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[DM/FIXUP] Add ms sleep for link status change 

We should wait a while for success or failure
after link status change or will communicate
fail with the endpoint.

Signed-off-by: GuEe-GUI <2991707448@qq.com>
This commit is contained in:
GuEe-GUI 2024-11-25 20:42:08 +08:00 committed by Rbb666
parent 1ac8044294
commit 71520fa9f1
1 changed files with 5 additions and 1 deletions
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6
components/drivers/pci/probe.c
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@ -486,7 +486,7 @@ static void pcie_fixup_link(struct rt_pci_device *pdev)
if (!!(exp_lnksta & PCIEM_LINK_STA_DL_ACTIVE)) if (!!(exp_lnksta & PCIEM_LINK_STA_DL_ACTIVE))
{ {
return; goto _status_sync;
} }
rt_thread_mdelay(10); rt_thread_mdelay(10);
@ -496,6 +496,10 @@ static void pcie_fixup_link(struct rt_pci_device *pdev)
rt_pci_write_config_u16(pdev, pos + PCIER_LINK_CTL2, exp_lnkctl2); rt_pci_write_config_u16(pdev, pos + PCIER_LINK_CTL2, exp_lnkctl2);
rt_pci_write_config_u16(pdev, pos + PCIER_LINK_CTL, rt_pci_write_config_u16(pdev, pos + PCIER_LINK_CTL,
exp_lnkctl | PCIEM_LINK_CTL_RETRAIN_LINK); exp_lnkctl | PCIEM_LINK_CTL_RETRAIN_LINK);
_status_sync:
/* Wait a while for success or failure */
rt_thread_mdelay(100);
} }
static rt_uint32_t pci_scan_bridge_extend(struct rt_pci_bus *bus, struct rt_pci_device *pdev, static rt_uint32_t pci_scan_bridge_extend(struct rt_pci_bus *bus, struct rt_pci_device *pdev,