linux-toradex.git/drivers/soc/tegra, branch v5.16

soc/tegra: fuse: Fix bitwise vs. logical OR warning

2021-12-15T16:19:06+00:00

A new warning in clang points out two instances where boolean
expressions are being used with a bitwise OR instead of logical OR:

drivers/soc/tegra/fuse/speedo-tegra20.c:72:9: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
                reg = tegra_fuse_read_spare(i) |
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
                                               ||
drivers/soc/tegra/fuse/speedo-tegra20.c:72:9: note: cast one or both operands to int to silence this warning
drivers/soc/tegra/fuse/speedo-tegra20.c:87:9: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
                reg = tegra_fuse_read_spare(i) |
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
                                               ||
drivers/soc/tegra/fuse/speedo-tegra20.c:87:9: note: cast one or both operands to int to silence this warning
2 warnings generated.

The motivation for the warning is that logical operations short circuit
while bitwise operations do not.

In this instance, tegra_fuse_read_spare() is not semantically returning
a boolean, it is returning a bit value. Use u32 for its return type so
that it can be used with either bitwise or boolean operators without any
warnings.

Fixes: 25cd5a391478 ("ARM: tegra: Add speedo-based process identification")
Link: https://github.com/ClangBuiltLinux/linux/issues/1488
Suggested-by: Michał Mirosław 
Signed-off-by: Nathan Chancellor 
Reviewed-by: Nick Desaulniers 
Signed-off-by: Thierry Reding

soc/tegra: pmc: Use devm_platform_ioremap_resource()

2021-10-08T19:42:41+00:00

Use the devm_platform_ioremap_resource() helper instead of calling
platform_get_resource() and devm_ioremap_resource() separately.

Signed-off-by: Cai Huoqing 
Signed-off-by: Thierry Reding

soc/tegra: Add Tegra186 ARI driver

2021-10-08T19:42:38+00:00

Add a driver to hook into panic notifiers and print machine check
status for debugging. Status information is retrieved via SMC. This
is supported by upstream ARM Trusted Firmware.

Signed-off-by: Mikko Perttunen 
Signed-off-by: Thierry Reding

soc/tegra: Fix an error handling path in tegra_powergate_power_up()

2021-10-07T18:01:54+00:00

If an error occurs after a successful tegra_powergate_enable_clocks()
call, it must be undone by a tegra_powergate_disable_clocks() call, as
already done in the below and above error handling paths of this function.

Update the 'goto' to branch at the correct place of the error handling
path.

Fixes: a38045121bf4 ("soc/tegra: pmc: Add generic PM domain support")
Signed-off-by: Christophe JAILLET 
Reviewed-by: Jon Hunter 
Signed-off-by: Thierry Reding

soc/tegra: pmc: Expose USB regmap to all SoCs

2021-10-04T21:11:09+00:00

All Tegra SoCs prior to Tegra186 have USB power controls within the Power
Management controller. These controls need to be configured by USB driver.
Expose the regmap to these SoCs.

Signed-off-by: Dmitry Osipenko 
Signed-off-by: Thierry Reding

soc/tegra: pmc: Disable PMC state syncing

2021-10-04T20:10:54+00:00

Disable PMC state syncing in order to ensure that we won't break older
kernels once device-trees will be updated with the addition of the power
domains. This also allows to apply device-tree PM patches independently
from the driver patches.

Signed-off-by: Dmitry Osipenko 
Signed-off-by: Thierry Reding

Merge tag 'drivers-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2021-09-01T22:25:28+00:00

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are updates for drivers that are tied to a particular SoC,
  including the correspondig device tree bindings:

   - A couple of reset controller changes for unisoc, uniphier, renesas
     and zte platforms

   - memory controller driver fixes for omap and tegra

   - Rockchip io domain driver updates

   - Lots of updates for qualcomm platforms, mostly touching their
     firmware and power management drivers

   - Tegra FUSE and firmware driver updateѕ

   - Support for virtio transports in the SCMI firmware framework

   - cleanup of ixp4xx drivers, towards enabling multiplatform support
     and bringing it up to date with modern platforms

   - Minor updates for keystone, mediatek, omap, renesas"

* tag 'drivers-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (96 commits)
  reset: simple: remove ZTE details in Kconfig help
  soc: rockchip: io-domain: Remove unneeded semicolon
  soc: rockchip: io-domain: add rk3568 support
  dt-bindings: power: add rk3568-pmu-io-domain support
  bus: ixp4xx: return on error in ixp4xx_exp_probe()
  soc: renesas: Prefer memcpy() over strcpy()
  firmware: tegra: Stop using seq_get_buf()
  soc/tegra: fuse: Enable fuse clock on suspend for Tegra124
  soc/tegra: fuse: Add runtime PM support
  soc/tegra: fuse: Clear fuse->clk on driver probe failure
  soc/tegra: pmc: Prevent racing with cpuilde driver
  soc/tegra: bpmp: Remove unused including 
  dt-bindings: soc: ti: pruss: Add dma-coherent property
  soc: ti: Remove pm_runtime_irq_safe() usage for smartreflex
  soc: ti: pruss: Enable support for ICSSG subsystems on K3 AM64x SoCs
  dt-bindings: soc: ti: pruss: Update bindings for K3 AM64x SoCs
  firmware: arm_scmi: Use WARN_ON() to check configured transports
  firmware: arm_scmi: Fix boolconv.cocci warnings
  soc: mediatek: mmsys: Fix missing UFOE component in mt8173 table routing
  soc: mediatek: mmsys: add MT8365 support
  ...

soc/tegra: fuse: Enable fuse clock on suspend for Tegra124

2021-08-11T09:55:56+00:00

The FUSE clock should be enabled during suspend on Tegra124. Currently
clk driver enables it on all SoCs, but FUSE may require a higher core
voltage on Tegra30 while enabled. Move the quirk into the FUSE driver
and make it specific to Tegra124.

Signed-off-by: Dmitry Osipenko 
Signed-off-by: Thierry Reding

soc/tegra: fuse: Add runtime PM support

2021-08-11T09:55:04+00:00

The Tegra FUSE belongs to the core power domain and we're going to enable
GENPD support for the core domain. Now FUSE device must be resumed using
runtime PM API in order to initialize the FUSE power state. Add runtime PM
support to the FUSE driver.

Signed-off-by: Dmitry Osipenko 
Signed-off-by: Thierry Reding

soc/tegra: fuse: Clear fuse->clk on driver probe failure

2021-08-11T09:54:48+00:00

The fuse->clk must be cleared if FUSE driver fails to probe, otherwise
tegra_fuse_readl() will crash. It's unlikely to happen in practice,
nevertheless let's correct it for completeness.

Signed-off-by: Dmitry Osipenko 
Signed-off-by: Thierry Reding