linux-kernel - RE: [PATCHv2 11/25] PCI: mobiveil: only fix up the Class Code field

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Date:   Tue, 20 Nov 2018 11:01:30 +0000
From:   "M.h. Lian" <minghuan.lian@....com>
To:     "Z.q. Hou" <zhiqiang.hou@....com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "l.subrahmanya@...iveil.co.in" <l.subrahmanya@...iveil.co.in>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        Leo Li <leoyang.li@....com>,
        "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "will.deacon@....com" <will.deacon@....com>
CC:     Mingkai Hu <mingkai.hu@....com>, Xiaowei Bao <xiaowei.bao@....com>
Subject: RE: [PATCHv2 11/25] PCI: mobiveil: only fix up the Class Code field

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

> -----Original Message-----
> From: Z.q. Hou
> Sent: Tuesday, November 20, 2018 5:27 PM
> To: linux-pci@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org;
> bhelgaas@...gle.com; robh+dt@...nel.org; mark.rutland@....com;
> l.subrahmanya@...iveil.co.in; shawnguo@...nel.org; Leo Li
> <leoyang.li@....com>; lorenzo.pieralisi@....com;
> catalin.marinas@....com; will.deacon@....com
> Cc: Mingkai Hu <mingkai.hu@....com>; M.h. Lian
> <minghuan.lian@....com>; Xiaowei Bao <xiaowei.bao@....com>; Z.q. Hou
> <zhiqiang.hou@....com>
> Subject: [PATCHv2 11/25] PCI: mobiveil: only fix up the Class Code field
> 
> From: Hou Zhiqiang <Zhiqiang.Hou@....com>
> 
> Fix up the Class Code to PCI bridge, do not change the Revision ID.
> And move the fixup to mobiveil_host_init function.
> 
> Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver")
> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@....com>
> ---
> V2:
>  - Added fixes entry.
> 
>  drivers/pci/controller/pcie-mobiveil.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/pci/controller/pcie-mobiveil.c
> b/drivers/pci/controller/pcie-mobiveil.c
> index 78e575e71f4d..8eee1ab7ee24 100644
> --- a/drivers/pci/controller/pcie-mobiveil.c
> +++ b/drivers/pci/controller/pcie-mobiveil.c
> @@ -653,6 +653,12 @@ static int mobiveil_host_init(struct mobiveil_pcie
> *pcie)
>  				   type, resource_size(win->res));
>  	}
> 
> +	/* fixup for PCIe class register */
> +	value = csr_readl(pcie, PAB_INTP_AXI_PIO_CLASS);
> +	value &= 0xff;
> +	value |= (PCI_CLASS_BRIDGE_PCI << 16);
> +	csr_writel(pcie, value, PAB_INTP_AXI_PIO_CLASS);
> +
>  	/* setup MSI hardware registers */
>  	mobiveil_pcie_enable_msi(pcie);
> 
> @@ -896,9 +902,6 @@ static int mobiveil_pcie_probe(struct platform_device
> *pdev)
>  		goto error;
>  	}
> 
> -	/* fixup for PCIe class register */
> -	csr_writel(pcie, 0x060402ab, PAB_INTP_AXI_PIO_CLASS);
> -
>  	/* initialize the IRQ domains */
>  	ret = mobiveil_pcie_init_irq_domain(pcie);
>  	if (ret) {
> --
> 2.17.1