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drm/nouveau/clk/gf100-: Clean up PLL locking test 

Corresponds with GT215. Don't rely on the lock test logic being
unconditionally enabled, and disable test logic when done (presumably
to save power).

v2: Remove warning, nvkm_msec already warns on time-out

Signed-off-by: Roy Spliet <nouveau@spliet.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Roy Spliet 2016-06-17 22:16:13 +01:00 committed by Ben Skeggs
parent 20560a9a3c
commit 0f7fbb990c
2 changed files with 14 additions and 2 deletions
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8
drivers/gpu/drm/nouveau/nvkm/subdev/clk/gf100.c
View File

@ -366,11 +366,17 @@ gf100_clk_prog_2(struct gf100_clk *clk, int idx)
if (info->coef) {
nvkm_wr32(device, addr + 0x04, info->coef);
nvkm_mask(device, addr + 0x00, 0x00000001, 0x00000001);
/* Test PLL lock */
nvkm_mask(device, addr + 0x00, 0x00000010, 0x00000000);
nvkm_msec(device, 2000,
if (nvkm_rd32(device, addr + 0x00) & 0x00020000)
break;
);
nvkm_mask(device, addr + 0x00, 0x00020004, 0x00000004);
nvkm_mask(device, addr + 0x00, 0x00000010, 0x00000010);
/* Enable sync mode */
nvkm_mask(device, addr + 0x00, 0x00000004, 0x00000004);
}
}
}

8
drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk104.c
View File

@ -393,11 +393,17 @@ gk104_clk_prog_2(struct gk104_clk *clk, int idx)
if (info->coef) {
nvkm_wr32(device, addr + 0x04, info->coef);
nvkm_mask(device, addr + 0x00, 0x00000001, 0x00000001);
/* Test PLL lock */
nvkm_mask(device, addr + 0x00, 0x00000010, 0x00000000);
nvkm_msec(device, 2000,
if (nvkm_rd32(device, addr + 0x00) & 0x00020000)
break;
);
nvkm_mask(device, addr + 0x00, 0x00020004, 0x00000004);
nvkm_mask(device, addr + 0x00, 0x00000010, 0x00000010);
/* Enable sync mode */
nvkm_mask(device, addr + 0x00, 0x00000004, 0x00000004);
}
}