- 06 8月, 2016 1 次提交
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由 Kees Cook 提交于
Instead of a ramoops-specific node, use a child node of /reserved-memory. This requires that of_platform_device_create() be explicitly called for the node, though, since "/reserved-memory" does not have its own "compatible" property. Suggested-by: NRob Herring <robh@kernel.org> Signed-off-by: NKees Cook <keescook@chromium.org> Acked-by: NRob Herring <robh@kernel.org>
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- 19 7月, 2016 1 次提交
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由 Rob Herring 提交于
Clean-up all the DT printk functions to use common pr_fmt prefix. Some print statements such as kmalloc errors were redundant, so just drop those. Cc: Frank Rowand <frowand.list@gmail.com> Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Reviewed-by: NFrank Rowand <frank.rowand@am.sony.com> Signed-off-by: NRob Herring <robh@kernel.org>
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- 24 6月, 2016 2 次提交
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由 Kefeng Wang 提交于
This reverts commit b80443c2. After covering to use helper of_platform_default_populate() to populate the default bus, no need to export of_default_bus_match_table anymore. Reviewed-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Grant Likely <grant.likely@linaro.org> Signed-off-by: NKefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: NRob Herring <robh@kernel.org>
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由 Kefeng Wang 提交于
The arch code calls of_platform_populate() with default match table when it wants to populate default bus. This patch introduce a new of_platform_default_populate_init() and make it arch_initcall_sync(it should be later than some iommu configration, eg, of_iommu_init() and swiotlb_late_init in arm64), then we can finish above job in common method. In order to avoid the default bus being populated twice, simply checking the flag of bus node whether has be set OF_POPULATED_BUS or not. After that, we can safely remove the caller in arch code. Btw, add debug print in of_platform_populate(), and use __func__ to print function's name of of_platform_bus_create(). Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Grant Likely <grant.likely@linaro.org> Signed-off-by: NKefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: NRob Herring <robh@kernel.org>
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- 15 4月, 2016 1 次提交
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由 Tony Lindgren 提交于
We currently try to match of_dev_auxdata based on compatible, IO address, and device name. But in some cases we have multiple instances of drivers that can use the same auxdata. Let's add an additional secondary lookup for generic compatible match for auxdata if no device specific match is found. This does not change the existing matching, and still allows adding device specific auxdata. This simplifies things as specifying the IO address and device name is prone errors as it requires maintaining an in kernel database for each SoC. To specify a generic match, all that is needed is to add a OF_DEV_AUXDATA entry with no device instance specified: OF_DEV_AUXDATA("pinctrl-single", 0, NULL, &pcs_pdata), As the auxdata is already initialized only for the booted SoC, there's not much of a chance of getting things wrong. Let's also fix two checkpatch warnings while at it to add a space before parenthesis in the for loop, and remove a comparison to NULL by using !auxdata->compatible. Acked-by: NRob Herring <robh@kernel.org> Signed-off-by: NTony Lindgren <tony@atomide.com>
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- 05 1月, 2016 1 次提交
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由 Masahiro Yamada 提交于
Currently, drivers/bus/uniphier-system-bus.c is kept from being a module due to the unresolved reference to of_default_bus_match_table. Refer to commit 326ea45a ("bus: uniphier: allow only built-in driver"). Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: NRob Herring <robh@kernel.org>
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- 22 10月, 2015 1 次提交
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由 Julia Lawall 提交于
for_each_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ local idexpression n; expression root,e; @@ for_each_child_of_node(root,n) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? break; ) ... } ... when != n // </smpl> Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: NRob Herring <robh@kernel.org>
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- 26 8月, 2015 1 次提交
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由 Hauke Mehrtens 提交于
When a default bus like the simple-bus should be used someone had to call of_platform_populate() with the default match table. This match table was not exported, so it is impossible for code build as a module to use this. Instead of exporting of_default_bus_match_table, add a new function which uses this default match table and populates the bus. Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de> Signed-off-by: NRob Herring <robh@kernel.org>
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- 30 7月, 2015 1 次提交
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由 Marc Zyngier 提交于
