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| author |   Murali Karicheri <m-karicheri2@ti.com> | 2018-04-17 17:30:30 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-04-18 21:00:56 -0400 |
| commit | 350601b4f7ab45a3ef39575acc21d6b7a69f724b (patch) | |
| tree | 308423da4ac70433c6a34a6288d3571a71c4ca7b /Documentation/devicetree | |
| parent | Merge branch 'ipv6-Separate-data-structures-for-FIB-and-data-path' (diff) | |
| download | linux-dev-350601b4f7ab45a3ef39575acc21d6b7a69f724b.tar.xz linux-dev-350601b4f7ab45a3ef39575acc21d6b7a69f724b.zip | |
soc: ti: K2G: enhancement to support QMSS in K2G NAVSS
Navigator Subsystem (NAVSS) available on K2G SoC has a cut down
version of QMSS with less number of queues, internal linking ram
with lesser number of buffers etc. It doesn't have status and
explicit push register space as in QMSS available on other K2 SoCs.
So define reg indices specific to QMSS on K2G. This patch introduces
"ti,66ak2g-navss-qm" compatibility to identify QMSS on K2G NAVSS
and to customize the dts handling code. Per Device manual,
descriptors with index less than or equal to regions0_size is in region 0
in the case of K2 QMSS where as for QMSS on K2G, descriptors with index
less than regions0_size is in region 0. So update the size accordingly in
the regions0_size bits of the linking ram size 0 register.
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt b/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt index 77cd42cc5f54..b025770eeb92 100644 --- a/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt +++ b/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt @@ -17,7 +17,8 @@ pool management. Required properties: -- compatible : Must be "ti,keystone-navigator-qmss"; +- compatible : Must be "ti,keystone-navigator-qmss". + : Must be "ti,66ak2g-navss-qm" for QMSS on K2G SoC. - clocks : phandle to the reference clock for this device. - queue-range : <start number> total range of queue numbers for the device. - linkram0 : <address size> for internal link ram, where size is the total @@ -39,6 +40,12 @@ Required properties: - Descriptor memory setup region. - Queue Management/Queue Proxy region for queue Push. - Queue Management/Queue Proxy region for queue Pop. + +For QMSS on K2G SoC, following QM reg indexes are used in that order + - Queue Peek region. + - Queue configuration region. + - Queue Management/Queue Proxy region for queue Push/Pop. + - queue-pools : child node classifying the queue ranges into pools. Queue ranges are grouped into 3 type of pools: - qpend : pool of qpend(interruptible) queues |