Quote:
Originally Posted by knc1
Then the next important hardware difference (if you want to see something) is the hardware controlling the e-ink display.
That is built into the i.MX5* series (K4 & K5) and is an external chip on others.
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The K4 complicates this by having a "hardware emulation layer" that uses K3-style framebuffer drivers (einkfb) when booting from main, but K5-style framebuffer drivers (mxcfb) when booting from diags. K5-style is MUCH faster.
I think they use K3 compatibility eink so they could re-use a lot of K3 code in the K4. There are other reports that the K4 framework is more like the K3, despite the fact that the K4 hardware is more like the K5.