diff mbox series

[v8,08/34] dt-bindings: host1x: Document OPP and power domain properties

Message ID 20210817012754.8710-9-digetx@gmail.com (mailing list archive)
State New, archived
Headers show
Series NVIDIA Tegra power management patches for 5.16 | expand

Commit Message

Dmitry Osipenko Aug. 17, 2021, 1:27 a.m. UTC 
Document new DVFS OPP table and power domain properties of the Host1x bus
and devices sitting on the bus.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 .../display/tegra/nvidia,tegra20-host1x.txt   | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
index 8a6d3e1ee306..62861a8fb5c6 100644
--- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
@@ -20,6 +20,18 @@  Required properties:
 - reset-names: Must include the following entries:
   - host1x
 
+Optional properties:
+- operating-points-v2: See ../bindings/opp/opp.txt for details.
+  - power-domains: Phandle to HEG or core power domain.
+
+For each opp entry in 'operating-points-v2' table of host1x and its modules:
+- opp-supported-hw: One bitfield indicating:
+	On Tegra20: SoC process ID mask
+	On Tegra30+: SoC speedo ID mask
+
+	A bitwise AND is performed against the value and if any bit
+	matches, the OPP gets enabled.
+
 Each host1x client module having to perform DMA through the Memory Controller
 should have the interconnect endpoints set to the Memory Client and External
 Memory respectively.
@@ -45,6 +57,8 @@  of the following host1x client modules:
   - interconnect-names: Must include name of the interconnect path for each
     interconnect entry. Consult TRM documentation for information about
     available memory clients, see MEMORY CONTROLLER section.
+  - operating-points-v2: See ../bindings/opp/opp.txt for details.
+  - power-domains: Phandle to MPE power domain.
 
 - vi: video input
 
@@ -128,6 +142,8 @@  of the following host1x client modules:
   - interconnect-names: Must include name of the interconnect path for each
     interconnect entry. Consult TRM documentation for information about
     available memory clients, see MEMORY CONTROLLER section.
+  - operating-points-v2: See ../bindings/opp/opp.txt for details.
+  - power-domains: Phandle to VENC power domain.
 
 - epp: encoder pre-processor
 
@@ -147,6 +163,8 @@  of the following host1x client modules:
   - interconnect-names: Must include name of the interconnect path for each
     interconnect entry. Consult TRM documentation for information about
     available memory clients, see MEMORY CONTROLLER section.
+  - operating-points-v2: See ../bindings/opp/opp.txt for details.
+  - power-domains: Phandle to HEG or core power domain.
 
 - isp: image signal processor
 
@@ -166,6 +184,7 @@  of the following host1x client modules:
   - interconnect-names: Must include name of the interconnect path for each
     interconnect entry. Consult TRM documentation for information about
     available memory clients, see MEMORY CONTROLLER section.
+  - power-domains: Phandle to VENC or core power domain.
 
 - gr2d: 2D graphics engine
 
@@ -185,6 +204,8 @@  of the following host1x client modules:
   - interconnect-names: Must include name of the interconnect path for each
     interconnect entry. Consult TRM documentation for information about
     available memory clients, see MEMORY CONTROLLER section.
+  - operating-points-v2: See ../bindings/opp/opp.txt for details.
+  - power-domains: Phandle to HEG or core power domain.
 
 - gr3d: 3D graphics engine
 
@@ -209,6 +230,8 @@  of the following host1x client modules:
   - interconnect-names: Must include name of the interconnect path for each
     interconnect entry. Consult TRM documentation for information about
     available memory clients, see MEMORY CONTROLLER section.
+  - operating-points-v2: See ../bindings/opp/opp.txt for details.
+  - power-domains: Phandles to 3D or core power domain.
 
 - dc: display controller
 
@@ -241,6 +264,8 @@  of the following host1x client modules:
   - interconnect-names: Must include name of the interconnect path for each
     interconnect entry. Consult TRM documentation for information about
     available memory clients, see MEMORY CONTROLLER section.
+  - operating-points-v2: See ../bindings/opp/opp.txt for details.
+  - power-domains: Phandle to core power domain.
 
 - hdmi: High Definition Multimedia Interface
 
@@ -267,6 +292,7 @@  of the following host1x client modules:
   - nvidia,hpd-gpio: specifies a GPIO used for hotplug detection
   - nvidia,edid: supplies a binary EDID blob
   - nvidia,panel: phandle of a display panel
+  - operating-points-v2: See ../bindings/opp/opp.txt for details.
 
