diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/dwc/pcie-qcom.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pci/dwc/pcie-qcom.c b/drivers/pci/dwc/pcie-qcom.c index fbc79a5274c6..2a4a66754878 100644 --- a/drivers/pci/dwc/pcie-qcom.c +++ b/drivers/pci/dwc/pcie-qcom.c @@ -51,6 +51,12 @@ #define PCIE20_ELBI_SYS_CTRL 0x04 #define PCIE20_ELBI_SYS_CTRL_LT_ENABLE BIT(0) +#define PCIE20_AXI_MSTR_RESP_COMP_CTRL0 0x818 +#define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_2K 0x4 +#define CFG_REMOTE_RD_REQ_BRIDGE_SIZE_4K 0x5 +#define PCIE20_AXI_MSTR_RESP_COMP_CTRL1 0x81c +#define CFG_BRIDGE_SB_INIT BIT(0) + #define PCIE20_CAP 0x70 #define PERST_DELAY_US 1000 @@ -336,6 +342,13 @@ static int qcom_pcie_init_v0(struct qcom_pcie *pcie) /* wait for clock acquisition */ usleep_range(1000, 1500); + + /* Set the Max TLP size to 2K, instead of using default of 4K */ + writel(CFG_REMOTE_RD_REQ_BRIDGE_SIZE_2K, + pci->dbi_base + PCIE20_AXI_MSTR_RESP_COMP_CTRL0); + writel(CFG_BRIDGE_SB_INIT, + pci->dbi_base + PCIE20_AXI_MSTR_RESP_COMP_CTRL1); + return 0; err_deassert_ahb: |