Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   =?UTF-8?q?Jonathan=20Neusch=C3=A4fer?= <j.neuschaefer@gmx.net>
To:     linux-kernel@vger.kernel.org
Cc:     Lee Jones <lee.jones@linaro.org>, Rob Herring <robh+dt@kernel.org>,
        =?UTF-8?q?Jonathan=20Neusch=C3=A4fer?= <j.neuschaefer@gmx.net>,
        Thierry Reding <thierry.reding@gmail.com>,
        =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= 
        <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>
Subject: [RFC PATCH 10/10] ARM: dts: imx50-kobo-aura: Add Netronix embedded controller
Date:   Sun, 21 Jun 2020 00:42:21 +0200
Message-Id: <20200620224222.1312520-9-j.neuschaefer@gmx.net>
In-Reply-To: <20200620224222.1312520-1-j.neuschaefer@gmx.net>
References: <20200620224222.1312520-1-j.neuschaefer@gmx.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Enable the Netronix EC on the Kobo Aura ebook reader.

Several features are still missing:
 - Frontlight/backlight. The vendor kernel drives the frontlight LED
   using the PWM output of the EC and an additional boost pin that
   increases the brightness.
 - Battery monitoring
 - Interrupts for RTC alarm and low-battery events

Signed-off-by: Jonathan Neusch=C3=A4fer <j.neuschaefer@gmx.net>
=2D--
 arch/arm/boot/dts/imx50-kobo-aura.dts | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx50-kobo-aura.dts b/arch/arm/boot/dts/imx=
50-kobo-aura.dts
index a0eaf869b9135..003a7d894902c 100644
=2D-- a/arch/arm/boot/dts/imx50-kobo-aura.dts
+++ b/arch/arm/boot/dts/imx50-kobo-aura.dts
@@ -6,6 +6,7 @@
 /dts-v1/;
 #include "imx50.dtsi"
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>

 / {
 	model =3D "Kobo Aura (N514)";
@@ -135,10 +136,34 @@ &i2c3 {
 	pinctrl-0 =3D <&pinctrl_i2c3>;
 	status =3D "okay";

-	/* TODO: embedded controller at 0x43 */
+	embedded-controller@43 {
+		pinctrl-names =3D "default";
+		pinctrl-0 =3D <&pinctrl_ec>;
+		compatible =3D "netronix,ntxec";
+		reg =3D <0x43>;
+		system-power-controller;
+		interrupts-extended =3D <&gpio4 11 IRQ_TYPE_EDGE_FALLING>;
+		interrupt-controller;
+		#interrupt-cells =3D <1>;
+
+		ec_pwm: pwm {
+			compatible =3D "netronix,ntxec-pwm";
+			#pwm-cells =3D <2>;
+		};
+
+		rtc {
+			compatible =3D "netronix,ntxec-rtc";
+		};
+	};
 };

 &iomuxc {
+	pinctrl_ec: ec {
+		fsl,pins =3D <
+			MX50_PAD_CSPI_SS0__GPIO4_11		0x0	/* INT */
+		>;
+	};
+
 	pinctrl_gpiokeys: gpiokeys {
 		fsl,pins =3D <
 			MX50_PAD_CSPI_MISO__GPIO4_10		0x0
=2D-
2.27.0