[U-Boot] [PATCH v4 4/8] dm: Expand the uclass for Platform Controller Hubs (PCH)

[Bin Meng]

On Sun, Jan 17, 2016 at 7:44 AM, Simon Glass <sjg at chromium.org> wrote:
> A Platform Controller Hub is an Intel concept - it is like the peripherals
> on an SoC and is often in a separate chip from the CPU. The chip is typically
> found on the first PCI bus and integrates multiple devices.
>
> We have a very simple uclass to support PCHs. Add a few operations, such as
> setting up the devices on the PCH and finding the SPI controller base
> address. Also move it into drivers/pch/ since we will be adding a few PCH
> drivers.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v4:
> - Return -ENOSYS if the version is unknown
>
> Changes in v3:
> - Add a PCH method to enable/disable SPI flash protection
> - Drop the pch_init() call
>
> Changes in v2:
> - Update the commit message and header file comments
> - Use an enum for the PCH version
> - Replace SBASE with SPI base
> - Add a TODO to check if the init() method can be removed later
>
>  arch/x86/lib/Makefile                      |  1 -
>  drivers/Makefile                           |  1 +
>  drivers/pch/Makefile                       |  5 ++
>  {arch/x86/lib => drivers/pch}/pch-uclass.c | 32 +++++++++++++
>  include/pch.h                              | 74 ++++++++++++++++++++++++++++++
>  5 files changed, 112 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/pch/Makefile
>  rename {arch/x86/lib => drivers/pch}/pch-uclass.c (50%)
>  create mode 100644 include/pch.h
>

Reviewed-by: Bin Meng <bmeng.cn at gmail.com>