[PATCH 0/4] stm32mp: add minimal RCC support for STM32MP13

[Patrick Delaunay <patrick.delaunay@foss.st.com>]

Add a minimal support for STM32MP13 RCC, the reset and clock controller
- update of the RCC MISC driver to bind the correct clock and reset driver
- reset driver, same than STM32MP15x = drivers/reset/stm32-reset.c
- clock driver, add a empty driver for STM32MP13x =
  drivers/clk/stm32/clk-stm32mp13.c
- Add RCC node in SOC device tree with u-boot,dm-pre-reloc property

This serie is only a preliminary step for STM32MP13 clock and reset support
in U-Boot, based on Linux kernel binding introduced by [1] and it prepares
the next device tree alignment with Linux kernel.

The functional STMP13 clock driver based on CCF and on SCMI clocks
provided by OP-TEE and the clock and reset references in SOC device tree
will be pushed when the associated patches in [1] will be accepted.

[1] Introduction of STM32MP13 RCC driver (Reset Clock Controller)
    https://lore.kernel.org/linux-arm-kernel/20220316131000.9874-1-gabriel.fernandez@foss.st.com/



Patrick Delaunay (4):
  clk: Add directory for STM32 clock drivers
  clk: stm32mp13: add a STM32MP13 RCC clock driver
  misc: stm32mp13: introduce STM32MP13 RCC driver
  ARM: dts: stm32: add rcc node for STM32MP13

 MAINTAINERS                            |  2 +-
 arch/arm/dts/stm32mp13-u-boot.dtsi     |  4 ++++
 arch/arm/dts/stm32mp131.dtsi           |  7 ++++++
 drivers/clk/Kconfig                    | 17 +-------------
 drivers/clk/Makefile                   |  5 ++---
 drivers/clk/stm32/Kconfig              | 31 ++++++++++++++++++++++++++
 drivers/clk/stm32/Makefile             |  8 +++++++
 drivers/clk/stm32/clk-stm32mp13.c      | 21 +++++++++++++++++
 drivers/clk/{ => stm32}/clk_stm32f.c   |  0
 drivers/clk/{ => stm32}/clk_stm32h7.c  |  0
 drivers/clk/{ => stm32}/clk_stm32mp1.c |  0
 drivers/misc/stm32_rcc.c               |  6 +++++
 12 files changed, 81 insertions(+), 20 deletions(-)
 create mode 100644 drivers/clk/stm32/Kconfig
 create mode 100644 drivers/clk/stm32/Makefile
 create mode 100644 drivers/clk/stm32/clk-stm32mp13.c
 rename drivers/clk/{ => stm32}/clk_stm32f.c (100%)
 rename drivers/clk/{ => stm32}/clk_stm32h7.c (100%)
 rename drivers/clk/{ => stm32}/clk_stm32mp1.c (100%)

-- 
2.25.1