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Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
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Signed-off-by: curry.zhang <curry.zhang@starfivetech.com>
Author: curry.zhang <curry.zhang@starfivetech.com>
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Signed-off-by: jianlong.huang <jianlong.huang@starfivetech.com>
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iort_dma_setup() is being removed by commit db59e1b6e49201be ("ACPI:
arm64: Move DMA setup operations out of IORT") in iommu/next:
drivers/dma/dw-axi-dmac-starfive/starfive_dmaengine_memcpy.c: In function ‘dw_dma_async_
do_memcpy’:
drivers/dma/dw-axi-dmac-starfive/starfive_dmaengine_memcpy.c:152:2: error: implicit decl
aration of function ‘iort_dma_setup’ [-Werror=implicit-function-declaration]
152 | iort_dma_setup(dma_dev, &dma_addr, &dma_size);
| ^~~~~~~~~~~~~~
drivers/dma/dw-axi-dmac-starfive/starfive_dmaengine_memcpy.c:153:8: warning: assignment to ‘const struct iommu_ops *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
153 | iommu = iort_iommu_configure_id(dma_dev, NULL);
| ^
drivers/dma/dw-axi-dmac-starfive/starfive_dmaengine_memcpy.c: In function ‘dw_dma_memcpy_raw’:
drivers/dma/dw-axi-dmac-starfive/starfive_dmaengine_memcpy.c:223:8: warning: assignment to ‘const struct iommu_ops *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
223 | iommu = iort_iommu_configure_id(dma_dev, NULL);
| ^
iort_dma_setup() and iort_iommu_configure_id() are part of the ARM64
ACPI implementation. As CONFIG_ACPI_IORT cannot be enabled on RISC-V,
they were dummies anyway, so these calls can just be removed.
[Emil: remove unused local variables too]
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
---
Boot-tested, but the affected code paths were not exercised.
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Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Signed-off-by: Michael Scott <mike@foundries.io>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
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Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Signed-off-by: Curry Zhang <curry.zhang@starfivetech.com>
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Found by comparing the parallel implementation of more than 8 channel
support for the StarFive JH7100 SoC by Samin.
Fixes: 824351668a41 ("dmaengine: dw-axi-dmac: support DMAX_NUM_CHANNELS > 8")
Co-developed-by: Samin Guo <samin.guo@starfivetech.com>
Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
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axi_chan_block_xfer_start()
commit 885633075847f475f26a29249d772cc0da85d8cd upstream.
Coverity complains of an uninitialized variable:
5. uninit_use_in_call: Using uninitialized value config.dst_per when calling axi_chan_config_write. [show details]
6. uninit_use_in_call: Using uninitialized value config.hs_sel_src when calling axi_chan_config_write. [show details]
CID 121164 (#1-3 of 3): Uninitialized scalar variable (UNINIT)
7. uninit_use_in_call: Using uninitialized value config.src_per when calling axi_chan_config_write. [show details]
418 axi_chan_config_write(chan, &config);
Fix this by initializing the structure to 0 which should at least be benign in axi_chan_config_write(). Also fix
what looks like a cut-n-paste error when initializing config.hs_sel_dst.
Fixes: 824351668a413 ("dmaengine: dw-axi-dmac: support DMAX_NUM_CHANNELS > 8")
Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: dmaengine@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Link: https://lore.kernel.org/r/20211025181656.31658-1-tim.gardner@canonical.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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commit 2f23355e96b4a5896de2032176197fa0c5c444dd upstream.
Simplify assigning zero and performing a logical OR to a single
assignment.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/2abd0da35608c14689a919d47dd45898a8ab4297.1635263478.git.geert@linux-m68k.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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commit 2d0f07f888f52532588730aae0241af5c5df393d upstream.
Add support for setting dma coherent mask, dma mask is set to 64 bit
Signed-off-by: Pandith N <pandith.n@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211001140812.24977-4-pandith.n@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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commit 93a7d32e9f4b8bad722a8c8c83c579a2f6a5aec3 upstream.
