17 Jan, 2020
2 commits
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mvebu drivers for 5.6 (part 1)
- Various cleanup on the following drivers:
- Turris Mox rWTM firmware
- Moxtet bus
- Armada 37xx rWTM mailbox
- Marvell EBU Device Bus* tag 'mvebu-drivers-5.6-1' of git://git.infradead.org/linux-mvebu:
mailbox: armada-37xx-rwtm: convert to devm_platform_ioremap_resource
memory: mvebu-devbus: convert to devm_platform_ioremap_resource
bus: moxtet: declare moxtet_bus_type as static
firmware: turris-mox-rwtm: small white space cleanupLink: https://lore.kernel.org/r/877e1x3nxc.fsf@FE-laptop
Signed-off-by: Olof Johansson -
…t/tegra/linux into arm/drivers
memory: tegra: Changes for v5.6-rc1
This adds a couple of fixes for the Tegra30 EMC frequency scaling code
and adds support for EMC frequency scaling on Tegra186 and later.* tag 'tegra-for-5.6-memory' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
memory: tegra30-emc: Correct error message for timed out auto calibration
memory: tegra30-emc: Firm up hardware programming sequence
memory: tegra30-emc: Firm up suspend/resume sequence
memory: tegra: Correct reset value of xusb_hostr
memory: tegra: Add support for the Tegra194 memory controller
memory: tegra: Only include support for enabled SoCs
memory: tegra: Support DVFS on Tegra186 and later
memory: tegra: Add system sleep support
memory: tegra: Extract memory client SID programming
memory: tegra: Add per-SoC data for Tegra186
memory: tegra: Rename tegra_mc to tegra186_mc on Tegra186
memory: tegra: Implement EMC debugfs interface on Tegra30
memory: tegra: Implement EMC debugfs interface on Tegra20
memory: tegra: Refashion EMC debugfs interface on Tegra124Link: https://lore.kernel.org/r/20200111003553.2411874-3-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
10 Jan, 2020
14 commits
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The code waits for auto calibration to be finished and not to be disabled.
Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
Previously there was a problem where a late handshake handling caused
a memory corruption, this problem was resolved by issuing calibration
command right after changing the timing, but looks like the solution
wasn't entirely correct since calibration interval could be disabled as
well. Now programming sequence is completed immediately after receiving
handshake from CaR, without potentially long delays and in accordance to
the TRM's programming guide.Secondly, the TRM's programming guide suggests to flush EMC writes by
reading any *MC* register before doing CaR changes. This is also addressed
now.Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
The current code doesn't prevent race conditions of suspend/resume vs CCF.
Let's take exclusive control over the EMC clock during suspend in a way
that is free from race conditions.Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
According to Tegra X1 (Tegra210) TRM, the reset value of xusb_hostr
field (bit [7:0]) should be 0x7a. So this patch simply corrects it.Signed-off-by: Nicolin Chen
Signed-off-by: Thierry Reding -
The memory and external memory controllers on Tegra194 are very similar
to their predecessors from Tegra186. Add the necessary SoC-specific data
to support the newer versions.Signed-off-by: Thierry Reding
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The memory client tables can be fairly large and they can easily be
omitted if support for the corresponding SoC is not enabled.Signed-off-by: Thierry Reding
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Add a Tegra186 (and later) EMC driver that reads the EMC DVFS tables
from BPMP and uses the EMC clock to change the external memory clock.This currently only provides a debugfs interface to show the available
frequencies and set lower and upper limits of the allowed range. This
can be used for testing the various frequencies. The goal is to
eventually integrate this with the interconnect framework so that the
EMC frequency can be scaled based on demand from memory clients.Signed-off-by: Thierry Reding
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Add system suspend/resume support for the memory controller found on
Tegra186 and later. This is required so that the SID registers can be
reprogrammed after their content was lost during system sleep.Signed-off-by: Thierry Reding
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Move programming of the memory client to SID mapping into a separate
function so that it can be reused from multiple call sites.Signed-off-by: Thierry Reding
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Instead of hard-coding the memory client table, use per-SoC data in
preparation for adding support for other SoCs.Signed-off-by: Thierry Reding
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This is just for consistency with the rest of the driver.
Signed-off-by: Thierry Reding
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A common debugfs interface is already available on Tegra20, Tegra124,
Tegra186 and Tegra194. Implement the same interface on Tegra30 to enable
testing of the EMC frequency scaling code using a unified interface.Signed-off-by: Thierry Reding
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A common debugfs interface is already available on Tegra124, Tegra186
and Tegra194. Implement the same interface on Tegra20 to enable testing
of the EMC frequency scaling code using a unified interface.Signed-off-by: Thierry Reding
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The current debugfs interface is only partially useful. While it allows
listing supported frequencies and testing individual clock rates, it is
limited in that it can't be used to restrict the range of frequencies
that the driver is allowed to set. This is something we may want to use
to test adaptive scaling once that's implemented.Signed-off-by: Thierry Reding
08 Jan, 2020
2 commits
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Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li
Signed-off-by: Gregory CLEMENT -
Fix up inconsistent usage of upper and lowercase letters in "Exynos"
name."EXYNOS" is not an abbreviation but a regular trademarked name.