As for PCI, we're able to populate the msi_domain field at probe time, provided that the device tree has an "msi-parent" property. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Yijing Wang <wangyijing@huawei.com> Cc: Ma Jun <majun258@huawei.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Duc Dang <dhdang@apm.com> Cc: Hanjun Guo <hanjun.guo@linaro.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1438091186-10244-9-git-send-email-marc.zyngier@arm.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 10 6月, 2015 1 次提交
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由 Greg Kroah-Hartman 提交于
This reverts commit b6d2233f as it breaks working machines. Cc: Rob Herring <robh@kernel.org> Cc: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 01 6月, 2015 1 次提交
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由 Ricardo Ribalda Delgado 提交于
of_platform_device_create_pdata() was using of_device_add() to create the devices, but of_platform_device_destroy was using platform_device_unregister() to free them. of_device_add(), do not call insert_resource(), which initializes the parent field of the resource structure, needed by release_resource(), called by of_platform_device_destroy(). This leads to a NULL pointer deference. Instead of fixing the NULL pointer deference, what could hide other bugs, this patch, replaces of_device_add() with platform_device_data(). Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com> Acked-by: NRob Herring <robh@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 11 5月, 2015 1 次提交
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由 Linus Walleij 提交于
This defines a new compatible option for MFD devices "simple-mfd" that will make the OF core spawn child devices for all subnodes of that MFD device. It is optional but handy for things like syscon and possibly other simpler MFD devices. Since there was no file to put the documentation in, I took this opportunity to make a small writeup on MFD devices and add the compatible definition there. Suggested-by: NLee Jones <lee.jones@linaro.org> Acked-by: NLee Jones <lee.jones@linaro.org> Acked-by: NAntoine Tenart <antoine.tenart@free-electrons.com> Acked-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Devicetree <devicetree@vger.kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
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- 04 3月, 2015 2 次提交
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由 Murali Karicheri 提交于
Move of_dma_configure() to device.c so it can be re-used for PCI devices to obtain DMA configuration from DT. Also add a second argument so that for PCI, the DT node of root bus host bridge can be used to obtain the DMA configuration for the slave PCI device. Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> (AMD Seattle) Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NWill Deacon <will.deacon@arm.com> Acked-by: NRob Herring <robh+dt@kernel.org> CC: Joerg Roedel <joro@8bytes.org> CC: Grant Likely <grant.likely@linaro.org> CC: Russell King <linux@arm.linux.org.uk> CC: Arnd Bergmann <arnd@arndb.de>
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由 Murali Karicheri 提交于
of_iommu_configure() is called from of_dma_configure() to setup iommu ops using DT property. This API is currently used for platform devices for which DMA configuration (including IOMMU ops) may come from the device's parent. To extend this functionality for PCI devices, this API needs to take a parent node ptr as an argument instead of assuming device's parent. This is needed since for PCI, the DMA configuration may be defined in the DT node of the root bus bridge's parent device. Currently only dma-range is used for PCI and IOMMU is not supported. Return error if the device is PCI. Add "parent" parameter (a struct device_node *) to of_iommu_configure(). Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> (AMD Seattle) Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NRob Herring <robh+dt@kernel.org> Acked-by: NWill Deacon <will.deacon@arm.com> CC: Joerg Roedel <joro@8bytes.org> CC: Grant Likely <grant.likely@linaro.org> CC: Russell King <linux@arm.linux.org.uk> CC: Arnd Bergmann <arnd@arndb.de>
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- 22 1月, 2015 2 次提交
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由 Pantelis Antoniou 提交于
When using overlays with drivers calling of_populate the notifier will try to create the device twice. Using the populated bit before proceeding protects against this. Signed-off-by: NPantelis Antoniou <pantelis.antoniou@konsulko.com> Signed-off-by: NGrant Likely <grant.likely@linaro.org>
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由 Will Deacon 提交于
Now that we can create and attach to IOMMU domains via of_dma_configure, make sure we give the architecture a chance to tear them down when a platform or amba device is destroyed. Acked-by: NRob Herring <robh@kernel.org> Reported-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NOlof Johansson <olof@lixom.net>
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- 14 1月, 2015 1 次提交
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由 Murali Karicheri 提交于
fix the dev_dbg to display the offset which is the calculated dma_pfn_offset value and set later in the code. Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com> Signed-off-by: NRob Herring <robh@kernel.org>
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- 02 12月, 2014 2 次提交
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由 Will Deacon 提交于
