ARM: dts: dove: Add proper support for Compulab CM-A510/SBC-A510

Existing dts file for Compulab CM-A510 was very limited due to missing
hardware. Now that we actually found somebody with that board, properly
rework it to provide a CoM/SoM include and a board file for Compulab's
SBC-A510.

Both the CM-A510 SoM and the SBC-A510 can be configured with different
options, so we only enable a minimum set of options. The actual board
configuration will have to be set by either the bootloader or user.

Although functionally not required, repeat even disabled nodes again
to increse their visibility in the dtsi/dts files.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Gabriel Dobato <dobatog@gmail.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

1 files changed, 182 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/dove-sbc-a510.dts b/arch/arm/boot/dts/dove-sbc-a510.dts
new file mode 100644
index 000000000000..288e707dea99
--- /dev/null
+++ b/arch/arm/boot/dts/dove-sbc-a510.dts
@@ -0,0 +1,182 @@
+/*
+ * Device Tree file for Compulab SBC-A510 Single Board Computer
+ *
+ * Copyright (C) 2015, Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; version 2 of the
+ *     License.
+ *
+ *     This file is distributed in the hope that it will be useful
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED , WITHOUT WARRANTY OF ANY KIND
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * SBC-A510 comprises a PCA9555 I2C GPIO expander its GPIO lines connected to
+ *
+ * 0.0 USB0 VBUS_EN (active high)
+ * 0.1 USB0 VBUS_GOOD
+ * 0.2 DVI transmitter TI TFP410 MSEN
+ * 0.3 DVI transmitter TI TFP410 PD# (active low power down)
+ * 0.4 LVDS transmitter DS90C365 PD# (active low power down)
+ * 0.5 LCD nRST (active low reset)
+ * 0.6 PCIe0 nRST (active low reset)
+ * 0.7 mini-PCIe slot W_DISABLE#
+ *
+ * 1.0 MMC WP
+ * 1.1 Camera Input FPC FLASH_STB and P21.5
+ * 1.2 Camera Input FPC WE        and P21.22
+ * 1.3 MMC VCC_EN (active high)   and P21.7
+ * 1.4 Camera Input FPC AFTR_RST  and P21.17
+ * 1.5 Camera Input FPC OE        and P21.19
+ * 1.6 Camera Input FPC SNPSHT    and P21.6
+ * 1.7 Camera Input FPC SHTR      and P21.10
+ */
+
+/dts-v1/;
+
+#include "dove-cm-a510.dtsi"
+
+/ {
+	model = "Compulab SBC-A510";
+	compatible = "compulab,sbc-a510", "compulab,cm-a510", "marvell,dove";
+
+	chosen {
+		stdout-path = &uart0;
+	};
+
+	regulators {
+		usb0_power: regulator@2 {
+			compatible = "regulator-fixed";
+			regulator-name = "USB Power";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio_ext 0 GPIO_ACTIVE_HIGH>;
+		};
+
+		mmc_power: regulator@3 {
+			compatible = "regulator-fixed";
+			regulator-name = "MMC Power";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			gpio = <&gpio_ext 13 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+/* Ethernet0 depends on CM-A510 option E1 */
+&mdio { status = "disabled"; };
+&eth { status = "disabled"; };
+&ethphy { status = "disabled"; };
+
+/*
+ * USB port 0 can be powered and monitored by I2C GPIO expander:
+ *  VBUS_ENABLE on GPIO0, VBUS_GOOD on GPIO1
+ */
+&ehci0 {
+	status = "okay";
+	vbus-supply = <&usb0_power>;
+};
+
+/* USB port 1 (and ports 2, 3 if CM-A510 has U4 option) */
+&ehci1 { status = "okay"; };
+
+/*
+ * I2C bus layout:
+ * i2c0:
+ *  - Audio Codec, 0x1a (option from CM-A510)
+ *  - DVI transmitter TI TFP410, 0x39
+ *  - HDMI/DVI DDC channel
+ * i2c1:
+ *  - GPIO expander, NXP PCA9555, 0x20
+ *  - VGA DDC channel
+ */
+&i2c {
+	pinctrl-0 = <&pmx_i2c1>;
+	pinctrl-names = "default";
+};
+
+&i2c0 {
+	/* TI TFP410 DVI transmitter */
+	dvi: video@39 {
+		compatible = "ti,tfp410";
+		reg = <0x39>;
+		powerdown-gpio = <&gpio_ext 3 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&i2c1 {
+	status = "okay";
+
+	/* NXP PCA9555 GPIO expander */
+	gpio_ext: gpio@20 {
+		compatible = "nxp,pca9555";
+		reg = <0x20>;
+		#gpio-cells = <2>;
+	};
+};
+
+&pcie { status = "okay"; };
+
+/*
+ * PCIe0 can be configured by Jumper E1 to be either connected to
+ * a mini-PCIe slot or a Pericom PI7C9X111 PCIe-to-PCI bridge.
+ */
+&pcie0 {
+	status = "okay";
+	pinctrl-0 = <&pmx_pcie0_clkreq>;
+	pinctrl-names = "default";
+	reset-gpios = <&gpio_ext 6 GPIO_ACTIVE_LOW>;
+};
+
+/* Ethernet1 depends on CM-A510 option E2 */
+&pcie1 { status = "disabled"; };
+
+/* SATA connector */
+&sata0 { status = "okay"; };
+
+/*
+ * SDIO0 is connected to a MMC/SD/SDIO socket, I2C GPIO expander has
+ *  VCC_MMC_ENABLE on GPIO13, MMC_WP on GPIO10
+ */
+&sdio0 {
+	vmmc-supply = <&mmc_power>;
+	wp-gpios = <&gpio_ext 10 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
+
+/* UART0 on RS232 mini-connector */
+&uart0 { status = "okay"; };
+/* UART2 on pin headers */
+&uart2 { status = "okay"; };