Commit graph

87722 commits

Author SHA1 Message Date
Takahiro Kuwano
562d166a13 mtd: spi-nor-core: Add fixups for s25fs512s
This patch adds fixups for s25fs512s to address the following issues
from reading SFDP:

  - Non-uniform sectors by factory default. The setting needs to be
    checked and assign erase hook as needed.
  - Page size is wrongly advertised in SFDP.
  - READ_1_1_2 (3Bh/3Ch), READ_1_1_4 (6Bh/6Ch), and PP_1_1_4 (32h/34h)
    are not supported.
  - Bank Address Register (BAR) is not supported.

In addition, volatile version of Quad Enable is used for safety.

Based on patch by Takahiro Kuwano with s25fs_s_post_bfpt_fixup() updated
to use 4-byte address commands instead of extended address mode and the
page_size is fixed to 256

For future use, manufacturer code should be moved out from framework
code as same as in Linux.

Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Cong Dang <cong.dang.xn@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2023-04-26 13:32:45 +05:30
Svyatoslav Ryhel
def72d5c62 video: panel: add generic endeavoru panel
Family of panels used by HTC in One X. Though were used variants
at least from 3 vendors, this driver provides generic support for
all of them.

Tested-by: Ion Agorria <ion@agorria.com> # HTC One X T30 Sony
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # HTC One X T30 Sharp
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-26 07:35:57 +02:00
Svyatoslav Ryhel
d8cca91380 video: tegra: add DC based PWM backlight driver
DC based PWM backlight is found on some T20 and T30 devices
(HTC One X). This backlight is controlled by Tegra DC and
is adjustable by the DC PM0 or PM1 signal.

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # HTC One X T30
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # HTC One X T30
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-26 07:32:25 +02:00
Svyatoslav Ryhel
6d9b3a7e83 video: panel: add Renesas R69328 MIPI DSI panel driver
Driver adds support for panels with Renesas R69328 IC

Currently supported compatible is:
- jdi,dx12d100vm0eaa

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # LG P880 T30
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # LG P895 T30
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-26 07:29:12 +02:00
Svyatoslav Ryhel
dcee478a6f video: panel: add Renesas R61307 MIPI DSI panel driver
R61307 is liquid crystal driver for high-definition
amorphous silicon (a-Si) panels and is ideal for
tablets and smartphones.

Supported compatibles are:
- koe,tx13d100vm0eaa
- hitachi,tx13d100vm0eaa

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # LG P880 T30
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # LG P895 T30
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-26 07:27:05 +02:00
Svyatoslav Ryhel
b0268244d3 video: bridge: add Solomon SSD2825 DSI/LVDS driver
SSD2825 is an innovative and cost-effective MIPI Bridge Chip solution
targeting high resolution smartphones. It can convert 24bit RGB
interface into 4-lane MIPI-DSI interface to drive extremely high
resolution display modules of up to 800 x 1366, while supporting AMOLED,
a-si LCD or LTPS advanced panel technologies for smartphone applications.

Bridge is wrapped in panel uClass model for wider compatibility.

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # LG P880 T30
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # LG P895 T30
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
2023-04-26 07:25:34 +02:00
Svyatoslav Ryhel
0602083706 video: add lm3533 backlight driver
This is basic lm3533 driver only with bank A and backlight cell
support.

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # LG P880 T30
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # LG P895 T30
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-26 07:23:10 +02:00
Rasmus Villemoes
0fac5c47e4 gpio-uclass: fix off-by-one in gpio_request_list_by_name_nodev()
By the time we jump to the err label, count represents the number of
gpios we've successfully requested. So by subtracting one, we fail to
free the most recently requested.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:28 -04:00
Michal Simek
b411ba9210 xen: Limit execution to EL1 only
Xen core_init() is calling HVC which should be called from EL1 level that's
why do Xen initialization only when U-Boot runs in EL1.

Signed-off-by: Michal Simek <michal.simek@amd.com>
2023-04-25 15:31:28 -04:00
Michal Simek
539486787e xen: Add dependency on armv8
U-Boot currently implements hypervisor calls only for ARM64 that's why add
dependency on ARM64. The hardware functionality is also available on
ARMv7a, but currently not supported by U-Boot, hence it is not added to the
list of dependencies here.

