[PATCH] ARM: dts: da850: Add basic DTS for the L138/C6748 Dev Kit

[Karl Beldan]

The LCDK is the successor to the late Hawkboard and has the same machine
number.
Among the differences are the flash (16bits vs 8bits) and some pins
(MMC, LEDs, buttons, some external connectors), however the main
components remain the same (eth. PHY, Audio Codec, Video decoder and
DAC) except for the main PMIC, different and hard-wired on the LCDK (the
LDOs and DCDCs are always ON).
A DT-only boot with this addition gives functional uart, reboot via
watchdog, rtc, ethernet and MMC (I added the CD gpio for the MMC
although davinci_mmc doesn't call yet the mmc core OF facilities).

Signed-off-by: Karl Beldan <kbeldan at baylibre.com>
---
 Documentation/devicetree/bindings/arm/davinci.txt |  4 ++
 arch/arm/boot/dts/Makefile                        |  1 +
 arch/arm/boot/dts/omapl138-lcdk.dts               | 71 +++++++++++++++++++++++
 arch/arm/mach-davinci/da8xx-dt.c                  |  1 +
 4 files changed, 77 insertions(+)
 create mode 100644 arch/arm/boot/dts/omapl138-lcdk.dts

diff --git a/Documentation/devicetree/bindings/arm/davinci.txt b/Documentation/devicetree/bindings/arm/davinci.txt
index cfaeda4..1482c74 100644
--- a/Documentation/devicetree/bindings/arm/davinci.txt
+++ b/Documentation/devicetree/bindings/arm/davinci.txt
@@ -5,6 +5,10 @@ DA850/OMAP-L138/AM18x Evaluation Module (EVM) board
 Required root node properties:
     - compatible = "ti,da850-evm", "ti,da850";
 
+DA850/OMAP-L138/AM18x L138/C6748 Development Kit (LCDK) board
+Required root node properties:
+    - compatible = "ti,omapl138-lcdk", "ti,da850";
+
 EnBW AM1808 based CMC board
 Required root node properties:
     - compatible = "enbw,cmc", "ti,da850;
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 414b427..da3f69b 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -105,6 +105,7 @@ dtb-$(CONFIG_ARCH_BERLIN) += \
 dtb-$(CONFIG_ARCH_BRCMSTB) += \
 	bcm7445-bcm97445svmb.dtb
 dtb-$(CONFIG_ARCH_DAVINCI) += \
+	omapl138-lcdk.dtb \
 	da850-enbw-cmc.dtb \
 	da850-evm.dtb
 dtb-$(CONFIG_ARCH_DIGICOLOR) += \
diff --git a/arch/arm/boot/dts/omapl138-lcdk.dts b/arch/arm/boot/dts/omapl138-lcdk.dts
new file mode 100644
index 0000000..fad3b6d
--- /dev/null
+++ b/arch/arm/boot/dts/omapl138-lcdk.dts
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2016 BayLibre, Inc.
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+#include "da850.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "DA850/AM1808/OMAP-L138 LCDK";
+	compatible = "ti,omapl138-lcdk", "ti,da850";
+
+	aliases {
+		serial2 = &serial2;
+	};
+
+	chosen {
+		bootargs = "console=ttyS2,115200n8 earlycon";
+		stdout-path = "serial2:115200n8";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0xc0000000 0x08000000>;
+	};
+};
+
+&pmx_core {
+	status = "okay";
+};
+
+&serial2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&serial2_rxtx_pins>;
+	status = "okay";
+};
+
+&wdt {
+	status = "okay";
+};
+
+&rtc0 {
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&mdio {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mdio_pins>;
+	bus_freq = <2200000>;
+	status = "okay";
+};
+
+&eth0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mii_pins>;
+	status = "okay";
+};
+
+&mmc0 {
+	max-frequency = <50000000>;
+	bus-width = <4>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_pins>;
+	cd-gpios = <&gpio 64 GPIO_ACTIVE_HIGH>;
+	status = "okay";
+};
diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c
index 754f478..d5f710c 100644
--- a/arch/arm/mach-davinci/da8xx-dt.c
+++ b/arch/arm/mach-davinci/da8xx-dt.c
@@ -49,6 +49,7 @@ static void __init da850_init_machine(void)
 
 static const char *const da850_boards_compat[] __initconst = {
 	"enbw,cmc",
+	"ti,omapl138-lcdk",
 	"ti,da850-evm",
 	"ti,da850",
 	NULL,
-- 
2.9.0.rc1