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Good read. Didn’t realize many auto chips are as far back as 90nm. The problem with gpu/phone chip supply is insufficient leading node capacity but problem with auto chips is insufficient trailing node capacity? And both ends are in Asia. US capacity is middlling active nodes.
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Replying to @vgr
i read this awhile back and i figure some of the challenges probably apply in this case as well. jalopnik.com/i-asked-expert
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The automotive manufacturers need to get together and standardize on more modern interconnects / busses. They could do contracts for 5 year cycles and establish 2nd sources; e.g. the fact that AMD exists at all is due to US military having similar requirements for the 8088.
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Vast majority of silicon in an automobile is legacy node, 28nm MCUs are the most predominant ones. One reason is cost. Bigger reason is reliability. Many car chips need what is referred to as “zero DPM” defects per million. That’s extremely hard to do on newer nodes
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