New job
A few months ago I started a new job at Linaro as the technical lead for the Linaro Stable Kernel – I just posted a brief thing what I’m up to now over on the Linaro blog.
View ArticleHuman factors
An issue which I always find depressing but sadly unsurprising in discussions of process with software is the frequent disregard for human elements; indeed often the goal people have in creating...
View ArticleAdventures with ARM server
I recently got a CubieTruck with a terabyte SSD to use as a general always on server. This being an ARM board rather than a PC (with a rather nice form factor – it’s basically the same size as a SSD)...
View ArticleKernel build times for automated builders
Over the past year or so various people have been automating kernel builds with the aim of both setting the standard that things should build reliably and using the resulting builds for automated...
View ArticleFlashing an AT91SAM9G20-EK from bare metal
Since I just had cause to do this and it was harder than it needed to be due to bitrot in the public documentation I could find I thought I’d write up how to get a modern bootloader onto older Atmel...
View ArticleMaximising the efficiency of chained regulators
Linux v4.4 will include a cool new feature contributed by Sascha Hauer of Pengutronix which propagates voltages set on a regulator to the regulators that supply it (taking into account the minimum...
View ArticlePerformance problems
Just over a year ago I implemented an optimization to the SPI core code in Linux that avoids some needless context switches to a worker thread in the main data path that most clients use. This was...
View ArticleExpedient ABIs
The biggest change we’ve seen in the Linux kernel for ARM over the past few years has been the transition to providing descriptions of the hardware in systems via device tree. This splits out the...
View Article2018 Linux Audio Miniconference
As in previous years we’re trying to organize an audio miniconference so we can get together and talk through issues, especially design decisons, face to face. This year’s event will be held on Sunday...
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Linux Audio Miniconf 2018 report
The audio miniconference was held on the 21st in the offices of Cirrus Logic in Edinburgh with 15 attendees from across the industry including userspace and kernel developers, with people from several...
View ArticleAudio Miniconf 2019 Report
This year’s audio miniconference happened last month in Lyon, sponsored by Intel. Thanks to everyone who attended, this event is all about conversations between people, and to Alexandre Belloni for...
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