Added hardware handshake selection in channel config,
for mem2per and per2mem case.
The peripheral specific handshake interface needs to be
programmed in src_per, dst_per bits of CHx_CFG register.
Signed-off-by: Pandith N <pandith.n@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211001140812.24977-3-pandith.n@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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commit 824351668a413af7d6d88e4ee2c9bee7c60daad2 upstream.
Added support for DMA controller with more than 8 channels.
DMAC register map changes based on number of channels.
Enabling DMAC channel:
DMAC_CHENREG has to be used when number of channels <= 8
DMAC_CHENREG2 has to be used when number of channels > 8
Configuring DMA channel:
CHx_CFG has to be used when number of channels <= 8
CHx_CFG2 has to be used when number of channels > 8
Suspending and resuming channel:
DMAC_CHENREG has to be used when number of channels <= 8 DMAC_CHSUSPREG
has to be used for suspending a channel > 8
Signed-off-by: Pandith N <pandith.n@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211001140812.24977-2-pandith.n@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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PWMDAC add parameter modification interface;
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Add support for StarFive AxiDMA device handshake programming.
Device handshake number passed in to the AxiDMA shall be written to
hardware handshake registers before DMA operations are started.
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AxiDMA driver exposed the dma_set_max_seg_size() to the DMAENGINE.
It shall helps the DMA clients to create size-optimized linked-list
for the controller.
However, there are certain situations where DMA client might not be
abled to benefit from the dma_get_max_seg_size() if the segment size
can't meet the nature of the DMA client's operation.
In the case of ALSA operation, ALSA application and driver expecting
to run in a period of larger than 10ms regardless of the bit depth.
With this large period, there is a strong request to split the
linked-list in the AxiDMA driver.
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Add support for DMA Scatter-Gather (SG) constraint so that DMA clients
can handle the AxiDMA limitation.
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Add support for DMA_RESIDUE_GRANULARITY_BURST so that AxiDMA can report
DMA residue.
Existing AxiDMA driver only support data transfer between memory to
memory operation,therefore reporting DMA residue to the DMA clients is
not supported.
Reporting DMA residue to the DMA clients is important as DMA clients shall
invoke dmaengine_tx_status() to understand the number of bytes been
transferred so that the buffer pointer can be updated accordingly.
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Add support for of_dma_controller_register() so that DMA clients
can pass in device handshake number to the AxiDMA driver.
DMA clients shall code the device handshake number in the Device tree.
When DMA activities are needed, DMA clients shall invoke OF helper
function to pass in the device handshake number to the AxiDMA.
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Add support for device_prep_dma_cyclic() callback function to benefit
DMA cyclic client, for example ALSA.
Existing AxiDMA driver only support data transfer between memory to
memory. Data transfer between device to memory and memory to device in
cyclic mode would failed if this interface is not supported by the
AxiDMA driver.
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Add device_prep_slave_sg() callback function so that DMA_MEM_TO_DEV
and DMA_DEV_TO_MEM operations in single mode can be supported.
Existing AxiDMA driver only support data transfer between
memory to memory. Data transfer between device to memory and
memory to device in single mode would failed if this interface
is not supported by the AxiDMA driver.
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Add device_config() callback function so that the device address
can be passed to the dma driver.
DMA clients use this interface to pass in the device address to the
AxiDMA. Without this interface, data transfer between device to memory
and memory to device would failed.
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Add support for device_synchronize() callback function to sync with
dmaengine_terminate_sync().
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The DMA memory block is created at driver load time and exist for device
lifetime. Move the dma_pool_create() to the ->chan_resource() callback
function allowing the DMA memory blocks to be created as needed and
destroyed when the channel is freed.
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Simplify and refactor the descriptor management by removing the redundant
Linked List Item (LLI) queue control logic from the AxiDMA driver.
