SteamOS is almost entirely open source software, except for the handheld’s specific proprietary drivers and Steam itself. Vendors are free to use it via its open source license if they choose.
The hardest parts (i.e. proton) are fully available to anyone who’d like to use it under an approximation of the MIT license, even for commercial use.
the steam deck drivers are being upstream to mesa and the linux kernel, no?, meybe they are using a pre-build before the code get merged, but every steam deck fix is being merged(mesa, radv, even the kernel got a lot of fixes for it)
SteamOS is almost entirely open source software, except for the handheld’s specific proprietary drivers and Steam itself. Vendors are free to use it via its open source license if they choose.
The hardest parts (i.e. proton) are fully available to anyone who’d like to use it under an approximation of the MIT license, even for commercial use.
the steam deck drivers are being upstream to mesa and the linux kernel, no?, meybe they are using a pre-build before the code get merged, but every steam deck fix is being merged(mesa, radv, even the kernel got a lot of fixes for it)
Here’s a list of the non-free software packages used in an older version of the OS.
Briefly: graphics, wireless drivers, firmware etc. The hardware is non-free although designed for to be user servicable, which is a great first step.
You’re right that open graphics support exists, but they’re using proprietary binary drivers.