ARM: tegra: Add support for TK1-SOM board from Colorado Engineering

The Colorado TK1 SOM is a small form factor board similar to the
Jetson TK1.  The main differences lie in the pinmux, and in that the
PCIe controller is set to use in 4lanes+1lane, rather than 2+2.

The pinmux header here was generated from a spreadsheet provided by
Colorado Engineering using the tegra-pinmux scripts.  The spreadsheet
was converted from v09 to v11 by me.

Signed-off-by: Peter Chubb <peter.chubb@data61.csiro.au>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

3 files changed, 490 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 7d52654384..756535b75e 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -57,6 +57,7 @@ dtb-$(CONFIG_TEGRA) += tegra20-harmony.dtb \
 	tegra114-dalmore.dtb \
 	tegra124-jetson-tk1.dtb \
 	tegra124-nyan-big.dtb \
+	tegra124-cei-tk1-som.dtb \
 	tegra124-venice2.dtb \
 	tegra186-p2771-0000-000.dtb \
 	tegra186-p2771-0000-500.dtb \
diff --git a/arch/arm/dts/tegra124-cei-tk1-som.dts b/arch/arm/dts/tegra124-cei-tk1-som.dts
new file mode 100644
index 0000000000..d22c0cabec
--- /dev/null
+++ b/arch/arm/dts/tegra124-cei-tk1-som.dts
@@ -0,0 +1,477 @@
+/dts-v1/;
+
+#include "tegra124.dtsi"
+
+/ {
+	model = "Colorado Engineering TK1-SOM";
+	compatible = "nvidia,cei-tk1-som", "nvidia,tegra124";
+
+	chosen {
+		stdout-path = &uartd;
+	};
+
+	aliases {
+		i2c0 = "/i2c@7000d000";
+		i2c1 = "/i2c@7000c000";
+		i2c2 = "/i2c@7000c400";
+		i2c3 = "/i2c@7000c500";
+		i2c4 = "/i2c@7000c700";
+		sdhci0 = "/sdhci@700b0600";
+		sdhci1 = "/sdhci@700b0400";
+		spi0 = "/spi@7000d400";
+		spi1 = "/spi@7000da00";
+		usb0 = "/usb@7d000000";
+		usb1 = "/usb@7d008000";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x80000000>;
+	};
+
+	pcie-controller@01003000 {
+		status = "okay";
+
+		avddio-pex-supply = <&vdd_1v05_run>;
+		dvddio-pex-supply = <&vdd_1v05_run>;
+		avdd-pex-pll-supply = <&vdd_1v05_run>;
+		hvdd-pex-supply = <&vdd_3v3_lp0>;
+		hvdd-pex-pll-e-supply = <&vdd_3v3_lp0>;
+		vddio-pex-ctl-supply = <&vdd_3v3_lp0>;
+		avdd-pll-erefe-supply = <&avdd_1v05_run>;
+
+		pci@1,0 {
+			status = "okay";
+			nvidia,num-lanes = <4>;
+		};
+
+		pci@2,0 {
+			status = "okay";
+		};
+	};
+
+	i2c@7000c000 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	i2c@7000c400 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	i2c@7000c500 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	i2c@7000c700 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	/* Expansion PWR_I2C_*, on-board components */
+	i2c@7000d000 {
+		status = "okay";
+		clock-frequency = <400000>;
+
+		pmic: pmic@40 {
+			compatible = "ams,as3722";
+			reg = <0x40>;
+			interrupts = <0 86 IRQ_TYPE_LEVEL_HIGH>;
+
+			ams,system-power-controller;
+
+			#interrupt-cells = <2>;
+			interrupt-controller;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&as3722_default>;
+
+			as3722_default: pinmux {
+				gpio0 {
+					pins = "gpio0";
+					function = "gpio";
+					bias-pull-down;
+				};
+
+				gpio1_2_4_7 {
+					pins = "gpio1", "gpio2", "gpio4", "gpio7";
+					function = "gpio";
+					bias-pull-up;
+				};
+
+				gpio3_5_6 {
+					pins = "gpio3", "gpio5", "gpio6";
+					bias-high-impedance;
