Hi Thierry,
I am working to add a PCIE driver on a ARM platform and I want to use DT
to specify the device configuration. I see that your patch set is doing
similar thing for Tegra. Would you mind if I take a peak at your code
base? Do you have your code posted to an external git repo?
Thanks.
Murali
On 1/9/2013 3:43 PM, Thierry Reding wrote:
This patch series contains an almost complete rewrite of the Tegra PCIe
driver. The code is moved to the drivers/pci/host directory and turned
into a proper platform driver, adding MSI and DT support while at it.
Other PCI host controller drivers can be added to that directory in an
attempt to make it easier to factor out common code.
Patches 1 to 4 add generic OF helpers to parse a PCI node's ranges
property as well as obtain the bus, device and function numbers from a
node's reg property.
Patch 5 provides an implementation of a cache for I/O mappings. This can
be used in situations where a large physical memory region needs to be
ioremap()'ed. On Tegra, the PCIe standard and extended configuration
spaces can be accessed through a 256 MiB window. Mapping that in one
chunk is wasteful and may not always work because the vmalloc area may
not be large enough. The implementation in this patch uses an LRU based
approach to map a limited amount of pages on an as-needed basis.
Patches 6 and 7 prepare the ARM PCI code to enable PCI host controller
drivers to load after the init stage, which can happen due to deferred
probing, and to allow private data to be passed for each controller.
Patches 8 and 9 move some of the Tegra specific code around to allow it
to be used from outside the arch/arm/mach-tegra directory.
Patch 10 moves the Tegra PCIe controller driver to the drivers/pci/host
directory and turns it into a proper platform driver. It also adds MSI
(based on patches by NVIDIA) and DT support.
Patches 11 to 14 add device tree based probing for the TEC, Harmony and
TrimSlice boards.
Thierry
Andrew Murray (1):
of/pci: Provide support for parsing PCI DT ranges property
Thierry Reding (13):
of/pci: Add of_pci_get_devfn() function
of/pci: Add of_pci_get_bus() function
of/pci: Add of_pci_parse_bus_range() function
lib: Add I/O map cache implementation
ARM: pci: Keep pci_common_init() around after init
ARM: pci: Allow passing per-controller private data
ARM: tegra: Move tegra_pcie_xclk_clamp() to PMC
ARM: tegra: Move pmc.h to include/mach
PCI: tegra: Move PCIe driver to drivers/pci/host
ARM: tegra: tamonten: Add PCIe support
ARM: tegra: tec: Add PCIe support
ARM: tegra: harmony: Initialize PCIe from DT
ARM: tegra: trimslice: Initialize PCIe from DT
.../bindings/pci/nvidia,tegra20-pcie.txt | 115 ++
arch/arm/Kconfig | 2 +
arch/arm/boot/dts/tegra20-harmony.dts | 20 +-
arch/arm/boot/dts/tegra20-tamonten.dtsi | 2 +-
arch/arm/boot/dts/tegra20-tec.dts | 198 +++
arch/arm/boot/dts/tegra20-trimslice.dts | 12 +
arch/arm/boot/dts/tegra20.dtsi | 45 +
arch/arm/include/asm/mach/pci.h | 1 +
arch/arm/kernel/bios32.c | 9 +-
arch/arm/mach-tegra/Kconfig | 5 -
arch/arm/mach-tegra/Makefile | 3 -
arch/arm/mach-tegra/board-dt-tegra20.c | 24 -
arch/arm/mach-tegra/board-harmony-pcie.c | 84 --
arch/arm/mach-tegra/board.h | 4 +-
arch/arm/mach-tegra/common.c | 2 +-
arch/arm/mach-tegra/include/mach/pmc.h | 24 +
arch/arm/mach-tegra/iomap.h | 3 -
arch/arm/mach-tegra/pcie.c | 887 -------------
arch/arm/mach-tegra/pmc.c | 16 +
arch/arm/mach-tegra/pmc.h | 23 -
drivers/of/address.c | 63 +
drivers/of/of_pci.c | 78 +-
drivers/pci/Kconfig | 2 +
drivers/pci/Makefile | 3 +
drivers/pci/host/Kconfig | 8 +
drivers/pci/host/Makefile | 1 +
drivers/pci/host/pci-tegra.c | 1322 ++++++++++++++++++++
include/linux/io.h | 12 +
include/linux/of_address.h | 9 +
include/linux/of_pci.h | 3 +
lib/ioremap.c | 266 ++++
31 files changed, 2203 insertions(+), 1043 deletions(-)
create mode 100644
Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
delete mode 100644 arch/arm/mach-tegra/board-harmony-pcie.c
create mode 100644 arch/arm/mach-tegra/include/mach/pmc.h
delete mode 100644 arch/arm/mach-tegra/pcie.c
delete mode 100644 arch/arm/mach-tegra/pmc.h
create mode 100644 drivers/pci/host/Kconfig
create mode 100644 drivers/pci/host/Makefile
create mode 100644 drivers/pci/host/pci-tegra.c
_______________________________________________
devicetree-discuss mailing list
[email protected]
https://lists.ozlabs.org/listinfo/devicetree-discuss
