ARM: tegra: Work safely with 256 MB Colibri-T20 modules

Colibri-T20 can come in 256 MB RAM (with 512 MB NAND) or 512 MB RAM
(with 1024 MB NAND) flavors.  Both of them will use the same DTSI
expecting the bootloader to do the fixup of /memory node.  However in
case it does not happen, let's stay on safe side by limiting the memory
to 256 MB for both versions of Colibri-T20.

Rename to remove the unnecessary memory size from the device tree file
name.  While at it, also follow the typical Toradex SoC, module, carrier
board hierarchy.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Tested-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 545 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/tegra20-colibri.dtsi b/arch/arm/boot/dts/tegra20-colibri.dtsi
new file mode 100644
index 000000000000..dc06b23183e1
--- /dev/null
+++ b/arch/arm/boot/dts/tegra20-colibri.dtsi
@@ -0,0 +1,545 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "tegra20.dtsi"
+
+/ {
+	model = "Toradex Colibri T20 256/512 MB";
+	compatible = "toradex,colibri_t20-512", "nvidia,tegra20";
+
+	aliases {
+		rtc0 = "/i2c@7000d000/tps6586x@34";
+		rtc1 = "/rtc@7000e000";
+	};
+
+	memory@0 {
+		/*
+		 * Set memory to 256 MB to be safe as this could be used on
+		 * 256 or 512 MB module. It is expected from bootloader
+		 * to fix this up for 512 MB version.
+		 */
+		reg = <0x00000000 0x10000000>;
+	};
+
+	host1x@50000000 {
+		hdmi@54280000 {
+			vdd-supply = <&hdmi_vdd_reg>;
+			pll-supply = <&hdmi_pll_reg>;
+
+			nvidia,ddc-i2c-bus = <&i2c_ddc>;
+			nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
+				GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	pinmux@70000014 {
+		pinctrl-names = "default";
+		pinctrl-0 = <&state_default>;
+
+		state_default: pinmux {
+			audio_refclk {
+				nvidia,pins = "cdev1";
+				nvidia,function = "plla_out";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			crt {
+				nvidia,pins = "crtp";
+				nvidia,function = "crt";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			dap3 {
+				nvidia,pins = "dap3";
+				nvidia,function = "dap3";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			displaya {
+				nvidia,pins = "ld0", "ld1", "ld2", "ld3",
+					"ld4", "ld5", "ld6", "ld7", "ld8",
+					"ld9", "ld10", "ld11", "ld12", "ld13",
+					"ld14", "ld15", "ld16", "ld17",
+					"lhs", "lpw0", "lpw2", "lsc0",
+					"lsc1", "lsck", "lsda", "lspi", "lvs";
+				nvidia,function = "displaya";
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			gpio_dte {
+				nvidia,pins = "dte";
+				nvidia,function = "rsvd1";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			gpio_gmi {
+				nvidia,pins = "ata", "atc", "atd", "ate",
+					"dap1", "dap2", "dap4", "gpu", "irrx",
+					"irtx", "spia", "spib", "spic";
+				nvidia,function = "gmi";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			gpio_pta {
+				nvidia,pins = "pta";
+				nvidia,function = "rsvd4";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			gpio_uac {
+				nvidia,pins = "uac";
+				nvidia,function = "rsvd2";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			hdint {
+				nvidia,pins = "hdint";
+				nvidia,function = "hdmi";
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			i2c1 {
+				nvidia,pins = "rm";
+				nvidia,function = "i2c1";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			i2c3 {
+				nvidia,pins = "dtf";
+				nvidia,function = "i2c3";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			i2cddc {
+				nvidia,pins = "ddc";
+				nvidia,function = "i2c2";
+				nvidia,pull = <TEGRA_PIN_PULL_UP>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			i2cp {
