Commit graph

95 commits

Author SHA1 Message Date
Anson Huang
b663b798d0 soc: imx: gpcv2: Use dev_err_probe() to simplify error handling
dev_err_probe() can reduce code size, uniform error handling and record the
defer probe reason etc., use it to simplify the code.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-22 20:57:57 +08:00
Linus Torvalds
822ef14e9d ARM: SoC driver updates for v5.9
A couple of subsystems have their own subsystem maintainers but choose
 to have the code merged through the soc tree as upstream, as the code
 tends to be used across multiple SoCs or has SoC specific drivers itself:
 
  - memory controllers:
      Krzysztof Kozlowski takes ownership of the drivers/memory
      subsystem and its drivers, starting out with a set of cleanup
      patches.
      A larger driver for the Tegra memory controller that was accidentally
      missed for v5.8 is now added.
 
  - reset controllers:
      Only minor updates to drivers/reset this time
 
  - firmware:
      The "turris mox" firmware driver gains support for signed firmware blobs
      The tegra firmware driver gets extended to export some debug information
      Various updates to i.MX firmware drivers, mostly cosmetic
 
  - ARM SCMI/SCPI:
      A new mechanism for platform notifications is added, among a number
      of minor changes.
 
  - optee:
      Probing of the TEE bus is rewritten to better support detection of
      devices that depend on the tee-supplicant user space.
      A new firmware based trusted platform module (fTPM) driver is added
      based on OP-TEE
 
  - SoC attributes:
      A new driver is added to provide a generic soc_device for identifying
      a machine through the SMCCC ARCH_SOC_ID firmware interface rather than
      by probing SoC family specific registers.
      The series also contains some cleanups to the common soc_device code.
 
 There are also a number of updates to SoC specific drivers,
 the main ones are:
 
  - Mediatek cmdq driver gains a few in-kernel interfaces
 
  - Minor updates to Qualcomm RPMh, socinfo, rpm drivers, mostly adding
    support for additional SoC variants
 
  - The Qualcomm GENI core code gains interconnect path voting and
    performance level support, and integrating this into a number of
    device drivers.
 
  - A new driver for Samsung Exynos5800 voltage coupler for
 
  - Renesas RZ/G2H (R8A774E1) SoC support gets added to a couple of SoC
    specific device drivers
 
  - Updates to the TI K3 Ring Accelerator driver
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Merge tag 'arm-drivers-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "A couple of subsystems have their own subsystem maintainers but choose
  to have the code merged through the soc tree as upstream, as the code
  tends to be used across multiple SoCs or has SoC specific drivers
  itself:

   - memory controllers:

     Krzysztof Kozlowski takes ownership of the drivers/memory subsystem
     and its drivers, starting out with a set of cleanup patches.

     A larger driver for the Tegra memory controller that was
     accidentally missed for v5.8 is now added.

   - reset controllers:

     Only minor updates to drivers/reset this time

   - firmware:

     The "turris mox" firmware driver gains support for signed firmware
     blobs The tegra firmware driver gets extended to export some debug
     information Various updates to i.MX firmware drivers, mostly
     cosmetic

   - ARM SCMI/SCPI:

     A new mechanism for platform notifications is added, among a number
     of minor changes.

   - optee:

     Probing of the TEE bus is rewritten to better support detection of
     devices that depend on the tee-supplicant user space. A new
     firmware based trusted platform module (fTPM) driver is added based
     on OP-TEE

   - SoC attributes:

     A new driver is added to provide a generic soc_device for
     identifying a machine through the SMCCC ARCH_SOC_ID firmware
     interface rather than by probing SoC family specific registers.

     The series also contains some cleanups to the common soc_device
     code.

  There are also a number of updates to SoC specific drivers, the main
  ones are:

   - Mediatek cmdq driver gains a few in-kernel interfaces

   - Minor updates to Qualcomm RPMh, socinfo, rpm drivers, mostly adding
     support for additional SoC variants

   - The Qualcomm GENI core code gains interconnect path voting and
     performance level support, and integrating this into a number of
     device drivers.

