diff options
| author | Thierry Reding <treding@nvidia.com> | 2014-03-31 17:14:47 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-06-04 09:30:47 +0200 |
| commit | 217eb933bd14e8c2a105e1272a69f4043b67eefc (patch) | |
| tree | 198a59bfc517c88c981d5122a62eeb664211e629 /drivers | |
| parent | abafd2239131809f83f84085105364b3d96fda31 (diff) | |
PCI: tegra: Clear CLKREQ# enable on port disable
When a root port is disabled, disable the CLKREQ# signal if available.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers')
| -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 02a2809d6bc..83ec6e85a41 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -571,6 +571,7 @@ static void tegra_pcie_port_enable(struct tegra_pcie_port *port) static void tegra_pcie_port_disable(struct tegra_pcie_port *port) { + const struct tegra_pcie_soc_data *soc = port->pcie->soc_data; unsigned long ctrl = tegra_pcie_port_get_pex_ctrl(port); unsigned long value; @@ -581,6 +582,10 @@ static void tegra_pcie_port_disable(struct tegra_pcie_port *port) /* disable reference clock */ value = afi_readl(port->pcie, ctrl); + + if (soc->has_pex_clkreq_en) + value &= ~AFI_PEX_CTRL_CLKREQ_EN; + value &= ~AFI_PEX_CTRL_REFCLK_EN; afi_writel(port->pcie, value, ctrl); } |