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Date: Sun, 21 Jun 2020 00:39:05 +0200
From: Jonathan Neuschäfer <j.neuschaefer@....net>
To: linux-kernel@...r.kernel.org
Cc: Lee Jones <lee.jones@...aro.org>, Rob Herring <robh+dt@...nel.org>,
Jonathan Neuschäfer <j.neuschaefer@....net>,
Thierry Reding <thierry.reding@...il.com>,
Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>,
Alessandro Zummo <a.zummo@...ertech.it>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
NXP Linux Team <linux-imx@....com>,
Sam Ravnborg <sam@...nborg.org>,
Linus Walleij <linus.walleij@...aro.org>,
Heiko Stuebner <heiko.stuebner@...obroma-systems.com>,
Stephan Gerhold <stephan@...hold.net>,
Lubomir Rintel <lkundrak@...sk>,
Mark Brown <broonie@...nel.org>, allen <allen.chen@....com.tw>,
Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
"David S. Miller" <davem@...emloft.net>,
devicetree@...r.kernel.org, linux-pwm@...r.kernel.org,
linux-rtc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Heiko Stuebner <heiko@...ech.de>,
Josua Mayer <josua.mayer@....eu>,
Andreas Kemnade <andreas@...nade.info>
Subject: [RFC PATCH 01/10] DT bindings in plain text format
For reference, here are the devicetree bindings in plaintext format.
(Not for merge.)
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@....net>
---
.../bindings/mfd/netronix,ntxec.txt | 58 +++++++++++++++++++
.../bindings/pwm/netronix,ntxec-pwm.txt | 27 +++++++++
.../bindings/rtc/netronix,ntxec-rtc.txt | 17 ++++++
3 files changed, 102 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/netronix,ntxec.txt
create mode 100644 Documentation/devicetree/bindings/pwm/netronix,ntxec-pwm.txt
create mode 100644 Documentation/devicetree/bindings/rtc/netronix,ntxec-rtc.txt
diff --git a/Documentation/devicetree/bindings/mfd/netronix,ntxec.txt b/Documentation/devicetree/bindings/mfd/netronix,ntxec.txt
new file mode 100644
index 0000000000000..e303932657999
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/netronix,ntxec.txt
@@ -0,0 +1,58 @@
+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 = <1>;
+ };
+
+ rtc {
+ compatible = "netronix,ntxec-rtc";
+ interrupts-extended = <&ec 15>;
+ interrupt-names = "alarm";
+ };
+ };
+};
diff --git a/Documentation/devicetree/bindings/pwm/netronix,ntxec-pwm.txt b/Documentation/devicetree/bindings/pwm/netronix,ntxec-pwm.txt
new file mode 100644
index 0000000000000..50be27f82559e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/netronix,ntxec-pwm.txt
@@ -0,0 +1,27 @@
+PWM functionality in Netronix Embedded Controller
+
+Required properties:
+- compatible: should be "netronix,ntxec-pwm"
+- #pwm-cells: should be 1.
+
+Available PWM channels:
+- 0: The PWM channel controlled by registers 0xa1-0xa7
+
+Example:
+
+ embedded-controller@43 {
+ compatible = "netronix,ntxec";
+ ...
+
+ ec_pwm: pwm {
+ compatible = "netronix,ntxec-pwm";
+ #pwm-cells = <1>;
+ };
+ };
+
+ ...
+
+ backlight {
+ compatible = "pwm-backlight";
+ pwms = <&ec_pwm 0 50000>;
+ };
diff --git a/Documentation/devicetree/bindings/rtc/netronix,ntxec-rtc.txt b/Documentation/devicetree/bindings/rtc/netronix,ntxec-rtc.txt
new file mode 100644
index 0000000000000..0ef9e791b6a36
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/netronix,ntxec-rtc.txt
@@ -0,0 +1,17 @@
+Netronix embedded controller RTC
+
+Required properties:
+
+- compatible: should be "netronix,ntxec-rtc"
+
+
+Example:
+
+ embedded-controller@43 {
+ compatible = "netronix,ntxec";
+ ...
+
+ rtc {
+ compatible = "netronix,ntxec-rtc";
+ };
+ }
--
2.27.0
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