   - A new driver for Samsung Exynos5800 voltage coupler for

   - Renesas RZ/G2H (R8A774E1) SoC support gets added to a couple of SoC
     specific device drivers

   - Updates to the TI K3 Ring Accelerator driver"

* tag 'arm-drivers-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (164 commits)
  soc: qcom: geni: Fix unused label warning
  soc: qcom: smd-rpm: Fix kerneldoc
  memory: jz4780_nemc: Only request IO memory the driver will use
  soc: qcom: pdr: Reorder the PD state indication ack
  MAINTAINERS: Add Git repository for memory controller drivers
  memory: brcmstb_dpfe: Fix language typo
  memory: samsung: exynos5422-dmc: Correct white space issues
  memory: samsung: exynos-srom: Correct alignment
  memory: pl172: Enclose macro argument usage in parenthesis
  memory: of: Correct kerneldoc
  memory: omap-gpmc: Fix language typo
  memory: omap-gpmc: Correct white space issues
  memory: omap-gpmc: Use 'unsigned int' for consistency
  memory: omap-gpmc: Enclose macro argument usage in parenthesis
  memory: omap-gpmc: Correct kerneldoc
  memory: mvebu-devbus: Align with open parenthesis
  memory: mvebu-devbus: Add missing braces to all arms of if statement
  memory: bt1-l2-ctl: Add blank lines after declarations
  soc: TI knav_qmss: make symbol 'knav_acc_range_ops' static
  firmware: ti_sci: Replace HTTP links with HTTPS ones
  ...
2020-08-03 19:30:59 -07:00
Peng Fan
d82bcef515 soc: imx: select ARM_GIC_V3 for i.MX8M
Select ARM_GIC_V3, then it is able to use gic v3 driver in aarch32
mode linux on aarch64 hardware. For aarch64 mode, it not hurts
to select ARM_GIC_V3.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-07-13 16:42:32 +08:00
Peng Fan
7f6e8dffc3 soc: imx: check ls1021a
fsl,ls1021a is a mach under arch/arm/mach-imx/, however it could
not use the soc driver which will break caam on ls1021a platform.

So directly return if it is compatible with fsl,ls1021a.

Fixes: 52102a3ba6 ("soc: imx: move cpu code to drivers/soc/imx")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Tested-by: Horia Geantă <horia.geanta@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-07-13 16:28:02 +08:00
Anson Huang
a24015fa8b firmware: imx: Move i.MX SCU soc driver into imx firmware folder
The i.MX SCU soc driver depends on SCU firmware driver, so it has to
use platform driver model for proper defer probe operation, since
it has no device binding in DT file, a simple platform device is
created together inside the platform driver. To make it more clean,
we can just move the entire SCU soc driver into imx firmware folder
and initialized by i.MX SCU firmware driver.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-07-13 10:02:00 +08:00
Peng Fan
a721321446 soc: imx8m: fix build warning
Fix the build warning with x86_64-randconfig
>> drivers/soc/imx/soc-imx8m.c:150:34: warning: unused variable
>> 'imx8_soc_match' [-Wunused-const-variable]
static const struct of_device_id imx8_soc_match[] = { ^

Fixes: fc40200ebf ("soc: imx: increase build coverage for imx8m soc driver")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-06-24 14:33:28 +08:00
Anson Huang
c95c9693b1 soc: imx8m: Correct i.MX8MP UID fuse offset
Correct i.MX8MP UID fuse offset according to fuse map:

UID_LOW: 0x420
UID_HIGH: 0x430

Fixes: fc40200ebf ("soc: imx: increase build coverage for imx8m soc driver")
Fixes: 18f662a738 ("soc: imx: Add i.MX8MP SoC driver support")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-06-23 19:45:21 +08:00
Peng Fan
f42f3e7f4d soc: imx: scu: use devm_kasprintf
Use devm_kasprintf to simplify code

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-06-23 15:12:41 +08:00
Linus Torvalds
828f3e18e1 ARM/SoC: drivers for v5.7
These are updates to SoC specific drivers that did not have
 another subsystem maintainer tree to go through for some
 reason:
 
 - Some bus and memory drivers for the MIPS P5600 based
   Baikal-T1 SoC that is getting added through the MIPS tree.
 
 - There are new soc_device identification drivers for TI K3,
   Qualcomm MSM8939
 
 - New reset controller drivers for NXP i.MX8MP, Renesas
   RZ/G1H, and Hisilicon hi6220
 
 - The SCMI firmware interface can now work across ARM SMC/HVC
   as a transport.
 
 - Mediatek platforms now use a new driver for their "MMSYS"
   hardware block that controls clocks and some other aspects
   in behalf of the media and gpu drivers.
 
 - Some Tegra processors have improved power management
   support, including getting woken up by the PMIC and cluster
   power down during idle.
 
 - A new v4l staging driver for Tegra is added.
 
 - Cleanups and minor bugfixes for TI, NXP, Hisilicon,
   Mediatek, and Tegra.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM/SoC driver updates from Arnd Bergmann:
 "These are updates to SoC specific drivers that did not have another
  subsystem maintainer tree to go through for some reason:

   - Some bus and memory drivers for the MIPS P5600 based Baikal-T1 SoC
     that is getting added through the MIPS tree.

