linux-kernel - [PATCH V3 2/2] ARM: dts: imx7s: add snvs rtc clock

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Date:   Tue, 9 Jan 2018 17:20:51 +0800
From:   Anson Huang <Anson.Huang@....com>
To:     <horia.geanta@....com>, <aymen.sghaier@....com>,
        <herbert@...dor.apana.org.au>, <davem@...emloft.net>,
        <robh+dt@...nel.org>, <mark.rutland@....com>,
        <shawnguo@...nel.org>, <kernel@...gutronix.de>,
        <fabio.estevam@....com>, <linux@...linux.org.uk>,
        <mturquette@...libre.com>, <sboyd@...eaurora.org>,
        <adriana.reus@....com>, <stefan@...er.ch>, <dongas86@...il.com>
CC:     <linux-crypto@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-clk@...r.kernel.org>
Subject: [PATCH V3 2/2] ARM: dts: imx7s: add snvs rtc clock

Add i.MX7 SNVS RTC clock.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
changes since v2:
	improve the binding doc statement about clocks.
 Documentation/devicetree/bindings/crypto/fsl-sec4.txt | 15 +++++++++++++++
 arch/arm/boot/dts/imx7s.dtsi                          |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/crypto/fsl-sec4.txt b/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
index 76aec8a..7329f29 100644
--- a/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
+++ b/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
@@ -415,12 +415,25 @@ Secure Non-Volatile Storage (SNVS) Low Power (LP) RTC Node
 	value type: <u32>
 	Definition: LP register offset. default it is 0x34.
 
+   - clocks
+      Usage: required if SNVS LP RTC requires explicit enablement of clocks
+      Value type: <prop_encoded-array>
+      Definition:  a clock specifier describing the clock required for
+          enabling and disabling SNVS LP RTC.
+
+   - clock-names
+      Usage: required if SNVS LP RTC requires explicit enablement of clocks
+      Value type: <string>
+      Definition: clock name string should be "snvs-rtc".
+
 EXAMPLE
 	sec_mon_rtc_lp@1 {
 		compatible = "fsl,sec-v4.0-mon-rtc-lp";
 		interrupts = <93 2>;
 		regmap = <&snvs>;
 		offset = <0x34>;
+		clocks = <&clks IMX7D_SNVS_CLK>;
+		clock-names = "snvs-rtc";
 	};
 
 =====================================================================
@@ -543,6 +556,8 @@ FULL EXAMPLE
 			regmap = <&sec_mon>;
 			offset = <0x34>;
 			interrupts = <93 2>;
+			clocks = <&clks IMX7D_SNVS_CLK>;
+			clock-names = "snvs-rtc";
 		};
 
 		snvs-pwrkey@...cc000 {
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 9aa2bb9..02baf42 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -551,6 +551,8 @@
 					offset = <0x34>;
 					interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>,
 						     <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+					clocks = <&clks IMX7D_SNVS_CLK>;
+					clock-names = "snvs-rtc";
 				};
 
 				snvs_poweroff: snvs-poweroff {
-- 
1.9.1