[PATCH 7/8] pci: pci_mvebu: Setup PCI controller to Root Complex mode

[Stefan Roese]

On 22.10.21 16:22, Pali Rohár wrote:
> Root Complex should be the default mode, let's set it explicitly.
> 
> Signed-off-by: Pali Rohár <pali at kernel.org>
> Reviewed-by: Marek Behún <marek.behun at nic.cz>

Reviewed-by: Stefan Roese <sr at denx.de>

Thanks,
Stefan

> ---
>   drivers/pci/pci_mvebu.c | 6 ++++++
>   1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/pci/pci_mvebu.c b/drivers/pci/pci_mvebu.c
> index e43fa12d3819..b0c673d8c472 100644
> --- a/drivers/pci/pci_mvebu.c
> +++ b/drivers/pci/pci_mvebu.c
> @@ -62,6 +62,7 @@ DECLARE_GLOBAL_DATA_PTR;
>   #define  PCIE_MASK_ENABLE_INTS          (0xf << 24)
>   #define PCIE_CTRL_OFF			0x1a00
>   #define  PCIE_CTRL_X1_MODE		BIT(0)
> +#define  PCIE_CTRL_RC_MODE		BIT(1)
>   #define PCIE_STAT_OFF			0x1a04
>   #define  PCIE_STAT_BUS                  (0xff << 8)
>   #define  PCIE_STAT_DEV                  (0x1f << 16)
> @@ -373,6 +374,11 @@ static int mvebu_pcie_probe(struct udevice *dev)
>   	struct pci_controller *hose = dev_get_uclass_priv(ctlr);
>   	u32 reg;
>   
> +	/* Setup PCIe controller to Root Complex mode */
> +	reg = readl(pcie->base + PCIE_CTRL_OFF);
> +	reg |= PCIE_CTRL_RC_MODE;
> +	writel(reg, pcie->base + PCIE_CTRL_OFF);
> +
>   	/*
>   	 * Change Class Code of PCI Bridge device to PCI Bridge (0x600400)
>   	 * because default value is Memory controller (0x508000) which
> 


Viele Grüße,
Stefan

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