Therefore it should be written with lowercase letters starting with
capital letter.The lowercase "Exynos" name is promoted by its manufacturer Samsung
Electronics Co., Ltd., in advertisement materials and on website.Signed-off-by: Krzysztof Kozlowski
31 Dec, 2019
1 commit
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Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li
Acked-by: Lukasz Luba
Signed-off-by: Krzysztof Kozlowski
07 Dec, 2019
1 commit
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…nel/git/tegra/linux into arm/fixes
memory: tegra: Fixes for v5.5-rc1
This contains a fix for a kernel panic that can occur on suspend if EMC
timings are not available in device tree.* tag 'tegra-for-5.5-memory-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
memory: tegra30-emc: Fix panic on suspendLink: https://lore.kernel.org/r/20191204130753.3614278-1-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
06 Dec, 2019
1 commit
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Pull ARM SoC driver updates from Olof Johansson:
"Various driver updates for platforms:- A larger set of work on Tegra 2/3 around memory controller and
regulator features, some fuse cleanups, etc..- MMP platform drivers, in particular for USB PHY, and other smaller
additions.- Samsung Exynos 5422 driver for DMC (dynamic memory configuration),
and ASV (adaptive voltage), allowing the platform to run at more
optimal operating points.- Misc refactorings and support for RZ/G2N and R8A774B1 from Renesas
- Clock/reset control driver for TI/OMAP
- Meson-A1 reset controller support
- Qualcomm sdm845 and sda845 SoC IDs for socinfo"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (150 commits)
firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT
soc: fsl: add RCPM driver
dt-bindings: fsl: rcpm: Add 'little-endian' and update Chassis definition
memory: tegra: Consolidate registers definition into common header
memory: tegra: Ensure timing control debug features are disabled
memory: tegra: Introduce Tegra30 EMC driver
memory: tegra: Do not handle error from wait_for_completion_timeout()
memory: tegra: Increase handshake timeout on Tegra20
memory: tegra: Print a brief info message about EMC timings
memory: tegra: Pre-configure debug register on Tegra20
memory: tegra: Include io.h instead of iopoll.h
memory: tegra: Adapt for Tegra20 clock driver changes
memory: tegra: Don't set EMC rate to maximum on probe for Tegra20
memory: tegra: Add gr2d and gr3d to DRM IOMMU group
memory: tegra: Set DMA mask based on supported address bits
soc: at91: Add Atmel SFR SN (Serial Number) support
memory: atmel-ebi: switch to SPDX license identifiers
memory: atmel-ebi: move NUM_CS definition inside EBI driver
soc: mediatek: Refactor bus protection control
soc: mediatek: Refactor sram control
...
18 Nov, 2019
1 commit
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Trying to suspend driver results in a crash if timings aren't available in
device-tree.Reported-by: Jon Hunter
Fixes: e34212c75a68 ("memory: tegra: Introduce Tegra30 EMC driver")
Signed-off-by: Dmitry Osipenko
Acked-by: Jon Hunter
Tested-by: Jon Hunter
Signed-off-by: Thierry Reding
12 Nov, 2019
1 commit
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…/git/tegra/linux into arm/drivers
memory: tegra: Changes for v5.5-rc1
This contains a couple of fixes and adds support for EMC frequency
scaling on Tegra30.* tag 'tegra-for-5.5-memory-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
memory: tegra: Consolidate registers definition into common header
memory: tegra: Ensure timing control debug features are disabled
memory: tegra: Introduce Tegra30 EMC driver
memory: tegra: Do not handle error from wait_for_completion_timeout()
memory: tegra: Increase handshake timeout on Tegra20
memory: tegra: Print a brief info message about EMC timings
memory: tegra: Pre-configure debug register on Tegra20
memory: tegra: Include io.h instead of iopoll.h
memory: tegra: Adapt for Tegra20 clock driver changes
memory: tegra: Don't set EMC rate to maximum on probe for Tegra20
memory: tegra: Add gr2d and gr3d to DRM IOMMU group
memory: tegra: Set DMA mask based on supported address bits
clk: tegra: Add Tegra20/30 EMC clock implementationLink: https://lore.kernel.org/r/20191111143836.4027200-1-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
11 Nov, 2019
12 commits
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The Memory Controller registers definition is sparse and duplicated,
let's consolidate everything into a common place for consistency.Acked-by: Peter De Schrijver
Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
Timing control debug features should be disabled at a boot time, but you
never now and hence it's better to disable them explicitly because some of
those features are crucial for the driver to do a proper thing.Acked-by: Peter De Schrijver
Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
Introduce driver for the External Memory Controller (EMC) found on Tegra30
chips, it controls the external DRAM on the board. The purpose of this
