From: "Jonathan Neuschäfer" <j.neuschaefer@gmx.net>
To: linux-kernel@vger.kernel.org
Cc: "Lee Jones" <lee.jones@linaro.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Jonathan Neuschäfer" <j.neuschaefer@gmx.net>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Alessandro Zummo" <a.zummo@towertech.it>,
"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
"Shawn Guo" <shawnguo@kernel.org>,
"Sascha Hauer" <s.hauer@pengutronix.de>,
"Pengutronix Kernel Team" <kernel@pengutronix.de>,
"Fabio Estevam" <festevam@gmail.com>,
"NXP Linux Team" <linux-imx@nxp.com>,
"Sam Ravnborg" <sam@ravnborg.org>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Heiko Stuebner" <heiko.stuebner@theobroma-systems.com>,
"Stephan Gerhold" <stephan@gerhold.net>,
"Lubomir Rintel" <lkundrak@v3.sk>,
"Mark Brown" <broonie@kernel.org>, allen <allen.chen@ite.com.tw>,
"Mauro Carvalho Chehab" <mchehab+huawei@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
devicetree@vger.kernel.org, linux-pwm@vger.kernel.org,
linux-rtc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
"Heiko Stuebner" <heiko@sntech.de>,
"Josua Mayer" <josua.mayer@jm0.eu>,
"Andreas Kemnade" <andreas@kemnade.info>,
"Arnd Bergmann" <arnd@arndb.de>,
"Daniel Palmer" <daniel@0x0f.com>
Subject: [PATCH v2 02/10] dt-bindings: mfd: Add binding for Netronix's embedded controller
Date: Sat, 5 Sep 2020 15:32:22 +0200 [thread overview]
Message-ID: <20200905133230.1014581-3-j.neuschaefer@gmx.net> (raw)
In-Reply-To: <20200905133230.1014581-1-j.neuschaefer@gmx.net>
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 Neuschäfer <j.neuschaefer@gmx.net>
---
v2:
- Add the plaintext DT binding for comparison
For reference, here is the binding in text form:
Netronix Embedded Controller
This EC is found in e-book readers of multiple brands (e.g. Kobo, Tolino), and
is typically implemented as a TI MSP430 microcontroller.
Required properties:
- compatible: should be "netronix,ntxec"
- reg: The I2C address of the EC
Optional properties:
- system-power-controller:
See Documentation/devicetree/bindings/power/power-controller.txt
- interrupts or interrupts-extended
- interrupt-controller
- #interrupt-cells: Should be 1
Optional subnodes:
Sub-nodes are identified by their compatible string.
compatible string | description
--------------------------------|--------------------------------------
netronix,ntxec-pwm | PWM (used for backlight)
netronix,ntxec-rtc | real time clock
Example:
&i2c3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c3>;
status = "okay";
ec: embedded-controller@43 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ntxec>;
compatible = "netronix,ntxec";
reg = <0x43>;
system-power-controller;
interrupt-parent = <&gpio4>;
interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
interrupt-controller;
#interrupt-cells = <1>;
pwm {
compatible = "netronix,ntxec-pwm";
#pwm-cells = <2>;
};
rtc {
compatible = "netronix,ntxec-rtc";
interrupts-extended = <&ec 15>;
interrupt-names = "alarm";
};
};
};
---
.../bindings/mfd/netronix,ntxec.yaml | 57 +++++++++++++++++++
1 file changed, 57 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml
diff --git a/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml b/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml
new file mode 100644
index 0000000000000..596df460f98eb
--- /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 Neuschäfer <j.neuschaefer@gmx.net>
+
+description: |
+ This EC is found in e-book readers of multiple brands (e.g. Kobo, Tolino), 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-controller.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 = <1>;
+ #size-cells = <0>;
+
+ ec: embedded-controller@43 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_ntxec>;
+
+ compatible = "netronix,ntxec";
+ reg = <0x43>;
+ system-power-controller;
+ interrupt-parent = <&gpio4>;
+ interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+ };
--
2.28.0
next prev parent reply other threads:[~2020-09-05 13:40 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-05 13:32 [PATCH v2 00/10] Netronix embedded controller driver for Kobo and Tolino ebook readers Jonathan Neuschäfer
2020-09-05 13:32 ` [PATCH v2 01/10] dt-bindings: Add vendor prefix for Netronix, Inc Jonathan Neuschäfer
2020-09-15 0:43 ` Rob Herring
2020-09-05 13:32 ` Jonathan Neuschäfer [this message]
2020-09-15 0:50 ` [PATCH v2 02/10] dt-bindings: mfd: Add binding for Netronix's embedded controller Rob Herring
2020-09-17 11:12 ` Jonathan Neuschäfer
2020-09-05 13:32 ` [PATCH v2 03/10] mfd: Add base driver for Netronix " Jonathan Neuschäfer
2020-09-08 13:29 ` Lee Jones
2020-09-10 12:04 ` Jonathan Neuschäfer
2020-09-05 13:32 ` [PATCH v2 04/10] dt-bindings: pwm: Add bindings for PWM function in Netronix EC Jonathan Neuschäfer
2020-09-15 0:54 ` Rob Herring
2020-09-15 6:23 ` Andreas Kemnade
2020-09-15 14:31 ` Rob Herring
2020-09-17 11:58 ` Jonathan Neuschäfer
2020-09-05 13:32 ` [PATCH v2 05/10] pwm: ntxec: Add driver " Jonathan Neuschäfer
[not found] ` <CAHp75VdUHoOyM3bObzhdfiqpne0AmSK_UakteTZxnjqJVrNV9A@mail.gmail.com>
2020-09-08 8:14 ` Lee Jones
2020-09-08 8:47 ` Andy Shevchenko
2020-09-08 9:35 ` Lee Jones
2020-09-10 19:13 ` Jonathan Neuschäfer
2020-09-10 19:09 ` Jonathan Neuschäfer
2020-09-05 13:32 ` [PATCH v2 06/10] dt-bindings: rtc: Add bindings for Netronix embedded controller RTC Jonathan Neuschäfer
2020-09-05 13:32 ` [PATCH v2 07/10] rtc: Introduce RTC_TIMESTAMP_END_2255 Jonathan Neuschäfer
2020-09-08 9:39 ` Alexandre Belloni
2020-09-10 19:21 ` Jonathan Neuschäfer
2020-09-05 14:45 ` [PATCH v2 08/10] rtc: New driver for RTC in Netronix embedded controller Jonathan Neuschäfer
[not found] ` <CAHp75Vca+Tp0v_Q4RBuUNSo_5aq_u6mBGeXecHULC1Avgm5=Xg@mail.gmail.com>
2020-09-10 19:42 ` Jonathan Neuschäfer
2020-09-05 14:45 ` [PATCH v2 09/10] MAINTAINERS: Add entry for " Jonathan Neuschäfer
2020-09-05 14:45 ` [PATCH v2 10/10] ARM: dts: imx50-kobo-aura: Add " Jonathan Neuschäfer
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