This driver likely also supports earlier (RTL8196) and later (RTL93xx)
SoCs.
The SPI hardware in these SoCs is specifically intended for connecting NOR
bootflash chips, and only used for that in dozens of examined devices.
However boiled down to basics, it's really just a half-duplex SPI
controller.
The hardware appears to have a vestigial second chip-select control, but
it hasn't been seen in the wild and is thus not supported.
Signed-off-by: Bert Vermeulen <bert@biot.com>
Link: https://lore.kernel.org/r/20210120135928.246054-3-bert@biot.com
Signed-off-by: Mark Brown <broonie@kernel.org>
In a recent change to the SPI subsystem [1], a new `delay` struct was added
to replace the `delay_usecs`. This change replaces the current
`delay_usecs` with `delay` for this driver.
The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure
that both `delay_usecs` & `delay` are used (in this order to preserve
backwards compatibility).
[1] commit bebcfd272d ("spi: introduce `delay` field for
`spi_transfer` + spi_transfer_delay_exec()")
Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean-OyLXuOCK7orQT0dZR+AlfA@public.gmane.org>
Link: https://lore.kernel.org/r/20200227143931.20688-1-sergiu.cuciurean@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Hi Mark,
This patch series makes the Renesas MSIOF SPI driver fill in actual
transfer speeds and controller limits, so the SPI core can take them
into account.
This has been tested on R-Car Gen2 and Gen3.
Thanks!
Geert Uytterhoeven (2):
spi: sh-msiof: Fill in spi_transfer.effective_speed_hz
spi: sh-msiof: Fill in controller speed limits
drivers/spi/spi-sh-msiof.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
--
2.25.1
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
Add QSPI controller support for Intel LGM SoC.
Patches to move move bindings over to
"Documentation/devicetree/bindings/spi/" directory and also added compatible
Support for Intel platform.
dt-bindings: spi: cadence-qspi: Add support for Intel lgm-qspi
(earlier patch mail thread and Ack-by)
link: "https://lore.kernel.org/lkml/5d6d1b85.1c69fb81.96938.0315@mx.google.com/"
Reference:
https://lkml.org/lkml/2020/6/1/50
---
v9:
- Vignesh review comments address and update
- Retain the patchv4 move the binding documentation from mtd to spi
directory.
- Add intel's compatible string over the legacy documentation
- Remove unused variable, CQSPI_SUPPORTS_MULTI_CHIPSELECT macro and check
- YAML convertion patch alone dropped
v8:
- As Mark suggested to add the dt-bindings documentation patches
end of the series , so dropped.
v7:
- Rob's review comments address and fixed dt-schema warning
- Pratyush review comments address and update
- DAC bit reset to 0 and 1 (enable/disable)
- tested QSI-NOR flash mx25l12805d on LGM soc, it's working after disable DAC
- Linus suggested to use 'num-cs' prperty instead of 'num-chipselect'
v6:
- Rob's review comments update
- add compatible string in properly aligned
- remove cadence-qspi extra comaptible string in example
v5:
- Rob's review comments update
- const with single compatible string kept
v4:
- Rob's review comments update
- remove '|' no formatting to preserve
- child node attributes follows under 'properties' under '@[0-9a-f]+$'.
v3:
- Pratyush review comments update
- CQSPI_SUPPORTS_MULTI_CHIPSELECT macro used instead of cqspi->use_direct_mode
- disable DAC support placed in end of controller_init
v2:
- Rob's review comments update for dt-bindings
- add 'oneOf' for compatible selection
- drop un-neccessary descriptions
- add the cdns,is-decoded-cs and cdns,rclk-en properties as schema
- remove 'allOf' in not required place
- add AdditionalProperties false
- add minItems/maxItems for qspi reset attributes
resend-v1:
- As per Mark's suggestion , reorder the patch series 1-3 driver
support patches, series 4-6 dt-bindings patches.
v1:
- initial version
Ramuthevar Vadivel Murugan (5):
spi: cadence-quadspi: Add QSPI support for Intel LGM SoC
spi: cadence-quadspi: Disable the DAC for Intel LGM SoC
spi: cadence-quadspi: Add multi-chipselect support for Intel LGM SoC
spi: Move cadence-quadspi.txt to Documentation/devicetree/bindings/spi
dt-bindings: spi: cadence-qspi: Add support for Intel lgm-qspi
.../bindings/{mtd => spi}/cadence-quadspi.txt | 1 +
drivers/spi/Kconfig | 2 +-
drivers/spi/spi-cadence-quadspi.c | 24 ++++++++++++++++++----
3 files changed, 22 insertions(+), 5 deletions(-)
rename Documentation/devicetree/bindings/{mtd => spi}/cadence-quadspi.txt (97%)
--
2.11.0
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
Currently we use concrete version to determine the max_cmd_dword.
