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PCI: brcmstb: Set generation limit before PCIe link up

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[ Upstream commit 72d36589c6b7bef6b30eb99fcb7082f72faca37f ]

When the user elects to limit the PCIe generation via the appropriate
devicetree property, apply the settings before the PCIe link up, not
after.

Fixes: c045213703 ("PCI: brcmstb: Add Broadcom STB PCIe host controller driver")
Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20250214173944.47506-2-james.quinlan@broadcom.com
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jim Quinlan
2025-02-14 12:39:29 -05:00
committed by Greg Kroah-Hartman
parent b23b73ea4c
commit 4557922dbf
1 changed files with 4 additions and 3 deletions
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drivers/pci/controller/pcie-brcmstb.c
+4 -3
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@@ -1276,6 +1276,10 @@ static int brcm_pcie_start_link(struct brcm_pcie *pcie)
bool ssc_good = false;
int ret, i;
/* Limit the generation if specified */
if (pcie->gen)
brcm_pcie_set_gen(pcie, pcie->gen);
/* Unassert the fundamental reset */
ret = pcie->perst_set(pcie, 0);
if (ret)
@@ -1302,9 +1306,6 @@ static int brcm_pcie_start_link(struct brcm_pcie *pcie)
brcm_config_clkreq(pcie);
if (pcie->gen)
brcm_pcie_set_gen(pcie, pcie->gen);
if (pcie->ssc) {
ret = brcm_pcie_set_ssc(pcie);
if (ret == 0)