[WIP] Unset the flash chip's WP pin on erase#4
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c0d3z3r0 wants to merge 1 commit intoKerJoe:masterfrom
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[WIP] Unset the flash chip's WP pin on erase#4c0d3z3r0 wants to merge 1 commit intoKerJoe:masterfrom
c0d3z3r0 wants to merge 1 commit intoKerJoe:masterfrom
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This code is board dependent, it has to be made more generic (allowing to select the GPIO using command line arguments) for me to be able to merge it. |
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Yup, that's why it's WIP and I added that comment :-) |
Usually firmware asserts the flash chip's WP pin to protect the its content. Deassert WP during erase/write operations. TODO: probably board specific Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
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Usually firmware pulls the WP pin of the flash chip low to protect the flash chip's content. Set it to high during erase/write.
This was required on a Lenovo ThinkVision P40w-20. Found out by reading Realtek RTD Customer Tool communication during erase. Maybe it's generic? I don't know yet