[U-Boot] [PATCH V2] Add a mailbox driver framework/uclass

[Simon Glass]

On 14 May 2016 at 13:33, Simon Glass <sjg at chromium.org> wrote:
> On 13 May 2016 at 15:50, Stephen Warren <swarren at wwwdotorg.org> wrote:
>> From: Stephen Warren <swarren at nvidia.com>
>>
>> A mailbox is a hardware mechanism for transferring small message and/or
>> notifications between the CPU on which U-Boot runs and some other device
>> such as an auxilliary CPU running firmware or a hardware module.
>>
>> This patch defines a standard API that connects mailbox clients to mailbox
>> providers (drivers). Initially, DT is the only supported method for
>> connecting the two.
>>
>> The DT binding specification (mailbox.txt) was taken from Linux kernel
>> v4.5's Documentation/devicetree/bindings/mailbox/mailbox.txt.
>>
>> Signed-off-by: Stephen Warren <swarren at nvidia.com>
>> ---
>> v2:
>> * Use timer_get_us() rather than get_ticks() and conversion code.
>> * Explicitly mention that mailbox messages are fixed size.
>> * Spell out IPC.
>> * Fix typos.
>>
>> I'll send a sandbox test for this as a separate patch.
>>
>>  doc/device-tree-bindings/mailbox/mailbox.txt |  32 ++++++
>>  drivers/Kconfig                              |   2 +
>>  drivers/Makefile                             |   1 +
>>  drivers/mailbox/Kconfig                      |  13 +++
>>  drivers/mailbox/Makefile                     |   5 +
>>  drivers/mailbox/mailbox-uclass.c             | 145 ++++++++++++++++++++++++++
>>  include/dm/uclass-id.h                       |   1 +
>>  include/mailbox_client.h                     | 149 +++++++++++++++++++++++++++
>>  include/mailbox_uclass.h                     |  83 +++++++++++++++
>>  9 files changed, 431 insertions(+)
>>  create mode 100644 doc/device-tree-bindings/mailbox/mailbox.txt
>>  create mode 100644 drivers/mailbox/Kconfig
>>  create mode 100644 drivers/mailbox/Makefile
>>  create mode 100644 drivers/mailbox/mailbox-uclass.c
>>  create mode 100644 include/mailbox_client.h
>>  create mode 100644 include/mailbox_uclass.h
>
> Acked-by: Simon Glass <sjg at chromium.org>

Applied to u-boot-dm, thanks!