New entries should be added for compatible hardwares of new version
or on new platform, otherwise the device will use 16 dwords instead
of 64 even if it supports, which will degrade the performance.
This will decrease the compatibility and the maintainability.
Drop the switch-case statement of the version checking. Only version
less than 0x351 supports maximum 16 command dwords.
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Acked-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1610526716-14882-1-git-send-email-yangyicong@hisilicon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The kernel test robot reports the following warning.
drivers/spi/spi-cadence-quadspi.c:966:24: warning: comparison of distinct pointer types ('typeof (len) *' (aka 'unsigned int *') and 'typeof (500UL) *' (aka 'unsigned long *')) [-Wcompare-distinct-pointer-types]
msecs_to_jiffies(max(len, 500UL)))) {
^~~~~~~~~~~~~~~
include/linux/minmax.h:58:19: note: expanded from macro 'max'
#define max(x, y) __careful_cmp(x, y, >)
^~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:42:24: note: expanded from macro '__careful_cmp'
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~~~~~~~
include/linux/minmax.h:32:4: note: expanded from macro '__safe_cmp'
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:18:28: note: expanded from macro '__typecheck'
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
1 warning generated.
This happens because size_t is unsigned long on 64-bit platforms like
arm64 but it is unsigned int on 32-bit platforms like arm. Omitting the
"UL" would result in a warning on 64-bit platforms. Squash it by type
casting the arguments to size_t using max_t(). This way builds on both
type of platforms can be satisfied. There is no chance of any truncation
since 500 is small enough to fit into both int and long.
Fixes: f453f29397 ("spi: cadence-quadspi: Wait at least 500 ms for direct reads")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20210108181457.30291-1-p.yadav@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Pull Kbuild fixes from Masahiro Yamada:
- Search for <ncurses.h> in the default header path of HOSTCC
- Tweak the option order to be kind to old BSD awk
- Remove 'kvmconfig' and 'xenconfig' shorthands
- Fix documentation
* tag 'kbuild-fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
Documentation: kbuild: Fix section reference
kconfig: remove 'kvmconfig' and 'xenconfig' shorthands
lib/raid6: Let $(UNROLL) rules work with macOS userland
kconfig: Support building mconf with vendor sysroot ncurses
kconfig: config script: add a little user help
MAINTAINERS: adjust GCC PLUGINS after gcc-plugin.sh removal
Pull SCSI fixes from James Bottomley:
"This is two driver fixes (megaraid_sas and hisi_sas).
The megaraid one is a revert of a previous revert of a cpu hotplug fix
which exposed a bug in the block layer which has been fixed in this
merge window.
The hisi_sas performance enhancement comes from switching to interrupt
managed completion queues, which depended on the addition of
devm_platform_get_irqs_affinity() which is now upstream via the irq
tree in the last merge window"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: hisi_sas: Expose HW queues for v2 hw
Revert "Revert "scsi: megaraid_sas: Added support for shared host tagset for cpuhotplug""
Pull block fixes from Jens Axboe:
- Missing CRC32 selections (Arnd)
- Fix for a merge window regression with bdev inode init (Christoph)
- bcache fixes
- rnbd fixes
- NVMe pull request from Christoph:
- fix a race in the nvme-tcp send code (Sagi Grimberg)
- fix a list corruption in an nvme-rdma error path (Israel Rukshin)
- avoid a possible double fetch in nvme-pci (Lalithambika Krishnakumar)
- add the susystem NQN quirk for a Samsung driver (Gopal Tiwari)
- fix two compiler warnings in nvme-fcloop (James Smart)
- don't call sleeping functions from irq context in nvme-fc (James Smart)
- remove an unused argument (Max Gurtovoy)
- remove unused exports (Minwoo Im)
- Use-after-free fix for partition iteration (Ming)
- Missing blk-mq debugfs flag annotation (John)
- Bdev freeze regression fix (Satya)
- blk-iocost NULL pointer deref fix (Tejun)
* tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block: (26 commits)
bcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET
bcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket
bcache: check unsupported feature sets for bcache register
bcache: fix typo from SUUP to SUPP in features.h
bcache: set pdev_set_uuid before scond loop iteration
blk-mq-debugfs: Add decode for BLK_MQ_F_TAG_HCTX_SHARED
block/rnbd-clt: avoid module unload race with close confirmation
block/rnbd: Adding name to the Contributors List
block/rnbd-clt: Fix sg table use after free
block/rnbd-srv: Fix use after free in rnbd_srv_sess_dev_force_close
block/rnbd: Select SG_POOL for RNBD_CLIENT
block: pre-initialize struct block_device in bdev_alloc_inode
fs: Fix freeze_bdev()/thaw_bdev() accounting of bd_fsfreeze_sb
nvme: remove the unused status argument from nvme_trace_bio_complete
nvmet-rdma: Fix list_del corruption on queue establishment failure
nvme: unexport functions with no external caller
nvme: avoid possible double fetch in handling CQE
nvme-tcp: Fix possible race of io_work and direct send
nvme-pci: mark Samsung PM1725a as IGNORE_DEV_SUBNQN
nvme-fcloop: Fix sscanf type and list_first_entry_or_null warnings
...
