dts: rk3399-puma: add DTS for RK3399-Q7 (Puma) SoM

The RK3399-Q7 is a system-on-module featuring the Rockchip RK3399
in a Qseven-compatible form-factor.

These changes add a device-tree describing the board and its
interfaces for basic functionality (e.g. GbE, SPI, eMMC, SD-card).

This includes the following changes from the original development:

 * dts: rk3399-puma: include DTS for RK3399-Q7 SoM in the Makefile
 * dts: rk3399-puma: add gmac for the RK3399-Q7

This change enables the Gigabit Ethernet support on the RK3399-Q7.

 * dts: rk3399-puma: use serial0 for stdout
 * dts: rk3399-puma: prepare the sdmmc node for SPL booting
 * dts: rk3399-puma: enable spi1 and spi5, add /spi1/spiflash

The RK3399-Q7 (Puma) unsually (this is a build-time option for
customised boards) has an on-module SPI-flash connected to SPI1.
As of today, this is a Winbond W25Q32DW (32MBit) device.

The SPI5 controller is routed to the Q7 edge connector and provides
general-purpose SPI connectivity for customer base-boards.

With some minor improvements on integration into our outbound tree
 - explicitly modelled the SPI flash as 'spiflash' under spi0
   [dts: rk3399-puma: explicitly model spi-flash under spi1]
 - renamed the aliases to spi0 and spi1 to allow easier use of
   commands and legacy (SPL) infrastructure... i.e. the controllers
   will be 0 and 1 for 'sf probe', 'sspi', etc.
   [dts: rk3399-puma: rename aliases to number spi as 0 and 1 for commands]

 * dts: rk3399-puma: include SPI in the spl-boot-order property

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Simon Glass <sjg@chromium.org>

arch/arm/dts/Makefile

@@ -40,7 +40,8 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += \
 	rk3288-tinker.dtb \
 	rk3288-popmetal.dtb \
 	rk3328-evb.dtb \
-	rk3399-evb.dtb
+	rk3399-evb.dtb \
+	rk3399-puma.dtb
 dtb-$(CONFIG_ARCH_MESON) += \
 	meson-gxbb-odroidc2.dtb
 dtb-$(CONFIG_TEGRA) += tegra20-harmony.dtb \

arch/arm/dts/rk3399-puma.dts

@@ -0,0 +1,189 @@
+/*
+ * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+/dts-v1/;
+#include <dt-bindings/pwm/pwm.h>
+#include "rk3399.dtsi"
+#include "rk3399-sdram-ddr3-1333.dtsi"
+
+/ {
+	model = "Theobroma Systems RK3399-Q7 SoM";
+	compatible = "tsd,puma", "rockchip,rk3399";
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		u-boot,spl-boot-order = &spiflash, &sdhci, &sdmmc;
+	};
+
+	aliases {
+		spi0 = &spi1;
+		spi1 = &spi5;
+	};
+
+	vdd_center: vdd-center {
+		compatible = "pwm-regulator";
+		pwms = <&pwm3 0 25000 0>;
+		regulator-name = "vdd_center";
+		regulator-min-microvolt = <800000>;
+		regulator-max-microvolt = <1400000>;
+		regulator-init-microvolt = <950000>;
+		regulator-always-on;
+		regulator-boot-on;
+		status = "okay";
+	};
+
+	vcc3v3_sys: vcc3v3-sys {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	vcc_phy: vcc-phy-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_phy";
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	vcc5v0_host: vcc5v0-host-en {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_host";
+		gpio = <&gpio4 25 GPIO_ACTIVE_HIGH>;
+	};
+
+	clkin_gmac: external-gmac-clock {
+		compatible = "fixed-clock";
+		clock-frequency = <125000000>;
+		clock-output-names = "clkin_gmac";
+		#clock-cells = <0>;
+	};
+
+	vcc_phy: vcc-phy-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_phy";
+		regulator-always-on;
+		regulator-boot-on;
+	};
+};
+
+&emmc_phy {
+	status = "okay";
+};
+
+&pwm0 {
+	status = "okay";
+};
+
+&pwm2 {
+	status = "okay";
+};
+
+&pwm3 {
+	status = "okay";
+};
+
+&sdmmc {
+        u-boot,dm-pre-reloc;
+	bus-width = <4>;
+	fifo-mode; /* until we fix DMA in SPL */
+	status = "okay";
+};
+
+&sdhci {
+	bus-width = <8>;
+	mmc-hs400-1_8v;
+	mmc-hs400-enhanced-strobe;
+	non-removable;
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&usb_host0_ehci {
+	status = "okay";
+};
+
+&usb_host0_ohci {
+	status = "okay";
+};
+
+&dwc3_typec0 {
+	status = "okay";
+};
+
+&usb_host1_ehci {
+	status = "okay";
+};
+
+&usb_host1_ohci {
+	status = "okay";
+};
+
+&dwc3_typec1 {
+	status = "okay";
+};
+
+&pinctrl {
+	pmic {
+		pmic_int_l: pmic-int-l {
+			rockchip,pins =
+				<1 21 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		pmic_dvs2: pmic-dvs2 {
+			rockchip,pins =
+				<1 18 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+	};
+};
+
+&gmac {
+        phy-supply = <&vcc_phy>;
+	phy-mode = "rgmii";
+	clock_in_out = "input";
+	snps,reset-gpio = <&gpio3 16 GPIO_ACTIVE_LOW>;
+	snps,reset-active-low;
+	snps,reset-delays-us = <0 10000 50000>;
+	assigned-clocks = <&cru SCLK_RMII_SRC>;
+	assigned-clock-parents = <&clkin_gmac>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii_pins>;
+	tx_delay = <0x10>;
+	rx_delay = <0x10>;
+	status = "okay";
+};
+
+&spi1 {
+	u-boot,dm-pre-reloc;
+
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	spiflash: w25q32dw@0 {
+		u-boot,dm-pre-reloc;
+
+		compatible = "spi-flash";
+		reg = <0>;
+		spi-max-frequency = <5000000>;
+		spi-cpol;
+		spi-cpha;
+	};
+};
+
+&spi5 {
+	status = "okay";
+};