[PATCH] pci: zynqmp: Fix the pcireg base

Michal Simek michal.simek at amd.com
Wed May 21 15:10:47 CEST 2025



On 5/16/25 11:23, Venkatesh Yadav Abbarapu wrote:
> The pcireg base is not assigned to any address, reading the
> pcireg base with PS_LINKUP_OFFSET which is incorrect and
> giving random values. So update the pcireg base from
> devicetree so that we can read the valid PCIE link status
> and PHY ready status.
> 
> Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu at amd.com>
> ---
>   drivers/pci/pcie-xilinx-nwl.c | 7 +++++++
>   1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/pci/pcie-xilinx-nwl.c b/drivers/pci/pcie-xilinx-nwl.c
> index 7ef2bdf57b5..e03ab3be912 100644
> --- a/drivers/pci/pcie-xilinx-nwl.c
> +++ b/drivers/pci/pcie-xilinx-nwl.c
> @@ -303,6 +303,13 @@ static int nwl_pcie_parse_dt(struct nwl_pcie *pcie)
>   		return PTR_ERR(pcie->breg_base);
>   	pcie->phys_breg_base = res.start;
>   
> +	ret = dev_read_resource_byname(dev, "pcireg", &res);
> +	if (ret)
> +		return ret;
> +	pcie->pcireg_base = devm_ioremap(dev, res.start, resource_size(&res));
> +	if (IS_ERR(pcie->pcireg_base))
> +		return PTR_ERR(pcie->pcireg_base);
> +
>   	ret = dev_read_resource_byname(dev, "cfg", &res);
>   	if (ret)
>   		return ret;

Applied.
M


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