[U-Boot] [PATCH v2 00/10] clk: imx: Add i.MX6 CLK support

[Jagan Teki <jagan@amarulasolutions.com>]

This is revised version of previous i.MX6 clock management [1]. 

The main difference between previous version is
- Group the i.MX6 ccm clocks into gates and tree instead of handling the 
  clocks in simple way using case statement.
- use gate clocks for enable/disable management.
- use tree clocks for get/set rate or parent traverse management.
- parent clock handling via clock type.
- traverse the parent clock using recursive functionlaity.

The main motive behind this tree framework is to make the clock tree 
management simple and useful for U-Boot requirements instead of garbing 
Linux clock management code.

We are trying to manage the Allwinner clocks with similar kind, so having 
this would really help i.MX6 as well.

Added simple names for clock macros, but will update it in future
version.

I have skipped ENET clocks from previous series, will add it in future
patches.

Changes for v2:
- changed framework patches.
- add support for imx6qdl and imx6ul boards
- add clock gates, tree.

[1] https://patchwork.ozlabs.org/cover/950964/

Any inputs?
Jagan.

Jagan Teki (10):
  clk: imx: Kconfig: Make CONFIG_CLK available for selection
  clk: imx: Add i.MX6Q clock driver
  clk: imx: Add i.MX6UL clock driver
  clk: Add clk_div_mask helper
  clk: imx: Add imx6q clock tree support
  clk: imx6: Add imx6ul clock tree support
  ARM: dts: i.MX6QDL: Add u-boot,dm-spl for clks
  ARM: dts: i.MX6UL: Add u-boot,dm-spl for clks
  configs: icore_mipi: Enable CLK
  ARM: imx6: Enable CLK for Engicam i.MX6UL boards

 arch/arm/dts/imx6qdl-u-boot.dtsi      |   4 +
 arch/arm/dts/imx6ul-u-boot.dtsi       |   4 +
 arch/arm/include/asm/arch-mx6/clock.h | 109 ++++++++++++++++
 arch/arm/mach-imx/mx6/Kconfig         |   2 +
 configs/imx6qdl_icore_mipi_defconfig  |   2 +
 configs/imx8qxp_mek_defconfig         |   2 +-
 drivers/clk/imx/Kconfig               |  29 ++++-
 drivers/clk/imx/Makefile              |   6 +
 drivers/clk/imx/clk-imx6-common.c     | 172 ++++++++++++++++++++++++++
 drivers/clk/imx/clk-imx6q.c           | 109 ++++++++++++++++
 drivers/clk/imx/clk-imx6ul.c          |  85 +++++++++++++
 include/clk-uclass.h                  |   2 +
 12 files changed, 523 insertions(+), 3 deletions(-)
 create mode 100644 drivers/clk/imx/clk-imx6-common.c
 create mode 100644 drivers/clk/imx/clk-imx6q.c
 create mode 100644 drivers/clk/imx/clk-imx6ul.c

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