Purism and Linux 5.18

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Martin Kepplinger

Latest posts by Martin Kepplinger (see all)

• PureOS Unaffected by ext4 Data Corruption Bug - January 2, 2024
• Purism and Linux 6.5 to 6.7 - December 22, 2023
• Purism and Linux 6.2 to 6.4 - July 13, 2023

Following up on our report for Linux 5.17 this summarizes the progress on mainline support for the Librem 5 phone and its development kit during the 5.18 development cycle. This summary is only about code flowing upstream.

Librem 5 camera support

This time it’s been all about various media drivers that are needed when using the cameras on the Librem 5 phone. As the mipi, csi and sensor drivers for the selfie cam are supported in the mainline kernel, we keep maintaining them as part of the community now. We sent these mostly minor but important fixes:

• media: dt-bindings: media: hynix,hi846: add link-frequencies description
• media: dt-binding: media: hynix,hi846: use $defs/port-base port description
• media: dt-bindings: media: document imx8mq support for imx7-csi
• media: imx: imx7-media-csi: add support for imx8mq
• media: imx: imx8mq-mipi-csi2: remove wrong irq config write operation

Suspend to RAM

Our recent work on suspend to RAM resulted in some patches to various drivers that failed in that situation. Actually, suspend to RAM is not yet being tested very well by the community and we want to change that. Here, incidentally, we also fix camera-related drivers. Everything is interconnected.

While we’ve enabled suspend to RAM in PureOS for the Librem 5 and thus allow users to experiment, we know of things that are still missing to make it stable. We’re working on it and will keep you updated.

• media: i2c: dw9714: add optional regulator support
• media: imx: imx8mq-mipi_csi2: fix system resume

Code review

During this round we contributed 5 Reviewed-by: or Tested-by: tags to patches by other authors. Again we would like to thank everybody who reviewed our patches and helped us supporting our hardware in mainline Linux.

Sources

Have a look at our Linux tree to see what is currently being worked on and tested (or help if you feel like joining the fun).

Purism Products and Availability Chart

	Model	Status	Lead Time
	Librem Key (Made in USA)	In Stock ($59+)	10 business days	Learn More Buy Now
	Librem 5	In Stock ($999+) 3GB/32GB	10 business days	Learn More Buy Now
	Librem 5 + SIMple (4 GB Data)	In Stock ($99/mo)	10 business days	Learn More Buy Now
	Librem 5 + SIMple Plus (10 GB Data)	In Stock ($129/mo)	10 business days	Learn More Buy Now
	Librem 5 + AweSIM (Unlimited Data)	In Stock ($169/mo)	10 business days	Learn More Buy Now
	Librem 11	In Stock ($999+) 8GB/1TB	10 business days	Learn More Buy Now
	Librem 14	In Stock ($1,370+)	10 business days	Learn More Buy Now
	Librem Mini	Apr 2024 ($799+)	Shipping April, 2024	Learn More Buy Now
	Liberty Phone (Made in USA Electronics)	Apr 2024 ($1,999+) 4GB/128GB	Shipping April, 2024	Learn More Buy Now
	Librem Server	Apr 2024 ($2,999+)	Shipping April, 2024	Learn More Buy Now