   - There are new soc_device identification drivers for TI K3, Qualcomm
     MSM8939

   - New reset controller drivers for NXP i.MX8MP, Renesas RZ/G1H, and
     Hisilicon hi6220

   - The SCMI firmware interface can now work across ARM SMC/HVC as a
     transport.

   - Mediatek platforms now use a new driver for their "MMSYS" hardware
     block that controls clocks and some other aspects in behalf of the
     media and gpu drivers.

   - Some Tegra processors have improved power management support,
     including getting woken up by the PMIC and cluster power down
     during idle.

   - A new v4l staging driver for Tegra is added.

   - Cleanups and minor bugfixes for TI, NXP, Hisilicon, Mediatek, and
     Tegra"

* tag 'arm-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (155 commits)
  clk: sprd: fix compile-testing
  bus: bt1-axi: Build the driver into the kernel
  bus: bt1-apb: Build the driver into the kernel
  bus: bt1-axi: Use sysfs_streq instead of strncmp
  bus: bt1-axi: Optimize the return points in the driver
  bus: bt1-apb: Use sysfs_streq instead of strncmp
  bus: bt1-apb: Use PTR_ERR_OR_ZERO to return from request-regs method
  bus: bt1-apb: Fix show/store callback identations
  bus: bt1-apb: Include linux/io.h
  dt-bindings: memory: Add Baikal-T1 L2-cache Control Block binding
  memory: Add Baikal-T1 L2-cache Control Block driver
  bus: Add Baikal-T1 APB-bus driver
  bus: Add Baikal-T1 AXI-bus driver
  dt-bindings: bus: Add Baikal-T1 APB-bus binding
  dt-bindings: bus: Add Baikal-T1 AXI-bus binding
  staging: tegra-video: fix V4L2 dependency
  tee: fix crypto select
  drivers: soc: ti: knav_qmss_queue: Make knav_gp_range_ops static
  soc: ti: add k3 platforms chipid module driver
  dt-bindings: soc: ti: add binding for k3 platforms chipid module
  ...
2020-06-04 19:56:20 -07:00
Arnd Bergmann
66ee9359b0 i.MX SoC changes for 5.8:
- Add soc device support for Vybrid/VF platform.
 - Move the i.MX soc device registration code from mach-imx to
   drivers/soc/imx for possible future consolidation with i.MX8 code.
 - A small fixup to make pcm970_sja1000_platform_data static.
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Merge tag 'imx-soc-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/soc

i.MX SoC changes for 5.8:

- Add soc device support for Vybrid/VF platform.
- Move the i.MX soc device registration code from mach-imx to
  drivers/soc/imx for possible future consolidation with i.MX8 code.
- A small fixup to make pcm970_sja1000_platform_data static.

* tag 'imx-soc-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  soc: imx: move cpu code to drivers/soc/imx
  ARM: imx: move cpu definitions into a header
  ARM: imx: use device_initcall for imx_soc_device_init
  ARM: imx: pcm037: make pcm970_sja1000_platform_data static
  ARM: vf610: report soc info via soc device

Link: https://lore.kernel.org/r/20200523032516.11016-2-shawnguo@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-05-26 00:03:12 +02:00
Arnd Bergmann
7b972f3830 i.MX drivers update for 5.8:
- Optimize imx-scu driver to use one TX and one RX instead of four for
   talking to SCU.
 - Fix one possible message header corruption where the response is
   longer than the request.
 - Move System Control defines into dt-bindings header, so that DT can
   use them as well.
 - A couple of small fixups.
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Merge tag 'imx-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

i.MX drivers update for 5.8:

- Optimize imx-scu driver to use one TX and one RX instead of four for
  talking to SCU.
- Fix one possible message header corruption where the response is
  longer than the request.
- Move System Control defines into dt-bindings header, so that DT can
  use them as well.
- A couple of small fixups.

* tag 'imx-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  firmware: imx: scu: Fix possible memory leak in imx_scu_probe()
  dt-bindings: firmware: imx: Add more system controls and PM clock types
  dt-bindings: firmware: imx: Move system control into dt-binding headfile
  firmware: imx: scu: Fix corruption of header
  firmware: imx-scu: Support one TX and one RX
  soc: imx8m: No need to put node when of_find_compatible_node() failed

Link: https://lore.kernel.org/r/20200523032516.11016-1-shawnguo@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-05-26 00:00:47 +02:00
Peng Fan
52102a3ba6 soc: imx: move cpu code to drivers/soc/imx
Move the soc device register code to drivers/soc/imx to align with
i.MX8.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-05-20 23:03:50 +08:00
Arnd Bergmann
4517f4817d soc: imx8: select SOC_BUS
Compile-testing the driver can result in a link failure
when CONFIG_SOC_BUS is disabled:

x86_64-linux-ld: drivers/soc/imx/soc-imx8m.o: in function `imx8_soc_init':
soc-imx8m.c:(.init.text+0x28d): undefined reference to `soc_device_register'

Select it from Kconfig, as we do from the other SoC drivers.

