diff options
| author | Manikanta Maddireddy <mmaddireddy@nvidia.com> | 2019-06-18 20:01:46 +0200 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2019-06-20 18:20:25 +0200 |
| commit | c635a815c8c73a985b0e723efd4ffd70e99729fc (patch) | |
| tree | d43c63704de1d8d17348dd2892f1842372ae982d | |
| parent | PCI: tegra: Add PCIe Gen2 link speed support (diff) | |
| download | linux-c635a815c8c73a985b0e723efd4ffd70e99729fc.tar.xz linux-c635a815c8c73a985b0e723efd4ffd70e99729fc.zip | |
PCI: tegra: Advertise PCIe Advanced Error Reporting (AER) capability
Default root port setting hides AER capability. This patch enables the
advertisement of AER capability by root port.
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
| -rw-r--r-- | drivers/pci/controller/pci-tegra.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c index dfb13aee6322..c9687b5a6794 100644 --- a/drivers/pci/controller/pci-tegra.c +++ b/drivers/pci/controller/pci-tegra.c @@ -180,6 +180,9 @@ #define RP_VEND_XP 0x00000f00 #define RP_VEND_XP_DL_UP (1 << 30) +#define RP_VEND_CTL1 0x00000f48 +#define RP_VEND_CTL1_ERPT (1 << 13) + #define RP_VEND_CTL2 0x00000fa8 #define RP_VEND_CTL2_PCA_ENABLE (1 << 7) @@ -479,6 +482,16 @@ static void tegra_pcie_port_reset(struct tegra_pcie_port *port) afi_writel(port->pcie, value, ctrl); } +static void tegra_pcie_enable_rp_features(struct tegra_pcie_port *port) +{ + u32 value; + + /* Enable AER capability */ + value = readl(port->base + RP_VEND_CTL1); + value |= RP_VEND_CTL1_ERPT; + writel(value, port->base + RP_VEND_CTL1); +} + static void tegra_pcie_port_enable(struct tegra_pcie_port *port) { unsigned long ctrl = tegra_pcie_port_get_pex_ctrl(port); @@ -503,6 +516,8 @@ static void tegra_pcie_port_enable(struct tegra_pcie_port *port) value |= RP_VEND_CTL2_PCA_ENABLE; writel(value, port->base + RP_VEND_CTL2); } + + tegra_pcie_enable_rp_features(port); } static void tegra_pcie_port_disable(struct tegra_pcie_port *port) |