On PowerBook6,1 (PowerBook G4 867 12") HWSQ entry 0 (which is currently always used by nouveau) fails, but the BIOS declares 2 HWSQ entries and entry 1 works. Add a quirk to use HWSQ entry 1. Signed-off-by: Icenowy Zheng <icenowy@xxxxxxx> --- drivers/gpu/drm/nouveau/nouveau_bios.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c index e8c445eb11004..2691d0e0cf9f1 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.c +++ b/drivers/gpu/drm/nouveau/nouveau_bios.c @@ -1977,6 +1977,13 @@ static int load_nv17_hw_sequencer_ucode(struct drm_device *dev, if (!hwsq_offset) return 0; +#ifdef __powerpc__ + /* HWSQ entry 0 fails on PowerBook G4 867 12" (Al) */ + if (of_machine_is_compatible("PowerBook6,1")) + return load_nv17_hwsq_ucode_entry(dev, bios, + hwsq_offset + sz, 1); +#endif + /* always use entry 0? */ return load_nv17_hwsq_ucode_entry(dev, bios, hwsq_offset + sz, 0); } -- 2.30.2