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authorEmmanuel Vadot <manu@FreeBSD.org>2017-10-21 15:18:20 +0000
committerEmmanuel Vadot <manu@FreeBSD.org>2017-10-21 15:18:20 +0000
commitd5464ff11700ac44568e6816e00d1d1427cc46ae (patch)
tree1c388ab705b506c8d0e3f16710bfaa2cbc623262 /Bindings/clock/ti,sci-clk.txt
parentf3f213a6f94d330b77b3910f4c66b62aeec50645 (diff)
downloadsrc-d5464ff11700ac44568e6816e00d1d1427cc46ae.tar.gz
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dts: Update the Device Tree Sources to Linux 4.13vendor/device-tree/4.13
Notes
Notes: svn path=/vendor/device-tree/dist/; revision=324818 svn path=/vendor/device-tree/4.13/; revision=324819; tag=vendor/device-tree/4.13
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+Texas Instruments TI-SCI Clocks
+===============================
+
+All clocks on Texas Instruments' SoCs that contain a System Controller,
+are only controlled by this entity. Communication between a host processor
+running an OS and the System Controller happens through a protocol known
+as TI-SCI[1]. This clock implementation plugs into the common clock
+framework and makes use of the TI-SCI protocol on clock API requests.
+
+[1] Documentation/devicetree/bindings/arm/keystone/ti,sci.txt
+
+Required properties:
+-------------------
+- compatible: Must be "ti,k2g-sci-clk"
+- #clock-cells: Shall be 2.
+ In clock consumers, this cell represents the device ID and clock ID
+ exposed by the PM firmware. The assignments can be found in the header
+ files <dt-bindings/genpd/<soc>.h> (which covers the device IDs) and
+ <dt-bindings/clock/<soc>.h> (which covers the clock IDs), where <soc>
+ is the SoC involved, for example 'k2g'.
+
+Examples:
+--------
+
+pmmc: pmmc {
+ compatible = "ti,k2g-sci";
+
+ k2g_clks: clocks {
+ compatible = "ti,k2g-sci-clk";
+ #clock-cells = <2>;
+ };
+};
+
+uart0: serial@2530c00 {
+ compatible = "ns16550a";
+ clocks = <&k2g_clks 0x2c 0>;
+};