[v7,0/4] clk: meson: add a sub EMMC clock controller support

Message

Jianxin Pan Nov. 15, 2018, 12:18 p.m. UTC

This driver will add a MMC clock controller driver support.
The original idea about adding a clock controller is during the
discussion in the NAND driver mainline effort[1].

This driver is tested in the S400 board (AXG platform) with NAND driver.

Changes since v6 [7]:
 - add one based support for sclk divier
 - alloc sclk in probe for multiple instance
 - fix coding styles

Changes since v5 [6]:
 - remove divider ops with .init and use sclk_div instead
 - drop CLK_DIVIDER_ROUND_CLOSEST in mux and div
 - drop the useless type cast 

Changes since v4 [5]:
 - use struct parm in phase delay driver
 - remove 0 delay releted part in phase delay driver
 - don't rebuild the parent name once again
 - add divider ops with .init

Changes since v3 [4]:
 - separate clk-phase-delay driver
 - replace clk_get_rate() with clk_hw_get_rate()
 - collect Rob's R-Y
 - drop 'meson-' prefix from compatible string

 Changes since v2 [3]:
 - squash dt-binding clock-id patch
 - update license
 - fix alignment
 - construct a clk register helper() function

Changes since v1 [2]:
 - implement phase clock
 - update compatible name
 - adjust file name
 - divider probe() into small functions, and re-use them

[1] https://lkml.kernel.org/r/20180628090034.0637a062@xps13
[2] https://lkml.kernel.org/r/[e-mail]
[3] https://lkml.kernel.org/r/[e-mail]
[4] https://lkml.kernel.org/r/[e-mail]
[5] https://lkml.kernel.org/r/[e-mail]
[6] https://lkml.kernel.org/r/[e-mail]
[7] https://lkml.kernel.org/r/[e-mail]
Yixun Lan (3):
  clk: meson: add emmc sub clock phase delay driver
  clk: meson: add DT documentation for emmc clock controller
  clk: meson: add sub MMC clock controller driver
  clk: meson: add one based divider support for sclk divider

 .../devicetree/bindings/clock/amlogic,mmc-clkc.txt |  39 +++
 drivers/clk/meson/Kconfig                          |  10 +
 drivers/clk/meson/Makefile                         |   3 +-
 drivers/clk/meson/clk-phase-delay.c                |  64 +++++
 drivers/clk/meson/clkc-audio.h                     |   1 +
 drivers/clk/meson/clkc.h                           |  13 +
 drivers/clk/meson/mmc-clkc.c                       | 313 +++++++++++++++++++++
 drivers/clk/meson/sclk-div.c                       |  28 +-
 include/dt-bindings/clock/amlogic,mmc-clkc.h       |  17 ++
 9 files changed, 477 insertions(+), 11 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt
 create mode 100644 drivers/clk/meson/clk-phase-delay.c
 create mode 100644 drivers/clk/meson/mmc-clkc.c
 create mode 100644 include/dt-bindings/clock/amlogic,mmc-clkc.h

Comments

Jianxin Pan Nov. 29, 2018, 1:48 a.m. UTC | #1

Hi Jerome,

I made some modifications as you suggested， could you please take a look?

On 2018/11/15 20:18, Jianxin Pan wrote:
> This driver will add a MMC clock controller driver support.
> The original idea about adding a clock controller is during the
> discussion in the NAND driver mainline effort[1].
> 
> This driver is tested in the S400 board (AXG platform) with NAND driver.
> 
> Changes since v6 [7]:
>  - add one based support for sclk divier
>  - alloc sclk in probe for multiple instance
>  - fix coding styles
> 
> Changes since v5 [6]:
>  - remove divider ops with .init and use sclk_div instead
>  - drop CLK_DIVIDER_ROUND_CLOSEST in mux and div
>  - drop the useless type cast 
> 
> Changes since v4 [5]:
>  - use struct parm in phase delay driver
>  - remove 0 delay releted part in phase delay driver
>  - don't rebuild the parent name once again
>  - add divider ops with .init
> 
> Changes since v3 [4]:
>  - separate clk-phase-delay driver
>  - replace clk_get_rate() with clk_hw_get_rate()
>  - collect Rob's R-Y
>  - drop 'meson-' prefix from compatible string
> 
>  Changes since v2 [3]:
>  - squash dt-binding clock-id patch
>  - update license
>  - fix alignment
>  - construct a clk register helper() function
> 
> Changes since v1 [2]:
>  - implement phase clock
>  - update compatible name
>  - adjust file name
>  - divider probe() into small functions, and re-use them
> 
> [1] https://lkml.kernel.org/r/20180628090034.0637a062@xps13
> [2] https://lkml.kernel.org/r/[e-mail]
> [3] https://lkml.kernel.org/r/[e-mail]
> [4] https://lkml.kernel.org/r/[e-mail]
> [5] https://lkml.kernel.org/r/[e-mail]
> [6] https://lkml.kernel.org/r/[e-mail]
> [7] https://lkml.kernel.org/r/[e-mail]
> Yixun Lan (3):
>   clk: meson: add emmc sub clock phase delay driver
>   clk: meson: add DT documentation for emmc clock controller
>   clk: meson: add sub MMC clock controller driver
>   clk: meson: add one based divider support for sclk divider
> 
>  .../devicetree/bindings/clock/amlogic,mmc-clkc.txt |  39 +++
>  drivers/clk/meson/Kconfig                          |  10 +
>  drivers/clk/meson/Makefile                         |   3 +-
>  drivers/clk/meson/clk-phase-delay.c                |  64 +++++
>  drivers/clk/meson/clkc-audio.h                     |   1 +
>  drivers/clk/meson/clkc.h                           |  13 +
>  drivers/clk/meson/mmc-clkc.c                       | 313 +++++++++++++++++++++
>  drivers/clk/meson/sclk-div.c                       |  28 +-
>  include/dt-bindings/clock/amlogic,mmc-clkc.h       |  17 ++
>  9 files changed, 477 insertions(+), 11 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt
>  create mode 100644 drivers/clk/meson/clk-phase-delay.c
>  create mode 100644 drivers/clk/meson/mmc-clkc.c
>  create mode 100644 include/dt-bindings/clock/amlogic,mmc-clkc.h
>