This patch extends of_dma_configure so that it sets up the IOMMU for a device, as well as the coherent/non-coherent DMA mapping ops. Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com> Tested-by: NRobin Murphy <robin.murphy@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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由 Will Deacon 提交于
set_arch_dma_coherent_ops is called from of_dma_configure in order to swizzle the architectural dma-mapping functions over to a cache-coherent implementation. This is currently implemented only for ARM. In anticipation of re-using this mechanism for IOMMU-backed dma-mapping ops too, this patch replaces the function with a broader arch_setup_dma_ops callback which will be extended in future. Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com> Tested-by: NRobin Murphy <robin.murphy@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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- 25 11月, 2014 1 次提交
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由 Pantelis Antoniou 提交于
Add OF notifier handler needed for creating/destroying platform devices according to dynamic runtime changes in the DT live tree. Signed-off-by: NPantelis Antoniou <pantelis.antoniou@konsulko.com> Signed-off-by: NGrant Likely <grant.likely@linaro.org>
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- 20 11月, 2014 1 次提交
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由 Grant Likely 提交于
of_platform_populate() takes a subset of the device tree and turns it into a set of platform_devices. At the same time it sets the OF_POPULATED_BUS flag in each bus nodes so that of_platform_depopulate() can undo the operation at a later time. However, it doesn't set the flag on the root of the population tree which means that dynamic modifications of the device tree at runtime will not create/destroy devices correctly. Fix of_platform_populate() to set the OF_POPULATED_BUS flag on the node it is called with. Signed-off-by: NGrant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Cc: Pawel Moll <pawel.moll@arm.com>
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- 05 11月, 2014 1 次提交
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由 Grant Likely 提交于
Currently the devices created by drivers/of/platform.c get created at the root of /sys/devices. This goes against the typical pattern for sysfs where the top level /sys/devices structure contains categories of devices, and the structure of devices is placed below that. To fix this, make the code in drivers/of/platform.c follow the drivers/base/platform.c behaviour, and use &platform_bus as the default parent for all new platform_devices and amba_devices. This change has been discussed for a long time, but nobody has actually acted on it. Userspace code that expects to find devices under a fixed /sys/devices/... path will be affected. It isn't /supposed/ to do that, but if anyone complains then I'll add a default-off workaround option to put them back into the root. Signed-off-by: NGrant Likely <grant.likely@linaro.org> Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de>
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- 22 9月, 2014 1 次提交
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由 Robin Murphy 提交于
Commit 591c1e ("of: configure the platform device dma parameters) introduced a common mechanism to configure DMA from DT properties. AMBA devices created from DT can take advantage of this, too. Signed-off-by: NRobin Murphy <robin.murphy@arm.com> Acked-by: NWill Deacon <will.deacon@arm.com> Acked-by: NRob Herring <robh@kernel.org> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 07 7月, 2014 1 次提交
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由 Grant Likely 提交于
of_platform_destroy does not work properly, since the tree population test was iterating on all devices having as its parent the given platform device. The check was intended to check whether any other platform or amba devices created by of_platform_populate were still populated, but instead checked for every kind of device. This is wrong, since platform devices typically create a subsystem regular device and set themselves as parents. Instead, go ahead and call the unregister functions for any devices created with of_platform_populate. The driver core will take care of unbinding drivers, and drivers are responsible for getting rid of any child devices that weren't created by of_platform_populate. Signed-off-by: NGrant Likely <grant.likely@linaro.org> Signed-off-by: NPantelis Antoniou <pantelis.antoniou@konsulko.com>
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- 17 6月, 2014 1 次提交
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由 Guenter Roeck 提交于
Commit bf5db2fb (microblaze: Use generic device.h) removes the microblaze specific pdev_archdata and dma_mask. At the same time, commit 591c1ee4 (of: configure the platform device dma parameters) initializes the just removed field. This causes all microblaze builds to fail. Drop the unnecessary initialization. Cc: Michal Simek <michal.simek@xilinx.com> Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Acked-by: NMichal Simek <monstr@monstr.eu> Signed-off-by: NRob Herring <robh@kernel.org>
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- 04 6月, 2014 1 次提交
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由 Michal Simek 提交于
pdev_archdata dma_mask is completely unused. Use generic device.h Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
