RE: [PATCH v3 1/5] Documentation: dt: binding: fsl: Add 'fsl,ippdexpcr1-alt-reg' property
From: Ran Wang <hidden>
Date: 2020-10-10 02:12:08
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linux-arm-kernel, linuxppc-dev, lkml
Hi Rob, On Tuesday, September 29, 2020 4:23 PM, Ran Wang wrote:
From: Biwen Li <redacted> The 'fsl,ippdexpcr1-alt-reg' property is used to handle an errata A-008646 on LS1021A. Signed-off-by: Biwen Li <redacted> Signed-off-by: Ran Wang <redacted> --- Change in v3: - Simplize related proterty definition and rename it.
Could you please comment for this version? Thanks in advance. Regards, Ran
quoted hunk ↗ jump to hunk
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.txtb/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 thedevice -- 2.7.4