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pmgr: Power up parents before children

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2023-05-05 12:39:26 +09:00
parent 59e0032ba4
commit 50c808df2c
1 changed files with 16 additions and 9 deletions
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25
src/pmgr.c
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@ -121,23 +121,30 @@ static int pmgr_set_mode_recursive(u8 die, u16 id, u8 target_mode, bool recurse)
if (pmgr_find_device(id, &device))
return -1;
if (!(device->flags & PMGR_FLAG_VIRTUAL)) {
if (target_mode == 0 && !(device->flags & PMGR_FLAG_VIRTUAL)) {
uintptr_t addr = pmgr_device_get_addr(die, device);
if (!addr)
return -1;
if (pmgr_set_mode(addr, target_mode))
return -1;
}
if (!recurse)
return 0;
for (int i = 0; i < 2; i++) {
if (device->parent[i]) {
u16 parent = FIELD_GET(PMGR_DEVICE_ID, device->parent[i]);
int ret = pmgr_set_mode_recursive(die, parent, target_mode, true);
if (ret < 0)
return ret;
if (recurse)
for (int i = 0; i < 2; i++) {
if (device->parent[i]) {
u16 parent = FIELD_GET(PMGR_DEVICE_ID, device->parent[i]);
int ret = pmgr_set_mode_recursive(die, parent, target_mode, true);
if (ret < 0)
return ret;
}
}
if (target_mode != 0 && !(device->flags & PMGR_FLAG_VIRTUAL)) {
uintptr_t addr = pmgr_device_get_addr(die, device);
if (!addr)
return -1;
if (pmgr_set_mode(addr, target_mode))
return -1;
}
return 0;