bcm63xx/atf/drivers/st/clk, branch master

stm32mp1: use a common function to check spinlock is available

2019-09-02T15:51:57Z

To use spinlocks, MMU should be enabled, as well as data cache. A common function is created (moved from clock file). It is then used whenever a spinlock has to be taken, in BSEC and clock drivers. Change-Id: I94baed0114a2061ad71bd5287a91bf7f1c6821f6 Signed-off-by: Yann Gautier

clk: stm32mp: enable RTCAPB clock for dual-core chips

2019-09-02T15:51:30Z

In order to correctly manage the bring-up of non boot CPUs, the RTCAPB clock needs to be enabled. It controls the access to backup registers, where the CPU entrypoint will be stored. Change-Id: Ifeeceb4faf64bc9e0778030444f437cc0bb27272 Signed-off-by: Yann Gautier Signed-off-by: Etienne Carriere Signed-off-by: Nicolas Le Bayon

stm32mp1: add general SYSCFG management

2019-06-17T12:03:51Z

The system configuration controller is mainly used to manage the compensation cell and other IOs and system related settings. The SYSCFG driver is in charge of configuring masters on the interconnect, IO compensation, low voltage boards, or pull-ups for boot pins. All other configurations should be handled in Linux drivers requiring it. Device tree files are also updated to manage vdd-supply regulator. Change-Id: I10fb513761a7d1f2b7afedca9c723ad9d1bccf42 Signed-off-by: Nicolas Le Bayon Signed-off-by: Yann Gautier

clk: stm32mp1: correctly handle Clock Spreading Generator

2019-06-17T12:03:51Z

To activate the CSG option, the driver needs to set the bit2 of PLLNCR register = SSCG_CTRL: Spread Spectrum Clock Generator. This bit should not be cleared when starting the PLL. Change-Id: Ie5c720ff03655f27a7e7e9e7ccf8295dd046112f Signed-off-by: Patrick Delaunay Signed-off-by: Yann Gautier

clk: stm32mp1: use defines for mask values in stm32mp1_clk_sel array

2019-06-17T12:03:51Z

Rework the macro that eases the table definition: the src and msk fields are now using MASK and SHIFT defines of each source register. Some macros had then to be modified: _USART1_SEL, _ASS_SEL and _MSS_SEL to _UART1_SEL, _AXIS_SEL, and _MCUS_SEL to match register fields. Note: the mask for RCC_ASSCKSELR_AXISSRC is changed from 0x3 to 0x7 to reflect the size of the register field, even if there are only 3 possible clock sources. The mask value is also corrected for QSPI and FMC clock selection. Change-Id: I44114e3c1dd37b9fa1be1ba519611abd9a07764c Signed-off-by: Yann Gautier Signed-off-by: Etienne Carriere

clk: stm32mp1: move oscillator functions to generic file

2019-06-17T12:03:51Z

Those functions are generic for parsing nodes from device tree hence could be located in generic source file. The oscillators description structure is also moved to STM32MP1 clock driver, as it is no more used in stm32mp1_clkfunc and cannot be in a generic file. Change-Id: I93ba74f4eea916440fef9b160d306af1b39f17c6 Signed-off-by: Yann Gautier

arch: add some defines for generic timer registers

2019-06-17T12:03:16Z

Those defines are used in STM32MP1 clock driver. It is better to put them altogether with already defined registers. Change-Id: I6f8ad8c2477b947af6f76283a4ef5c40212d0027 Signed-off-by: Yann Gautier

stm32mp1: add minimal support for co-processor Cortex-M4

2019-02-20T16:34:21Z

STM32MP1 chip embeds a dual Cortex-A7 and a Cortex-M4. The support for Cortex-M4 clocks is added when configuring the clock tree. Some minimal security features to allow communications between A7 and M4 are also added. Change-Id: I60417e244a476f60a2758f4969700b2684056665 Signed-off-by: Yann Gautier

stm32mp1: update clock driver

2019-02-14T10:20:23Z

Remove useless private structure in function prototypes. Add a reference counter on clocks. Prepare for future secured/shared/non-secured clocks. Change-Id: I3dbed81721da5ceff5e10b2c4155b1e340c036ee Signed-off-by: Yann Gautier Signed-off-by: Etienne Carriere Signed-off-by: Lionel Debieve Signed-off-by: Nicolas LE BAYON

stm32mp1: split clkfunc code

2019-02-14T10:20:23Z

Create a new file stm32mp_clkfunc.c to put functions that could be common between several platforms. Change-Id: Ica915c796b162b2345056b33328acc05035a242c Signed-off-by: Yann Gautier