+				nvidia,pins = "i2cp";
+				nvidia,function = "i2cp";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			irda {
+				nvidia,pins = "uad";
+				nvidia,function = "irda";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			nand {
+				nvidia,pins = "kbca", "kbcc", "kbcd",
+					"kbce", "kbcf";
+				nvidia,function = "nand";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			owc {
+				nvidia,pins = "owc";
+				nvidia,function = "owr";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			pmc {
+				nvidia,pins = "pmc";
+				nvidia,function = "pwr_on";
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			pwm {
+				nvidia,pins = "sdb", "sdc", "sdd";
+				nvidia,function = "pwm";
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			sdio4 {
+				nvidia,pins = "atb", "gma", "gme";
+				nvidia,function = "sdio4";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			spi1 {
+				nvidia,pins = "spid", "spie", "spif";
+				nvidia,function = "spi1";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			spi4 {
+				nvidia,pins = "slxa", "slxc", "slxd", "slxk";
+				nvidia,function = "spi4";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			uarta {
+				nvidia,pins = "sdio1";
+				nvidia,function = "uarta";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			uartd {
+				nvidia,pins = "gmc";
+				nvidia,function = "uartd";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			ulpi {
+				nvidia,pins = "uaa", "uab", "uda";
+				nvidia,function = "ulpi";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			ulpi_refclk {
+				nvidia,pins = "cdev2";
+				nvidia,function = "pllp_out4";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			usb_gpio {
+				nvidia,pins = "spig", "spih";
+				nvidia,function = "spi2_alt";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+			vi {
+				nvidia,pins = "dta", "dtb", "dtc", "dtd";
+				nvidia,function = "vi";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+			vi_sc {
+				nvidia,pins = "csus";
+				nvidia,function = "vi_sensor_clk";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+			};
+		};
+	};
+
+	ac97: ac97@70002000 {
+		status = "okay";
+		nvidia,codec-reset-gpio = <&gpio TEGRA_GPIO(V, 0)
+			GPIO_ACTIVE_HIGH>;
+		nvidia,codec-sync-gpio = <&gpio TEGRA_GPIO(P, 0)
+			GPIO_ACTIVE_HIGH>;
+	};
+
+	/*
+	 * GEN1_I2C: I2C_SDA/SCL on SODIMM pin 194/196 (e.g. RTC on carrier
+	 * board)
+	 */
+	i2c@7000c000 {
+		clock-frequency = <400000>;
+	};
+
+	/* DDC_SCL/SDA on X3 pin 15/16 (e.g. display EDID) */
+	i2c_ddc: i2c@7000c400 {
+		clock-frequency = <10000>;
+	};
+
+	/* GEN2_I2C: unused */
+
+	/* CAM/GEN3_I2C: used as EXT_IO1/2 GPIOs on SODIMM pin 133/127 */
+
+	/* PWR_I2C: power I2C to PMIC and temperature sensor (On-module) */
+	i2c@7000d000 {
+		status = "okay";
+		clock-frequency = <100000>;
+
+		pmic: tps6586x@34 {
+			compatible = "ti,tps6586x";
+			reg = <0x34>;
+			interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
+
+			ti,system-power-controller;
+
+			#gpio-cells = <2>;
+			gpio-controller;
+
+			sys-supply = <&vdd_3v3_reg>;
+			vin-sm0-supply = <&sys_reg>;
+			vin-sm1-supply = <&sys_reg>;
+			vin-sm2-supply = <&sys_reg>;
+			vinldo01-supply = <&sm2_reg>;
+			vinldo23-supply = <&vdd_3v3_reg>;
+			vinldo4-supply = <&vdd_3v3_reg>;
+			vinldo678-supply = <&vdd_3v3_reg>;
+			vinldo9-supply = <&vdd_3v3_reg>;
+
+			regulators {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				sys_reg: regulator@0 {
+					reg = <0>;
+					regulator-compatible = "sys";
+					regulator-name = "vdd_sys";
+					regulator-always-on;
