RE: [PATCHv2 14/25] PCI: mobiveil: initialize Primary/Secondary/Subordinate bus number

[M.h. Lian]

reviewed-by: Minghuan Lian <Minghuan.Lian@xxxxxxx>

> -----Original Message-----
> From: Z.q. Hou
> Sent: Tuesday, November 20, 2018 5:27 PM
> To: linux-pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> bhelgaas@xxxxxxxxxx; robh+dt@xxxxxxxxxx; mark.rutland@xxxxxxx;
> l.subrahmanya@xxxxxxxxxxxxxx; shawnguo@xxxxxxxxxx; Leo Li
> <leoyang.li@xxxxxxx>; lorenzo.pieralisi@xxxxxxx;
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> Cc: Mingkai Hu <mingkai.hu@xxxxxxx>; M.h. Lian
> <minghuan.lian@xxxxxxx>; Xiaowei Bao <xiaowei.bao@xxxxxxx>; Z.q. Hou
> <zhiqiang.hou@xxxxxxx>
> Subject: [PATCHv2 14/25] PCI: mobiveil: initialize
> Primary/Secondary/Subordinate bus number
> 
> From: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>
> 
> The reset value is all zero, so set a workable value for Primary, Secondary
> and Subordinate bus numbers.
> 
> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>
> ---
> V2:
>  - no change
> 
>  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