• Min Li's avatar
    ptp: Add a ptp clock driver for IDT 82P33 SMU. · 57a10d8c
    Min Li authored
    The IDT 82P33 Synchronization Management Unit (SMU) family provides
    tools to manage timing references, clock sources and
    timing paths for IEEE 1588 / Precision Time Protocol (PTP) and
    Synchronous Ethernet (SyncE) based clocks. The device supports up
    to three independent timing paths that control: PTP clock synthesis;
    SyncE clock generation; and general purpose frequency translation.
    The device supports physical layer timing with Digital PLLs (DPLLs)
    and it supports packet based timing with Digitally Controlled
    Oscillators (DCOs). This patch adds support for ptp clock based on
    the device.
    
    Changes since v1:
     - As suggested by Richard Cochran:
       1. Replace _mask_bit_count with the existing hweight8
       2. Prefix all functions with idt82p33
       3. Fix white space issues in Kconfig and Makefile
       4. Remove forward declaration
       5. Use adjfine instead of adjfreq for better resolution
    
     - As suggested by David Miller:
       1. Replace CHAN_INIT macro with a static function
          idt82p33_channel_init
       2. Employ reverse christmas tree ordering for local
          variables
       3. Fix indentation problem by appropriate number of
          TAB then SPACE character
    Signed-off-by: default avatarMin Li <min.li.xe@renesas.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    57a10d8c
Makefile 600 Bytes