Yocto Project released Rocko

Yocto Project released its new version named Rocko (v2.4).

Find the release note: https://www.yoctoproject.org/downloads/core/rocko24

Wayland is coming

Me presenting a lightning talk at Embedded Recipes in Paris (26-09-2017).
A short talk about the choice of Wayland on embedded devices.

How to promote Wayland for embedded devices and prove it works fine for common operations?
I just decided to present my slides on an embedded devices : RiotBoard (imx6 solo).

On the software side, the system was built using OpenEmbedded (master branches).
Board BSP can be find here https://github.com/aragua/meta-arm-board.

I chose to run only open source and mainline software:
- mainline u-boot 2017.09
- mainline linux 4.13 with etnaviv driver
- Wayland 1.14.0
- Weston 3.0.0
- Mesa 2.17.0

I also chose to disable X support to run only Wayland and all apps as Wayland clients.
Wayland and weston recipes have been submitted to openembedded-core and be available soon.

Find slides pdf here.

Building Weston image with Yocto for Raspberry pi

This article aims at describing how to setup a weston image for raspberry pi3.
1. Start by cloning poky:

/ $ git clone git://git.yoctoproject.org/poky.git -b morty

2. Then clone layers

/ $ cd poky

/poky $ git clone git://git.yoctoproject.org/meta-raspberrypi -b morty

/poky $ git clone git://git.openembedded.org/meta-openembedded -b morty

3. setup a new environment  for your build

/poky $ source oe-init-build-env rpi3-build

/poky/rpi3-build $

4. Add the 2 repos to the layers config

/poky/rpi3-build $ cat conf/bblayers.conf

....

BBLAYERS ?= " \

  /home/geh0003/sdb1/morty/meta \

  /home/geh0003/sdb1/morty/meta-poky \

  /home/geh0003/sdb1/morty/meta-yocto-bsp \

  /home/geh0003/sdb1/morty/meta-raspberrypi \

  /home/geh0003/sdb1/morty/meta-openembedded/meta-oe \

  /home/geh0003/sdb1/morty/meta-openembedded/meta-multimedia \

  "

5. Add the following to your local.conf

/poky/rpi3-build $ cat conf/local.conf

...

MACHINE ?= "raspberrypi3"

# IMHO this should be in raspberrypi3.conf

MACHINE_FEATURES += "vc4graphics"

# Remove black border

DISABLE_OVERSCAN = "1"

# Heavily recommended for Wayland/Weston.

DISPMANX_OFFLINE = "1"

GPU_MEM = "128"

...

6. Start the build

/poky/rpi3-build $ bitbake core-image-weston -k

7. Take a coffee or a beer 

(or both this takes some time)

8. If no errors =D, copy to sdcard ...

/poky/rpi3-build $ sudo dd if=tmp/deploy/images/raspberrypi3/core-image-weston-raspberrypi3.rpi-sdimg of=/dev/mmcblk0

540672+0 records in

540672+0 records out

276824064 bytes (277 MB, 264 MiB) copied, 62.256 s, 4.4 MB/s

/poky/rpi3-build $ sync

/poky/rpi3-build $ 

9. ... and enjoy

2016 : Linux kernel contribution

After my first 6 months as a Collaborans, this is my contribution to the Linux kernel (as author or submitter):

Linux stable 4.8:

0593d4612146dc16ff6bd23423bdd434dd7b8c7b : sgtl5000: add Lineout volume control

Linux 4.9:

d04eba90998fdfeb09b7c655fa894207fe175042  : ARM: dts: imx53: Add DMA configuration for UART
2a8e583c09c841744a6aa17d7247bc4fd5c6dfbf : ARM: dts: imx53: Add IPU nodes for csi
1c06bde643d0a0b17f117539e961300cad69aad3 : Allowing UART DMA to be configured on i.MX53
e5e8960236dbff4b49eac1ec7f47b1c912531b62 : serial: imx: Replace dmaengine old API
377d6479d298339888c5d6fb460d3275e1763f8f : clk: imx53: Add clocks configuration

Linux 4.10-rc2:

05ec0e4501f7f05ef610070294fcc806ccbbb981 : drm/panel: simple: Add NVD9128 as a simple panel
144235ea752b4d56d66fe03bb6b7fae7e0032404 : spi: spidev: Add device to spidev device tree compatibility list
d13631bb15cebe8eba50777cb96e2223e5485c23 : usb: chipidea: imx: configure imx for ULPI phy
3be3251db0887f721f9c110e1966900922fc4ff4 : usb: chipidea: imx: Disable internal 60Mhz clock with ULPI PHY