+				};
+			};
+
+			regulators {
+				vsup-sd2-supply = <&vdd_5v0_sys>;
+				vsup-sd3-supply = <&vdd_5v0_sys>;
+				vsup-sd4-supply = <&vdd_5v0_sys>;
+				vsup-sd5-supply = <&vdd_5v0_sys>;
+				vin-ldo0-supply = <&vdd_1v35_lp0>;
+				vin-ldo1-6-supply = <&vdd_3v3_run>;
+				vin-ldo2-5-7-supply = <&vddio_1v8>;
+				vin-ldo3-4-supply = <&vdd_3v3_sys>;
+				vin-ldo9-10-supply = <&vdd_5v0_sys>;
+				vin-ldo11-supply = <&vdd_3v3_run>;
+
+				sd0 {
+					regulator-name = "+VDD_CPU_AP";
+					regulator-min-microvolt = <700000>;
+					regulator-max-microvolt = <1400000>;
+					regulator-min-microamp = <3500000>;
+					regulator-max-microamp = <3500000>;
+					regulator-always-on;
+					regulator-boot-on;
+					ams,ext-control = <2>;
+				};
+
+				sd1 {
+					regulator-name = "+VDD_CORE";
+					regulator-min-microvolt = <700000>;
+					regulator-max-microvolt = <1350000>;
+					regulator-min-microamp = <2500000>;
+					regulator-max-microamp = <2500000>;
+					regulator-always-on;
+					regulator-boot-on;
+					ams,ext-control = <1>;
+				};
+
+				vdd_1v35_lp0: sd2 {
+					regulator-name = "+1.35V_LP0(sd2)";
+					regulator-min-microvolt = <1350000>;
+					regulator-max-microvolt = <1350000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				sd3 {
+					regulator-name = "+1.35V_LP0(sd3)";
+					regulator-min-microvolt = <1350000>;
+					regulator-max-microvolt = <1350000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				vdd_1v05_run: sd4 {
+					regulator-name = "+1.05V_RUN";
+					regulator-min-microvolt = <1050000>;
+					regulator-max-microvolt = <1050000>;
+				};
+
+				vddio_1v8: sd5 {
+					regulator-name = "+1.8V_VDDIO";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-boot-on;
+					regulator-always-on;
+				};
+
+				vdd_gpu: sd6 {
+					regulator-name = "+VDD_GPU_AP";
+					regulator-min-microvolt = <650000>;
+					regulator-max-microvolt = <1200000>;
+					regulator-min-microamp = <3500000>;
+					regulator-max-microamp = <3500000>;
+					regulator-boot-on;
+					regulator-always-on;
+				};
+
+				avdd_1v05_run: ldo0 {
+					regulator-name = "+1.05V_RUN_AVDD";
+					regulator-min-microvolt = <1050000>;
+					regulator-max-microvolt = <1050000>;
+					regulator-boot-on;
+					regulator-always-on;
+					ams,ext-control = <1>;
+				};
+
+				ldo1 {
+					regulator-name = "+1.8V_RUN_CAM";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+				};
+
+				ldo2 {
+					regulator-name = "+1.2V_GEN_AVDD";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+					regulator-boot-on;
+					regulator-always-on;
+				};
+
+				ldo3 {
+					regulator-name = "+1.05V_LP0_VDD_RTC";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-boot-on;
+					regulator-always-on;
+					ams,enable-tracking;
+				};
+
+				ldo4 {
+					regulator-name = "+2.8V_RUN_CAM";
+					regulator-min-microvolt = <2800000>;
+					regulator-max-microvolt = <2800000>;
+				};
+
+				ldo5 {
+					regulator-name = "+1.2V_RUN_CAM_FRONT";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+				};
+
+				vddio_sdmmc3: ldo6 {
+					regulator-name = "+VDDIO_SDMMC3";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <3300000>;
+				};
+
+				ldo7 {
