1. 20 Jan, 2020 2 commits
  2. 18 Jan, 2020 1 commit
  3. 17 Jan, 2020 1 commit
  4. 16 Jan, 2020 8 commits
  5. 15 Jan, 2020 2 commits
    • Grygorii Strashko's avatar
      soc: ti: k3: add navss ringacc driver · 3277e8aa
      Grygorii Strashko authored
      The Ring Accelerator (RINGACC or RA) provides hardware acceleration to
      enable straightforward passing of work between a producer and a consumer.
      There is one RINGACC module per NAVSS on TI AM65x SoCs.
      
      The RINGACC converts constant-address read and write accesses to equivalent
      read or write accesses to a circular data structure in memory. The RINGACC
      eliminates the need for each DMA controller which needs to access ring
      elements from having to know the current state of the ring (base address,
      current offset). The DMA controller performs a read or write access to a
      specific address range (which maps to the source interface on the RINGACC)
      and the RINGACC replaces the address for the transaction with a new address
      which corresponds to the head or tail element of the ring (head for reads,
      tail for writes). Since the RINGACC maintains the state, multiple DMA
      controllers or channels are allowed to coherently share the same rings as
      applicable. The RINGACC is able to place data which is destined towards
      software into cached memory directly.
      
      Supported ring modes:
      - Ring Mode
      - Messaging Mode
      - Credentials Mode
      - Queue Manager Mode
      
      TI-SCI integration:
      
      Texas Instrument's System Control Interface (TI-SCI) Message Protocol now
      has control over Ringacc module resources management (RM) and Rings
      configuration.
      
      The corresponding support of TI-SCI Ringacc module RM protocol
      introduced as option through DT parameters:
      - ti,sci: phandle on TI-SCI firmware controller DT node
      - ti,sci-dev-id: TI-SCI device identifier as per TI-SCI firmware spec
      
      if both parameters present - Ringacc driver will configure/free/reset Rings
      using TI-SCI Message Ringacc RM Protocol.
      
      The Ringacc driver manages Rings allocation by itself now and requests
      TI-SCI firmware to allocate and configure specific Rings only. It's done
      this way because, Linux driver implements two stage Rings allocation and
      configuration (allocate ring and configure ring) while TI-SCI Message
      Protocol supports only one combined operation (allocate+configure).
      Signed-off-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
      Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
      Reviewed-by: default avatarTero Kristo <t-kristo@ti.com>
      Tested-by: default avatarKeerthy <j-keerthy@ti.com>
      Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@oracle.com>
      3277e8aa
    • Grygorii Strashko's avatar
      bindings: soc: ti: add documentation for k3 ringacc · 59be028f
      Grygorii Strashko authored
      The Ring Accelerator (RINGACC or RA) provides hardware acceleration to
      enable straightforward passing of work between a producer and a consumer.
      There is one RINGACC module per NAVSS on TI AM65x and j721e.
      
      This patch introduces RINGACC device tree bindings.
      Signed-off-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
      Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
      Reviewed-by: default avatarRob Herring <robh@kernel.org>
      Tested-by: default avatarKeerthy <j-keerthy@ti.com>
      Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@oracle.com>
      59be028f
  6. 11 Jan, 2020 3 commits
  7. 10 Jan, 2020 11 commits
  8. 09 Jan, 2020 12 commits