[PATCH v2] bios/perf: Parse PCIe speeds correctly for ver 0x40

[PATCH v2] bios/perf: Parse PCIe speeds correctly for ver 0x40

[Karol Herbst]

v2: 0x21 also means 2.5 GT/s

Signed-off-by: Karol Herbst <karolherbst@gmail.com>
---
 drm/nouveau/nvkm/subdev/bios/perf.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drm/nouveau/nvkm/subdev/bios/perf.c b/drm/nouveau/nvkm/subdev/bios/perf.c
index c3068358..3bbb7fed 100644
--- a/drm/nouveau/nvkm/subdev/bios/perf.c
+++ b/drm/nouveau/nvkm/subdev/bios/perf.c
@@ -146,18 +146,17 @@ nvbios_perfEp(struct nvkm_bios *bios, int idx,
 		break;
 	case 0x40:
 		info->voltage  = nvbios_rd08(bios, perf + 0x02);
-		switch (nvbios_rd08(bios, perf + 0xb) & 0x3) {
-		case 0:
-			info->pcie_speed = NVKM_PCIE_SPEED_5_0;
-			break;
-		case 3:
-		case 1:
+		switch (nvbios_rd08(bios, perf + 0xb) & 0x21) {
+		case 0x01:
+		case 0x21:
 			info->pcie_speed = NVKM_PCIE_SPEED_2_5;
 			break;
-		case 2:
-			info->pcie_speed = NVKM_PCIE_SPEED_8_0;
+		case 0x20:
+			info->pcie_speed = NVKM_PCIE_SPEED_5_0;
 			break;
+		case 0x00:
 		default:
+			info->pcie_speed = NVKM_PCIE_SPEED_8_0;
 			break;
 		}
 		info->pcie_width = 0xff;
-- 
2.12.2

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