Pull io_uring fixes from Jens Axboe:
"A bit larger than I had hoped at this point, but it's all changes that
will be directed towards stable anyway. In detail:
- Fix a merge window regression on error return (Matthew)
- Remove useless variable declaration/assignment (Ye Bin)
- IOPOLL fixes (Pavel)
- Exit and cancelation fixes (Pavel)
- fasync lockdep complaint fix (Pavel)
- Ensure SQPOLL is synchronized with creator life time (Pavel)"
* tag 'io_uring-5.11-2021-01-10' of git://git.kernel.dk/linux-block:
io_uring: stop SQPOLL submit on creator's death
io_uring: add warn_once for io_uring_flush()
io_uring: inline io_uring_attempt_task_drop()
io_uring: io_rw_reissue lockdep annotations
io_uring: synchronise ev_posted() with waitqueues
io_uring: dont kill fasync under completion_lock
io_uring: trigger eventfd for IOPOLL
io_uring: Fix return value from alloc_fixed_file_ref_node
io_uring: Delete useless variable ‘id’ in io_prep_async_work
io_uring: cancel more aggressively in exit_work
io_uring: drop file refs after task cancel
io_uring: patch up IOPOLL overflow_flush sync
io_uring: synchronise IOPOLL on task_submit fail
Pull USB fixes from Greg KH:
"Here are a number of small USB driver fixes for 5.11-rc3.
Include in here are:
- USB gadget driver fixes for reported issues
- new usb-serial driver ids
- dma from stack bugfixes
- typec bugfixes
- dwc3 bugfixes
- xhci driver bugfixes
- other small misc usb driver bugfixes
All of these have been in linux-next with no reported issues"
* tag 'usb-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (35 commits)
usb: dwc3: gadget: Clear wait flag on dequeue
usb: typec: Send uevent for num_altmodes update
usb: typec: Fix copy paste error for NVIDIA alt-mode description
usb: gadget: enable super speed plus
kcov, usb: hide in_serving_softirq checks in __usb_hcd_giveback_urb
usb: uas: Add PNY USB Portable SSD to unusual_uas
usb: gadget: configfs: Preserve function ordering after bind failure
usb: gadget: select CONFIG_CRC32
usb: gadget: core: change the comment for usb_gadget_connect
usb: gadget: configfs: Fix use-after-free issue with udc_name
usb: dwc3: gadget: Restart DWC3 gadget when enabling pullup
usb: usbip: vhci_hcd: protect shift size
USB: usblp: fix DMA to stack
USB: serial: iuu_phoenix: fix DMA from stack
USB: serial: option: add LongSung M5710 module support
USB: serial: option: add Quectel EM160R-GL
USB: Gadget: dummy-hcd: Fix shift-out-of-bounds bug
usb: gadget: f_uac2: reset wMaxPacketSize
usb: dwc3: ulpi: Fix USB2.0 HS/FS/LS PHY suspend regression
usb: dwc3: ulpi: Replace CPU-based busyloop with Protocol-based one
...
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes for 5.11-rc3. Nothing major,
just resolving some reported issues:
- cleanup some remaining mentions of the ION drivers that were
removed in 5.11-rc1
- comedi driver bugfix
- two error path memory leak fixes
All have been in linux-next for a while with no reported issues"
* tag 'staging-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: ION: remove some references to CONFIG_ION
staging: mt7621-dma: Fix a resource leak in an error handling path
Staging: comedi: Return -EFAULT if copy_to_user() fails
staging: spmi: hisi-spmi-controller: Fix some error handling paths
Pull char/misc driver fixes from Greg KH:
"Here are some small char and misc driver fixes for 5.11-rc3.
