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https://github.com/InES-HPMM/linux-l4t-4.4

Linux kernel 4.4 forked from Nvidia Linux4Tegra for TX1 and TX2. Supports L4T 28.1 and 28.2.1
https://github.com/InES-HPMM/linux-l4t-4.4

csi hdmi hdmi2csi kernel linux linux4tegra nvidia tx1 tx2

Last synced: 4 months ago
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Linux kernel 4.4 forked from Nvidia Linux4Tegra for TX1 and TX2. Supports L4T 28.1 and 28.2.1

Host: GitHub
URL: https://github.com/InES-HPMM/linux-l4t-4.4
Owner: InES-HPMM
Created: 2017-10-09T11:17:24.000Z (almost 7 years ago)
Default Branch: hdmi2csi/l4t-r28.1
Last Pushed: 2019-09-26T13:23:29.000Z (almost 5 years ago)
Last Synced: 2024-01-18T08:10:23.287Z (6 months ago)
Topics: csi, hdmi, hdmi2csi, kernel, linux, linux4tegra, nvidia, tx1, tx2
Homepage:
Size: 13.7 KB
Stars: 31
Watchers: 14
Forks: 24
Open Issues: 0
Metadata Files:
- Readme: README.md

Lists

awesome-stars - InES-HPMM/linux-l4t-4.4 - Linux kernel 4.4 forked from Nvidia Linux4Tegra for TX1 and TX2. Supports L4T 28.1 and 28.2.1 (Others)

README

# [Linux4Tegra 32.2.1 Driver Update for TX2](https://github.com/InES-HPMM/linux-l4t-4.9.git)
change to linux-l4t-4.9 repository: https://github.com/InES-HPMM/linux-l4t-4.9.git

# [Linux4Tegra 28.2.1 Driver Update](https://github.com/InES-HPMM/linux-l4t-4.4/tree/hdmi2csi/l4t-r28.2.1)
change to branch hdmi2csi/l4t-r28.2.1: https://github.com/InES-HPMM/linux-l4t-4.4/tree/hdmi2csi/l4t-r28.2.1

# linux-l4t-4.4

This is the top-level repository for TX1/TX2 **kernel** and **Device Tree**. The Nvidia Source URLs can be found in the *README.md* files of the submodules.

## Clone with Submodules

Use the following command to clone this repository and its submodules:

```shell
$ git clone --recursive
```

## Already Cloned but no Submodules?

```shell
$ git submodule update --init --recursive
```

## Building the Kernel

**NOTE: This is the short version for advanced users. Step-by-step instructions can be found in the
[Custom Kernel Compilation Wiki](https://github.com/InES-HPMM/linux-l4t-4.4/wiki/customKernelCompilation).**

```shell
# Go to the kernel-4.4 directory
$ cd kernel/kernel-4.4

# Set the environment variables
$ export ARCH=arm64
$ export CROSS_COMPILE=

# TX1
$ make tegra21_hdmi2csi_defconfig
# TX2
$ make tegra18_hdmi2csi_defconfig

# Build the kernel, modules and dtb files
$ make -j8
```

## Device Tree

The Device Tree source files of the Linux kernel are located in the *hardware* directory:

**TX1**:

`hardware/nvidia/platform/t210/jetson/kernel-dts/`

**TX2**:

`hardware/nvidia/platform/t18x/quill/kernel-dts/`

For compiling the Device Trees, go to the kernel directory and run make:

```shell
$ cd kernel/kernel-4.4
$ make dtbs
```

### Update Device-Tree

**CAUTION**:

Do **not** use `extlinux.conf` to define the generated `.dtb` file because *u-boot* makes changes on-the-fly to the Device Tree Blob. Otherwise, the screen might flicker or the kernel stops during the boot process.

Instead, use the flash script `flash.sh` from `jetpack` (or alternatively the `Jetson TX1/TX2 64-bit Driver Package`, see [Custom Kernel Compilation Wiki](https://github.com/InES-HPMM/linux-l4t-4.4/wiki/customKernelCompilation)):

* [Extlinux: Jetson DTB](https://elinux.org/Jetson/TX2_DTB)

**TX1**:
1. Replace the existing `.dtb` file: `JetPack/3.1/64_TX1/Linux_for_Tegra_64_tx1/kernel/dtb/tegra210-jetson-tx1-p2597-2180-a01-devkit.dtb` with `tegra210-jetson-tx1-p2597-2180-a01-devkit-hdmi2csi.dtb`
2. Flash the DTB partition: `$ sudo ./flash.sh -r -k DTB jetson-tx1 mmcblk0p1`

**TX2**:
1. Replace the existing `.dtb` file: `JetPack/3.1/64_TX2/Linux_for_Tegra_64_tx2/kernel/dtb/tegra186-quill-p3310-1000-c03-00-base.dtb` with `tegra186-quill-p3310-1000-c03-00-base-hdmi2csi.dtb`
2. Flash the DTB partition: `$ sudo ./flash.sh -r -k kernel-dtb jetson-tx2 mmcblk0p1`