+				};
+
+				regulator@1 {
+					reg = <1>;
+					regulator-compatible = "sm0";
+					regulator-name = "vdd_sm0,vdd_core";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+					regulator-always-on;
+				};
+
+				regulator@2 {
+					reg = <2>;
+					regulator-compatible = "sm1";
+					regulator-name = "vdd_sm1,vdd_cpu";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+				};
+
+				sm2_reg: regulator@3 {
+					reg = <3>;
+					regulator-compatible = "sm2";
+					regulator-name = "vdd_sm2,vin_ldo*";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+				};
+
+				/* LDO0 is not connected to anything */
+
+				regulator@5 {
+					reg = <5>;
+					regulator-compatible = "ldo1";
+					regulator-name = "vdd_ldo1,avdd_pll*";
+					regulator-min-microvolt = <1100000>;
+					regulator-max-microvolt = <1100000>;
+					regulator-always-on;
+				};
+
+				regulator@6 {
+					reg = <6>;
+					regulator-compatible = "ldo2";
+					regulator-name = "vdd_ldo2,vdd_rtc";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+				};
+
+				/* LDO3 is not connected to anything */
+
+				regulator@8 {
+					reg = <8>;
+					regulator-compatible = "ldo4";
+					regulator-name = "vdd_ldo4,avdd_osc,vddio_sys";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+				};
+
+				ldo5_reg: regulator@9 {
+					reg = <9>;
+					regulator-compatible = "ldo5";
+					regulator-name = "vdd_ldo5,vdd_fuse";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+				};
+
+				regulator@10 {
+					reg = <10>;
+					regulator-compatible = "ldo6";
+					regulator-name = "vdd_ldo6,avdd_vdac,vddio_vi,vddio_cam";
+					regulator-min-microvolt = <2850000>;
+					regulator-max-microvolt = <2850000>;
+				};
+
+				hdmi_vdd_reg: regulator@11 {
+					reg = <11>;
+					regulator-compatible = "ldo7";
+					regulator-name = "vdd_ldo7,avdd_hdmi";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+				};
+
+				hdmi_pll_reg: regulator@12 {
+					reg = <12>;
+					regulator-compatible = "ldo8";
+					regulator-name = "vdd_ldo8,avdd_hdmi_pll";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+				};
+
+				regulator@13 {
+					reg = <13>;
+					regulator-compatible = "ldo9";
+					regulator-name = "vdd_ldo9,avdd_2v85,vdd_ddr_rx";
+					regulator-min-microvolt = <2850000>;
+					regulator-max-microvolt = <2850000>;
+					regulator-always-on;
+				};
+
+				regulator@14 {
+					reg = <14>;
+					regulator-compatible = "ldo_rtc";
+					regulator-name = "vdd_rtc_out,vdd_cell";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+				};
+			};
+		};
+
+		temperature-sensor@4c {
+			compatible = "national,lm95245";
+			reg = <0x4c>;
+		};
+	};
+
+	pmc@7000e400 {
+		nvidia,suspend-mode = <1>;
+		nvidia,cpu-pwr-good-time = <5000>;
+		nvidia,cpu-pwr-off-time = <5000>;
+		nvidia,core-pwr-good-time = <3845 3845>;
+		nvidia,core-pwr-off-time = <3875>;
+		nvidia,sys-clock-req-active-high;
+	};
+
+	memory-controller@7000f400 {
+		emc-table@83250 {
+			reg = <83250>;
+			compatible = "nvidia,tegra20-emc-table";
+			clock-frequency = <83250>;
+			nvidia,emc-registers =   <0x00000005 0x00000011
+				0x00000004 0x00000002 0x00000004 0x00000004
+				0x00000001 0x0000000a 0x00000002 0x00000002
+				0x00000001 0x00000001 0x00000003 0x00000004
+				0x00000003 0x00000009 0x0000000c 0x0000025f
+				0x00000000 0x00000003 0x00000003 0x00000002
+				0x00000002 0x00000001 0x00000008 0x000000c8
+				0x00000003 0x00000005 0x00000003 0x0000000c
+				0x00000002 0x00000000 0x00000000 0x00000002
+				0x00000000 0x00000000 0x00000083 0x00520006
+				0x00000010 0x00000008 0x00000000 0x00000000