Signed-off-by: Michal Simek <michal.simek@amd.com>
2023-04-25 15:31:28 -04:00
Pali Rohár
7add47959e arm: omap3: Directly use SMC #1 in lowlevel_init.S
Since commit de39dc7162 ("arm: armv7-a: Compile and tune for armv7-a
instead of armv5") is used -march=armv7-a option for Omap3 platforms.

With directive ".arch_extension sec" it is possible for -march=armv7-a to
directly use ARM SMC instruction.

So enable ".arch_extension sec" in Omap3 lowlevel_init.S and replace hand
assembled ".word 0xe1600071" by "SMC #1".

Since commit 51d0638650 ("arm: omap-common: add secure smc entry") same
pattern is already used in arch/arm/cpu/armv7/omap-common/lowlevel_init.S.

Signed-off-by: Pali Rohár <pali@kernel.org>
2023-04-25 15:31:28 -04:00
John Keeping
51e0cacca7 tools: env: update lock path in README
Commit aeb40f1166 ("tools: env: use /run to store lockfile") updated the
path to the lockfile but did not update the documentation to match.

Use the new path in the documentation.

Fixes: aeb40f1166 ("tools: env: use /run to store lockfile")
Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:28 -04:00
Christian Gmeiner
cc6259832a ata: pci: enable bus mastering
The non DM code path already would enable pci bus mastering. Do the
same for the DM code path.

Fixes AHCI problems I am seeing on an Intel Apollolake device.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[trini: Use ahci_dev not dev in the calls]
Signed-off-by: Tom Rini <trini@konsulko.com>
2023-04-25 15:31:28 -04:00
Sinan Akman
23fd87c489 mpc8379erdb: Convert to using DM_SERIAL
Convert to DM_SERIAL for mpc8379erdb.

Signed-off-by: Sinan Akman <sinan@writeme.com>
2023-04-25 15:31:28 -04:00
Tom Rini
e97c89cc15 qemu: dfu: Correct memset call in set_dfu_alt_info
When building with clang, we see:
board/emulation/common/qemu_dfu.c:51:24: warning: 'memset' call operates on objects of type 'char' while the size is based on a different type 'char *' [-Wsizeof-pointer-memaccess]

As we're calling memset with the length set to the size of the pointer
and not the size of the buffer. Correct this with a call of the size of
the buffer itself.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Sughosh Ganu <sughosh.ganu@linaro.org>
2023-04-25 15:31:28 -04:00
Tom Rini
ac44c6cf95 api: Rework menu, and make it depend on CC_IS_GCC
We can only use the old U-Boot API for standalone applications when
building U-Boot with GCC as it relies upon the "gd is a register" trick
that only GCC supports. Further, rework the rest of the options so that
they are in the API menu and only visible if API support is enabled.

Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:28 -04:00
Peng Fan
6326519f57 sysreset: psci: add psci_sysreset_get_status
Add weak function psci_sysreset_get_status for platform to define
their own reset status with CONFIG_SYSRESET enabled.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-04-25 15:31:28 -04:00
Peng Fan
439b9383ee sysreset: psci: enable DM_FLAG_PRE_RELOC
It is possible that cpu core may reset before relocation with PSCI reset

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-04-25 15:31:28 -04:00
Peng Fan
1bd790bc4b firmware: psci: enable DM_FLAG_PRE_RELOC
It is possible that cpu core may reset before relocation with PSCI reset

