RE: [PATCH v3 1/1] PCI: layerscape-ep: set 64-bit DMA mask

[Roy Zang]

> -----Original Message-----
> From: Frank Li <frank.li@xxxxxxx>
> Sent: Tuesday, September 26, 2023 9:05 AM
> From: Guanhua Gao <guanhua.gao@xxxxxxx>
> 
> Set DMA mask and coherent DMA mask to enable 64-bit addressing.
> 
> Signed-off-by: Guanhua Gao <guanhua.gao@xxxxxxx>
> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> ---
> 
> Notes:
>     change from v2 to v3
>     - remove check return value of dma_set_mask_and_coherent. 64bit mask
> always
>     return success.
>     - remove redundate comments
>     change from v1 to v2
>     - Remove 32bit DMA mask set.
> 
>  drivers/pci/controller/dwc/pci-layerscape-ep.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> index de4c1758a6c3..2c2c9aaa8700 100644
> --- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> +++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> @@ -249,6 +249,8 @@ static int __init ls_pcie_ep_probe(struct
> platform_device *pdev)
> 
>  	pcie->big_endian = of_property_read_bool(dev->of_node, "big-
> endian");
> 
> +	dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
> +
Acked-by:  Roy Zang <Roy.Zang@xxxxxxx>

-R