Link: https://lore.kernel.org/r/20200409075208.2824062-1-arnd@arndb.de
Fixes: fc40200ebf ("soc: imx: increase build coverage for imx8m soc driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-04-17 17:20:44 +02:00
Anson Huang
04df45fba5 soc: imx8m: No need to put node when of_find_compatible_node() failed
No need to put node when of_find_compatible_node() failed, return
immediately to simplify the code.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-04-14 21:51:58 +08:00
Linus Torvalds
d18292dc07 ARM: driver updates
These are the usual updates for SoC specific device drivers and related
 subsystems that don't have their own top-level maintainers:
 
 - ARM SCMI/SCPI updates to allow pluggable transport layers
 
 - TEE subsystem cleanups
 
 - A new driver for the Amlogic secure power domain controller
 
 - Various driver updates for the NXP Layerscape DPAA2, NXP i.MX SCU and
   TI OMAP2+ sysc drivers.
 
 - Qualcomm SoC driver updates, including a new library module for
   "protection domain" notifications
 
 - Lots of smaller bugfixes and cleanups in other drivers
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-drivers-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM driver updates from Arnd Bergmann:
 "These are the usual updates for SoC specific device drivers and
  related subsystems that don't have their own top-level maintainers:

   - ARM SCMI/SCPI updates to allow pluggable transport layers

   - TEE subsystem cleanups

   - A new driver for the Amlogic secure power domain controller

   - Various driver updates for the NXP Layerscape DPAA2, NXP i.MX SCU
     and TI OMAP2+ sysc drivers.

   - Qualcomm SoC driver updates, including a new library module for
     "protection domain" notifications

   - Lots of smaller bugfixes and cleanups in other drivers"

* tag 'arm-drivers-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (70 commits)
  soc: fsl: qe: fix sparse warnings for ucc_slow.c
  soc: fsl: qe: ucc_slow: remove 0 assignment for kzalloc'ed structure
  soc: fsl: qe: fix sparse warnings for ucc_fast.c
  soc: fsl: qe: fix sparse warnings for qe_ic.c
  soc: fsl: qe: fix sparse warnings for ucc.c
  soc: fsl: qe: fix sparse warning for qe_common.c
  soc: fsl: qe: fix sparse warnings for qe.c
  soc: qcom: Fix QCOM_APR dependencies
  soc: qcom: pdr: Avoid uninitialized use of found in pdr_indication_cb
  soc: imx: drop COMPILE_TEST for IMX_SCU_SOC
  firmware: imx: add COMPILE_TEST for IMX_SCU driver
  soc: imx: gpc: fix power up sequencing
  soc: imx: increase build coverage for imx8m soc driver
  soc: qcom: apr: Add avs/audio tracking functionality
  dt-bindings: soc: qcom: apr: Add protection domain bindings
  soc: qcom: Introduce Protection Domain Restart helpers
  devicetree: bindings: firmware: add ipq806x to qcom_scm
  memory: tegra: Correct debugfs clk rate-range on Tegra124
  memory: tegra: Correct debugfs clk rate-range on Tegra30
  memory: tegra: Correct debugfs clk rate-range on Tegra20
  ...
2020-04-03 15:05:35 -07:00
Peng Fan
2a52651292 soc: imx: drop COMPILE_TEST for IMX_SCU_SOC
With COMPILE_TEST, there will be build error, because IMX_SCU
might be set to n, so drop COMPILE_TEST.

Suggested-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-03-16 11:44:40 +08:00
Lucas Stach
e0ea2d11f8 soc: imx: gpc: fix power up sequencing
Currently we wait only until the PGC inverts the isolation setting
before disabling the peripheral clocks. This doesn't ensure that the
reset is properly propagated through the peripheral devices in the
power domain.

Wait until the PGC signals that the power up request is done and
wait a bit for resets to propagate before disabling the clocks.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-03-16 11:39:02 +08:00
Peng Fan
fc40200ebf soc: imx: increase build coverage for imx8m soc driver
The soc-imx8.c driver is actually for i.MX8M family, so rename it
to soc-imx8m.c.

Use CONFIG_SOC_IMX8M as build gate, not CONFIG_ARCH_MXC, to control
whether build this driver, also make it possible for compile test.

Default set it to y for ARCH_MXC && ARM64

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-03-16 11:39:02 +08:00
Leonard Crestez
f10e58a5d2 soc: imx-scu: Align imx sc msg structs to 4
The imx SC api strongly assumes that messages are composed out of
4-bytes words but some of our message structs have odd sizeofs.

This produces many oopses with CONFIG_KASAN=y.