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- 23 5月, 2014 2 次提交
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由 Grant Likely 提交于
There is now a way to ensure all platform devices get a unique name when populated from the device tree, and the DCR_NATIVE code path is broken anyway. PowerPC Cell (PS3) is the only platform that actually uses this path. Most likely nobody will notice if it is killed. Remove the code and associated ugly #ifdef. The user-visible impact of this patch is that any DCR device on Cell will get a new name in the /sys/devices hierarchy. Signed-off-by: NGrant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Grant Likely 提交于
The way the driver core is implemented, every device using the same bus type is required to have a unique name because a symlink to each device is created in the appropriate /sys/bus/*/devices directory, and two identical names causes a collision. The current code handles the requirement by using an globally incremented counter that is appended to the device name. It works, but it means any change to device registration will change the assigned numbers. Instead, if we build up the name by using information from the parent nodes, then it can be guaranteed to be unique without adding a random number to the end of it. Signed-off-by: NGrant Likely <grant.likely@linaro.org> Cc: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Cc: Rob Herring <robh@kernel.org>
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- 16 5月, 2014 1 次提交
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由 Pawel Moll 提交于
In "Device Tree powered" systems, platform devices are usually massively populated with of_platform_populate() call, executed at some level of initcalls, either by generic architecture or by platform-specific code. There are situations though where certain devices must be created (and bound with drivers) before all the others. This presents a challenge, as devices created explicitly would be created again by of_platform_populate(). This patch tries to solve that issue in a generic way, adding a "populated" flag for a DT node description. Subsequent of_platform_populate() will skip such nodes (and its children) in a similar way to the non-available ones. This patch also adds of_platform_depopulate() as an operation complementary to the _populate() one. It removes a platform or an amba device populated from the Device Tree, together with its all children (leaving, however, devices without associated of_node untouched) clearing the "populated" flag on the way. Signed-off-by: NPawel Moll <pawel.moll@arm.com> Reviewed-by: NRob Herring <robh@kernel.org> Acked-by: NGrant Likely <grant.likely@linaro.org>
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- 14 5月, 2014 2 次提交
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由 Rob Herring 提交于
of_can_translate_address only checks some conditions for address translation, but does not check other conditions like having range properties. The checks it does do are redundant with __of_address_translate. The only difference is printing a message or not. Since we only have a single caller that does the full translation anyway, just remove of_can_translate_address and quiet the error message. Cc: Grant Likely <grant.likely@linaro.org> Signed-off-by: NRob Herring <robh@kernel.org> Tested-by: NFrank Rowand <frank.rowand@sonymobile.com> Reviewed-by: NFrank Rowand <frank.rowand@sonymobile.com>
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由 Rob Herring 提交于
Using non-translatable addresses in platform device names is wrong because they may not be globally unique. Just use the default naming with a global index if the address cannot be translated instead. of_can_translate_address has the same checks as of_translate_address, so we can remove it here as well. Reported-by: N"Ivan T. Ivanov" <iivanov@mm-sol.com> Cc: Josh Cartwright <joshc@codeaurora.org> Cc: Courtney Cavin <courtney.cavin@sonymobile.com> Cc: Bjorn Andersson <bjorn@kryo.se> Cc: Grant Likely <grant.likely@linaro.org> Signed-off-by: NRob Herring <robh@kernel.org> Tested-by: NIvan T. Ivanov <iivanov@mm-sol.com> Tested-by: NFrank Rowand <frank.rowand@sonymobile.com> Reviewed-by: NFrank Rowand <frank.rowand@sonymobile.com>
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- 07 5月, 2014 1 次提交
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由 Santosh Shilimkar 提交于
Retrieve DMA configuration from DT and setup platform device's DMA parameters. The DMA configuration in DT has to be specified using "dma-ranges" and "dma-coherent" properties if supported. We setup dma_pfn_offset using "dma-ranges" and dma_coherent_ops using "dma-coherent" device tree properties. The set_arch_dma_coherent_ops macro has to be defined by arch if it supports coherent dma_ops. Otherwise, set_arch_dma_coherent_ops() is declared as nop. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Olof Johansson <olof@lixom.net> Cc: Grant Likely <grant.likely@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: NRob Herring <robh@kernel.org> Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
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- 25 4月, 2014 1 次提交
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由 Rob Herring 提交于
