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Date: Wed, 23 Sep 2020 14:25:06 +0800 From: Ran Wang <ran.wang_1@....com> To: Li Yang <leoyang.li@....com>, Rob Herring <robh+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org> Cc: linuxppc-dev@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, Biwen Li <biwen.li@....com>, Ran Wang <ran.wang_1@....com> Subject: [PATCH v2 1/5] Documentation: dt: binding: fsl: Add 'fsl,ippdexpcr1-alt-addr' property From: Biwen Li <biwen.li@....com> The 'fsl,ippdexpcr1-alt-addr' property is used to handle an errata A-008646 on LS1021A Signed-off-by: Biwen Li <biwen.li@....com> Signed-off-by: Ran Wang <ran.wang_1@....com> --- Change in v2: - None Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt index 5a33619..1be58a3 100644 --- a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt +++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt @@ -34,6 +34,11 @@ Chassis Version Example Chips Optional properties: - little-endian : RCPM register block is Little Endian. Without it RCPM will be Big Endian (default case). + - fsl,ippdexpcr1-alt-addr : The property is related to a hardware issue + on SoC LS1021A and only needed on SoC LS1021A. + Must include 2 entries: + The first entry must be a link to the SCFG device node. + The 2nd entry must be offset of register IPPDEXPCR1 in SCFG. Example: The RCPM node for T4240: @@ -43,6 +48,20 @@ The RCPM node for T4240: #fsl,rcpm-wakeup-cells = <2>; }; +The RCPM node for LS1021A: + rcpm: rcpm@...2140 { + compatible = "fsl,ls1021a-rcpm", "fsl,qoriq-rcpm-2.1+"; + reg = <0x0 0x1ee2140 0x0 0x8>; + #fsl,rcpm-wakeup-cells = <2>; + + /* + * The second and third entry compose an alt offset + * address for IPPDEXPCR1(SCFG_SPARECR8) + */ + fsl,ippdexpcr1-alt-addr = <&scfg 0x51c>; + }; + + * Freescale RCPM Wakeup Source Device Tree Bindings ------------------------------------------- Required fsl,rcpm-wakeup property should be added to a device node if the device -- 2.7.4
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