diff options
| author | Jay Agarwal <jagarwal@nvidia.com> | 2014-03-05 14:14:32 +0530 |
|---|---|---|
| committer | Jay Agarwal <jagarwal@nvidia.com> | 2014-03-05 22:05:03 -0800 |
| commit | 91e4b351b77955b10b525b6b24a736a559e20abd (patch) | |
| tree | 1f2e71cc5d4ba813b633046638011ed12f0b19c6 /drivers/pci/host | |
| parent | 3b0028c7d9017bfc5a08f7a38b868f0e9eb566e7 (diff) | |
pcie: host: tegra: Add pcie xclk assert/de-assert
Bug 1415344
Change-Id: I83b4776dda302a38969dcf8337c883309db622c7
Signed-off-by: Jay Agarwal <jagarwal@nvidia.com>
Reviewed-on: http://git-master/r/377634
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Diffstat (limited to 'drivers/pci/host')
| -rw-r--r-- | drivers/pci/host/pci-tegra.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index af8f29face1d..52e7a4c14fe8 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -1012,6 +1012,9 @@ static int tegra_pcie_enable_controller(void) /* Disable all execptions */ afi_writel(0, AFI_FPCI_ERROR_MASKS); + /* Take the PCIe interface module out of reset */ + tegra_periph_reset_deassert(tegra_pcie.pcie_xclk); + /* deassert PEX reset signal */ for (i = 0; i < ARRAY_SIZE(pex_controller_registers); i++) { val = afi_readl(pex_controller_registers[i]); @@ -1111,6 +1114,8 @@ static int tegra_pcie_power_ungate(void) pr_err("PCIE: powerup sequence failed: %d\n", err); return err; } + + tegra_periph_reset_assert(tegra_pcie.pcie_xclk); err = clk_prepare_enable(tegra_pcie.pcie_mselect); if (err) { pr_err("PCIE: mselect clk enable failed: %d\n", err); |