From: Biwen Li <biwen.li@nxp.com>
To: leoyang.li@nxp.com, shawnguo@kernel.org, robh+dt@kernel.org,
mark.rutland@arm.com, ran.wang_1@nxp.com
Cc: devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, Biwen Li <biwen.li@nxp.com>
Subject: [v5 3/3] Documentation: dt: binding: fsl: Add 'fsl, ippdexpcr1-alt-addr' property
Date: Tue, 3 Dec 2019 20:28:18 +0800 [thread overview]
Message-ID: <20191203122818.21941-3-biwen.li@nxp.com> (raw)
In-Reply-To: <20191203122818.21941-1-biwen.li@nxp.com>
The 'fsl,ippdexpcr1-alt-addr' property is used to handle an errata A-008646
on LS1021A
Signed-off-by: Biwen Li <biwen.li@nxp.com>
---
Change in v5:
- none
Change in v4:
- rename property name
fsl,ippdexpcr-alt-addr -> fsl,ippdexpcr1-alt-addr
Change in v3:
- rename property name
fsl,rcpm-scfg -> fsl,ippdexpcr-alt-addr
Change in v2:
- update desc of the property
'fsl,rcpm-scfg'
.../devicetree/bindings/soc/fsl/rcpm.txt | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
index 5a33619d881d..751a7655b694 100644
--- a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
+++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
@@ -34,6 +34,13 @@ 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 1 + 2 entries.
+ The first entry must be a link to the SCFG device node.
+ The non-first entry must be offset of registers of SCFG.
+ The second and third entry compose an alt offset address
+ for IPPDEXPCR1(SCFG_SPARECR8)
Example:
The RCPM node for T4240:
@@ -43,6 +50,20 @@ The RCPM node for T4240:
#fsl,rcpm-wakeup-cells = <2>;
};
+The RCPM node for LS1021A:
+ rcpm: rcpm@1ee2140 {
+ 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 0x0 0x51c>;
+ };
+
+
* Freescale RCPM Wakeup Source Device Tree Bindings
-------------------------------------------
Required fsl,rcpm-wakeup property should be added to a device node if the device
--
2.17.1
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next prev parent reply other threads:[~2019-12-03 12:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-03 12:28 [v5 1/3] soc: fsl: handle RCPM errata A-008646 on SoC LS1021A Biwen Li
2019-12-03 12:28 ` [v5 2/3] arm: dts: ls1021a: fix that FlexTimer cannot wakeup system in deep sleep Biwen Li
2019-12-03 12:28 ` Biwen Li [this message]
2019-12-16 15:53 ` [v5 3/3] Documentation: dt: binding: fsl: Add 'fsl,ippdexpcr1-alt-addr' property Rob Herring
2019-12-04 3:07 ` [v5 1/3] soc: fsl: handle RCPM errata A-008646 on SoC LS1021A Biwen Li
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