The descriptor is split into virtual descriptor and hardware LLI so that
only hardware LLI memories are allocated from the DMA memory pool.
Up to 64 descriptors can be allocated within a PAGE_SIZE compare to 16
descriptors in previous version. This solves the problem where an
ALSA driver expects more than 16 DMA descriptors to run.
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine fixes from Vinod Koul:
"A solitary core fix and a few driver fixes:
Core:
- channel_register error handling
Driver fixes:
- idxd: wq config registers programming and mapping of portal size
- ioatdma: unused fn removal
- pl330: fix burst size
- ti: pm fix on busy and -Wenum-conversion warns
- xilinx: SG capability check, usage of xilinx_aximcdma_tx_segment,
readl_poll_timeout_atomic variant"
* tag 'dmaengine-fix-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dmaengine: fix error codes in channel_register()
dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size
dmaengine: ioatdma: remove unused function missed during dma_v2 removal
dmaengine: idxd: fix mapping of portal size
dmaengine: ti: omap-dma: Block PM if SDMA is busy to fix audio
dmaengine: xilinx_dma: Fix SG capability check for MCDMA
dmaengine: xilinx_dma: Fix usage of xilinx_aximcdma_tx_segment
dmaengine: xilinx_dma: use readl_poll_timeout_atomic variant
dmaengine: ti: k3-udma: fix -Wenum-conversion warning
dmaengine: idxd: fix wq config registers offset programming
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The error codes were not set on some of these error paths.
Also the error handling was more confusing than it needed to be so I
cleaned it up and shuffled it around a bit.
Fixes: d2fb0a043838 ("dmaengine: break out channel registration")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20201113101631.GE168908@mwanda
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Actually, burst size is equal to '1 << desc->rqcfg.brst_size'.
we should use burst size, not desc->rqcfg.brst_size.
dma memcpy performance on Rockchip RV1126
@ 1512MHz A7, 1056MHz LPDDR3, 200MHz DMA:
dmatest:
/# echo dma0chan0 > /sys/module/dmatest/parameters/channel
/# echo 4194304 > /sys/module/dmatest/parameters/test_buf_size
/# echo 8 > /sys/module/dmatest/parameters/iterations
/# echo y > /sys/module/dmatest/parameters/norandom
/# echo y > /sys/module/dmatest/parameters/verbose
/# echo 1 > /sys/module/dmatest/parameters/run
dmatest: dma0chan0-copy0: result #1: 'test passed' with src_off=0x0 dst_off=0x0 len=0x400000
dmatest: dma0chan0-copy0: result #2: 'test passed' with src_off=0x0 dst_off=0x0 len=0x400000
dmatest: dma0chan0-copy0: result #3: 'test passed' with src_off=0x0 dst_off=0x0 len=0x400000
dmatest: dma0chan0-copy0: result #4: 'test passed' with src_off=0x0 dst_off=0x0 len=0x400000
dmatest: dma0chan0-copy0: result #5: 'test passed' with src_off=0x0 dst_off=0x0 len=0x400000
dmatest: dma0chan0-copy0: result #6: 'test passed' with src_off=0x0 dst_off=0x0 len=0x400000
dmatest: dma0chan0-copy0: result #7: 'test passed' with src_off=0x0 dst_off=0x0 len=0x400000
dmatest: dma0chan0-copy0: result #8: 'test passed' with src_off=0x0 dst_off=0x0 len=0x400000
Before:
dmatest: dma0chan0-copy0: summary 8 tests, 0 failures 48 iops 200338 KB/s (0)
After this patch:
dmatest: dma0chan0-copy0: summary 8 tests, 0 failures 179 iops 734873 KB/s (0)
After this patch and increase dma clk to 400MHz:
dmatest: dma0chan0-copy0: summary 8 tests, 0 failures 259 iops 1062929 KB/s (0)
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Link: https://lore.kernel.org/r/1605326106-55681-1-git-send-email-sugar.zhang@rock-chips.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Commit 7f832645d0e5 ("dmaengine: ioatdma: remove ioatdma v2 registration")
missed to remove dca2_tag_map_valid() during its removal. Hence, since
then, dca2_tag_map_valid() is unused and make CC=clang W=1 warns:
drivers/dma/ioat/dca.c:44:19:
warning: unused function 'dca2_tag_map_valid' [-Wunused-function]
So, remove this unused function and get rid of a -Wused-function warning.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lore.kernel.org/r/20201113081248.26416-1-lukas.bulwahn@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Portal size is 4k. Current code is mapping all 4 portals in a single chunk.
