arm: tegra: initial support for apalis t30

This patch adds board support for the Toradex Apalis T30 a computer on
module which can be used on different carrier boards.

For the sake of ease of use we do not distinguish between different
carrier boards for now as the base module features are deemed
sufficient enough for regular booting.

The following functionality is working so far:
- eMMC boot and environment storage
- Gigabit Ethernet (once Thierry's PCIe as well as my E1000 resp. i210
  fixes hit mainline)
- MMC/SD cards (both 8-bit as well as 4-bit slot)
- USB client/host (dual role port as client e.g. for DFU/UMS, other two
  ports as host)

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

4 files changed, 318 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/tegra30/Kconfig b/arch/arm/cpu/armv7/tegra30/Kconfig
index 54aec4e..3abdc7b 100644
--- a/arch/arm/cpu/armv7/tegra30/Kconfig
+++ b/arch/arm/cpu/armv7/tegra30/Kconfig
@@ -3,6 +3,9 @@ if TEGRA30
 choice
 	prompt "Tegra30 board select"
 
+config TARGET_APALIS_T30
+	bool "Toradex Apalis T30 board"
+
 config TARGET_BEAVER
 	bool "NVIDIA Tegra30 Beaver evaluation board"
 
@@ -20,6 +23,7 @@ endchoice
 config SYS_SOC
 	default "tegra30"
 
