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Date: Fri, 31 Aug 2018 11:52:18 +0800 From: Ran Wang <ran.wang_1@....com> To: Leo Li <leoyang.li@....com>, Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com> Cc: linuxppc-dev@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, Ran Wang <ran.wang_1@....com> Subject: [PATCH 2/3] Documentation: dt: binding: fsl: update property description for RCPM Add property 'big-endian' and supportted IP's configuration info. Remove property 'fsl,#rcpm-wakeup-cell'. Signed-off-by: Ran Wang <ran.wang_1@....com> --- Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 42 ++++++------------- 1 files changed, 13 insertions(+), 29 deletions(-) diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt index e284e4e..7fc630a 100644 --- a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt +++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt @@ -5,8 +5,6 @@ and power management. Required properites: - reg : Offset and length of the register set of the RCPM block. - - fsl,#rcpm-wakeup-cells : The number of IPPDEXPCR register cells in the - fsl,rcpm-wakeup property. - compatible : Must 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", @@ -27,37 +25,23 @@ Chassis Version Example Chips --------------- ------------------------------- 1.0 p4080, p5020, p5040, p2041, p3041 2.0 t4240, b4860, b4420 -2.1 t1040, ls1021 +2.1 t1040, ls1021, ls1012 + +Optional properties: + - big-endian : Indicate RCPM registers is big-endian. A RCPM node + that doesn't have this property will be regarded as little-endian. + - <property 'compatible' string of consumer device> : This string + is referred by RCPM driver to judge if the consumer (such as flex timer) + is able to be regards as wakeup source or not, such as 'fsl,ls1012a-ftm'. + Further, this property will carry the bit mask info to control + coresponding wake up source. Example: The RCPM node for T4240: rcpm: global-utilities@...00 { compatible = "fsl,t4240-rcpm", "fsl,qoriq-rcpm-2.0"; reg = <0xe2000 0x1000>; - fsl,#rcpm-wakeup-cells = <2>; - }; - -* Freescale RCPM Wakeup Source Device Tree Bindings -------------------------------------------- -Required fsl,rcpm-wakeup property should be added to a device node if the device -can be used as a wakeup source. - - - fsl,rcpm-wakeup: Consists of a phandle to the rcpm node and the IPPDEXPCR - register cells. The number of IPPDEXPCR register cells is defined in - "fsl,#rcpm-wakeup-cells" in the rcpm node. The first register cell is - the bit mask that should be set in IPPDEXPCR0, and the second register - cell is for IPPDEXPCR1, and so on. - - Note: IPPDEXPCR(IP Powerdown Exception Control Register) provides a - mechanism for keeping certain blocks awake during STANDBY and MEM, in - order to use them as wake-up sources. - -Example: - lpuart0: serial@...0000 { - compatible = "fsl,ls1021a-lpuart"; - reg = <0x0 0x2950000 0x0 0x1000>; - interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>; - clocks = <&sysclk>; - clock-names = "ipg"; - fsl,rcpm-wakeup = <&rcpm 0x0 0x40000000>; + big-endian; + fsl,ls1012a-ftm = <0x20000>; + fsl,pfe = <0xf0000020>; }; -- 1.7.1
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