Restrict the mapped portal size to a single portal to ensure that submission
only goes to the intended portal address.
Fixes: c52ca478233c ("dmaengine: idxd: add configuration component of driver")
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/160513342642.510187.16450549281618747065.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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We now use cpu_pm for saving and restoring device context for deeper SoC
idle states. But for omap3, we must also block idle if SDMA is busy.
If we don't block idle when SDMA is busy, we eventually end up saving and
restoring SDMA register state on PER domain idle while SDMA is active and
that causes at least audio playback to fail.
Fixes: 4c74ecf79227 ("dmaengine: ti: omap-dma: Add device tree match data and use it for cpu_pm")
Reported-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20201109154013.11950-1-tony@atomide.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The SG capability is inherently present with Multichannel DMA operation.
The register used to check for this capability with other DMA driver types
is not defined for MCDMA.
Fixes: 6ccd692bfb7f ("dmaengine: xilinx_dma: Add Xilinx AXI MCDMA Engine driver support")
Signed-off-by: Matthew Murrian <matthew.murrian@goctsi.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1604473206-32573-4-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Several code sections incorrectly use struct xilinx_axidma_tx_segment
instead of struct xilinx_aximcdma_tx_segment when operating as
Multichannel DMA. As their structures are similar, this just works.
Fixes: 6ccd692bfb7f ("dmaengine: xilinx_dma: Add Xilinx AXI MCDMA Engine driver support")
Signed-off-by: Matthew Murrian <matthew.murrian@goctsi.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1604473206-32573-3-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The xilinx_dma_poll_timeout macro is sometimes called while holding a
spinlock (see xilinx_dma_issue_pending() for an example) this means we
shouldn't sleep when polling the dma channel registers. To address it
in xilinx poll timeout macro use readl_poll_timeout_atomic instead of
readl_poll_timeout variant.
Signed-off-by: Marc Ferland <ferlandm@amotus.ca>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1604473206-32573-2-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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This patch removes the MIC drivers from the kernel tree
since the corresponding devices have been discontinued.
Removing the dma and char-misc changes in one patch and
merging via the char-misc tree is best to avoid any
potential build breakage.
Cc: Nikhil Rao <nikhil.rao@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Sherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/8c1443136563de34699d2c084df478181c205db4.1603854416.git.sudeep.dutt@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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gcc warns about a mismatch argument type when passing
'false' into a function that expects an enum:
drivers/dma/ti/k3-udma-private.c: In function 'xudma_tchan_get':
drivers/dma/ti/k3-udma-private.c:86:34: warning: implicit conversion from 'enum <anonymous>' to 'enum udma_tp_level' [-Wenum-conversion]
86 | return __udma_reserve_##res(ud, false, id); \
| ^~~~~
drivers/dma/ti/k3-udma-private.c:95:1: note: in expansion of macro 'XUDMA_GET_PUT_RESOURCE'
95 | XUDMA_GET_PUT_RESOURCE(tchan);
| ^~~~~~~~~~~~~~~~~~~~~~
In this case, false has the same numerical value as
UDMA_TP_NORMAL, so passing that is most likely the correct
way to avoid the warning without changing the behavior.
