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drm/nouveau/bios: parse 8.1 Gbps DP link rate

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From DCB 4.1 spec.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2015-12-21 09:27:49 +10:00
parent 7d2813c437
commit cf0912924f
1 changed files with 7 additions and 4 deletions
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11
drivers/gpu/drm/nouveau/nvkm/subdev/bios/dcb.c
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@ -143,16 +143,19 @@ dcb_outp_parse(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len,
switch (outp->type) { switch (outp->type) {
case DCB_OUTPUT_DP: case DCB_OUTPUT_DP:
switch (conf & 0x00e00000) { switch (conf & 0x00e00000) {
case 0x00000000: case 0x00000000: /* 1.62 */
outp->dpconf.link_bw = 0x06; outp->dpconf.link_bw = 0x06;
break; break;
case 0x00200000: case 0x00200000: /* 2.7 */
outp->dpconf.link_bw = 0x0a; outp->dpconf.link_bw = 0x0a;
break; break;
case 0x00400000: case 0x00400000: /* 5.4 */
default:
outp->dpconf.link_bw = 0x14; outp->dpconf.link_bw = 0x14;
break; break;
case 0x00600000: /* 8.1 */
default:
outp->dpconf.link_bw = 0x1e;
break;
} }
switch ((conf & 0x0f000000) >> 24) { switch ((conf & 0x0f000000) >> 24) {