+source "board/toradex/apalis_t30/Kconfig"
 source "board/nvidia/beaver/Kconfig"
 source "board/nvidia/cardhu/Kconfig"
 source "board/toradex/colibri_t30/Kconfig"
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index c37580e..c346063 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -22,6 +22,7 @@ dtb-$(CONFIG_TEGRA) += tegra20-harmony.dtb \
 	tegra20-ventana.dtb \
 	tegra20-whistler.dtb \
 	tegra20-colibri_t20_iris.dtb \
+	tegra30-apalis.dtb \
 	tegra30-beaver.dtb \
 	tegra30-cardhu.dtb \
 	tegra30-colibri.dtb \
diff --git a/arch/arm/dts/tegra30-apalis.dts b/arch/arm/dts/tegra30-apalis.dts
new file mode 100644
index 0000000..5c717e2c
--- /dev/null
+++ b/arch/arm/dts/tegra30-apalis.dts
@@ -0,0 +1,300 @@
+/dts-v1/;
+
+#include "tegra30.dtsi"
+
+/ {
+	model = "Toradex Apalis T30";
+	compatible = "toradex,apalis_t30", "nvidia,tegra30";
+
+	aliases {
+		i2c0 = "/i2c@7000d000";
+		i2c1 = "/i2c@7000c000";
+		i2c2 = "/i2c@7000c500";
+		i2c3 = "/i2c@7000c700";
+		sdhci0 = "/sdhci@78000600";
+		sdhci1 = "/sdhci@78000400";
+		sdhci2 = "/sdhci@78000000";
+		usb0 = "/usb@7d000000";
+		usb1 = "/usb@7d004000";
+		usb2 = "/usb@7d008000";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x40000000>;
+	};
+
+	pcie-controller@00003000 {
+		status = "okay";
+		avdd-pexa-supply = <&vdd2_reg>;
+		vdd-pexa-supply = <&vdd2_reg>;
+		avdd-pexb-supply = <&vdd2_reg>;
+		vdd-pexb-supply = <&vdd2_reg>;
+		avdd-pex-pll-supply = <&vdd2_reg>;
+		avdd-plle-supply = <&ldo6_reg>;
+		vddio-pex-ctl-supply = <&sys_3v3_reg>;
+		hvdd-pex-supply = <&sys_3v3_reg>;
+
+		pci@1,0 {
+			nvidia,num-lanes = <4>;
+		};
+
+		pci@2,0 {
+			nvidia,num-lanes = <1>;
+		};
+
+		pci@3,0 {
+			status = "okay";
+			nvidia,num-lanes = <1>;
+		};
+	};
+
+	/*
+	 * GEN1_I2C: I2C1_SDA/SCL on MXM3 pin 209/211 (e.g. RTC on carrier
+	 * board)
+	 */
+	i2c@7000c000 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	/* GEN2_I2C: unused */
+
+	/*
+	 * CAM_I2C: I2C3_SDA/SCL on MXM3 pin 201/203 (e.g. camera sensor on
+	 * carrier board)
+	 */
+	i2c@7000c500 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	/* DDC: I2C2_SDA/SCL on MXM3 pin 205/207 (e.g. display EDID) */
+	i2c@7000c700 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	/*
+	 * PWR_I2C: power I2C to audio codec, PMIC, temperature sensor and
+	 * touch screen controller
+	 */
+	i2c@7000d000 {
+		status = "okay";
+		clock-frequency = <100000>;
+
+		pmic: tps65911@2d {
+			compatible = "ti,tps65911";
+			reg = <0x2d>;
+
+			interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
+			#interrupt-cells = <2>;
+			interrupt-controller;
+
+			ti,system-power-controller;
+
+			#gpio-cells = <2>;
+			gpio-controller;
+
+			vcc1-supply = <&sys_3v3_reg>;
+			vcc2-supply = <&sys_3v3_reg>;
+			vcc3-supply = <&vio_reg>;
+			vcc4-supply = <&sys_3v3_reg>;
+			vcc5-supply = <&sys_3v3_reg>;
+			vcc6-supply = <&vio_reg>;
+			vcc7-supply = <&charge_pump_5v0_reg>;
+			vccio-supply = <&sys_3v3_reg>;
+
+			regulators {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				/* SW1: +V1.35_VDDIO_DDR */
+				vdd1_reg: vdd1 {
+					regulator-name = "vddio_ddr_1v35";
+					regulator-min-microvolt = <1350000>;
+					regulator-max-microvolt = <1350000>;
+					regulator-always-on;
+				};
+
+				/* SW2: +V1.05 */
+				vdd2_reg: vdd2 {
+					regulator-name =
+						"vdd_pexa,vdd_pexb,vdd_sata";
+					regulator-min-microvolt = <1050000>;
+					regulator-max-microvolt = <1050000>;
+				};
+
+				/* SW CTRL: +V1.0_VDD_CPU */
+				vddctrl_reg: vddctrl {
+					regulator-name = "vdd_cpu,vdd_sys";
+					regulator-min-microvolt = <1150000>;
+					regulator-max-microvolt = <1150000>;
+					regulator-always-on;
+				};
+
+				/* SWIO: +V1.8 */
+				vio_reg: vio {
+					regulator-name = "vdd_1v8_gen";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+				};
+
+				/* LDO1: unused */
+
+				/*
+				 * EN_+V3.3 switching via FET:
+				 * +V3.3_AUDIO_AVDD_S, +V3.3 and +V1.8_VDD_LAN
+				 * see also v3_3 fixed supply
+				 */