Fixes: d70241913413 ("dmaengine: ti: k3-udma: Add glue layer for non DMAengine users")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20201026160123.3704531-1-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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DSA spec v1.1 [1] updated to include a stride size register for WQ
configuration that will specify how much space is reserved for the WQ
configuration register set. This change is expected to be in the final
gen1 DSA hardware. Fix the driver to use WQCFG_OFFSET() for all WQ
offset calculation and fixup WQCFG_OFFSET() to use the new calculated
wq size.
[1]: https://software.intel.com/content/www/us/en/develop/download/intel-data-streaming-accelerator-preliminary-architecture-specification.html
Fixes: bfe1d56091c1 ("dmaengine: idxd: Init and probe for Intel data accelerators")
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/160383444959.48058.14249265538404901781.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC-related driver updates from Olof Johansson:
"Various driver updates for platforms. A bulk of this is smaller fixes
or cleanups, but some of the new material this time around is:
- Support for Nvidia Tegra234 SoC
- Ring accelerator support for TI AM65x
- PRUSS driver for TI platforms
- Renesas support for R-Car V3U SoC
- Reset support for Cortex-M4 processor on i.MX8MQ
There are also new socinfo entries for a handful of different SoCs and
platforms"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (131 commits)
drm/mediatek: reduce clear event
soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api
soc: mediatek: cmdq: add jump function
soc: mediatek: cmdq: add write_s_mask value function
soc: mediatek: cmdq: add write_s value function
soc: mediatek: cmdq: add read_s function
soc: mediatek: cmdq: add write_s_mask function
soc: mediatek: cmdq: add write_s function
soc: mediatek: cmdq: add address shift in jump
soc: mediatek: mtk-infracfg: Fix kerneldoc
soc: amlogic: pm-domains: use always-on flag
reset: sti: reset-syscfg: fix struct description warnings
reset: imx7: add the cm4 reset for i.MX8MQ
dt-bindings: reset: imx8mq: add m4 reset
reset: Fix and extend kerneldoc
reset: reset-zynqmp: Added support for Versal platform
dt-bindings: reset: Updated binding for Versal reset driver
reset: imx7: Support module build
soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk
soc: fsl: qman: convert to use be32_add_cpu()
...
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Driver doesn't use keyword enum for enum owl_dmadesc_offsets resulting
in warning:
drivers/dma/owl-dma.c:139: warning: cannot understand function prototype:
'enum owl_dmadesc_offsets '
So add the keyword to fix it and also add documentation for missing
OWL_DMADESC_SIZE
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20201007083113.567559-6-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Commit f19a11d40a78 ("dmaengine: xilinx: convert tasklets to use new
tasklet_setup() API") updated driver to use new tasklet_setup() API but
missed to update the documentation for the tasklet function.
Fixes: f19a11d40a78 ("dmaengine: xilinx: convert tasklets to use new tasklet_setup() API")
Acked-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/20201007083113.567559-5-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Commit f19a11d40a78 ("dmaengine: xilinx: convert tasklets to use new
tasklet_setup() API") updated driver to use new tasklet_setup() API but
missed to update the documentation for the tasklet function.
Fixes: f19a11d40a78 ("dmaengine: xilinx: convert tasklets to use new tasklet_setup() API")
Acked-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/20201007083113.567559-4-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Commit 00c4747a2f64 ("dmaengine: qcom: convert tasklets to use new
tasklet_setup() API") updated driver to use new tasklet_setup() API but
missed to update the documentation for the tasklet function.
Fixes: 00c4747a2f64 ("dmaengine: qcom: convert tasklets to use new tasklet_setup() API")
Link: https://lore.kernel.org/r/20201007083113.567559-3-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Commit 6752e40d669a ("dmaengine: altera-msgdma: convert tasklets to use
new tasklet_setup() API") updated driver to use new tasklet_setup() API
but missed to update the documentation for the tasklet function.
Fixes: 6752e40d669a ("dmaengine: altera-msgdma: convert tasklets to use new tasklet_setup() API")
Link: https://lore.kernel.org/r/20201007083113.567559-2-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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