Fix by marking with __aligned(4).

Fixes: 73feb4d0f8 ("soc: imx-scu: Add SoC UID(unique identifier) support")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-02-24 15:29:43 +08:00
Leonard Crestez
b5cc96d3bf soc: imx: gpcv2: include linux/sizes.h
This header is included indirectly on arm/arm64 but not on x86 so
CONFIG_COMPILE_TEST breaks. Fix by including <linux/sizes.h> directly.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-02-14 10:03:09 +08:00
Krzysztof Kozlowski
83a4c74c01 soc: imx: Enable compile testing of IMX_SCU_SOC
IMX_SCU_SOC can be compile tested to increase build coverage.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-01-09 17:20:10 +08:00
Anson Huang
18f662a738 soc: imx: Add i.MX8MP SoC driver support
Add i.MX8MP SoC driver support:

root@imx8mpevk:~# cat /sys/devices/soc0/family
Freescale i.MX

root@imx8mpevk:~# cat /sys/devices/soc0/machine
FSL i.MX8MP EVK

root@imx8mpevk:~# cat /sys/devices/soc0/soc_id
i.MX8MP

root@imx8mpevk:~# cat /sys/devices/soc0/revision
1.0

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-01-09 15:52:04 +08:00
Lucas Stach
cd262dbfd7 soc: imx8: print SoC type and revision
This is useful information to have when looking through system logs,
so add it to the output.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-12-09 15:20:55 +08:00
Linus Torvalds
ec939e4c94 ARM: SoC-related driver updates
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
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

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
  ...
2019-12-05 11:43:31 -08:00
Leonard Crestez
768e1a8e09 soc: imx8mq: Read SOC revision from TF-A
SOC revision on older imx8mq is not available in fuses so on anything
other than B1 current code just reports "unknown".

TF-A already handles this by parsing the ROM and exposes the value
through a SMC call. Call this instead of reimplementing the workaround
in the kernel itself.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-11-04 11:32:12 +08:00
Anson Huang
7ae399b7d0 soc: imx-scu: Using existing serial_number instead of UID
The soc_device_attribute structure already contains a serial_number
attribute to show SoC's unique ID, just use it to show SoC's unique
ID instead of creating a new file called soc_uid.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-10-28 21:30:12 +08:00
Anson Huang
a0708f559e soc: imx8: Using existing serial_number instead of UID
The soc_device_attribute structure already contains a serial_number
attribute to show SoC's unique ID, just use it to show SoC's unique
ID instead of creating a new file called soc_uid.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-10-28 21:30:12 +08:00
Ben Dooks
96ed1044fa soc: imx: gpc: fix initialiser format
Make the initialiers in imx_gpc_domains C99 format to fix the
following sparse warnings:

drivers/soc/imx/gpc.c:252:30: warning: obsolete array initializer, use C99 syntax
drivers/soc/imx/gpc.c:258:29: warning: obsolete array initializer, use C99 syntax
drivers/soc/imx/gpc.c:269:34: warning: obsolete array initializer, use C99 syntax
drivers/soc/imx/gpc.c:278:30: warning: obsolete array initializer, use C99 syntax

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Fixes: b0682d485f ("soc: imx: gpc: use GPC_PGC_DOMAIN_* indexes")
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-10-26 19:47:31 +08:00
Anson Huang
30ca9b0474 soc: imx: imx-scu: Getting UID from SCU should have response
The SCU firmware API for getting UID should have response,
otherwise, the message stored in function stack could be
released and then the response data received from SCU will be
stored into that released stack and cause kernel NULL pointer
dump.

Fixes: 73feb4d0f8 ("soc: imx-scu: Add SoC UID(unique identifier) support")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-10-06 09:21:38 +08:00
Guido Günther
968c6f4b3c soc: imx: gpcv2: Print the correct error code
The current code prints 'ret' (thus 0) while it should use 'err'.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-08-24 22:41:08 +02:00
Anson Huang
73feb4d0f8 soc: imx-scu: Add SoC UID(unique identifier) support
Add i.MX SCU SoC's UID(unique identifier) support, user
can read it from sysfs:

root@imx8qxpmek:~# cat /sys/devices/soc0/soc_uid
7B64280B57AC1898

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-08-12 14:34:54 +02:00
Anson Huang
8dfe397431 soc: imx8: Add i.MX8MM UID(unique identifier) support
Add i.MX8MM SoC UID(unique identifier) support, user
can read it from sysfs:

root@imx8mmevk:~# cat /sys/devices/soc0/soc_uid
B365FA0A5C85D6EE

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-07-22 09:36:48 +08:00
Anson Huang
3026d0b7a4 soc: imx8: Add i.MX8MQ UID(unique identifier) support
Add i.MX8MQ SoC UID(unique identifier) support, user
can read it from sysfs:

root@imx8mqevk:~# cat /sys/devices/soc0/soc_uid
D56911D6F060954B

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-07-22 09:36:48 +08:00
Linus Torvalds
8362fd64f0 ARM: SoC-related driver updates
Various driver updates for platforms and a couple of the small driver
 subsystems we merge through our tree:
 
