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platform_kernel-5.15
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drm/nouveau/pm: fix dll off -> dll on transitions 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Martin Peres <martin.peres@labri.fr>
This commit is contained in:
Ben Skeggs 2012-01-24 13:39:56 +10:00
parent a9bc247cbb
commit b830973b68
1 changed files with 7 additions and 2 deletions
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9
drivers/gpu/drm/nouveau/nouveau_mem.c
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@ -1016,7 +1016,8 @@ nouveau_mem_exec(struct nouveau_mem_exec_func *exec,
} }
if (mr[1] != info->mr[1]) { if (mr[1] != info->mr[1]) {
exec->mrs (exec, 1, info->mr[1]); /* need to keep DLL off until later, at least on GDDR3 */
exec->mrs (exec, 1, info->mr[1] | (mr[1] & mr1_dlloff));
exec->wait(exec, tMRD); exec->wait(exec, tMRD);
} }
@ -1028,8 +1029,12 @@ nouveau_mem_exec(struct nouveau_mem_exec_func *exec,
/* update PFB timing registers */ /* update PFB timing registers */
exec->timing_set(exec); exec->timing_set(exec);
/* DLL reset */ /* DLL (enable + ) reset */
if (!(info->mr[1] & mr1_dlloff)) { if (!(info->mr[1] & mr1_dlloff)) {
if (mr[1] & mr1_dlloff) {
exec->mrs (exec, 1, info->mr[1]);
exec->wait(exec, tMRD);
}
exec->mrs (exec, 0, info->mr[0] | 0x00000100); exec->mrs (exec, 0, info->mr[0] | 0x00000100);
exec->wait(exec, tMRD); exec->wait(exec, tMRD);
exec->mrs (exec, 0, info->mr[0] | 0x00000000); exec->mrs (exec, 0, info->mr[0] | 0x00000000);