Navigation: Linux Kernel Driver DataBase - web LKDDB: Main index - V index

CONFIG_VIDEO_FB_IVTV_FORCE_PAT: force cx23415 framebuffer init with x86 PAT enabled

General informations

The Linux kernel configuration item CONFIG_VIDEO_FB_IVTV_FORCE_PAT:

Help text

With PAT enabled, the cx23415 framebuffer driver does not utilize write-combined caching on the framebuffer memory. For this reason, the driver will by default disable itself when initializied on a kernel with PAT enabled (i.e. not using the nopat kernel parameter).

The driver is not easily upgradable to the PAT-aware ioremap_wc() API since the firmware hides the address ranges that should be marked write-combined from the driver.

With this setting enabled, the framebuffer will initialize on PAT-enabled systems but the framebuffer memory will be uncached.

If unsure, say N.

Hardware

LKDDb

Raw data from LKDDb:

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

Automatic links from Google (and ads)

Custom Search

Popular queries:

Navigation: Linux Kernel Driver DataBase - web LKDDB: main index - V index

Automatically generated (in year 2019). See also LKDDb sources on GitLab