The majority here are fixes for the habanalabs drivers, but also in
here are:
- crypto driver fix
- pvpanic driver fix
- updated font file
- interconnect driver fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (26 commits)
Fonts: font_ter16x32: Update font with new upstream Terminus release
misc: pvpanic: Check devm_ioport_map() for NULL
speakup: Add github repository URL and bug tracker
MAINTAINERS: Update Georgi's email address
crypto: asym_tpm: correct zero out potential secrets
habanalabs: Fix memleak in hl_device_reset
interconnect: imx8mq: Use icc_sync_state
interconnect: imx: Remove a useless test
interconnect: imx: Add a missing of_node_put after of_device_is_available
interconnect: qcom: fix rpmh link failures
habanalabs: fix order of status check
habanalabs: register to pci shutdown callback
habanalabs: add validation cs counter, fix misplaced counters
habanalabs/gaudi: retry loading TPC f/w on -EINTR
habanalabs: adjust pci controller init to new firmware
habanalabs: update comment in hl_boot_if.h
habanalabs/gaudi: enhance reset message
habanalabs: full FW hard reset support
habanalabs/gaudi: disable CGM at HW initialization
habanalabs: Revise comment to align with mirror list name
...
Pull ARC fixes from Vineet Gupta:
- Address the 2nd boot failure due to snafu in signal handling code
(first was generic console ttynull issue)
- misc other fixes
* tag 'arc-5.11-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: [hsdk]: Enable FPU_SAVE_RESTORE
ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling
include/soc: remove headers for EZChip NPS
arch/arc: add copy_user_page() to <asm/page.h> to fix build error on ARC
Pull powerpc fixes from Michael Ellerman:
- A fix for machine check handling with VMAP stack on 32-bit.
- A clang build fix.
Thanks to Christophe Leroy and Nathan Chancellor.
* tag 'powerpc-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Handle .text.{hot,unlikely}.* in linker script
powerpc/32s: Fix RTAS machine check with VMAP stack
Pull x86 fixes from Borislav Petkov:
"As expected, fixes started trickling in after the holidays so here is
the accumulated pile of x86 fixes for 5.11:
- A fix for fanotify_mark() missing the conversion of x86_32 native
syscalls which take 64-bit arguments to the compat handlers due to
former having a general compat handler. (Brian Gerst)
- Add a forgotten pmd page destructor call to pud_free_pmd_page()
where a pmd page is freed. (Dan Williams)
- Make IN/OUT insns with an u8 immediate port operand handling for
SEV-ES guests more precise by using only the single port byte and
not the whole s32 value of the insn decoder. (Peter Gonda)
- Correct a straddling end range check before returning the proper
MTRR type, when the end address is the same as top of memory.
(Ying-Tsun Huang)
- Change PQR_ASSOC MSR update scheme when moving a task to a resctrl
resource group to avoid significant performance overhead with some
resctrl workloads. (Fenghua Yu)
- Avoid the actual task move overhead when the task is already in the
resource group. (Fenghua Yu)"
* tag 'x86_urgent_for_v5.11_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/resctrl: Don't move a task to the same resource group
x86/resctrl: Use an IPI instead of task_work_add() to update PQR_ASSOC MSR
x86/mtrr: Correct the range check before performing MTRR type lookups
x86/sev-es: Fix SEV-ES OUT/IN immediate opcode vc handling
x86/mm: Fix leak of pmd ptlock
fanotify: Fix sys_fanotify_mark() on native x86-32
Pull hwmon fixes from Guenter Roeck:
- Fix possible KASAN issue in amd_energy driver
- Avoid configuration problem in pwm-fan driver
- Fix kernel-doc warning in sbtsi_temp documentation
* tag 'hwmon-for-v5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (amd_energy) fix allocation of hwmon_channel_info config
hwmon: (pwm-fan) Ensure that calculation doesn't discard big period values
hwmon: (sbtsi_temp) Fix Documenation kernel-doc warning
Pull dmaengine fixes from Vinod Koul:
"A bunch of dmaengine driver fixes for:
- coverity discovered issues for xilinx driver
- qcom, gpi driver fix for undefined bhaviour and one off cleanup
- update Peter's email for TI DMA drivers
- one-off for idxd driver
- resource leak fix for mediatek and milbeaut drivers"
* tag 'dmaengine-fix-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dmaengine: stm32-mdma: fix STM32_MDMA_VERY_HIGH_PRIORITY value
dmaengine: xilinx_dma: fix mixed_enum_type coverity warning
dmaengine: xilinx_dma: fix incompatible param warning in _child_probe()
dmaengine: xilinx_dma: check dma_async_device_register return value
dmaengine: qcom: fix gpi undefined behavior
dt-bindings: dma: ti: Update maintainer and author information
MAINTAINERS: Add entry for Texas Instruments DMA drivers
qcom: bam_dma: Delete useless kfree code
dmaengine: dw-edma: Fix use after free in dw_edma_alloc_chunk()
dmaengine: milbeaut-xdmac: Fix a resource leak in the error handling path of the probe function
dmaengine: mediatek: mtk-hsdma: Fix a resource leak in the error handling path of the probe function
dmaengine: qcom: gpi: Fixes a format mismatch
dmaengine: idxd: off by one in cleanup code
dmaengine: ti: k3-udma: Fix pktdma rchan TPL level setup