driver is to program memory timing for external memory on the EMC clock
rate change.Acked-by: Peter De Schrijver
Signed-off-by: Dmitry Osipenko
Tested-by: Peter Geis
Signed-off-by: Thierry Reding -
Contrary to its wait_for_completion_timeout_interruptible() sibling, the
wait_for_completion_timeout() function does not return an error.Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
Turned out that it could take over a millisecond under some circumstances,
like running on a very low CPU/memory frequency. TRM says that handshake
happens when there is a "safe" moment, but not explains exactly what that
moment is. Apparently at least memory should be idling and thus the low
frequency should be a reasonable cause for a longer handshake delay.Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
During boot print how many memory timings got the driver and what's the
RAM code. This is a very useful information when something is wrong with
boards memory timing.Suggested-by: Marc Dietrich
Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
The driver expects certain debug features to be disabled in order to
work properly. Let's disable them explicitly for consistency and to not
rely on a boot state.Acked-by: Peter De Schrijver
Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
The register polling code was gone, but the included header change was
missed. Fix it up for consistency.Acked-by: Peter De Schrijver
Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
Now Tegra20 and Tegra30 EMC drivers should provide clock-rounding
functionality using the new Tegra clock driver API.Acked-by: Peter De Schrijver
Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
The memory frequency scaling will be managed by tegra20-devfreq driver
and PM QoS once all the prerequisite patches will get upstreamed.
The parent clock is now managed by the clock driver and we also should
assume that PLLM rate can't be changed on some devices (Galaxy Tab 10.1
for example). Altogether there is no point in touching of clock's rate
from the EMC driver.Acked-by: Peter De Schrijver
Signed-off-by: Dmitry Osipenko
Signed-off-by: Thierry Reding -
All of the devices making up the Tegra DRM device want to share a single
IOMMU domain. Put them into a single group to allow them to do that.Signed-off-by: Thierry Reding
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The memory controller on Tegra124 and later supports 34 or more address
bits. Advertise that by setting the DMA mask based on the number of the
address bits.Signed-off-by: Thierry Reding
09 Nov, 2019
1 commit
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…91/linux into arm/drivers
AT91 drivers for 5.5
- a new driver exposing the serial number registers through nvmem
- a few documentation and definition changes* tag 'at91-5.5-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
soc: at91: Add Atmel SFR SN (Serial Number) support
memory: atmel-ebi: switch to SPDX license identifiers
memory: atmel-ebi: move NUM_CS definition inside EBI driver
ARM: at91: Documentation: update the sama5d3 and armv7m datasheetsLink: https://lore.kernel.org/r/20191107221644.GA201884@piout.net
Signed-off-by: Olof Johansson <olof@lixom.net>
08 Nov, 2019
2 commits
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Adopt the SPDX license identifiers to ease license compliance
management.Signed-off-by: Tudor Ambarus
Link: https://lore.kernel.org/r/20190906151519.19442-1-tudor.ambarus@microchip.com
Signed-off-by: Alexandre Belloni -
The total number of EBI CS lines is described by the EBI controller
and not by the Matrix. Move the definition for the number of CS
inside EBI driver.Signed-off-by: Tudor Ambarus
Link: https://lore.kernel.org/r/20190906150632.19039-1-tudor.ambarus@microchip.com
Signed-off-by: Alexandre Belloni
04 Nov, 2019
1 commit
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…it/ssantosh/linux-keystone into arm/drivers
* 'for_5.5/driver-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
memory: emif: remove set but not used variables 'cs1_used' and 'custom_configs'
soc: ti: omap-prm: fix return value check in omap_prm_probe()
soc: ti: omap-prm: add omap5 PRM data
soc: ti: omap-prm: add am4 PRM data
soc: ti: omap-prm: add dra7 PRM data
soc: ti: omap-prm: add data for am33xx
soc: ti: omap-prm: add omap4 PRM data
soc: ti: omap-prm: add support for denying idle for reset clockdomain
soc: ti: omap-prm: poll for reset complete during de-assert
soc: ti: add initial PRM driver with reset control support
dt-bindings: omap: add new binding for PRM instancesLink: https://lore.kernel.org/r/1572372856-20598-1-git-send-email-santosh.shilimkar@oracle.com
Signed-off-by: Olof Johansson <olof@lixom.net>
30 Oct, 2019
1 commit
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drivers/memory/emif.c:1616:9: warning:
variable cs1_used set but not used [-Wunused-but-set-variable]
drivers/memory/emif.c:1624:36: warning:
variable custom_configs set but not used [-Wunused-but-set-variable]They are never used since introduction.
Signed-off-by: YueHaibing
Signed-off-by: Santosh Shilimkar
