kernel/linux.git/drivers/reset/reset-socfpga.c, branch v6.2

reset: socfpga: add empty driver allowing consumers to probe

2021-10-05T10:23:16+00:00

The early reset driver doesn't ever probe, which causes consuming devices to be unable to probe. Add an empty driver to set this device as available, allowing consumers to probe. Signed-off-by: Paweł Anikiel Link: https://lore.kernel.org/r/20210920124141.1166544-4-pan@semihalf.com Signed-off-by: Philipp Zabel

reset: socfpga: add error handling and release mem-region

2020-12-01T10:37:12+00:00

In case of an error, call release_mem_region when an error happens during allocation of resources. Also add error handling for the case that reset_controller_register fails. Reported-by: kernel test robot Reported-by: Dan Carpenter Signed-off-by: Dinh Nguyen Signed-off-by: Philipp Zabel

reset: Move reset-simple header out of drivers/reset

2020-06-16T12:19:56+00:00

The reset-simple code can be useful for drivers outside of drivers/reset that have a few reset controls as part of their features. Let's move it to include/linux/reset. Reviewed-by: Philipp Zabel Signed-off-by: Maxime Ripard Signed-off-by: Philipp Zabel

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