kernel/linux.git/include/linux/clk/ti.h, branch v6.12.80

clk: ti: Improve clksel clock bit parsing for reg property

2024-02-26T11:08:45+00:00

Because of legacy reasons, the TI clksel composite clocks can have overlapping reg properties, and use a custom ti,bit-shift property. For the clksel clocks we can start using of the standard reg property instead of the custom ti,bit-shift property. To do this, let's add a ti_clk_get_legacy_bit_shift() helper, and make ti_clk_get_reg_addr() populate the clock bit offset. This makes it possible to update the devicetree files to use the reg property one clock at a time. Acked-by: Stephen Boyd Signed-off-by: Tony Lindgren

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

2022-06-10T12:51:36+00:00

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: ti: add am33xx/am43xx spread spectrum clock support

2021-06-09T00:49:16+00:00

The patch enables spread spectrum clocking (SSC) for MPU and LCD PLLs. As reported by the TI spruh73x/spruhl7x RM, SSC is only supported for the DISP/LCD and MPU PLLs on am33xx/am43xx. SSC is not supported for DDR, PER, and CORE PLLs. Calculating the required values and setting the registers accordingly was taken from the set_mpu_spreadspectrum routine contained in the arch/arm/mach-omap2/am33xx/clock_am33xx.c file of the u-boot project. In locked condition, DPLL output clock = CLKINP *[M/N]. In case of SSC enabled, the reference manual explains that there is a restriction of range of M values. Since the omap2_dpll_round_rate routine attempts to select the minimum possible N, the value of M obtained is not guaranteed to be within the range required. With the new "ti,min-div" parameter it is possible to increase N and consequently M to satisfy the constraint imposed by SSC. Signed-off-by: Dario Binacchi Reviewed-by: Tero Kristo Link: https://lore.kernel.org/r/20210606202253.31649-6-dariobin@libero.it Signed-off-by: Stephen Boyd

clk: ti: clkctrl: add new exported API for checking standby info

2019-10-31T13:18:28+00:00

Standby status is provided for certain clkctrl clocks to see if the given module has entered standby or not. This is mostly needed by remoteproc code to see if the remoteproc has entered standby and the clock can be turned off safely. Signed-off-by: Tero Kristo

clk: ti: clkctrl: convert to use bit helper macros instead of bitops

2019-10-31T13:18:28+00:00

This improves the readibility of the code slightly, and makes modifying the flags bit simpler. Signed-off-by: Tero Kristo

clk: ti: dra7: disable the RNG and TIMER12 clkctrl clocks on HS devices

2019-04-25T17:51:36+00:00

RNG and TIMER12 are reserved for secure side usage only on HS devices, so disable their clkctrl clocks on HS SoCs also. Signed-off-by: Tero Kristo Tested-by: Andrew F. Davis Signed-off-by: Stephen Boyd

clk: ti: export the omap2_clk_is_hw_omap call

2019-04-25T17:51:12+00:00

There is one instance outside the TI clock driver that needs the info whether a clock is an OMAP HW clock or not. Thus, move the function declaration into the public header. Signed-off-by: Tero Kristo Signed-off-by: Stephen Boyd

clk: ti: add a usecount for autoidle

2019-02-15T14:47:55+00:00

Multiple users might deny autoidle on a clock. So we should have some counting here, also according to the comment in _setup_iclk_autoidle(). Also setting autoidle regs is not atomic, so there is another reason for locking. Signed-off-by: Andreas Kemnade Acked-by: Tony Lindgren Tested-by: Keerthy Signed-off-by: Tero Kristo

clk: ti: Add functions to save/restore clk context

2018-10-03T12:29:19+00:00

SoCs like AM43XX lose clock registers context during RTC-only suspend. Hence add functions to save/restore the clock registers context. Signed-off-by: Keerthy Signed-off-by: Russ Dill Acked-by: Tony Lindgren Signed-off-by: Tero Kristo

clk: ti: clkctrl: support multiple clkctrl nodes under a cm node

2018-10-03T12:02:26+00:00

Currently, only one clkctrl node can be added under a specific CM node due to limitation with the implementation. Modify the code to pick-up clockdomain name from the clkctrl node instead of CM node if provided. Also, add a new flag to the TI clock driver so that both modes can be supported simultaneously. Signed-off-by: Tero Kristo Tested-by: Tony Lindgren