embedded-controller@43 {
+                    pinctrl-names =3D "default";
+                    pinctrl-0 =3D <&pinctrl_ntxec>;
+
+                    compatible =3D "netronix,ntxec";
+                    reg =3D <0x43>;
+                    system-power-controller;
+                    interrupt-parent =3D <&gpio4>;
+                    interrupts =3D <11 IRQ_TYPE_EDGE_FALLING>;
+                    interrupt-controller;
+                    #interrupt-cells =3D <1>;
+            };
+    };
=2D-
2.27.0