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-04-25 15:31:28 -04:00
Michal Simek
44cd761ad6 xen: Fix Kconfig dependencies
XEN config can be enabled by other platforms (even it doesn't need to make
sense) that's why fix dependencies. XEN (xenbus.c) requires sscanf (also
pvblock needs it). And PVBLOCK is inside drivers/xen folder which requires
XEN to be enabled.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2023-04-25 15:31:28 -04:00
Tom Rini
af2fde49fe pytest: Use --lazy with umount
Sometimes when doing tests on real hardware we sometimes run in to the
case where some of these mounts haven't been fully flushed.  Using the
--lazy option with umount will allow us to continue while letting the OS
handle flushing the data out still.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:28 -04:00
Tom Rini
73b39a76e3 usb: gadget: f_mass_storage: Rework do_request_sense slightly
When building with clang, it notes that sdinfo may be unused
uninitialized in some cases. This appears to be true from reading the
code, and we can simply set the variable to zero to start with and be as
correct as before.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Marek Vasut <marex@denx.de>
2023-04-25 15:31:27 -04:00
Tom Rini
51a765b376 boot/image-board.c: Silence warning in select_ramdisk
When building with clang we get a warning that rdaddr could be
uninitialized in one case. While this cannot functionally happen, we can
easily silence the warning.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:27 -04:00
Tom Rini
b5fc9f99d0 armv7: Use isb/dsb directly in start.S
Toolchains which do not directly support using "isb" and "dsb" directly
are no longer functionally supported in U-Boot. Furthermore, clang has
for a long time warned about using the alternate form that we were.
Update the code.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:27 -04:00
Tom Rini
a27c8ea7f7 arm: Centralize fixed register logic
When building for ARM64, we need to pass -ffixed-x18 and otherwise pass
-ffixed-r9. Rather than having this logic in two places, we can do this
once in arch/arm/config.mk. Further, while gcc will ignore being passed
both -ffixed-r9 and -ffixed-x18 and simply use -ffixed-x18, clang will
note that -ffixed-r9 is not used. Remove this duplication to also remove
the warning.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:27 -04:00
Tom Rini
4ad6850d2b clang: Don't look for libgcc
In the case of using clang to build, and having not already enabled the
private libgcc, do not look for it, as it will not be found nor
required.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:27 -04:00
Tom Rini
fd0712acce clang: Add $(CLANG_TARGET) to LDPPFLAGS
When we invoke $(CPP) to make u-boot.lds we have LDPPFLAGS available to
set other required flags here. As this file is for the target and not
the host, we must ensure that CPP knows what the target architecture is.
For this, pass in $(CLANG_TARGET).

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:27 -04:00
Tom Rini
c2e5eea38a arm: Only support ARM64_CRC32 when using GCC
Today, only gcc has __builtin_aarch64_crc32b (clang-16 does not, for
example). Make this option depend on CC_IS_GCC.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:27 -04:00
Bin Meng
142155103d fs: yaffs2: Make yaffsfs_deviceList static
yaffsfs_deviceList is only referenced in yaffsfs.c

Signed-off-by: Bin Meng <bmeng@tinylab.org>
2023-04-25 15:31:27 -04:00
Heinrich Schuchardt
005acb2a6d test: move unit tests into a sub-menu
The main configuration menu should not contain detail settings.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:27 -04:00
Heinrich Schuchardt
0b8b7d47aa test: improve configuration for Kconfig test options
* Fix dependencies
* Provide labels that are easier to grasp.
* Fix typo %s/whgch/which/
* Fix type %s/Is/is/

Fixes: 29784d62ed ("test: Add some tests for kconfig.h")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 15:31:27 -04:00
Pavel Skripkin
de0095b400 arm64: interrupts: print FAR_ELx on sync exceptions
Default synchronous exceptions handler prints only esr and register
dump. Sometimes it requiers to see an address which caused exceptions
to understand what's going on

ARM ARM in section D13.2.41 states that FAR_EL2 will contain meanfull
value in case of ESR.EC holds 0x20, 0x21, 0x24, 0x25, 0x22, 0x34 or
0x35. Same applies for EL1.

This patch adds function whivh determine current EL, gets correct FAR
register and prints it on panic.

Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
2023-04-25 15:31:27 -04:00
Peter Hoyes
23ff3e7b15 configs: Create minimal vexpress_fvp_defconfig
The vexpress64 board family now relies on OF_CONTROL and
OF_HAS_PRIOR_STAGE, so platform-specific configuration requirements
are minimal.

The vexpress_aemv8a_semi_defconfig file defines many flags that are not
needed for a minimal boot, such as flash memory configuration.

Therefore create vexpress_fvp_defconfig which contains the minimum
configuration required to boot on an Arm v8a FVP.

Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
2023-04-25 15:31:27 -04:00
Peter Hoyes
3e15be549c vexpress64: Enable VIRTIO_MMIO and RTC_PL031 in the base model
The Arm EBBR (Embedded Base Boot Requirements) require that the time
and basic networking EFI interfaces are available and working, so long
as the hardware has an RTC and network interface.