  - A driver for SCU (system control) on NXP i.MX8QXP
  - Qualcomm Always-on Subsystem messaging driver (AOSS QMP)
  - Qualcomm PM support for MSM8998
  - Support for a newer version of DRAM PHY driver for Broadcom (DPFE)
  - Reset controller support for Bitmain BM1880
  - TI SCI (System Control Interface) support for CPU control on AM654
    processors
  - More TI sysc refactoring and rework
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Merge tag 'armsoc-drivers' of 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 and a couple of the small driver
  subsystems we merge through our tree:

   - A driver for SCU (system control) on NXP i.MX8QXP

   - Qualcomm Always-on Subsystem messaging driver (AOSS QMP)

   - Qualcomm PM support for MSM8998

   - Support for a newer version of DRAM PHY driver for Broadcom (DPFE)

   - Reset controller support for Bitmain BM1880

   - TI SCI (System Control Interface) support for CPU control on AM654
     processors

   - More TI sysc refactoring and rework"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (84 commits)
  reset: remove redundant null check on pointer dev
  soc: rockchip: work around clang warning
  dt-bindings: reset: imx7: Fix the spelling of 'indices'
  soc: imx: Add i.MX8MN SoC driver support
  soc: aspeed: lpc-ctrl: Fix probe error handling
  soc: qcom: geni: Add support for ACPI
  firmware: ti_sci: Fix gcc unused-but-set-variable warning
  firmware: ti_sci: Use the correct style for SPDX License Identifier
  soc: imx8: Use existing of_root directly
  soc: imx8: Fix potential kernel dump in error path
  firmware/psci: psci_checker: Park kthreads before stopping them
  memory: move jedec_ddr.h from include/memory to drivers/memory/
  memory: move jedec_ddr_data.c from lib/ to drivers/memory/
  MAINTAINERS: Remove myself as qcom maintainer
  soc: aspeed: lpc-ctrl: make parameter optional
  soc: qcom: apr: Don't use reg for domain id
  soc: qcom: fix QCOM_AOSS_QMP dependency and build errors
  memory: tegra: Fix -Wunused-const-variable
  firmware: tegra: Early resume BPMP
  soc/tegra: Select pinctrl for Tegra194
  ...
2019-07-19 17:13:56 -07:00
Rafael J. Wysocki
fba7402017 Merge branch 'cpufreq/arm/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Pull ARM cpufreq changes for v5.3 from Viresh Kumar:

"This pull request contains:

 - Minor fixes for brcmstb driver (Florian).
 - New imx-cpufreq driver, its bindings and code around it (Leonard).
 - New Raspberry Pi driver (Nicolas).
 - Minor fix for s5pv210 driver (Pawel).
 - Minor cleanup for armada driver (YueHaibing)."

* 'cpufreq/arm/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  cpufreq: s5pv210: Don't flood kernel log after cpufreq change
  cpufreq: add driver for Raspberry Pi
  cpufreq: Switch imx7d to imx-cpufreq-dt for speed grading
  cpufreq: imx-cpufreq-dt: Remove global platform match list
  cpufreq: brcmstb-avs-cpufreq: Fix types for voltage/frequency
  cpufreq: brcmstb-avs-cpufreq: Fix initial command check
  cpufreq: armada-37xx: Remove set but not used variable 'freq'
  cpufreq: imx-cpufreq-dt: Fix no OPPs available on unfused parts
  dt-bindings: imx-cpufreq-dt: Document opp-supported-hw usage
  cpufreq: Add imx-cpufreq-dt driver
2019-06-26 10:51:27 +02:00
Olof Johansson
21000823f5 i.MX driver changes for 5.3:
- Add i.MX SCU based SoC bus driver for i.MX8QXP SoC support, which
    talks to SCU firmware for getting SoC ID and revision.
  - Update soc-imx8 bus driver to read imx8mm soc revision from anatop.
  - Add i.MX8MN SoC bus support into soc-imx8 driver.
  - Various small improvements on soc-imx8 bus driver.
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Merge tag 'imx-drivers-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

i.MX driver changes for 5.3:
 - Add i.MX SCU based SoC bus driver for i.MX8QXP SoC support, which
   talks to SCU firmware for getting SoC ID and revision.
 - Update soc-imx8 bus driver to read imx8mm soc revision from anatop.
 - Add i.MX8MN SoC bus support into soc-imx8 driver.
 - Various small improvements on soc-imx8 bus driver.

