On Fri, Mar 28, 2025 at 03:30:44PM +0100, Jerome Brunet wrote:
> On rcar-gen4, the ep BAR4 has a fixed size of 256B.
> Document this constraint in the epc features of the platform.
>
> Fixes: e311b3834dfa ("PCI: rcar-gen4: Add endpoint mode support")
> Signed-off-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
- Mani
> ---
> This was tested on rcar-gen4 r8a779f0-spider device.
> ---
> drivers/pci/controller/dwc/pcie-rcar-gen4.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4.c b/drivers/pci/controller/dwc/pcie-rcar-gen4.c
> index fc872dd35029c083da58144dce23cd1ce80f9374..02638ec442e7012d61dfad70016077d9becf56a6 100644
> --- a/drivers/pci/controller/dwc/pcie-rcar-gen4.c
> +++ b/drivers/pci/controller/dwc/pcie-rcar-gen4.c
> @@ -403,6 +403,7 @@ static const struct pci_epc_features rcar_gen4_pcie_epc_features = {
> .msix_capable = false,
> .bar[BAR_1] = { .type = BAR_RESERVED, },
> .bar[BAR_3] = { .type = BAR_RESERVED, },
> + .bar[BAR_4] = { .type = BAR_FIXED, .fixed_size = 256 },
> .bar[BAR_5] = { .type = BAR_RESERVED, },
> .align = SZ_1M,
> };
>
> ---
> base-commit: dea140198b846f7432d78566b7b0b83979c72c2b
> change-id: 20250328-rcar-gen4-bar4-dccd1347fe38
>
> Best regards,
> --
> Jerome
>
--
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