diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/dts/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/dts/tegra210-p3450-0000.dts | 147 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/board2.c | 25 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra210/Kconfig | 7 |
4 files changed, 181 insertions, 1 deletions
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile index 9c593b2c98..820ee9733a 100644 --- a/arch/arm/dts/Makefile +++ b/arch/arm/dts/Makefile @@ -180,7 +180,8 @@ dtb-$(CONFIG_TEGRA) += tegra20-harmony.dtb \ tegra210-e2220-1170.dtb \ tegra210-p2371-0000.dtb \ tegra210-p2371-2180.dtb \ - tegra210-p2571.dtb + tegra210-p2571.dtb \ + tegra210-p3450-0000.dtb dtb-$(CONFIG_ARCH_MVEBU) += \ armada-3720-db.dtb \ diff --git a/arch/arm/dts/tegra210-p3450-0000.dts b/arch/arm/dts/tegra210-p3450-0000.dts new file mode 100644 index 0000000000..9ef744ac8b --- /dev/null +++ b/arch/arm/dts/tegra210-p3450-0000.dts @@ -0,0 +1,147 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2019-2020 NVIDIA Corporation <www.nvidia.com> + */ +/dts-v1/; + +#include "tegra210.dtsi" + +/ { + model = "NVIDIA Jetson Nano Developer Kit"; + compatible = "nvidia,p3450-0000", "nvidia,tegra210"; + + chosen { + stdout-path = &uarta; + }; + + aliases { + ethernet = "/pcie@1003000/pci@2,0/ethernet@0,0"; + i2c0 = "/i2c@7000d000"; + i2c2 = "/i2c@7000c400"; + i2c3 = "/i2c@7000c500"; + i2c4 = "/i2c@7000c700"; + mmc0 = "/sdhci@700b0600"; + mmc1 = "/sdhci@700b0000"; + spi0 = "/spi@70410000"; + usb0 = "/usb@7d000000"; + }; + + memory { + reg = <0x0 0x80000000 0x0 0xc0000000>; + }; + + pcie@1003000 { + status = "okay"; + + pci@1,0 { + status = "okay"; + }; + + pci@2,0 { + status = "okay"; + + ethernet@0,0 { + reg = <0x000000 0 0 0 0>; + local-mac-address = [ 00 00 00 00 00 00 ]; + }; + }; + }; + + serial@70006000 { + status = "okay"; + }; + + padctl@7009f000 { + pinctrl-0 = <&padctl_default>; + pinctrl-names = "default"; + + padctl_default: pinmux { + xusb { + nvidia,lanes = "otg-1", "otg-2"; + nvidia,function = "xusb"; + nvidia,iddq = <0>; + }; + + usb3 { + nvidia,lanes = "pcie-5", "pcie-6"; + nvidia,function = "usb3"; + nvidia,iddq = <0>; + }; + + pcie-x1 { + nvidia,lanes = "pcie-0"; + nvidia,function = "pcie-x1"; + nvidia,iddq = <0>; + }; + + pcie-x4 { + nvidia,lanes = "pcie-1", "pcie-2", + "pcie-3", "pcie-4"; + nvidia,function = "pcie-x4"; + nvidia,iddq = <0>; + }; + + sata { + nvidia,lanes = "sata-0"; + nvidia,function = "sata"; + nvidia,iddq = <0>; + }; + }; + }; + + sdhci@700b0000 { + status = "okay"; + cd-gpios = <&gpio TEGRA_GPIO(Z, 1) GPIO_ACTIVE_LOW>; + power-gpios = <&gpio TEGRA_GPIO(Z, 3) GPIO_ACTIVE_HIGH>; + bus-width = <4>; + }; + + sdhci@700b0600 { + status = "okay"; + bus-width = <8>; + non-removable; + }; + + i2c@7000c400 { + status = "okay"; + clock-frequency = <400000>; + }; + + i2c@7000c500 { + status = "okay"; + clock-frequency = <400000>; + }; + + i2c@7000c700 { + status = "okay"; + clock-frequency = <400000>; + }; + + i2c@7000d000 { + status = "okay"; + clock-frequency = <400000>; + }; + + spi@70410000 { + status = "okay"; + spi-max-frequency = <80000000>; + }; + + usb@7d000000 { + status = "okay"; + dr_mode = "peripheral"; + }; + + 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>; + }; + }; +}; diff --git a/arch/arm/mach-tegra/board2.c b/arch/arm/mach-tegra/board2.c index 787ff97420..224efc97c5 100644 --- a/arch/arm/mach-tegra/board2.c +++ b/arch/arm/mach-tegra/board2.c @@ -217,6 +217,31 @@ int board_early_init_f(void) arch_timer_init(); #endif +#if defined(CONFIG_DISABLE_SDMMC1_EARLY) + /* + * Turn off (reset/disable) SDMMC1 on Nano here, before GPIO INIT. + * We do this because earlier bootloaders have enabled power to + * SDMMC1 on Nano, and toggling power-gpio (PZ3) in pinmux_init() + * results in power being back-driven into the SD-card and SDMMC1 + * HW, which is 'bad' as per the HW team. + * + * From the HW team: "LDO2 from the PMIC has already been set to 3.3v in + * nvtboot/CBoot on Nano (for SD-card boot). So when U-Boot's GPIO_INIT + * table sets PZ3 to OUT0 as per the pinmux spreadsheet, it turns off + * the loadswitch. When PZ3 is 0 and not driving, essentially the SDCard + * voltage turns off. Since the SDCard voltage is no longer there, the + * SDMMC CLK/DAT lines are backdriving into what essentially is a + * powered-off SDCard, that's why the voltage drops from 3.3V to ~1.6V" + * + * Note that this can probably be removed when we change over to storing + * all BL components on QSPI on Nano, and U-Boot then becomes the first + * one to turn on SDMMC1 power. Another fix would be to have CBoot + * disable power/gate SDMMC1 off before handing off to U-Boot/kernel. + */ + reset_set_enable(PERIPH_ID_SDMMC1, 1); + clock_set_enable(PERIPH_ID_SDMMC1, 0); +#endif /* CONFIG_DISABLE_SDMMC1_EARLY */ + pinmux_init(); board_init_uart_f(); diff --git a/arch/arm/mach-tegra/tegra210/Kconfig b/arch/arm/mach-tegra/tegra210/Kconfig index 3637473051..97ed8e05f4 100644 --- a/arch/arm/mach-tegra/tegra210/Kconfig +++ b/arch/arm/mach-tegra/tegra210/Kconfig @@ -35,6 +35,12 @@ config TARGET_P2571 help P2571 is a P2530 married to a P1963 I/O board +config TARGET_P3450_0000 + bool "NVIDIA Jetson Nano Developer Kit" + select BOARD_LATE_INIT + help + P3450-0000 is a P3448 CPU board married to a P3449 I/O board. + endchoice config SYS_SOC @@ -44,5 +50,6 @@ source "board/nvidia/e2220-1170/Kconfig" source "board/nvidia/p2371-0000/Kconfig" source "board/nvidia/p2371-2180/Kconfig" source "board/nvidia/p2571/Kconfig" +source "board/nvidia/p3450-0000/Kconfig" endif |