[PATCH] drm/radeon/kms: rework spread spectrum handling

Alex Deucher alexdeucher at gmail.com
Mon Oct 4 14:13:01 PDT 2010


This patch reworks spread spectrum handling to enable it
properly on lvds and DP/eDP links.  It also fixes several
bugs in the old spread spectrum code.

-----------------------------------------------------------------------------

lspci -v

-----------------------------------------------------------------------------
03:00.0 VGA compatible controller: ATI Technologies Inc RV730 PRO [Radeon HD
4650] (prog-if 00 [VGA controller])
    Subsystem: PC Partner Limited Device 9498
    Flags: bus master, fast devsel, latency 0, IRQ 40
    Memory at e0000000 (64-bit, prefetchable) [size=256M]
    Memory at fb9e0000 (64-bit, non-prefetchable) [size=64K]
    I/O ports at ee00 [size=256]
    [virtual] Expansion ROM at fb900000 [disabled] [size=128K]
    Capabilities: [50] Power Management version 3
    Capabilities: [58] Express Legacy Endpoint, MSI 00
    Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
    Kernel driver in use: radeon

03:00.1 Audio device: ATI Technologies Inc RV710/730
    Subsystem: PC Partner Limited R700 Audio Device [Radeon HD 4000 Series]
    Flags: bus master, fast devsel, latency 0, IRQ 44
    Memory at fb9fc000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: [50] Power Management version 3
    Capabilities: [58] Express Legacy Endpoint, MSI 00
    Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
    Kernel driver in use: HDA Intel
-----------------------------------------------------------------------------

Let me know what else I can provide.

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