+					regulator-name = "+1.05V_RUN_CAM_REAR";
+					regulator-min-microvolt = <1050000>;
+					regulator-max-microvolt = <1050000>;
+				};
+
+				ldo9 {
+					regulator-name = "+3.3V_RUN_TOUCH";
+					regulator-min-microvolt = <2800000>;
+					regulator-max-microvolt = <2800000>;
+				};
+
+				ldo10 {
+					regulator-name = "+2.8V_RUN_CAM_AF";
+					regulator-min-microvolt = <2800000>;
+					regulator-max-microvolt = <2800000>;
+				};
+
+				ldo11 {
+					regulator-name = "+1.8V_RUN_VPP_FUSE";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+				};
+			};
+		};
+	};
+
+	i2c@7000d100 {
+		status = "okay";
+		clock-frequency = <400000>;
+	};
+
+	spi@7000d400 {
+		status = "okay";
+		spi-max-frequency = <25000000>;
+	};
+
+	spi@7000da00 {
+		status = "okay";
+		spi-max-frequency = <25000000>;
+	};
+
+	padctl@7009f000 {
+		pinctrl-0 = <&padctl_default>;
+		pinctrl-names = "default";
+
+		padctl_default: pinmux {
+			usb3 {
+				nvidia,lanes = "sata-0";
+				nvidia,function = "usb3";
+				nvidia,iddq = <0>;
+			};
+
+			pcie {
+				nvidia,lanes = "pcie-0", "pcie-1", "pcie-2", "pcie-3",
+					      "pcie-4";
+				nvidia,function = "pcie";
+				nvidia,iddq = <0>;
+			};
+
+		};
+	};
+
+	sdhci@700b0400 {
+		status = "okay";
+		cd-gpios = <&gpio TEGRA_GPIO(V, 2) GPIO_ACTIVE_LOW>;
+		power-gpios = <&gpio TEGRA_GPIO(R, 0) GPIO_ACTIVE_HIGH>;
+		wp-gpios = <&gpio TEGRA_GPIO(Q, 4) GPIO_ACTIVE_HIGH>;
+		bus-width = <4>;
+	};
+
+	sdhci@700b0600 {
+		status = "okay";
+		bus-width = <8>;
+	};
+
+	usb@7d000000 {
+		status = "okay";
+		dr_mode = "otg";
+		nvidia,vbus-gpio = <&gpio TEGRA_GPIO(N, 4) GPIO_ACTIVE_HIGH>;
+	};
+
+	usb@7d008000 {
+		status = "okay";
+		nvidia,vbus-gpio = <&gpio TEGRA_GPIO(N, 5) GPIO_ACTIVE_HIGH>;
+	};
+
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock@0 {
+			compatible = "fixed-clock";
+			reg = <0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		vdd_mux: regulator@0 {
+			compatible = "regulator-fixed";
+			reg = <0>;
+			regulator-name = "+VDD_MUX";
+			regulator-min-microvolt = <12000000>;
+			regulator-max-microvolt = <12000000>;
+			regulator-always-on;
+			regulator-boot-on;
+		};
+
+		vdd_5v0_sys: regulator@1 {
+			compatible = "regulator-fixed";
+			reg = <1>;
+			regulator-name = "+5V_SYS";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			regulator-always-on;
+			regulator-boot-on;
+			vin-supply = <&vdd_mux>;
+		};
+
+		vdd_3v3_sys: regulator@2 {
+			compatible = "regulator-fixed";
+			reg = <2>;
+			regulator-name = "+3.3V_SYS";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+			regulator-boot-on;
+			vin-supply = <&vdd_mux>;
+		};
+
+		vdd_3v3_run: regulator@3 {
+			compatible = "regulator-fixed";
+			reg = <3>;
+			regulator-name = "+3.3V_RUN";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+			regulator-boot-on;
+			gpio = <&pmic 1 GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			vin-supply = <&vdd_3v3_sys>;
+		};
+
+		vdd_3v3_hdmi: regulator@4 {
+			compatible = "regulator-fixed";
+			reg = <4>;
+			regulator-name = "+3.3V_AVDD_HDMI_AP_GATED";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			vin-supply = <&vdd_3v3_run>;
+		};
+
+		vdd_usb1_vbus: regulator@7 {
+			compatible = "regulator-fixed";
