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From: Lee Jones <>
Subject: [PATCH 4/4] clk: dt: st: Introduce clock domain documentation
Date: Mon, 26 Jan 2015 11:14:00 +0000	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Signed-off-by: Lee Jones <>
 .../devicetree/bindings/clock/st/st,clk-domain.txt | 34 ++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/st/st,clk-domain.txt

diff --git a/Documentation/devicetree/bindings/clock/st/st,clk-domain.txt b/Documentation/devicetree/bindings/clock/st/st,clk-domain.txt
new file mode 100644
index 0000000..7309937
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/st/st,clk-domain.txt
@@ -0,0 +1,34 @@
+STMicroelectronics Clock Domain
+ST hardware have a bunch of clocks which must not be turned off.
+If drivers a) fail to obtain a reference to any of these or b) give
+up a previously obtained reference during suspend, the common clk
+framework will attempt to turn them off and the hardware will
+subsequently die.  The only way to recover from this failure is to
+To avoid either of these two scenarios from catastrophically
+disabling the running system we have implemented a clock domain
+where clocks are consumed and references are taken, thus preventing
+them from being shut down by the framework.
+We use the generic clock bindings found in:
+  Documentation/devicetree/bindings/clock/clock-bindings.txt
+Required properties:
+- compatible : Must be "st,clk-domain"
+clk-domain {
+	compatible = "st,clk-domain";
+	clocks = <&clk_s_c0_flexgen CLK_EXT2F_A9>,
+		 <&clk_s_c0_flexgen CLK_COMPO_DVP>,
+		 <&clk_s_c0_flexgen CLK_MMC_1>,
+		 <&clk_s_c0_flexgen CLK_ICN_SBC>,
+		 <&clk_s_c0_flexgen CLK_ICN_LMI>,
+		 <&clk_s_c0_flexgen CLK_ICN_CPU>,
+		 <&clk_s_c0_flexgen CLK_TX_ICN_DMU>,
+		 <&clk_s_a0_flexgen CLK_IC_LMI0>,
+		 <&clk_m_a9>;

  parent reply	other threads:[~2015-01-26 11:14 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-26 11:13 [PATCH 0/4] clk: st: New clock domain Lee Jones
2015-01-26 11:13 ` [PATCH 1/4] ARM: sti: stih407-family: Supply defines for CLOCKGEN A0 Lee Jones
2015-01-26 11:13 ` [PATCH 2/4] ARM: sti: stih407-family: Provide Clock Domain information Lee Jones
2015-01-26 11:13 ` [PATCH 3/4] clk: st: Provide a clock domain Lee Jones
2015-01-26 11:14 ` Lee Jones [this message]
2015-01-28  1:19   ` [PATCH 4/4] clk: dt: st: Introduce clock domain documentation Mike Turquette
2015-01-28  7:58     ` Lee Jones

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