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PCI: stm32: Fix EP page_size alignment

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pci_epc_mem_alloc_addr() allocates a CPU address from the ATU window phys
base and a page number. Set the ep->page_size so the resulting CPU address
is correctly aligned with the ATU required alignment.

Fixes: 151f3d29ba ("PCI: stm32-ep: Add PCIe Endpoint support for STM32MP25")
Signed-off-by: Christian Bruel <christian.bruel@foss.st.com>
[mani: added fixes tag]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251114-atu_align_ep-v1-1-88da5366fa04@foss.st.com
This commit is contained in:
Christian Bruel 2025-11-14 09:08:05 +01:00 committed by Bjorn Helgaas
parent fa81d60990
commit ff529a9307
1 changed files with 2 additions and 0 deletions
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2
drivers/pci/controller/dwc/pcie-stm32-ep.c
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@ -214,6 +214,8 @@ static int stm32_add_pcie_ep(struct stm32_pcie *stm32_pcie,
ep->ops = &stm32_pcie_ep_ops;
ep->page_size = stm32_pcie_epc_features.align;
ret = dw_pcie_ep_init(ep);
if (ret) {
dev_err(dev, "Failed to initialize ep: %d\n", ret);