Arm FVPs typically have a memory-mapped PL031 RTC and a VIRTIO_NET
device defined in the device tree, so "imply" these in the Kconfig for
the FVP base model to simplify creating EBBR-compliant firmware.

Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
2023-04-25 15:31:27 -04:00
Peter Hoyes
3635df6bdf vexpress64: Use OF_HAS_PRIOR_STAGE for BASE_FVP variant
BASE_FVP now typically uses a devicetree provided by a prior boot stage
(typically Arm TF-A), so imply this option by default when
TARGET_VEXPRESS64_BASE_FVP is selected.

OF_HAS_PRIOR_STAGE selects OF_BOARD so this change is minor, but aligns
TARGET_VEXPRESS64_BASE_FVP with TARGET_VEXPRESS64_BASER_FVP.

Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
2023-04-25 15:31:27 -04:00
Nikhil M Jain
990bf2f38f include: configs: am64x_evm: Change to using .env
Move to using .env file for setting up environment variables for am64x.

Signed-off-by: Nikhil M Jain <n-jain1@ti.com>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
2023-04-25 15:31:27 -04:00
Jayesh Choudhary
2e43ba7805 arch: mach-k3: j721s2_init: Disable the firewalls
Some firewalls enabled by ROM are still left on. So some
address space is inaccessible to the bootloader. For example,
in OSPI boot mode we get an exception and the system hangs.
Therefore, disable all the firewalls left on by the ROM.

Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Reviewed-by: Andrew Davis <afd@ti.com>
Reviewed-by: Manorit Chawdhry <m-chawdhry@ti.com>
2023-04-25 15:31:27 -04:00
Rasmus Villemoes
45981a9a37 soc: soc_ti_k3: fix revision array bounds checks
If rev is equal to the array size, we'll access the array
one-past-the-end.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Bryan Brattlof <bb@ti.com>
2023-04-25 15:31:27 -04:00
meitao
c1da6fdb5c armv8: enable HAFDBS for other ELx when FEAT_HAFDBS is present
u-boot could be run at EL1/EL2/EL3. so we set it as same as EL1 does.
otherwise it will hang when enable mmu, that is what we encounter
in our SOC.

Signed-off-by: meitao <meitaogao@asrmicro.com>
[ Paul: pick from the Android tree. Rebase to the upstream ]
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Tom Rini <trini@konsulko.com>
Link: 3bf38943ae
2023-04-25 15:31:27 -04:00
Marc Zyngier
836b8d4b20 arm64: Use level-2 for largest block mappings when FEAT_HAFDBS is present
In order to make invalidation by VA more efficient, set the largest
block mapping to 2MB, mapping it onto level-2. This has no material
impact on u-boot's runtime performance, and allows a huge speedup
when cleaning the cache.

Signed-off-by: Marc Zyngier <maz@kernel.org>
[ Paul: pick from the Android tree. Rebase to the upstream ]
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Tom Rini <trini@konsulko.com>
Link: 417a73581a
2023-04-25 15:31:27 -04:00
Marc Zyngier
6cdf6b7a34 arm64: Use FEAT_HAFDBS to track dirty pages when available
Some recent arm64 cores have a facility that allows the page
table walker to track the dirty state of a page. This makes it
really efficient to perform CMOs by VA as we only need to look
at dirty pages.

Signed-off-by: Marc Zyngier <maz@kernel.org>
[ Paul: pick from the Android tree. Rebase to the upstream ]
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Tom Rini <trini@konsulko.com>
Link: 3c433724e6
2023-04-25 15:31:27 -04:00
Tom Rini
bad2618b8c Merge branch '2023-04-25-use-bounce-buffers-for-VIRTIO_F_IOMMU_PLATFORM'
To quote the author:
These patches will use bounce buffers when VIRTIO_F_IOMMU_PLATFORM
feature is in a virtio device.

