Hardware-Debugging on Nick DeTello - Nicholas DeTellohttps://nick.detello.com/tags/hardware-debugging/Recent content in Hardware-Debugging on Nick DeTello - Nicholas DeTelloHugoen-usFri, 02 Oct 2026 00:00:00 +0000Finding a DSI driver bug by diffing registers against the vendor imagehttps://nick.detello.com/blog/dsi-driver-bug-register-diff-vendor-image/Fri, 02 Oct 2026 00:00:00 +0000https://nick.detello.com/blog/dsi-driver-bug-register-diff-vendor-image/A register diff is only as good as the blocks its baseline covers. A review of a DSI start failure ruled out every candidate register fix, yet the fault sat in a block its baseline skipped, where a masked write had left an undocumented bit set.