Hi,

On Sat, Jan 28, 2017 at 08:22:29PM +0800, Chen-Yu Tsai wrote:

Hi everyone,

This is v2 of my A80 CCU clk patches. Changes since v1:

  - Use pre-divider adjusted parent rate for rounding.

  - Use else statement for the case where the PLL lock status bit is
    in same register.

  - Add a more detailed description of the main CCU and DE CCU to the
    commit messages.

  - Fix DE CCU compatible string in DT binding example.

  - Fix incorrectly squashed patch hunk.

  - Drop leading zeros from device tree node name in DT examples.

  - Expanded commit message for "ARM: dts: sun8i-a23-q8-tablet: Drop
    pinmux setting for codec PA gpio".

This series adds new "sunxi-ng" style drivers for the CCUs found in the
Allwinner A80 SoC. The A80 contains 1 main clock control unit, and some
subsystem specific clock control units at separate addresses. These
include the USB, display engine, and MMC.

  - The MMC clocks can be supported by the old clock drivers,
    hence here we do not add a new driver for it.

  - The old USB clock driver is intertwined with other SoCs,
    requires old style bindings with clock-output-names and
    CLK_OF_DECLARE for its parents. It is easier to switch
    to a new binding and driver.

  - The display engine (DE) CCU was not supported in the past.

The A80 CCU also has some quirks about its design. It has

  - Separate registers for PLL lock status

  - P1, P2 dividers, which are power-of-2 and only 1 bit wide

The first 3 patches fix and extend the behavior of sunxi-ng's
mux clock type, based on the behavior of the clk subsystem's
basic mux clock.

The fourth patch adds support for checking PLL lock status
bits in separate registers, as opposed to within the PLL's
config register.

Patches 5 through 7 add drivers for the CCU blocks.

Patch 8 and 9 do some cleanup of the sunxi/allwinner dts files
prior to switching sun9i dts to the new sunxi-ng clock bindings.
These are independent of the clk stuff, but touch the same lines
for sun9i. Including them should make it easier to apply and test
patches.

Patch 10 has sun9i switch over to the new clock bindings.

Please take a look and let me know what you think.

This is a bit late, but I took it in anyway.

Note that I only applied the patches about the CCU. The pinctrl header
stuff is quite conflict heavy, and not really a big deal anyway.

(and I really would have liked to have it as a separate series. This
has nothing to do with the A80 CCU).

Thanks,
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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