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path: root/drivers/pci/controller/dwc/pcie-artpec6.c
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Diffstat (limited to 'drivers/pci/controller/dwc/pcie-artpec6.c')
-rw-r--r--drivers/pci/controller/dwc/pcie-artpec6.c48
1 files changed, 5 insertions, 43 deletions
diff --git a/drivers/pci/controller/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c
index 97d50bb50f06..929448e9e0bc 100644
--- a/drivers/pci/controller/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
@@ -44,13 +44,6 @@ struct artpec_pcie_of_data {
static const struct of_device_id artpec6_pcie_of_match[];
-/* PCIe Port Logic registers (memory-mapped) */
-#define PL_OFFSET 0x700
-
-#define ACK_F_ASPM_CTRL_OFF (PL_OFFSET + 0xc)
-#define ACK_N_FTS_MASK GENMASK(15, 8)
-#define ACK_N_FTS(x) (((x) << 8) & ACK_N_FTS_MASK)
-
/* ARTPEC-6 specific registers */
#define PCIECFG 0x18
#define PCIECFG_DBG_OEN BIT(24)
@@ -289,30 +282,6 @@ static void artpec6_pcie_init_phy(struct artpec6_pcie *artpec6_pcie)
}
}
-static void artpec6_pcie_set_nfts(struct artpec6_pcie *artpec6_pcie)
-{
- struct dw_pcie *pci = artpec6_pcie->pci;
- u32 val;
-
- if (artpec6_pcie->variant != ARTPEC7)
- return;
-
- /*
- * Increase the N_FTS (Number of Fast Training Sequences)
- * to be transmitted when transitioning from L0s to L0.
- */
- val = dw_pcie_readl_dbi(pci, ACK_F_ASPM_CTRL_OFF);
- val &= ~ACK_N_FTS_MASK;
- val |= ACK_N_FTS(180);
- dw_pcie_writel_dbi(pci, ACK_F_ASPM_CTRL_OFF, val);
-
- /*
- * Set the Number of Fast Training Sequences that the core
- * advertises as its N_FTS during Gen2 or Gen3 link training.
- */
- dw_pcie_link_set_n_fts(pci, 180);
-}
-
static void artpec6_pcie_assert_core_reset(struct artpec6_pcie *artpec6_pcie)
{
u32 val;
@@ -346,29 +315,23 @@ static void artpec6_pcie_deassert_core_reset(struct artpec6_pcie *artpec6_pcie)
usleep_range(100, 200);
}
-static void artpec6_pcie_enable_interrupts(struct artpec6_pcie *artpec6_pcie)
-{
- struct dw_pcie *pci = artpec6_pcie->pci;
- struct pcie_port *pp = &pci->pp;
-
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(pp);
-}
-
static int artpec6_pcie_host_init(struct pcie_port *pp)
{
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct artpec6_pcie *artpec6_pcie = to_artpec6_pcie(pci);
+ if (artpec6_pcie->variant == ARTPEC7) {
+ pci->n_fts[0] = 180;
+ pci->n_fts[1] = 180;
+ }
artpec6_pcie_assert_core_reset(artpec6_pcie);
artpec6_pcie_init_phy(artpec6_pcie);
artpec6_pcie_deassert_core_reset(artpec6_pcie);
artpec6_pcie_wait_for_phy(artpec6_pcie);
- artpec6_pcie_set_nfts(artpec6_pcie);
dw_pcie_setup_rc(pp);
artpec6_pcie_establish_link(pci);
dw_pcie_wait_for_link(pci);
- artpec6_pcie_enable_interrupts(artpec6_pcie);
+ dw_pcie_msi_init(pp);
return 0;
}
@@ -412,7 +375,6 @@ static void artpec6_pcie_ep_init(struct dw_pcie_ep *ep)
artpec6_pcie_init_phy(artpec6_pcie);
artpec6_pcie_deassert_core_reset(artpec6_pcie);
artpec6_pcie_wait_for_phy(artpec6_pcie);
- artpec6_pcie_set_nfts(artpec6_pcie);
for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
dw_pcie_ep_reset_bar(pci, bar);