| From | "Z.q. Hou" <> | Subject | [PATCHv5 14/20] PCI: mobiveil: Initialize Primary/Secondary/Subordinate bus numbers | Date | Fri, 12 Apr 2019 08:36:36 +0000 |
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From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
The reset value of Primary, Secondary and Subordinate bus numbers is zero, so set a workable value for these 3 bus numbers.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in> --- V5: - Corrected and retouched the subject and changelog.
drivers/pci/controller/pcie-mobiveil.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c index db7ecb021c63..9210165fe8c0 100644 --- a/drivers/pci/controller/pcie-mobiveil.c +++ b/drivers/pci/controller/pcie-mobiveil.c @@ -582,6 +582,12 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie) u32 value, pab_ctrl, type; struct resource_entry *win; + /* setup bus numbers */ + value = csr_readl(pcie, PCI_PRIMARY_BUS); + value &= 0xff000000; + value |= 0x00ff0100; + csr_writel(pcie, value, PCI_PRIMARY_BUS); + /* * program Bus Master Enable Bit in Command Register in PAB Config * Space -- 2.17.1
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