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277743ef61
linux/drivers/pci/host
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Rajat Jain 277743ef61 PCI: rockchip: Increase the Max Credit update interval 
Increase the likelihood of link state to automatically go to L1 and save
some power.

The default credit update interval of 7.5 us results in the rootport
sending UpdateFC-P and UpdateFC-NP packets too often, thus resulting in the
link never going to L1, and always staying in L0/L0s.  The value 24 us was
chosen after some experiments and peeking over the PCIe bus to see that we
do enter L1 substate when there is not enough traffic on the PCIe bus.

Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
2016-10-04 12:16:03 -05:00
..
Kconfig PCI: rockchip: Add Rockchip PCIe controller support 2016-09-03 11:41:09 -05:00
Makefile PCI: rockchip: Add Rockchip PCIe controller support 2016-09-03 11:41:09 -05:00
pci-aardvark.c Merge branches 'pci/host-aardvark', 'pci/host-altera', 'pci/host-dra7xx', 'pci/host-hv', 'pci/host-vmd' and 'pci/host-xilinx' into next 2016-08-01 12:32:13 -05:00
pci-dra7xx.c PCI: dra7xx: Fix return value in case of error 2016-07-25 12:29:51 -05:00
pci-exynos.c PCI: designware: Add generic dw_pcie_wait_for_link() 2016-03-15 08:50:45 -05:00
pci-host-common.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pci-host-generic.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pci-hyperv.c PCI: hv: Fix interrupt cleanup path 2016-07-25 12:33:36 -05:00
pci-imx6.c PCI: imx6: Implement reset sequence for i.MX6+ 2016-05-02 14:33:17 -05:00
pci-keystone-dw.c PCI: keystone: Add error IRQ handler 2016-04-14 14:40:42 -05:00
pci-keystone.c PCI: keystone: Make explicitly non-modular 2016-08-01 12:22:50 -05:00
pci-keystone.h PCI: keystone: Add error IRQ handler 2016-04-14 14:40:42 -05:00
pci-layerscape.c PCI: layerscape: Make explicitly non-modular 2016-08-01 12:22:50 -05:00
pci-mvebu.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pci-rcar-gen2.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pci-tegra.c Merge branch 'pci/host-tegra' into next 2016-08-01 12:25:37 -05:00
pci-thunder-ecam.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pci-thunder-pem.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pci-versatile.c PCI: versatile: Simplify host bridge window iteration 2016-06-25 07:44:24 -05:00
pci-xgene-msi.c irqdomain/msi: Use fwnode instead of of_node 2015-10-13 19:01:25 +02:00
pci-xgene.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pcie-altera-msi.c PCI changes for the v4.4 merge window: 2015-11-06 11:29:53 -08:00
pcie-altera.c Merge branches 'pci/host-aardvark', 'pci/host-altera', 'pci/host-dra7xx', 'pci/host-hv', 'pci/host-vmd' and 'pci/host-xilinx' into next 2016-08-01 12:32:13 -05:00
pcie-armada8k.c PCI: armada8k: Make explicitly non-modular 2016-08-01 12:22:50 -05:00
pcie-artpec6.c PCI: artpec6: Make explicitly non-modular 2016-08-01 12:22:50 -05:00
pcie-designware-plat.c PCI: designware-plat: Make it explicitly non-modular 2016-08-01 12:22:50 -05:00
pcie-designware.c PCI: designware: Simplify host bridge window iteration 2016-06-20 14:06:05 -05:00
pcie-designware.h PCI: designware: Add generic dw_pcie_wait_for_link() 2016-03-15 08:50:45 -05:00
pcie-hisi.c PCI: hisi: Make explicitly non-modular 2016-08-01 12:22:50 -05:00
pcie-iproc-bcma.c PCI: iproc: Add iProc PCIe MSI support 2016-01-06 18:04:35 -06:00
pcie-iproc-msi.c PCI: iproc: Add iProc PCIe MSI support 2016-01-06 18:04:35 -06:00
pcie-iproc-platform.c PCI: iproc: Add iProc PCIe MSI support 2016-01-06 18:04:35 -06:00
pcie-iproc.c PCI: iproc: Request host bridge window resources 2016-06-20 14:06:05 -05:00
pcie-iproc.h PCI: iproc: Add iProc PCIe MSI support 2016-01-06 18:04:35 -06:00
pcie-qcom.c PCI: designware: Add generic dw_pcie_wait_for_link() 2016-03-15 08:50:45 -05:00
pcie-rcar.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pcie-rockchip.c PCI: rockchip: Increase the Max Credit update interval 2016-10-04 12:16:03 -05:00
pcie-spear13xx.c PCI: designware: Add generic dw_pcie_wait_for_link() 2016-03-15 08:50:45 -05:00
pcie-xilinx-nwl.c PCI: xilinx-nwl: Use dev_printk() when possible 2016-06-20 14:06:06 -05:00
pcie-xilinx.c Merge branches 'pci/host-aardvark', 'pci/host-altera', 'pci/host-dra7xx', 'pci/host-hv', 'pci/host-vmd' and 'pci/host-xilinx' into next 2016-08-01 12:32:13 -05:00