First i.MX 8M Patches posted for Mainline

Eight days after NXP announced the immediate availability of the i.MX 8M processor family, Pengutronix developer Lucas Stach today posted a first set of 11 patches to support i.MX 8M in the mainline kernel (linux-gpio, linux-clk, linux-arm-kernel and linux-netdev).

This first patch series (together with five additional patches which are not ready for mainline yet) makes it possible to boot an i.MX 8M into userspace, with support for pinmux, clocks, network and eMMC. With these features in place, it will be possible to continue development on a top-of-tree kernel towards support for more interesting peripherals.

i.MX 8M is the newest (available) member of NXP's (former Freescale's, former Motorola's) i.MX family of application processors, initially introduced back in 2001 and used by many, many Pengutronix customers over all those years. In contrast to many other application processors, the i.MX family always made a good compromise between performance, features and availability, especially when it comes to industrial, medical and automotive applications and their longterm requirements. With first class mainline kernel support, i.MX is also a good choice for device manufacturers who care about IoT security, updates and top-of-tree kernels.

In contrast to the industry-work horse i.MX 6, the kernel support for i.MX 8M in mainline is still in it's early stage of development. The hardware is a moderate evolution of the i.MX 6 peripherals, replacing the Cortex-A9 cores by up to four Cortex-A53 cores (ARM64) and improving the overall memory bandwidth, which has always been a bottleneck for graphic intensive applications.

The most intrusive change between i.MX 6 and i.MX 8M is the replacement of the IPU display unit and the VPU video accelerator by VeriSilicon IP cores, so supporting the graphics subsystem will be high on the list of upcoming challenges.

Later this year, NXP will make more i.MX 8 families available: i.MX 8QM and i.MX 8X will be completely different hardware, with much more power but also much less software synergies with the existing i.MX 6 code in mainline.


Weiterführende Links

Showcase: Grafik auf i.MX8MP

Die Inbetriebnahme der Grafikausgabepipeline auf dem i.MX8M Plus (kurz i.MX8MP) ist ein aktuelles Beispiel dafür, wie Open Source und Upstream-Treiber für GPUs und Displayeinheiten Aufwand und Risiko im Projekt reduzieren können.


Showcase: Embedded off-the-shelf

Ein Firmware-Upgrade ist fällig. Eine neu implementierte Funktion muss ausgerollt, eine Sicherheitslücke gepatcht oder neue Hardware-Unterstützung hinzugefügt werden. Die Software ist zwar leistungsfähig, aber komplex. Pengutronix' Strategie, mit dieser Komplexität umzugehen, ist die Arbeit an einem versionskontrollierten Board Support Package (BSP) mit kontinuierlichen Updates und Tests auf dem neuesten Mainline-Linux-Kernel.


Pengutronix at FOSDEM 2021

"FOSDEM is a free event for software developers to meet, share ideas and collaborate. Every year, thousands of developers of free and open source software from all over the world gather at the event in Brussels. In 2021, they will gather online." -- FOSDEM


Pengutronix auf dem ESE-Kongress

Auch der Embedded Software Engineering Kongress findet dieses Jahr online statt, und wir möchten die Chance nutzen, diesen als Event-Partner zu unterstützen, mit Leuten ins Gespräch zu kommen und gleichzeitig ein paar interessanten Vorträgen zu lauschen.


15 Years of i.MX in Mainline Linux

Today it has been 15 years since we mainlined support for Freescale/NXP's i.MX architecture in the Linux kernel! That was one small step for [a] man, one giant leap for (industrial Linux users') mankind :-) Here is some background about why it happened and what you might want to learn from history for your next embedded Linux project.


What Kernel Should I Use (Embedded Edition)

Some days ago, Greg Kroah-Hartmann wrote a great blogpost about Which Stable Kernel One Should Use?. I fully agree with his position; however, I'd like to make some additions for the industry device manufacturer use case and some common pitfalls and misunderstandings we see in that area.


Embedded World 2018: Etnaviv on MX8M!

Robert Schwebel | | Event, i.MX 8M

Every year's end-of-winter highlight starts next Tuesday: Embedded World 2018, and like every year, it is our main trade show and a good opportunity to meet many long-term customers in person. This year's highlight of the highlight: We have Etnaviv and Wayland running on MX8M!


Vortrag: Long Term Maintenance (Embedded Recipes)

Während die technische Seite der Erstellung von Embedded Linux Systemen ein weitgehend gelöstes Problem ist, wohnen dem Betrieb solcher Systeme mit Verbindung zum Internet über lange Zeiträume gewisse Herausforderungen inne.