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| author |   Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com> | 2025-09-23 16:56:52 +0530 |
|---|---|---|
| committer |   Manivannan Sadhasivam <mani@kernel.org> | 2025-09-25 18:33:52 +0530 |
| commit | f6fd357f7afbeb34a633e5688a23b9d7eb49d558 (patch) | |
| tree | 15838c883e2704d94c5415ba4f6e239bbd931777 /drivers/pci/controller/dwc/pcie-designware.c | |
| parent | PCI: dwc: Add support for ELBI resource mapping (diff) | |
| download | wireguard-linux-f6fd357f7afbeb34a633e5688a23b9d7eb49d558.tar.xz wireguard-linux-f6fd357f7afbeb34a633e5688a23b9d7eb49d558.zip | |
PCI: dwc: Prepare the driver for enabling ECAM mechanism using iATU 'CFG Shift Feature'
In order to enable PCIe ECAM mechanism in DWC driver as per the 'CFG Shift
Feature' documented in Designware databook r5.20a, sec 3.10.10.3, prepare
the driver to handle the one time iATU setup and creating ECAM window.
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
[mani: splitted the preparatory code into a separate commit for bisectability]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20250923-controller-dwc-ecam-v10-2-e84390ba75fa@kernel.org
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-designware.c')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 93da8a26c931..ee8caae1edbd 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -575,7 +575,7 @@ int dw_pcie_prog_outbound_atu(struct dw_pcie *pci, val = dw_pcie_enable_ecrc(val); dw_pcie_writel_atu_ob(pci, atu->index, PCIE_ATU_REGION_CTRL1, val); - val = PCIE_ATU_ENABLE; + val = PCIE_ATU_ENABLE | atu->ctrl2; if (atu->type == PCIE_ATU_TYPE_MSG) { /* The data-less messages only for now */ val |= PCIE_ATU_INHIBIT_PAYLOAD | atu->code; |