 - tvo: TV encoder output
 
@@ -277,6 +303,10 @@  of the following host1x client modules:
   - clocks: Must contain one entry, for the module clock.
     See ../clocks/clock-bindings.txt for details.
 
+  Optional properties:
+  - operating-points-v2: See ../bindings/opp/opp.txt for details.
+  - power-domains: Phandle to core power domain.
+
 - dsi: display serial interface
 
   Required properties:
@@ -305,6 +335,7 @@  of the following host1x client modules:
   - nvidia,panel: phandle of a display panel
   - nvidia,ganged-mode: contains a phandle to a second DSI controller to gang
     up with in order to support up to 8 data lanes
+  - operating-points-v2: See ../bindings/opp/opp.txt for details.
 
 - sor: serial output resource
 
@@ -408,6 +439,8 @@  Example:
 		clocks = <&tegra_car TEGRA20_CLK_HOST1X>;
 		resets = <&tegra_car 28>;
 		reset-names = "host1x";
+		operating-points-v2 = <&dvfs_opp_table>;
+		power-domains = <&domain>;
 
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -421,6 +454,8 @@  Example:
 			clocks = <&tegra_car TEGRA20_CLK_MPE>;
 			resets = <&tegra_car 60>;
 			reset-names = "mpe";
+			operating-points-v2 = <&dvfs_opp_table>;
+			power-domains = <&domain>;
 		};
 
 		vi@54080000 {
@@ -429,6 +464,7 @@  Example:
 			interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
 			assigned-clocks = <&tegra_car TEGRA210_CLK_VI>;
 			assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_C4_OUT0>;
+			operating-points-v2 = <&dvfs_opp_table>;
 
 			clocks = <&tegra_car TEGRA210_CLK_VI>;
 			power-domains = <&pd_venc>;
@@ -510,6 +546,8 @@  Example:
 			clocks = <&tegra_car TEGRA20_CLK_EPP>;
 			resets = <&tegra_car 19>;
 			reset-names = "epp";
+			operating-points-v2 = <&dvfs_opp_table>;
+			power-domains = <&domain>;
 		};
 
 		isp {
@@ -528,6 +566,8 @@  Example:
 			clocks = <&tegra_car TEGRA20_CLK_GR2D>;
 			resets = <&tegra_car 21>;
 			reset-names = "2d";
+			operating-points-v2 = <&dvfs_opp_table>;
+			power-domains = <&domain>;
 		};
 
 		gr3d {
@@ -536,6 +576,8 @@  Example:
 			clocks = <&tegra_car TEGRA20_CLK_GR3D>;
 			resets = <&tegra_car 24>;
 			reset-names = "3d";
+			operating-points-v2 = <&dvfs_opp_table>;
+			power-domains = <&domain>;
 		};
 
 		dc@54200000 {
@@ -547,6 +589,8 @@  Example:
 			clock-names = "dc", "parent";
 			resets = <&tegra_car 27>;
 			reset-names = "dc";
+			operating-points-v2 = <&dvfs_opp_table>;
+			power-domains = <&domain>;
 
 			interconnects = <&mc TEGRA20_MC_DISPLAY0A &emc>,
 					<&mc TEGRA20_MC_DISPLAY0B &emc>,
@@ -571,6 +615,8 @@  Example:
 			clock-names = "dc", "parent";
 			resets = <&tegra_car 26>;
 			reset-names = "dc";
+			operating-points-v2 = <&dvfs_opp_table>;
+			power-domains = <&domain>;
 
 			interconnects = <&mc TEGRA20_MC_DISPLAY0AB &emc>,
 					<&mc TEGRA20_MC_DISPLAY0BB &emc>,
@@ -596,6 +642,7 @@  Example:
 			resets = <&tegra_car 51>;
 			reset-names = "hdmi";
 			status = "disabled";
+			operating-points-v2 = <&dvfs_opp_table>;
 		};
 
 		tvo {
@@ -604,6 +651,7 @@  Example:
 			interrupts = <0 76 0x04>;
 			clocks = <&tegra_car TEGRA20_CLK_TVO>;
 			status = "disabled";
+			operating-points-v2 = <&dvfs_opp_table>;
 		};
 
 		dsi {
@@ -615,6 +663,7 @@  Example:
 			resets = <&tegra_car 48>;
 			reset-names = "dsi";
 			status = "disabled";
+			operating-points-v2 = <&dvfs_opp_table>;
 		};
 	};