+			reg = <7>;
+			regulator-name = "+USB0_VBUS_SW";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio TEGRA_GPIO(N, 4) GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			gpio-open-drain;
+			vin-supply = <&vdd_5v0_sys>;
+		};
+
+		vdd_usb3_vbus: regulator@8 {
+			compatible = "regulator-fixed";
+			reg = <8>;
+			regulator-name = "+5V_USB_HS";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio TEGRA_GPIO(N, 5) GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			gpio-open-drain;
+			vin-supply = <&vdd_5v0_sys>;
+		};
+
+		vdd_3v3_lp0: regulator@10 {
+			compatible = "regulator-fixed";
+			reg = <10>;
+			regulator-name = "+3.3V_LP0";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+			regulator-boot-on;
+			gpio = <&pmic 2 GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			vin-supply = <&vdd_3v3_sys>;
+		};
+
+		vdd_hdmi_pll: regulator@11 {
+			compatible = "regulator-fixed";
+			reg = <11>;
+			regulator-name = "+1.05V_RUN_AVDD_HDMI_PLL";
+			regulator-min-microvolt = <1050000>;
+			regulator-max-microvolt = <1050000>;
+			gpio = <&gpio TEGRA_GPIO(H, 7) GPIO_ACTIVE_LOW>;
+			vin-supply = <&vdd_1v05_run>;
+		};
+
+		vdd_5v0_hdmi: regulator@12 {
+			compatible = "regulator-fixed";
+			reg = <12>;
+			regulator-name = "+5V_HDMI_CON";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio TEGRA_GPIO(K, 6) GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			vin-supply = <&vdd_5v0_sys>;
+		};
+
+		/* Molex power connector */
+		vdd_5v0_sata: regulator@13 {
+			compatible = "regulator-fixed";
+			reg = <13>;
+			regulator-name = "+5V_SATA";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			gpio = <&gpio TEGRA_GPIO(EE, 2) GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			vin-supply = <&vdd_5v0_sys>;
+		};
+
+		vdd_12v0_sata: regulator@14 {
+			compatible = "regulator-fixed";
+			reg = <14>;
+			regulator-name = "+12V_SATA";
+			regulator-min-microvolt = <12000000>;
+			regulator-max-microvolt = <12000000>;
+			gpio = <&gpio TEGRA_GPIO(EE, 2) GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			vin-supply = <&vdd_mux>;
+		};
+	};
+};
diff --git a/arch/arm/mach-tegra/tegra124/Kconfig b/arch/arm/mach-tegra/tegra124/Kconfig
index f3324ffaa8..9e21e3099d 100644
--- a/arch/arm/mach-tegra/tegra124/Kconfig
+++ b/arch/arm/mach-tegra/tegra124/Kconfig
@@ -9,6 +9,17 @@ config TARGET_JETSON_TK1
 	select CPU_V7_HAS_NONSEC if !SPL_BUILD
 	select CPU_V7_HAS_VIRT if !SPL_BUILD
 
+config TARGET_CEI_TK1_SOM
+	bool "Colorado Engineering Inc Tegra124 TK1-som board"
+	select CPU_V7_HAS_NONSEC if !SPL_BUILD
+	select CPU_V7_HAS_VIRT if !SPL_BUILD
+	help
+	  The Colorado Engineering Tegra TK1-SOM is a very compact
+	  (51mmx58mm) board that is functionally almost the same as
+	  the Jetson TK1.  The main differences are in which balls on
+	  the SoC are assigned to which functions, and the PCIEe
+	  configuration.
+
 config TARGET_NYAN_BIG
 	bool "Google/NVIDIA Nyan-big Chromebook"
 	help
@@ -26,6 +37,7 @@ endchoice
 config SYS_SOC
 	default "tegra124"
 
+source "board/cei/cei-tk1-som/Kconfig"
 source "board/nvidia/jetson-tk1/Kconfig"
 source "board/nvidia/nyan-big/Kconfig"
 source "board/nvidia/venice2/Kconfig"