* tag 'imx-drivers-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  soc: imx: Add i.MX8MN SoC driver support
  soc: imx8: Use existing of_root directly
  soc: imx8: Fix potential kernel dump in error path
  soc: imx: soc-imx8: Correct return value of error handle
  soc: imx: soc-imx8: Avoid unnecessary of_node_put() in error handling
  soc: imx: Add SCU SoC info driver support
  soc: imx: Read imx8mm soc revision from anatop

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-06-25 05:43:40 -07:00
Anson Huang
db10496c00 soc: imx: Add i.MX8MN SoC driver support
This patch adds i.MX8MN SoC driver support:

root@imx8mnevk:~# cat /sys/devices/soc0/family
Freescale i.MX

root@imx8mnevk:~# cat /sys/devices/soc0/machine
NXP i.MX8MNano DDR4 EVK board

root@imx8mnevk:~# cat /sys/devices/soc0/soc_id
i.MX8MN

root@imx8mnevk:~# cat /sys/devices/soc0/revision
1.0

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-06-24 09:15:57 +08:00
Anson Huang
283172b019 soc: imx8: Use existing of_root directly
There is common of_root for reference, no need to find it
from DT again, use of_root directly to make driver simple.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-06-18 21:27:00 +08:00
Anson Huang
1bcbe73008 soc: imx8: Fix potential kernel dump in error path
When SoC's revision value is 0, SoC driver will print out
"unknown" in sysfs's revision node, this "unknown" is a
static string which can NOT be freed, this will caused below
kernel dump in later error path which calls kfree:

kernel BUG at mm/slub.c:3942!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
Modules linked in:
CPU: 2 PID: 1 Comm: swapper/0 Not tainted 5.2.0-rc4-next-20190611-00023-g705146c-dirty #2197
Hardware name: NXP i.MX8MQ EVK (DT)
pstate: 60000005 (nZCv daif -PAN -UAO)
pc : kfree+0x170/0x1b0
lr : imx8_soc_init+0xc0/0xe4
sp : ffff00001003bd10
x29: ffff00001003bd10 x28: ffff00001121e0a0
x27: ffff000011482000 x26: ffff00001117068c
x25: ffff00001121e100 x24: ffff000011482000
x23: ffff000010fe2b58 x22: ffff0000111b9ab0
x21: ffff8000bd9dfba0 x20: ffff0000111b9b70
x19: ffff7e000043f880 x18: 0000000000001000
x17: ffff000010d05fa0 x16: ffff0000122e0000
x15: 0140000000000000 x14: 0000000030360000
x13: ffff8000b94b5bb0 x12: 0000000000000038
x11: ffffffffffffffff x10: ffffffffffffffff
x9 : 0000000000000003 x8 : ffff8000b9488147
x7 : ffff00001003bc00 x6 : 0000000000000000
x5 : 0000000000000003 x4 : 0000000000000003
x3 : 0000000000000003 x2 : b8793acd604edf00
x1 : ffff7e000043f880 x0 : ffff7e000043f888
Call trace:
 kfree+0x170/0x1b0
 imx8_soc_init+0xc0/0xe4
 do_one_initcall+0x58/0x1b8
 kernel_init_freeable+0x1cc/0x288
 kernel_init+0x10/0x100
 ret_from_fork+0x10/0x18

This patch fixes this potential kernel dump when a chip's
revision is "unknown", it is done by checking whether the
revision space can be freed.

Fixes: a7e26f356c ("soc: imx: Add generic i.MX8 SoC driver")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-06-18 16:59:34 +08:00
Anson Huang
4c396a604a soc: imx: soc-imx8: Correct return value of error handle
Current implementation of i.MX8 SoC driver returns -ENODEV
for all cases of error during initialization, this is incorrect.
This patch fixes them using correct return value according
to different errors.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-06-05 14:09:24 +08:00
Anson Huang
d8dfab0f4d soc: imx: soc-imx8: Avoid unnecessary of_node_put() in error handling
of_node_put() is called after of_match_node() successfully called,
then in the following error handling, of_node_put() is called again
which is unnecessary, this patch adjusts the location of of_node_put()
to avoid such scenario.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-06-05 14:08:10 +08:00
Anson Huang
15f5276a2f soc: imx: Add SCU SoC info driver support
Add i.MX SCU SoC info driver to support i.MX8QXP SoC, introduce
driver dependency into Kconfig as CONFIG_IMX_SCU must be
selected to support i.MX SCU SoC driver, also need to use
platform driver model to make sure IMX_SCU driver is probed
before i.MX SCU SoC driver.