+				0x00000000 0x00000000 0x00000000 0x00000000>;
+		};
+		emc-table@133200 {
+			reg = <133200>;
+			compatible = "nvidia,tegra20-emc-table";
+			clock-frequency = <133200>;
+			nvidia,emc-registers =   <0x00000008 0x00000019
+				0x00000006 0x00000002 0x00000004 0x00000004
+				0x00000001 0x0000000a 0x00000002 0x00000002
+				0x00000002 0x00000001 0x00000003 0x00000004
+				0x00000003 0x00000009 0x0000000c 0x0000039f
+				0x00000000 0x00000003 0x00000003 0x00000002
+				0x00000002 0x00000001 0x00000008 0x000000c8
+				0x00000003 0x00000007 0x00000003 0x0000000c
+				0x00000002 0x00000000 0x00000000 0x00000002
+				0x00000000 0x00000000 0x00000083 0x00510006
+				0x00000010 0x00000008 0x00000000 0x00000000
+				0x00000000 0x00000000 0x00000000 0x00000000>;
+		};
+		emc-table@166500 {
+			reg = <166500>;
+			compatible = "nvidia,tegra20-emc-table";
+			clock-frequency = <166500>;
+			nvidia,emc-registers =   <0x0000000a 0x00000021
+				0x00000008 0x00000003 0x00000004 0x00000004
+				0x00000002 0x0000000a 0x00000003 0x00000003
+				0x00000002 0x00000001 0x00000003 0x00000004
+				0x00000003 0x00000009 0x0000000c 0x000004df
+				0x00000000 0x00000003 0x00000003 0x00000003
+				0x00000003 0x00000001 0x00000009 0x000000c8
+				0x00000003 0x00000009 0x00000004 0x0000000c
+				0x00000002 0x00000000 0x00000000 0x00000002
+				0x00000000 0x00000000 0x00000083 0x004f0006
+				0x00000010 0x00000008 0x00000000 0x00000000
+				0x00000000 0x00000000 0x00000000 0x00000000>;
+		};
+		emc-table@333000 {
+			reg = <333000>;
+			compatible = "nvidia,tegra20-emc-table";
+			clock-frequency = <333000>;
+			nvidia,emc-registers =   <0x00000014 0x00000041
+				0x0000000f 0x00000005 0x00000004 0x00000005
+				0x00000003 0x0000000a 0x00000005 0x00000005
+				0x00000004 0x00000001 0x00000003 0x00000004
+				0x00000003 0x00000009 0x0000000c 0x000009ff
+				0x00000000 0x00000003 0x00000003 0x00000005
+				0x00000005 0x00000001 0x0000000e 0x000000c8
+				0x00000003 0x00000011 0x00000006 0x0000000c
+				0x00000002 0x00000000 0x00000000 0x00000002
+				0x00000000 0x00000000 0x00000083 0x00380006
+				0x00000010 0x00000008 0x00000000 0x00000000
+				0x00000000 0x00000000 0x00000000 0x00000000>;
+		};
+	};
+
+	usb@c5004000 {
+		status = "okay";
+		nvidia,phy-reset-gpio = <&gpio TEGRA_GPIO(V, 1)
+			GPIO_ACTIVE_LOW>;
+	};
+
+	usb-phy@c5004000 {
+		status = "okay";
+		nvidia,phy-reset-gpio = <&gpio TEGRA_GPIO(V, 1)
+			GPIO_ACTIVE_LOW>;
+	};
+
+	sdhci@c8000600 {
+		cd-gpios = <&gpio TEGRA_GPIO(C, 7) GPIO_ACTIVE_LOW>;
+	};
+
+	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_3v3_reg: regulator@100 {
+			compatible = "regulator-fixed";
+			reg = <100>;
+			regulator-name = "vdd_3v3";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+		};
+
+		regulator@101 {
+			compatible = "regulator-fixed";
+			reg = <101>;
+			regulator-name = "internal_usb";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			enable-active-high;
+			regulator-boot-on;
+			regulator-always-on;
+			gpio = <&gpio TEGRA_GPIO(BB, 1) GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	sound {
+		compatible = "nvidia,tegra-audio-wm9712-colibri_t20",
+			         "nvidia,tegra-audio-wm9712";
+		nvidia,model = "Colibri T20 AC97 Audio";
+
+		nvidia,audio-routing =
+			"Headphone", "HPOUTL",
+			"Headphone", "HPOUTR",
+			"LineIn", "LINEINL",
+			"LineIn", "LINEINR",
+			"Mic", "MIC1";
+
+		nvidia,ac97-controller = <&ac97>;
+
+		clocks = <&tegra_car TEGRA20_CLK_PLL_A>,
+			 <&tegra_car TEGRA20_CLK_PLL_A_OUT0>,
+			 <&tegra_car TEGRA20_CLK_CDEV1>;
+		clock-names = "pll_a", "pll_a_out0", "mclk";
+	};
+};