From: Dongsheng Wang <dongsheng.wang@freescale.com>
To: <scottwood@freescale.com>
Cc: <devicetree@vger.kernel.org>, <linuxppc-dev@lists.ozlabs.org>,
<jason.jin@freescale.com>, <chenhui.zhao@freescale.com>,
<yuantian.tang@freescale.com>, <alison.wang@freescale.com>,
<robh+dt@kernel.org>, <linux-arm-kernel@lists.infradead.org>,
Wang Dongsheng <dongsheng.wang@freescale.com>,
Tang Yuantian <Yuantian.Tang@freescale.com>
Subject: [PATCH 1/2] fsl: Add binding for RCPM
Date: Wed, 9 Sep 2015 14:42:46 +0800 [thread overview]
Message-ID: <1441780967-30879-1-git-send-email-dongsheng.wang@freescale.com> (raw)
From: Wang Dongsheng <dongsheng.wang@freescale.com>
RCPM is the Run Control and Power Management module performs all
device-level tasks associated with device run control and power
management.
Add this for freescale powerpc platform and layerscape platform.
Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
new file mode 100644
index 0000000..284070c
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
@@ -0,0 +1,64 @@
+* Run Control and Power Management
+-------------------------------------------
+The RCPM performs all device-level tasks associated with device run control
+and power management.
+
+Required properites:
+ - reg : Offset and length of the register set of RCPM block.
+ - compatible : Sould contain a chip-specific RCPM block compatible string
+ and (if applicable) may contain a chassis-version RCPM compatible string.
+ Chip-specific strings are of the form "fsl,<chip>-rcpm", such as:
+ * "fsl,p2041-rcpm"
+ * "fsl,p3041-rcpm"
+ * "fsl,p4080-rcpm"
+ * "fsl,p5020-rcpm"
+ * "fsl,p5040-rcpm"
+ * "fsl,t4240-rcpm"
+ * "fsl,b4420-rcpm"
+ * "fsl,b4860-rcpm"
+
+ Chassis-version strings are of the form "fsl,qoriq-rcpm-<version>",
+ such as:
+ * "fsl,qoriq-rcpm-1.0": for chassis 1.0 rcpm
+ * "fsl,qoriq-rcpm-2.0": for chassis 2.0 rcpm
+ * "fsl,qoriq-rcpm-2.1": for chassis 2.1 rcpm
+
+All references to "1.0" and "2.0" refer to the QorIQ chassis version to
+which the chip complies.
+Chassis Version Example Chips
+--------------- -------------------------------
+1.0 p4080, p5020, p5040, p2041, p3041
+2.0 t4240, b4860, b4420
+2.1 t1040, ls1021
+
+Example:
+The RCPM node for T4240:
+ rcpm: global-utilities@e2000 {
+ compatible = "fsl,t4240-rcpm", "fsl,qoriq-rcpm-2.0";
+ reg = <0xe2000 0x1000>;
+ };
+
+The RCPM node for P4080:
+ rcpm: global-utilities@e2000 {
+ compatible = "fsl,qoriq-rcpm-1.0";
+ reg = <0xe2000 0x1000>;
+ };
+
+* Freescale RCPM Wakeup Source Device Tree Bindings
+-------------------------------------------
+Required rcpm-wakeup property should be added to a device node if the device
+can be used as a wakeup source.
+
+ - rcpm-wakeup: should contain a pointer to the rcpm node and the
+ corresponding bit of device in the register.
+
+Example:
+ lpuart0: serial@2950000 {
+ compatible = "fsl,ls1021a-lpuart";
+ reg = <0x0 0x2950000 0x0 0x1000>;
+ interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&sysclk>;
+ clock-names = "ipg";
+ rcpm-wakeup = <&rcpm 0x0 0x40000000>;
+ status = "disabled";
+ };
--
2.1.0.27.g96db324
next reply other threads:[~2015-09-09 7:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-09 6:42 Dongsheng Wang [this message]
2015-09-09 6:42 ` [PATCH 2/2] arm/layerscape: add RCPM device tree support for ls1021a Dongsheng Wang
2015-09-09 19:56 ` [PATCH 1/2] fsl: Add binding for RCPM Scott Wood
2015-09-10 2:03 ` Wang Dongsheng
2015-09-10 16:46 ` Scott Wood
2015-09-11 3:19 ` Wang Dongsheng
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