diff options
| author | Dhaval Patel <pdhaval@codeaurora.org> | 2014-09-05 14:56:10 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:35:24 -0700 |
| commit | 2eae06948f4d3989ea4c7062fdccca014bd6eecb (patch) | |
| tree | f48a56b1d5848bfdd069bab37e3b61293895bc23 /Documentation | |
| parent | 50290a21e510dd3ff0c0d60ee757c306fee81e19 (diff) | |
msm: mdss: request ab/ib quota based on rt and nrt client
Non-RealTime(NRT) memory fetch should use NRT AXI
ports while RT usecase memory fetch should go through
RT AXI ports. Number of RT and NRT AXI ports can be
different from chipset to chipset. MDSS driver hardcodes
them to "2" for all usecases which won't apply for
all MDP cores Ex: MDPv17. This change removes AXI ports
hard coding and updates ab/ib request based on AXI
ports availability for respective chipset. It uses
uniform calculation method for ib/ab quota request on
RT and NRT AXI ports to reduce the driver complexity
and clean interface.
Change-Id: I015c5c8a64bdf62f5747fcbcf19ba00cd29e21b5
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/fb/mdss-mdp.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/fb/mdss-mdp.txt b/Documentation/devicetree/bindings/fb/mdss-mdp.txt index 4b3268bc8f47..f7b2ffb4a396 100644 --- a/Documentation/devicetree/bindings/fb/mdss-mdp.txt +++ b/Documentation/devicetree/bindings/fb/mdss-mdp.txt @@ -169,6 +169,7 @@ Bus Scaling Data: src values allowed for MDSS are: 22 = MSM_BUS_MASTER_MDP_PORT0 23 = MSM_BUS_MASTER_MDP_PORT1 + 25 = MSM_BUS_MASTER_ROTATOR dst values allowed for MDSS are: 512 = MSM_BUS_SLAVE_EBI_CH0 ab: Represents aggregated bandwidth. @@ -180,6 +181,8 @@ Bus Scaling Data: ab and ib values defined here are random and bare no logic except for the use-case 0 where ab and ib values needs to be 0. + * Define realtime vector properties followed by + non-realtime vector properties. - qcom,mdss-prefill-outstanding-buffer-bytes: The size of mdp outstanding buffer in bytes. The buffer is filled during prefill @@ -259,6 +262,13 @@ Optional properties: increased performance by prioritizing the real time (rt) traffic over non real time (nrt) traffic to access the memory. +- qcom,mdss-num-nrt-paths: Integer property represents the number of non-realtime + paths in each Bus Scaling Usecase. This value depends on + number of AXI ports are dedicated to non-realtime VBIF for + particular chipset. This property is mandatory when + "qcom,mdss-has-fixed-qos-arbiter-enabled" is enabled. + These paths must be defined after rt-paths in + "qcom,msm-bus,vectors-KBps" vector request. - qcom,mdss-has-source-split: Boolean property to indicate if source split feature is available or not. - qcom,mdss-has-rotator-downscale: Boolean property to indicate if rotator @@ -487,6 +497,7 @@ Example: qcom,msm-bus,num-cases = <3>; qcom,msm-bus,num-paths = <2>; qcom,mdss-dram-channels = <2>; + qcom,mdss-num-nrt-paths = <1>; qcom,msm-bus,vectors-KBps = <22 512 0 0>, <23 512 0 0>, <22 512 0 6400000>, <23 512 0 6400000>, |