This feature can be tested with qemu with -device virtio-iommu-pci.  So
that when a -device virtio-blk-pci with iommu_platform=true, it will
uses the bounce buffer instead.
2023-04-25 14:22:40 -04:00
Ilias Apalodimas
8485595927 spi: synquacer: Silence uninitialized variable warnings
When building with clang, the compiler compains with

drivers/spi/spi-synquacer.c:212:11: warning: variable 'bus_width' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
        else if (priv->mode & SPI_TX_OCTAL)
                 ^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/spi/spi-synquacer.c:276:11: note: uninitialized use occurs here
        val |= ((bus_width >> 1) << BUS_WIDTH);
                 ^~~~~~~~~
drivers/spi/spi-synquacer.c:212:7: note: remove the 'if' if its condition is always true
        else if (priv->mode & SPI_TX_OCTAL)
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/spi/spi-synquacer.c:189:25: note: initialize the variable 'bus_width' to silence this warning

So initialize bus_width to 1 and add a warning if none of the configured
modes matches

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2023-04-25 23:06:10 +05:30
Heinrich Schuchardt
24c27b3c6c mtd: spi-nor: missing fallthrough in set_4byte()
Add a missing fallthrough macro to avoid a -Wimplicit-fallthrough warning.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2023-04-25 23:03:13 +05:30
Jim Liu
0514227e19 spi: npcm-fiu: add regulator feature and remove set clock
NPCM7xx/NPCM8xx default is boot from flash.
removed set clock feature due to reliability and security.
the clock will set by bootblock or tip.

Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2023-04-25 23:01:48 +05:30
Kunihiko Hayashi
c008280a9a spi: f-ospi: Add missing spi_mem_default_supports_op() helper
The .supports_op() callback function returns true by default after
performing driver-specific checks. Therefore the driver cannot apply
the buswidth in devicetree.

Call spi_mem_default_supports_op() helper to handle the buswidth
in devicetree.

Fixes: 358f803ae2 ("spi: Add Socionext F_OSPI SPI flash controller driver")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2023-04-25 22:58:21 +05:30
Dhruva Gole
db58dc5438 spi: spi-mem: perform odd len check only while writing data
in spi_mem_dtr_supports_op we have a check for allowing only even number
of bytes to be r/w. Odd bytes writing can be a concern while writing
data to a flash for example because 8 DTR mode doesn't support it.
However, reading ODD Bytes even  though may not be physically possible
we can still allow for it because it will not have serious implications
on any critical registers being overwritten since they are just reads.

Cc: Vaishnav Achath <vaishnav.a@ti.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Tested-by: Nikhil M Jain <n-jain1@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2023-04-25 22:56:14 +05:30
Dhruva Gole
963b5da339 spi: spi-mem: s/dummy/data buswidth check in dtr_supports_op()
This should have been op->data.buswidth instead as we check for octal
bus width for the data related ops
Also add explanation for why there is checks for 8D even data bytes

Cc: Pratyush Yadav <pratyush@kernel.org>
Reviewed-by: Pratyush Yadav <ptyadav@amazon.de>
Tested-by: Nikhil M Jain <n-jain1@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2023-04-25 22:55:51 +05:30
Marek Vasut
b91a0822d7 mtd: spi-nor: Add CHIP_ERASE optimization
Add support for CHIP_ERASE opcode 0xc7 . This is useful in case the
entire SPI NOR is supposed to be erase at once, as is it considerably
faster than 4k sector erase and even slightly faster than 64k block
erase. The spi_nor_erase_chip() implementation is adapted from Linux
6.1.y as of commit 7d54cb2c26dad ("Linux 6.1.14") . The chip erase is
only used in case the entire MTD device is being erased, and the chip
does support this functionality.

Timing figures from W25Q128JW:
16 MiB erase using 4kiB sector erase opcode 0x20 ... 107.5s
16 MiB erase using 64kiB block erase opcode 0xd8 ... 39.1s
16 MiB erase using chip erase opcode 0xc7 .......... 38.7s

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2023-04-25 22:52:55 +05:30
Will Deacon
b0a2fe148a virtio: Use bounce buffers when VIRTIO_F_IOMMU_PLATFORM is set
Devices advertising the VIRTIO_F_IOMMU_PLATFORM feature require
platform-specific handling to configure their DMA transactions.

When handling virtio descriptors for such a device, use bounce
buffers to ensure that the underlying buffers are always aligned
to and padded to PAGE_SIZE in preparation for platform specific
handling at page granularity.

Signed-off-by: Will Deacon <willdeacon@google.com>
[ Paul: pick from the Android tree. Rebase to the upstream ]
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Link: 1eff171e61
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-04-25 11:53:15 -04:00