+				ldo2_reg: ldo2 {
+					regulator-name = "en_3v3";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+				};
+
+				/* +V1.2_CSI */
+				ldo3_reg: ldo3 {
+					regulator-name =
+						"avdd_dsi_csi,pwrdet_mipi";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+				};
+
+				/* +V1.2_VDD_RTC */
+				ldo4_reg: ldo4 {
+					regulator-name = "vdd_rtc";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+					regulator-always-on;
+				};
+
+				/*
+				 * +V2.8_AVDD_VDAC:
+				 * only required for analog RGB
+				 */
+				ldo5_reg: ldo5 {
+					regulator-name = "avdd_vdac";
+					regulator-min-microvolt = <2800000>;
+					regulator-max-microvolt = <2800000>;
+					regulator-always-on;
+				};
+
+				/*
+				 * +V1.05_AVDD_PLLE: avdd_plle should be 1.05V
+				 * but LDO6 can't set voltage in 50mV
+				 * granularity
+				 */
+				ldo6_reg: ldo6 {
+					regulator-name = "avdd_plle";
+					regulator-min-microvolt = <1100000>;
+					regulator-max-microvolt = <1100000>;
+				};
+
+				/* +V1.2_AVDD_PLL */
+				ldo7_reg: ldo7 {
+					regulator-name = "avdd_pll";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+					regulator-always-on;
+				};
+
+				/* +V1.0_VDD_DDR_HS */
+				ldo8_reg: ldo8 {
+					regulator-name = "vdd_ddr_hs";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+				};
+			};
+		};
+	};
+
+	/* SPI1: Apalis SPI1 */
+	spi@7000d400 {
+		status = "okay";
+		spi-max-frequency = <25000000>;
+	};
+
+	/* SPI4: CAN2 */
+	spi@7000da00 {
+		status = "okay";
+		spi-max-frequency = <25000000>;
+	};
+
+	/* SPI5: Apalis SPI2 */
+	spi@7000dc00 {
+		status = "okay";
+		spi-max-frequency = <25000000>;
+	};
+
+	/* SPI6: CAN1 */
+	spi@7000de00 {
+		status = "okay";
+		spi-max-frequency = <25000000>;
+	};
+
+	sdhci@78000000 {
+		status = "okay";
+		bus-width = <4>;
+		cd-gpios = <&gpio 229 1>; /* PCC5, SD1_CD# */
+	};
+
+	sdhci@78000400 {
+		status = "okay";
+		bus-width = <8>;
+		cd-gpios = <&gpio 171 1>; /* PV3, MMC1_CD# */
+	};
+
+	sdhci@78000600 {
+		status = "okay";
+		bus-width = <8>;
+		non-removable;
+	};
+
+	/* EHCI instance 0: USB1_DP/N -> USBO1_DP/N */
+	usb@7d000000 {
+		status = "okay";
+		dr_mode = "peripheral";
+		nvidia,vbus-gpio = <&gpio 157 0>;	/* PT5, USBO1_EN */
+	};
+
+	/* EHCI instance 1: USB2_DP/N -> USBH2_DP/N */
+	usb@7d004000 {
+		status = "okay";
+		nvidia,vbus-gpio = <&gpio 233 0>;	/* PDD1, USBH_EN */
+		phy_type = "utmi";
+	};
+
+	/* EHCI instance 2: USB3_DP/N -> USBH3_DP/N */
+	usb@7d008000 {
+		status = "okay";
+		nvidia,vbus-gpio = <&gpio 233 0>;	/* PDD1, USBH_EN */
+	};
+
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		sys_3v3_reg: regulator@100 {
+			compatible = "regulator-fixed";
+			reg = <100>;
+			regulator-name = "3v3";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+		};
+
+		charge_pump_5v0_reg: regulator@101 {
+			compatible = "regulator-fixed";
+			reg = <101>;
+			regulator-name = "5v0";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			regulator-always-on;
+		};
+	};
+};
diff --git a/arch/arm/include/asm/mach-types.h b/arch/arm/include/asm/mach-types.h
index 560924e..d4a447b 100644
--- a/arch/arm/include/asm/mach-types.h
+++ b/arch/arm/include/asm/mach-types.h
@@ -1107,6 +1107,7 @@ extern unsigned int __machine_arch_type;
 #define MACH_TYPE_ARMADILLO_800EVA     3863
 #define MACH_TYPE_KZM9G                4140
 #define MACH_TYPE_COLIBRI_T30          4493
+#define MACH_TYPE_APALIS_T30           4513
 
 #ifdef CONFIG_ARCH_EBSA110
 # ifdef machine_arch_type
@@ -14248,6 +14249,18 @@ extern unsigned int __machine_arch_type;
 # define machine_is_colibri_t30()	(0)
 #endif
 
+#ifdef CONFIG_MACH_APALIS_T30
+# ifdef machine_arch_type
+#  undef machine_arch_type
+#  define machine_arch_type	__machine_arch_type
+# else
+#  define machine_arch_type	MACH_TYPE_APALIS_T30
+# endif
+# define machine_is_apalis_t30()	(machine_arch_type == MACH_TYPE_APALIS_T30)
+#else
+# define machine_is_apalis_t30()	(0)
+#endif
+
 /*
  * These have not yet been registered
  */