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Date:   Sat, 22 Aug 2020 17:10:21 +0200
From:   Reto Schneider <code@...o-schneider.ch>
To:     linux-arm-kernel@...ts.infradead.org, alexandre.belloni@...tlin.com
Cc:     Reto Schneider <reto.schneider@...qvarnagroup.com>,
        Stefan Roese <sr@...x.de>,
        Michael Zimmermann <michael.zimmermann@...ndcentrix.net>,
        Rob Herring <robh+dt@...nel.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Kamel Bouhara <kamel.bouhara@...tlin.com>,
        Cristian Birsan <cristian.birsan@...rochip.com>,
        Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>,
        Eugen Hristev <eugen.hristev@...rochip.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 2/2] ARM: at91: Add GARDENA smart Gateway (Art. 19000) support

From: Reto Schneider <reto.schneider@...qvarnagroup.com>

This patch adds support for the GARDENA smart Gateway, which is based on
the Atmel AT91SAM9G25. It is equipped with 128 MiB of DDR2 RAM and
256 MiB NAND storage.

Please note that this gateway is not actually based on a AT91SAM9x5 EK
board, but is close enough to allow its DT to be used.

Co-developed-by: Stefan Roese <sr@...x.de>
Signed-off-by: Stefan Roese <sr@...x.de>
Co-developed-by: Michael Zimmermann <michael.zimmermann@...ndcentrix.net>
Signed-off-by: Michael Zimmermann <michael.zimmermann@...ndcentrix.net>
Signed-off-by: Reto Schneider <reto.schneider@...qvarnagroup.com>

---
Changes in v3:
- Fix DT binding schema violation, put it in separate commit
- Fix line length violation
- Sort new dtb entry in Makefile

Changes in v2:
- Remove duplicated DT entries
- Improve model name
- Add device to relevant DT binding schema
---
 arch/arm/boot/dts/Makefile                    |   1 +
 .../dts/at91sam9g25-gardena-smart-gateway.dts | 158 ++++++++++++++++++
 2 files changed, 159 insertions(+)
 create mode 100644 arch/arm/boot/dts/at91sam9g25-gardena-smart-gateway.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index e6a1cac0bfc7..6cd1cfcd5316 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -43,6 +43,7 @@ dtb-$(CONFIG_SOC_AT91SAM9) += \
 	at91-smartkiz.dtb \
 	at91-wb45n.dtb \
 	at91sam9g15ek.dtb \
+	at91sam9g25-gardena-smart-gateway.dtb \
 	at91sam9g25ek.dtb \
 	at91sam9g35ek.dtb \
 	at91sam9x25ek.dtb \
diff --git a/arch/arm/boot/dts/at91sam9g25-gardena-smart-gateway.dts b/arch/arm/boot/dts/at91sam9g25-gardena-smart-gateway.dts
new file mode 100644
index 000000000000..7da70aeeb528
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9g25-gardena-smart-gateway.dts
@@ -0,0 +1,158 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree file for the GARDENA smart Gateway (Article No. 19000)
+ *
+ *  Copyright (C) 2020 GARDENA GmbH
+ */
+
+/dts-v1/;
+
+#include "at91sam9g25.dtsi"
+#include "at91sam9x5ek.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "GARDENA smart Gateway (Article No. 19000)";
+	compatible = "gardena,smart-gateway-at91sam", "atmel,at91sam9g25", "atmel,at91sam9x5",
+		"atmel,at91sam9";
+
+	aliases {
+		serial1 = &usart3;
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		user_btn1 {
+			label = "USER_BTN1";
+			gpios = <&pioA 24 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_PROG1>;
+		};
+	};
+
+	1wire_cm {
+		status = "disabled";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		power_blue {
+			label = "smartgw:power:blue";
+			gpios = <&pioC 21 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		power_green {
+			label = "smartgw:power:green";
+			gpios = <&pioC 20 GPIO_ACTIVE_HIGH>;
+			default-state = "on";
+		};
+
+		power_red {
+			label = "smartgw:power:red";
+			gpios = <&pioC 19 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		radio_blue {
+			label = "smartgw:radio:blue";
+			gpios = <&pioC 18 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		radio_green {
+			label = "smartgw:radio:green";
+			gpios = <&pioC 17 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		radio_red {
+			label = "smartgw:radio:red";
+			gpios = <&pioC 16 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		internet_blue {
+			label = "smartgw:internet:blue";
+			gpios = <&pioC 15 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		internet_green {
+			label = "smartgw:internet:green";
+			gpios = <&pioC 14 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		internet_red {
+			label = "smartgw:internet:red";
+			gpios = <&pioC 13 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		heartbeat {
+			label = "smartgw:heartbeat";
+			gpios = <&pioB 8 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+		};
+
+		pb18 {
+			status = "disabled";
+		};
+
+		pd21 {
+			status = "disabled";
+		};
+	};
+};
+
+&macb0 {
+	phy-mode = "rmii";
+	status = "okay";
+};
+
+&usart0 {
+	status = "disabled";
+};
+
+&usart2 {
+	status = "disabled";
+};
+
+&usart3 {
+	status = "okay";
+
+	pinctrl-0 = <&pinctrl_usart3
+		     &pinctrl_usart3_rts
+		     &pinctrl_usart3_cts
+		    >;
+};
+
+&watchdog {
+	status = "okay";
+};
+
+&mmc0 {
+	status = "disabled";
+};
+
+&mmc1 {
+	status = "disabled";
+};
+
+&spi0 {
+	status = "disabled";
+};
+
+&i2c0 {
+	status = "disabled";
+};
+
+&adc0 {
+	status = "disabled";
+};
+
+&ssc0 {
+	status = "disabled";
+};
-- 
2.27.0

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