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| author | Stephen Warren <swarren@wwwdotorg.org> | 2016-02-06 10:42:43 -0700 |
|---|---|---|
| committer | Anatolij Gustschin <agust@denx.de> | 2016-02-06 19:07:29 +0100 |
| commit | 1382648b6bef3921086abeadadbd9fbc54619ab1 (patch) | |
| tree | e83dd3e3756aca641e6c591002042f23d65a1f3a /arch/arm/thumb1 | |
| parent | 94985cc9d3d7ed991ca8b2627d5894df5ea68f49 (diff) | |
video: bcm2835: use bus_to_phys() on FB address
The FB address is generated by the firmware running on the GPU/VideoCore
and is a "bus" address. This address is the other side of an IOMMU from
the ARM upon which U-Boot is running. Use bus_to_phys() to convert this
to an ARM physical address. Without this, U-Boot seems to work just fine,
but once the Linux kernel boots on an RPi2, accessing the FB memory often
causes a hard system hang.
This is related to:
122426d46e31 ARM: bcm2835: use phys_to_bus() for mbox
5c0beb5c58c8 usb: dwc2: use phys_to_bus/bus_to_phys
79340db7f1f6 ARM: bcm2835: implement phys_to_bus/bus_to_phys
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'arch/arm/thumb1')
0 files changed, 0 insertions, 0 deletions