Introduction

• The Kernel version 4.12.0-rc1 was based on Ubuntu mainline build to have a better experience.
• Mainline build
• Unlike UP board, this kernel should work for other CherryTrail tablets and laptops, because LattePanda focused on the Atmel MCU and developed it.
• This repository could be cooperative. Any comments and suggestions will be appreciated.

z8350 based platform

• Enivorment

  • Testing OS on LattePanda(4G/64G):
  • Ubuntu 16.04.2 64Bit LTS
  • GCC version 5.4.0 20160609

• Patch:

  • WiFi (rtl8723bs directory and in Tree)
  • Bluetooth (rtl8723bs_bt directory)
  • Audio (ucm directory)
  • PWM (in Tree)

• BIOS:

  • South Bridge -> Chipset -> SCC Configuration
    • SCC SDIO Support -> PCI Mode

• If you want to build your own kernel step-by-step, there are steps as follows:

---

• 1. Install Ubuntu 16.04.2 ISO from Ubuntu official website, make sure that installation is only in UEFI boot mode.
• 2. modify GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=1" to /etc/default/grub, it will prevent system freezing.
• 3. In the terminal, sudo apt-get update
• 4. sudo apt-get dist-upgrade
• 5. sudo apt-get install git
• 6. git clone this repository.
• 7. cd in
• 8. make mrproper
• 9. make upboard_defconfig
• 10. make -j4
• 11. sudo make modules_install
• 12. sudo make firmware_install
• 13. sudo make headers_install
• 14. sudo make install
• 15. patch UCM configuration file to /usr/share/alsa/ucm/chtrt5645
• 16. build rtl8723bs_bt dirver
• 17. move binary to /usr/sbin
• 18. add systemd service rtl8723bsbt.service
• 19. link BT service for all users
• 20. patch BT and WiFi firmware to /lib/firmware

• p.s.

• If you see warnings as follows:

  • W: Possible missing firmware /lib/firmware/i915/kbl_dmc_ver1_01.bin for module i915

  • W: Possible missing firmware /lib/firmware/i915/kbl_guc_ver9_14.bin for module i915

  • W: Possible missing firmware /lib/firmware/i915/bxt_guc_ver8_7.bin for module i915

  • Download and install firmwares, but assume that CherryTrail is not involved in the firmwares.

  • Intel firmwares

• 21. reboot and play. You could edit your grub menu to roll back original kernel.

---

• If you want to install the kernel and apply all steps, there are steps as follows:

---

• z8350 directory: (split files)
• Prebuilt Linux kernel, modules and steps by a DEB file, it is easy to install.
• 1. merge the split files to get a DEB file, cd in package directory.
• 2. cat lattepanda-z8350-64-mainline_4.12.0-rc1-1_amd64.deb.parta* > lattepanda-z8350-64-mainline_4.12.0-rc1-1_amd64.deb
• 3. sudo dpkg -i lattepanda-64-mainline_4.12.0-rc1-1_amd64.deb
• 4. reboot your LattePanda to take effect.

---

z8300 based platform

• Enivorment

  • Testing OS on LattePanda(4G/64G):
  • Ubuntu 16.04.2 64Bit LTS
  • GCC version 5.4.0 20160609

• Patch:

  • (BT ID is BCM2E95)
  • WiFi (bcm43340 directory and in Tree)
  • Bluetooth (bcm34430_bt directory and in Tree)
  • Audio (ucm directory)
  • PWM (in Tree)

• If you want to build your own kernel step-by-step, there are steps as follows:

---

• 1. Install Ubuntu 16.04.2 ISO from Ubuntu official website, make sure that installation is only in UEFI boot mode.
• 2. modify GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=1" to /etc/default/grub, it will prevent system freezing.
• 3. In the terminal, sudo apt-get update
• 4. sudo apt-get dist-upgrade
• 5. sudo apt-get install git
• 6. git clone this repository.
• 7. cd in
• 8. make mrproper
• 9. make upboard_defconfig
• 10. make -j4
• 11. sudo make modules_install
• 12. sudo make firmware_install
• 13. sudo make headers_install
• 14. sudo make install
• 15. patch UCM configuration file to /usr/share/alsa/ucm/chtrt5645
• 16. add systemd service bcm43340bt.service
• 17. link BT service for all users
• 18. patch BT and WiFi firmware to /lib/firmware

• p.s.

• If you see warnings as follows:

  • W: Possible missing firmware /lib/firmware/i915/kbl_dmc_ver1_01.bin for module i915

  • W: Possible missing firmware /lib/firmware/i915/kbl_guc_ver9_14.bin for module i915

  • W: Possible missing firmware /lib/firmware/i915/bxt_guc_ver8_7.bin for module i915

  • Download and install firmwares, but assume that CherryTrail is not involved in the firmwares.

  • Intel firmwares

• 19. reboot and play. You could edit your grub menu to roll back original kernel.

---

• If you want to install the kernel and apply all steps, there are steps as follows:

---

• z8300 directory: (split files)
• Prebuilt Linux kernel, modules and steps by a DEB file, it is easy to install.
• 1. merge the split files to get a DEB file, cd in package directory.
• 2. cat lattepanda-z8300-64-mainline_4.12.0-rc1-1_amd64.deb.parta* > lattepanda-z8300-64-mainline_4.12.0-rc1-1_amd64.deb
• 3. sudo dpkg -i lattepanda-z8300-64-mainline_4.12.0-rc1-1_amd64.deb
• 4. reboot your LattePanda to take effect.

---

For Debian 8 (Jessie)

• Please refer to Debian 8 installation