linux-dev/drivers/clk/keystone, branch master

treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_320.RULE

2022-06-10T12:51:36Z

Based on the normalized pattern: this program is free software you can redistribute it and/or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed as is without any warranty of any kind whether express or implied without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference. Reviewed-by: Allison Randal Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

clk: keystone: syscon-clk: Add support for AM62 epwm-tbclk

2022-04-23T02:04:47Z

AM62 has 3 instances of EPWM modules. Each EPWM module has an EPWM TBCLKEN module input used to individually enable or disable its EPWM time-base clock. The EPWM time-base clock enable input comes from the CTRLMMR_EPWM_TB_CLKEN register bits 0 to 2 in CTRL_MMR0 module (6.1.1.4.1.48 [1]). This is virtually the same setup as in AM64 but with 3 instead of 9 clock providers on AM62. Update the driver with the 3 instances of clocks associated to a new compatible: "ti,am62-epwm-tbclk". [1] https://www.ti.com/lit/pdf/spruiv7 Signed-off-by: Georgi Vlaev Tested-by: Vignesh Raghavendra Link: https://lore.kernel.org/r/20220415190343.6284-3-g-vlaev@ti.com Reviewed-by: Nishanth Menon Signed-off-by: Stephen Boyd

clk: keystone: syscon-clk: Add support for AM64 specific epwm-tbclk

2021-06-22T21:18:26Z

AM64 has 9 instances of EPWM modules. And each instance has a clk to Timer-Base sub-module that can be controlled by Control module. Update the driver with all the 9 instance of clocks associated to ti,am64-epwm-tbclk. Signed-off-by: Lokesh Vutla Link: https://lore.kernel.org/r/20210528045743.16537-3-lokeshvutla@ti.com Reviewed-by: Tero Kristo Signed-off-by: Stephen Boyd

treewide: Change list_sort to use const pointers

2021-04-08T23:04:22Z

list_sort() internally casts the comparison function passed to it to a different type with constant struct list_head pointers, and uses this pointer to call the functions, which trips indirect call Control-Flow Integrity (CFI) checking. Instead of removing the consts, this change defines the list_cmp_func_t type and changes the comparison function types of all list_sort() callers to use const pointers, thus avoiding type mismatches. Suggested-by: Nick Desaulniers Signed-off-by: Sami Tolvanen Reviewed-by: Nick Desaulniers Reviewed-by: Christoph Hellwig Reviewed-by: Kees Cook Tested-by: Nick Desaulniers Tested-by: Nathan Chancellor Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/20210408182843.1754385-10-samitolvanen@google.com

clk: keystone: sci-clk: add 10% slack to set_rate

2020-09-22T19:58:52Z

Currently, we request exact clock rates from the firmware to be set with set_rate. Due to some rounding errors and internal functionality of the firmware itself, this can fail. Thus, add some slack to the set_rate functionality so that we are always guaranteed to pass. The firmware always attempts to use frequency as close to the target freq as possible despite the slack given here. Signed-off-by: Tero Kristo Link: https://lore.kernel.org/r/20200907085740.1083-4-t-kristo@ti.com Acked-by: Santosh Shilimkar Signed-off-by: Stephen Boyd

clk: keystone: sci-clk: cache results of last query rate operation

2020-09-22T19:58:43Z

Cache results of the latest query rate operation. This optimizes the firmware interface a bit, avoiding unnecessary calls to firmware if we know the result already; the firmware interface is pretty expensive to use for query rate functionality. Signed-off-by: Tero Kristo Link: https://lore.kernel.org/r/20200907085740.1083-3-t-kristo@ti.com Acked-by: Santosh Shilimkar Signed-off-by: Stephen Boyd

clk: keystone: sci-clk: fix parsing assigned-clock data during probe

2020-09-22T19:58:34Z

The DT clock probe loop incorrectly terminates after processing "clocks" only, fix this by re-starting the loop when all entries for current DT property have been parsed. Fixes: 8e48b33f9def ("clk: keystone: sci-clk: probe clocks from DT instead of firmware") Reported-by: Peter Ujfalusi Signed-off-by: Tero Kristo Link: https://lore.kernel.org/r/20200907085740.1083-2-t-kristo@ti.com Acked-by: Santosh Shilimkar Signed-off-by: Stephen Boyd

Replace HTTP links with HTTPS ones: Common CLK framework

2020-07-11T00:15:34Z

Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov Link: https://lore.kernel.org/r/20200703175114.15027-1-grandmaster@al2klimov.de Signed-off-by: Stephen Boyd

treewide: replace '---help---' in Kconfig files with 'help'

2020-06-13T16:57:21Z

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada

clk: keystone: Add new driver to handle syscon based clocks

2020-03-21T00:07:21Z

On TI's AM654/J721e SoCs, certain clocks can be gated/ungated by setting a single bit in SoC's System Control Module registers. Sometime more than one clock control can be in the same register. Add a driver to support such clocks using syscon framework. Driver currently supports controlling EHRPWM's TimeBase clock(TBCLK) for AM654 SoC. Signed-off-by: Vignesh Raghavendra Link: https://lkml.kernel.org/r/20200227053529.16479-3-vigneshr@ti.com Signed-off-by: Stephen Boyd