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drm/nouveau/volt/gk104: round up in gk104_volt_set

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We always want a equal or higher voltage than the requested ones, otherwise
nouveau undervolts.

Signed-off-by: Karol Herbst <nouveau@karolherbst.de>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Karol Herbst 2016-04-16 20:01:59 +02:00 • committed by Ben Skeggs
commit d07a97e939
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk104.c
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@ -56,7 +56,7 @@ gk104_volt_set(struct nvkm_volt *base, u32 uv)
/* the blob uses this crystal frequency, let's use it too. */
div = 27648000 / bios->pwm_freq;
duty = (uv - bios->base) * div / bios->pwm_range;
duty = DIV_ROUND_UP((uv - bios->base) * div, bios->pwm_range);
nvkm_wr32(device, 0x20340, div);
nvkm_wr32(device, 0x20344, 0x80000000 | duty);