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| author | Joao Pinto <Joao.Pinto@synopsys.com> | 2016-03-10 23:44:35 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-03-15 16:50:45 +0300 |
| commit | 886bc5ceb5cc3ad4b219502d72b277e3c3255a32 (patch) | |
| tree | 2648e30863433834dd7df7411f677f1a8c7888f1 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | c1678ffcdea25afe4fbbebfab13d65a7db5458fb (diff) | |
| download | linux-886bc5ceb5cc3ad4b219502d72b277e3c3255a32.tar.xz | |
PCI: designware: Add generic dw_pcie_wait_for_link()
Several DesignWare-based drivers (dra7xx, exynos, imx6, keystone, qcom, and
spear13xx) had similar loops waiting for the link to come up.
Add a generic dw_pcie_wait_for_link() for use by all these drivers so the
waiting is done consistently, e.g., always using usleep_range() rather than
mdelay() and using similar timeouts and retry counts.
Note that this changes the Keystone link training/wait for link strategy,
so we initiate link training, then wait longer for the link to come up
before re-initiating link training.
[bhelgaas: changelog, split into its own patch, update pci-keystone.c, pcie-qcom.c]
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions