Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/power/pd-samsung.txt b/Documentation/devicetree/bindings/power/pd-samsung.txt
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+* Samsung Exynos Power Domains
+
+Exynos processors include support for multiple power domains which are used
+to gate power to one or more peripherals on the processor.
+
+Required Properties:
+- compatible: should be one of the following.
+    * samsung,exynos4210-pd - for exynos4210 type power domain.
+    * samsung,exynos5433-pd - for exynos5433 type power domain.
+- reg: physical base address of the controller and length of memory mapped
+    region.
+- #power-domain-cells: number of cells in power domain specifier;
+    must be 0.
+
+Optional Properties:
+- label: Human readable string with domain name. Will be visible in userspace
+	to let user to distinguish between multiple domains in SoC.
+- power-domains: phandle pointing to the parent power domain, for more details
+		 see Documentation/devicetree/bindings/power/power_domain.txt
+
+Deprecated Properties:
+- clocks
+- clock-names
+
+Node of a device using power domains must have a power-domains property
+defined with a phandle to respective power domain.
+
+Example:
+
+	lcd0: power-domain-lcd0 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10023C00 0x10>;
+		#power-domain-cells = <0>;
+		label = "LCD0";
+	};
+
+	mfc_pd: power-domain@10044060 {
+		compatible = "samsung,exynos4210-pd";
+		reg = <0x10044060 0x20>;
+		#power-domain-cells = <0>;
+		label = "MFC";
+	};
+
+See Documentation/devicetree/bindings/power/power_domain.txt for description
+of consumer-side bindings.