Currently we get the following kind of errors if we try to use interrupt phandles to irqchips that have not yet initialized: irq: no irq domain found for /ocp/pinmux@48002030 ! ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at drivers/of/platform.c:171 of_device_alloc+0x144/0x184() Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-00038-g42a9708 #1012 (show_stack+0x14/0x1c) (dump_stack+0x6c/0xa0) (warn_slowpath_common+0x64/0x84) (warn_slowpath_null+0x1c/0x24) (of_device_alloc+0x144/0x184) (of_platform_device_create_pdata+0x44/0x9c) (of_platform_bus_create+0xd0/0x170) (of_platform_bus_create+0x12c/0x170) (of_platform_populate+0x60/0x98) This is because we're wrongly trying to populate resources that are not yet available. It's perfectly valid to create irqchips dynamically, so let's fix up the issue by resolving the interrupt resources when platform_get_irq is called. And then we also need to accept the fact that some irqdomains do not exist that early on, and only get initialized later on. So we can make the current WARN_ON into just into a pr_debug(). We still attempt to populate irq resources when we create the devices. This allows current drivers which don't use platform_get_irq to continue to function. Once all drivers are fixed, this code can be removed. Suggested-by: NRussell King <linux@arm.linux.org.uk> Signed-off-by: NRob Herring <robh@kernel.org> Signed-off-by: NTony Lindgren <tony@atomide.com> Tested-by: NTony Lindgren <tony@atomide.com> Cc: stable@vger.kernel.org # v3.10+ Signed-off-by: NGrant Likely <grant.likely@linaro.org>
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- 04 11月, 2013 1 次提交
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由 Rob Herring 提交于
Platform devices created by DT code don't initialize dma_mask pointer to anything. Set it to coherent_dma_mask by default if the architecture code has not set it. Signed-off-by: NRob Herring <rob.herring@calxeda.com>
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- 31 10月, 2013 1 次提交
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由 Russell King 提交于
AMBA Primecell devices always treat streaming and coherent DMA exactly the same, so there's no point in having the masks separated. Acked-by: NGrant Likely <grant.likely@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 15 10月, 2013 1 次提交
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由 Marek Szyprowski 提交于
This reverts commit 9d8eab7a. There is still no consensus on the bindings for the reserved memory and various drawbacks of the proposed solution has been shown, so the best now is to revert it completely and start again from scratch later. Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: NGrant Likely <grant.likely@linaro.org>
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- 10 9月, 2013 1 次提交
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Add error reporting to of_amba_device_create() so the user knows when (and why) some device tree nodes fail to initialize. [ The issue was spotted on Universal C210 board (using revision 0 of ARM Exynos4210 SoC) on which initialization was silently failing for PL330 MDMA1 device tree node (it was using the wrong addres resulting in amba_device_add() returning -ENODEV). ] Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NGrant Likely <grant.likely@linaro.org>
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- 27 8月, 2013 1 次提交
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由 Marek Szyprowski 提交于
This patch adds device tree support for contiguous and reserved memory regions defined in device tree. Large memory blocks can be reliably reserved only during early boot. This must happen before the whole memory management subsystem is initialized, because we need to ensure that the given contiguous blocks are not yet allocated by kernel. Also it must happen before kernel mappings for the whole low memory are created, to ensure that there will be no mappings (for reserved blocks) or mapping with special properties can be created (for CMA blocks). This all happens before device tree structures are unflattened, so we need to get reserved memory layout directly from fdt. Later, those reserved memory regions are assigned to devices on each device structure initialization. Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com> Acked-by: NKyungmin Park <kyungmin.park@samsung.com> Acked-by: NMichal Nazarewicz <mina86@mina86.com> Acked-by: NTomasz Figa <t.figa@samsung.com> Acked-by: NStephen Warren <swarren@nvidia.com> Reviewed-by: NRob Herring <rob.herring@calxeda.com>
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- 24 7月, 2013 1 次提交
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由 Mark Brown 提交于
It is not used outside of this file so doesn't need to be in the global namespace. Signed-off-by: NMark Brown <broonie@linaro.org> Signed-off-by: NGrant Likely <grant.likely@linaro.org>
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- 18 2月, 2013 1 次提交
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由 Grant Likely 提交于
This reverts commit aac73f34. That commit causes two kinds of breakage; it breaks registration of AMBA devices when one of the parent nodes already contains overlapping resource regions, and it breaks calls to request_region() by device drivers in certain conditions where there are overlapping memory regions. Both of these problems can probably be fixed, but it is better to back out the commit and get a proper fix designed before trying again. Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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