On 10/13/2015 10:42 AM, Rob Herring wrote:
On Mon, Oct 12, 2015 at 2:46 PM, Murali Karicheri <m-karicheri2@xxxxxx> wrote:
Currently the DT bindings have details about the driver as well. This
patch moves this to a separate document for knav qmss driver so that
driver detail update can be done as needed without polluting the DT
bindings description.
Signed-off-by: Murali Karicheri <m-karicheri2@xxxxxx>
---
Documentation/arm/keystone/knav-qmss.txt | 24 ++++++++++++++++++++++
.../bindings/soc/ti/keystone-navigator-qmss.txt | 20 ++++--------------
2 files changed, 28 insertions(+), 16 deletions(-)
create mode 100644 Documentation/arm/keystone/knav-qmss.txt
diff --git a/Documentation/arm/keystone/knav-qmss.txt b/Documentation/arm/keystone/knav-qmss.txt
new file mode 100644
index 0000000..79946d1
--- /dev/null
+++ b/Documentation/arm/keystone/knav-qmss.txt
@@ -0,0 +1,24 @@
+* Texas Instruments Keystone Navigator Queue Management SubSystem driver
+
+Driver source code path
+ drivers/soc/ti/knav_qmss.c
+ drivers/soc/ti/knav_qmss_acc.c
+
+The QMSS (Queue Manager Sub System) found on Keystone SOCs is one of
+the main hardware sub system which forms the backbone of the Keystone
+multi-core Navigator. QMSS consist of queue managers, packed-data structure
+processors(PDSP), linking RAM, descriptor pools and infrastructure
+Packet DMA.
+The Queue Manager is a hardware module that is responsible for accelerating
+management of the packet queues. Packets are queued/de-queued by writing or
+reading descriptor address to a particular memory mapped location. The PDSPs
+perform QMSS related functions like accumulation, QoS, or event management.
+Linking RAM registers are used to link the descriptors which are stored in
+descriptor RAM. Descriptor RAM is configurable as internal or external memory.
+The QMSS driver manages the PDSP setups, linking RAM regions,
+queue pool management (allocation, push, pop and notify) and descriptor
+pool management.
+
+knav qmss driver provides a set of APIs to drivers to open/close qmss queues,
+allocate descriptor pools, map the descriptors, push/pop to queues etc. For
+details of the available APIs, please refers to include/linux/soc/ti/knav_qmss.h
diff --git a/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt b/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt
index d8e8cdb..2cecea1 100644
--- a/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt
+++ b/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt
@@ -1,20 +1,8 @@
-* Texas Instruments Keystone Navigator Queue Management SubSystem driver
-
-The QMSS (Queue Manager Sub System) found on Keystone SOCs is one of
-the main hardware sub system which forms the backbone of the Keystone
-multi-core Navigator. QMSS consist of queue managers, packed-data structure
-processors(PDSP), linking RAM, descriptor pools and infrastructure
-Packet DMA.
-The Queue Manager is a hardware module that is responsible for accelerating
-management of the packet queues. Packets are queued/de-queued by writing or
-reading descriptor address to a particular memory mapped location. The PDSPs
-perform QMSS related functions like accumulation, QoS, or event management.
-Linking RAM registers are used to link the descriptors which are stored in
-descriptor RAM. Descriptor RAM is configurable as internal or external memory.
-The QMSS driver manages the PDSP setups, linking RAM regions,
-queue pool management (allocation, push, pop and notify) and descriptor
-pool management.
Only the last sentence seems to be about the driver and is rather
obvious (a driver manages the h/w). I would leave all this as-is
currently.
Rob
Rob,
I am taking the liberty to add your Ack based on the above. I can remove
it if you disagree.
Murali
+* Texas Instruments Keystone Navigator (knav) Queue Management SubSystem driver
+ DT bindings
+For details of the driver, please refer to
+Documentation/arm/keystone/knav-qmss.txt
Required properties:
- compatible : Must be "ti,keystone-navigator-qmss";
--
1.9.1
--
Murali Karicheri
Linux Kernel, Keystone
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