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PCI: mobiveil: Initialize Primary/Secondary/Subordinate bus numbers

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[ Upstream commit 6f3ab451aa ]

The reset value of Primary, Secondary and Subordinate bus numbers is
zero which is a broken setup.

Program a sensible default value for Primary/Secondary/Subordinate
bus numbers.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hou Zhiqiang 2019-07-05 17:56:38 +08:00 committed by Greg Kroah-Hartman
parent 9eb4f2886d
commit 270972df68
1 changed files with 6 additions and 0 deletions
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6
drivers/pci/controller/pcie-mobiveil.c
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@ -508,6 +508,12 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
return err;
}
/* 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