Re: [PATCH v3] drm: mxsfb: Implement LCDIF scanout CRC32 support

2022-05-01 Thread Marek Vasut
On 4/29/22 23:23, Marek Vasut wrote: The LCDIF controller as present in i.MX28/i.MX6SX/i.MX8M Mini/Nano has CRC_STAT register, which contains CRC32 of the frame as it was clocked out of the DPI interface of the LCDIF. This is most likely meant as a functional safety feature. Unfortunately, there

[PATCH v3] drm: mxsfb: Implement LCDIF scanout CRC32 support

2022-04-29 Thread Marek Vasut
The LCDIF controller as present in i.MX28/i.MX6SX/i.MX8M Mini/Nano has CRC_STAT register, which contains CRC32 of the frame as it was clocked out of the DPI interface of the LCDIF. This is most likely meant as a functional safety feature. Unfortunately, there is zero documentation on how the CRC32