linux-toradex.git/drivers/reset/reset-socfpga.c, branch v5.1-rc4

reset: socfpga: declare socfpga_reset_init in a header file

2019-01-28T10:16:04+00:00

Avoid declaring extern functions in c files. To make sure function
definition and usage don't get out of sync, declare socfpga_reset_init
in a common header.

Suggested-by: Stephen Rothwell 
Signed-off-by: Philipp Zabel 
Acked-by: Dinh Nguyen

reset: socfpga: add an early reset driver for SoCFPGA

2019-01-07T15:38:50+00:00

Create a separate reset driver that uses the reset operations in
reset-simple. The reset driver for the SoCFPGA platform needs to
register early in order to be able bring online timers that needed
early in the kernel bootup.

We do not need this early reset driver for Stratix10, because on
arm64, Linux does not need the timers are that in reset. Linux is
able to run just fine with the internal armv8 timer. Thus, we use
a new binding "altr,stratix10-rst-mgr" for the Stratix10 platform.
The Stratix10 platform will continue to use the reset-simple platform
driver, while the 32-bit platforms(Cyclone5/Arria5/Arria10) will use
the early reset driver.

Signed-off-by: Dinh Nguyen 
[p.zabel@pengutronix.de: fixed socfpga of_device_id in reset-simple]
Signed-off-by: Philipp Zabel

reset: socfpga: use the reset-simple driver

2017-10-18T13:51:02+00:00

Add reset line status readback, inverted status support, and socfpga
device tree quirks to the simple reset driver, and use it to replace
the socfpga driver.

Signed-off-by: Philipp Zabel

reset: socfpga: fix for 64-bit compilation

2017-10-04T08:29:44+00:00

The SoCFPGA Stratix10 reset controller has 32-bit registers. Thus, we
cannot use BITS_PER_LONG in computing the register and bit offset. Instead,
we should be using the width of the hardware register for the calculation.

Signed-off-by: Dinh Nguyen 
Signed-off-by: Philipp Zabel

regulator: Convert to using %pOF instead of full_name

2017-07-19T10:56:01+00:00

Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.

Signed-off-by: Rob Herring 
Reviewed-by: Krzysztof Kozlowski 
Reviewed-by: Philipp Zabel 
Signed-off-by: Mark Brown

reset-socfpga: Fix nr_resets property

2017-03-08T08:36:45+00:00

The SoC-FPGA reset controller driver defines NR_BANKS as 4 and uses that define
for two unrelated purposes. It is used
1. as an increment for reset line banks which are 32-bit registers with 4-byte
aligned addresses.
2. as the total number of reset line banks which together with the number of
resets per bank (32) limits the total number of useable resets to 128 and the
highest useable reset ID to 127.

This is clearly wrong as there are resets with higher IDs than 127 defined in
include/dt-bindings/reset/altr,rst-mgr.h and altr,rst-mgr-a10.h.

The patch introduces a new define BANK_INCREMENT for calculating the register
addresses as before and increases NR_BANKS to 8 for useable reset IDs up to 255.

Signed-off-by: Rojhalat Ibrahim 
Signed-off-by: Philipp Zabel

reset: socfpga: make it explicitly non-modular

2016-10-24T08:45:27+00:00

The Kconfig currently controlling compilation of this code is:

drivers/reset/Kconfig:config RESET_SOCFPGA
drivers/reset/Kconfig:  bool "SoCFPGA Reset Driver" if COMPILE_TEST
drivers/reset/Kconfig:  default ARCH_SOCFPGA

or

arch/arm/mach-socfpga/Kconfig:menuconfig ARCH_SOCFPGA
arch/arm/mach-socfpga/Kconfig:  bool "Altera SOCFPGA family" if ARCH_MULTI_V7

...meaning that it currently is not being built as a module by anyone.

Lets remove the small amount of modular evidence that remains, so that
when reading the driver there is no doubt it is builtin-only.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.

Cc: Steffen Trumtrar 
Cc: Masahiro Yamada 
Signed-off-by: Paul Gortmaker 
Signed-off-by: Philipp Zabel

reset: socfpga: no need to store modrst_offset

2016-08-08T17:23:32+00:00

Since we can just add it to membase once, there is no need to store
modrst_offset separately, and to repeat the addition with every access.

Signed-off-by: Philipp Zabel 
Tested-by: Dinh Nguyen

reset: socfpga: use devm_reset_controller_register()

2016-05-30T07:37:47+00:00

Use devm_reset_controller_register() for the reset controller
registration and drop the .remove callback.

Signed-off-by: Masahiro Yamada 
Signed-off-by: Philipp Zabel

reset: socfpga: Make reset_control_ops const

2016-02-10T09:53:36+00:00

The socfpga_reset_ops structure is never modified. Make it const.

Signed-off-by: Philipp Zabel