lkml.org 
[lkml]   [2020]   [Jan]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH V2 0/5] Add support to defer core initialization
Date
EPC/DesignWare core endpoint subsystems assume that the core registers are
available always for SW to initialize. But, that may not be the case always.
For example, Tegra194 hardware has the core running on a clock that is derived
from reference clock that is coming into the endpoint system from host.
Hence core is made available asynchronously based on when host system is going
for enumeration of devices. To accommodate this kind of hardwares, support is
required to defer the core initialization until the respective platform driver
informs the EPC/DWC endpoint sub-systems that the core is indeed available for
initiaization. This patch series is attempting to add precisely that.
This series is based on Kishon's patch that adds notification mechanism
support from EPC to EPF @ http://patchwork.ozlabs.org/patch/1109884/

Vidya Sagar (5):
PCI: endpoint: Add core init notifying feature
PCI: dwc: Refactor core initialization code for EP mode
PCI: endpoint: Add notification for core init completion
PCI: dwc: Add API to notify core initialization completion
PCI: pci-epf-test: Add support to defer core initialization

.../pci/controller/dwc/pcie-designware-ep.c | 79 +++++++-----
drivers/pci/controller/dwc/pcie-designware.h | 11 ++
drivers/pci/endpoint/functions/pci-epf-test.c | 118 ++++++++++++------
drivers/pci/endpoint/pci-epc-core.c | 19 ++-
include/linux/pci-epc.h | 2 +
include/linux/pci-epf.h | 5 +
6 files changed, 164 insertions(+), 70 deletions(-)

--
2.17.1

\
 
 \ /
  Last update: 2020-01-03 11:08    [W:0.078 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site