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authorLinus Torvalds <torvalds@linux-foundation.org>2016-08-01 18:36:01 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-01 18:36:01 -0400
commit43a0a98aa8da71583f84b84fd72e265c24d4c5f8 (patch)
tree3830aff2b36f48a67be5f485f00f56cf4269729d /Documentation/devicetree/bindings/arm
parent6911a5281430cf6897376487698504620f454791 (diff)
parentf8c6d88b2c874295f49b9ad1ca0826b9a8ef3180 (diff)
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson: "Driver updates for ARM SoCs. A slew of changes this release cycle. The reset driver tree, that we merge through arm-soc for historical reasons, is also sizable this time around. Among the changes: - clps711x: Treewide changes to compatible strings, merged here for simplicity. - Qualcomm: SCM firmware driver cleanups, move to platform driver - ux500: Major cleanups, removal of old mach-specific infrastructure. - Atmel external bus memory driver - Move of brcmstb platform to the rest of bcm - PMC driver updates for tegra, various fixes and improvements - Samsung platform driver updates to support 64-bit Exynos platforms - Reset controller cleanups moving to devm_reset_controller_register() APIs - Reset controller driver for Amlogic Meson - Reset controller driver for Hisilicon hi6220 - ARM SCPI power domain support" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (100 commits) ARM: ux500: consolidate base platform files ARM: ux500: move soc_id driver to drivers/soc ARM: ux500: call ux500_setup_id later ARM: ux500: consolidate soc_device code in id.c ARM: ux500: remove cpu_is_u* helpers ARM: ux500: use CLK_OF_DECLARE() ARM: ux500: move l2x0 init to .init_irq mfd: db8500 stop passing around platform data ASoC: ab8500-codec: remove platform data based probe ARM: ux500: move ab8500_regulator_plat_data into driver ARM: ux500: remove unused regulator data soc: raspberrypi-power: add CONFIG_OF dependency firmware: scpi: add CONFIG_OF dependency video: clps711x-fb: Changing the compatibility string to match with the smallest supported chip input: clps711x-keypad: Changing the compatibility string to match with the smallest supported chip pwm: clps711x: Changing the compatibility string to match with the smallest supported chip serial: clps711x: Changing the compatibility string to match with the smallest supported chip irqchip: clps711x: Changing the compatibility string to match with the smallest supported chip clocksource: clps711x: Changing the compatibility string to match with the smallest supported chip clk: clps711x: Changing the compatibility string to match with the smallest supported chip ...
Diffstat (limited to 'Documentation/devicetree/bindings/arm')
-rw-r--r--Documentation/devicetree/bindings/arm/arm,scpi.txt34
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/arm,scpi.txt b/Documentation/devicetree/bindings/arm/arm,scpi.txt
index 313dabdc14f9..faa4b44572e3 100644
--- a/Documentation/devicetree/bindings/arm/arm,scpi.txt
+++ b/Documentation/devicetree/bindings/arm/arm,scpi.txt
@@ -87,10 +87,33 @@ Required properties:
implementation for the IDs to use. For Juno
R0 and Juno R1 refer to [3].
+Power domain bindings for the power domains based on SCPI Message Protocol
+------------------------------------------------------------
+
+This binding uses the generic power domain binding[4].
+
+PM domain providers
+===================
+
+Required properties:
+ - #power-domain-cells : Should be 1. Contains the device or the power
+ domain ID value used by SCPI commands.
+ - num-domains: Total number of power domains provided by SCPI. This is
+ needed as the SCPI message protocol lacks a mechanism to
+ query this information at runtime.
+
+PM domain consumers
+===================
+
+Required properties:
+ - power-domains : A phandle and PM domain specifier as defined by bindings of
+ the power controller specified by phandle.
+
[0] http://infocenter.arm.com/help/topic/com.arm.doc.dui0922b/index.html
[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
[2] Documentation/devicetree/bindings/thermal/thermal.txt
[3] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0922b/apas03s22.html
+[4] Documentation/devicetree/bindings/power/power_domain.txt
Example:
@@ -144,6 +167,12 @@ scpi_protocol: scpi@2e000000 {
compatible = "arm,scpi-sensors";
#thermal-sensor-cells = <1>;
};
+
+ scpi_devpd: scpi-power-domains {
+ compatible = "arm,scpi-power-domains";
+ num-domains = <2>;
+ #power-domain-cells = <1>;
+ };
};
cpu@0 {
@@ -156,6 +185,7 @@ hdlcd@7ff60000 {
...
reg = <0 0x7ff60000 0 0x1000>;
clocks = <&scpi_clk 4>;
+ power-domains = <&scpi_devpd 1>;
};
thermal-zones {
@@ -186,3 +216,7 @@ The thermal-sensors property in the soc_thermal node uses the
temperature sensor provided by SCP firmware to setup a thermal
zone. The ID "3" is the sensor identifier for the temperature sensor
as used by the firmware.
+
+The num-domains property in scpi-power-domains domain specifies that
+SCPI provides 2 power domains. The hdlcd node uses the power domain with
+domain ID 1.