With this patch, SoC info can be read from sysfs:

i.mx8qxp-mek# cat /sys/devices/soc0/family
Freescale i.MX

i.mx8qxp-mek# cat /sys/devices/soc0/soc_id
0x2

i.mx8qxp-mek# cat /sys/devices/soc0/machine
Freescale i.MX8QXP MEK

i.mx8qxp-mek# cat /sys/devices/soc0/revision
1.1

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-06-03 20:30:37 +08:00
Thomas Gleixner
ec8f24b7fa treewide: Add SPDX license identifier - Makefile/Kconfig
Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 10:50:46 +02:00
Leonard Crestez
2b14b802ad soc: imx: Read imx8mm soc revision from anatop
Like on imx6/7 we can read version information from a register in
anatop, and in the same format.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-05-20 15:20:41 +08:00
Leonard Crestez
4d28ba1d62 cpufreq: Add imx-cpufreq-dt driver
Right now in upstream imx8m cpufreq support just lists a common subset
of OPPs because the higher ones should only be attempted after checking
speed grading in fuses.

Add a small driver which checks speed grading from nvmem cells before
registering cpufreq-dt.

This driver allows unlocking all frequencies for imx8mm and imx8mq and
could be applied to other chips like imx7d

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2019-05-20 12:47:48 +05:30
Linus Torvalds
dc413a90ed ARM: SoC-related driver updates
Various driver updates for platforms and a couple of the small driver
 subsystems we merge through our tree:
 
 Among the larger pieces:
 
  - Power management improvements for TI am335x and am437x (RTC suspend/wake)
  - Misc new additions for Amlogic (socinfo updates)
  - ZynqMP FPGA manager
  - Nvidia improvements for reset/powergate handling
  - PMIC wrapper for Mediatek MT8516
  - Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers
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Merge tag 'armsoc-drivers' of 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 and a couple of the small driver
  subsystems we merge through our tree:

  Among the larger pieces:

   - Power management improvements for TI am335x and am437x (RTC
     suspend/wake)

   - Misc new additions for Amlogic (socinfo updates)

   - ZynqMP FPGA manager

   - Nvidia improvements for reset/powergate handling

   - PMIC wrapper for Mediatek MT8516

   - Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (57 commits)
  soc: aspeed: fix Kconfig
  soc: add aspeed folder and misc drivers
  spi: zynqmp: Fix build break
  soc: imx: Add generic i.MX8 SoC driver
  MAINTAINERS: Update email for Qualcomm SoC maintainer
  memory: tegra: Fix a typos for "fdcdwr2" mc client
  Revert "ARM: tegra: Restore memory arbitration on resume from LP1 on Tegra30+"
  memory: tegra: Replace readl-writel with mc_readl-mc_writel
  memory: tegra: Fix integer overflow on tick value calculation
  memory: tegra: Fix missed registers values latching
  ARM: tegra: cpuidle: Handle tick broadcasting within cpuidle core on Tegra20/30
  optee: allow to work without static shared memory
  soc/tegra: pmc: Move powergate initialisation to probe
  soc/tegra: pmc: Remove reset sysfs entries on error
  soc/tegra: pmc: Fix reset sources and levels
  soc: amlogic: meson-gx-pwrc-vpu: Add support for G12A
  soc: amlogic: meson-gx-pwrc-vpu: Fix power on/off register bitmask
  fpga manager: Adding FPGA Manager support for Xilinx zynqmp
  dt-bindings: fpga: Add bindings for ZynqMP fpga driver
  firmware: xilinx: Add fpga API's
  ...
2019-05-16 09:19:14 -07:00
Leonard Crestez
8d5d766f00 soc: imx: gpc: Use GENPD_FLAG_RPM_ALWAYS_ON for ERR009619
This allows PU domain to be turned off in suspend and save power.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-05-13 10:51:31 +02:00
Abel Vesa
a7e26f356c soc: imx: Add generic i.MX8 SoC driver
Add generic i.MX8 SoC driver along with the i.MX8MQ SoC specific code.
For now, only i.MX8MQ revision B1 is supported. For any other, i.MX8MQ
revision it will print 'unknown'.

Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-04-20 21:26:36 +08:00
Anson Huang
9f735c4e94 soc: imx: gpcv2: use devm_platform_ioremap_resource() to simplify code
Use the new helper devm_platform_ioremap_resource() which wraps the
platform_get_resource() and devm_ioremap_resource() together, to
simplify the code.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-04-11 15:16:44 +08:00
Anson Huang
ccc1de31ab soc: imx: gpc: use devm_platform_ioremap_resource() to simplify code
Use the new helper devm_platform_ioremap_resource() which wraps the
platform_get_resource() and devm_ioremap_resource() together, to
simplify the code.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-04-11 15:16:39 +08:00