From: Ran Wang <ran.wang_1@nxp.com>
To: Li Yang <leoyang.li@nxp.com>, Rob Herring <robh+dt@kernel.org>,
Shawn Guo <shawnguo@kernel.org>
Cc: devicetree@vger.kernel.org, Biwen Li <biwen.li@nxp.com>,
linux-kernel@vger.kernel.org, Ran Wang <ran.wang_1@nxp.com>,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 1/5] Documentation: dt: binding: fsl: Add 'fsl, ippdexpcr1-alt-reg' property
Date: Tue, 29 Sep 2020 16:22:30 +0800 [thread overview]
Message-ID: <20200929082234.36619-1-ran.wang_1@nxp.com> (raw)
From: Biwen Li <biwen.li@nxp.com>
The 'fsl,ippdexpcr1-alt-reg' property is used to handle an errata A-008646
on LS1021A.
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
---
Change in v3:
- Simplize related proterty definition and rename it.
Change in v2:
- None
Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
index 5a33619..62a22fc 100644
--- a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
+++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
@@ -34,6 +34,9 @@ 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-reg : The property is trying to workaround a
+ hardware issue (found on SoC LS1021A only), if pressent, RCPM driver
+ will use SCFG_SPARECR8 as a shadow register for RCPM_IPPDEXPCR1.
Example:
The RCPM node for T4240:
@@ -43,6 +46,15 @@ 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>;
+ fsl,ippdexpcr1-alt-reg;
+ };
+
+
* 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
next reply other threads:[~2020-09-29 8:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-29 8:22 Ran Wang [this message]
2020-09-29 8:22 ` [PATCH v3 2/5] soc: fsl: handle RCPM errata A-008646 on SoC LS1021A Ran Wang
2020-09-29 8:22 ` [PATCH v3 3/5] arm: dts: ls1021a: enable RCPM workaround for erratum A-008646 Ran Wang
2020-09-29 8:22 ` [PATCH v3 4/5] arm: dts: ls1021a: fix flextimer failed to wake system Ran Wang
2020-09-29 8:22 ` [PATCH v3 5/5] arm: dts: ls1021a: fix rcpm failed to claim resource Ran Wang
2020-10-10 1:57 ` [PATCH v3 1/5] Documentation: dt: binding: fsl: Add 'fsl,ippdexpcr1-alt-reg' property Ran Wang
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