diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2023-10-18 11:56:22 +0300 |
|---|---|---|
| committer | Krzysztof Wilczyński <kwilczynski@kernel.org> | 2023-10-20 15:12:56 +0300 |
| commit | 1896d17f916819b8b5d145b4feef77109e78c435 (patch) | |
| tree | 8653ef506eef23d9f79aa1fcdd87707ac4c79853 /drivers/pci/controller/dwc/pcie-designware.h | |
| parent | 7873b49b41b92edb3395bff9a528eaf89da5e41c (diff) | |
| download | linux-1896d17f916819b8b5d145b4feef77109e78c435.tar.xz | |
PCI: dwc: Add EDMA_UNROLL capability flag
Renesas R-Car Gen4 PCIe controllers have an unexpected register value in
the eDMA CTRL register.
So, add a new capability flag "EDMA_UNROLL" which would force the unrolled
eDMA mapping for the problematic device.
Suggested-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/linux-pci/20231018085631.1121289-7-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-designware.h')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 6189884b4efa..e10f7e18b13a 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -51,8 +51,9 @@ /* DWC PCIe controller capabilities */ #define DW_PCIE_CAP_REQ_RES 0 -#define DW_PCIE_CAP_IATU_UNROLL 1 -#define DW_PCIE_CAP_CDM_CHECK 2 +#define DW_PCIE_CAP_EDMA_UNROLL 1 +#define DW_PCIE_CAP_IATU_UNROLL 2 +#define DW_PCIE_CAP_CDM_CHECK 3 #define dw_pcie_cap_is(_pci, _cap) \ test_bit(DW_PCIE_CAP_ ## _cap, &(_pci)->caps) |