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x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: AM6PR04MB5413.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: d047ef28-77c1-45b4-9024-08d85f8c101a X-MS-Exchange-CrossTenant-originalarrivaltime: 23 Sep 2020 06:44:04.1802 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: /LMRIRilXFrtWEwKTyodFZ1CXhQW26hTMY4fKYAoxIg1J1gIl4pyFp5EqQIVjHvJU69AorWeC88I7TYNWaTjmw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR04MB4968 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Rob, On Wednesday, September 23, 2020 10:33 AM, Rob Herring wrote: >=20 > On Wed, Sep 16, 2020 at 04:18:27PM +0800, Ran Wang wrote: > > From: Biwen Li > > > > The 'fsl,ippdexpcr1-alt-addr' property is used to handle an errata > > A-008646 on LS1021A > > > > Signed-off-by: Biwen Li > > Signed-off-by: Ran Wang > > --- > > 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 RC= PM > > will be Big Endian (default case). > > + - fsl,ippdexpcr1-alt-addr : The property is related to a hardware iss= ue > > + 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. >=20 > You don't need a DT change for this. You can find SCFG node by its compat= ible > string and then the offset should be known given this issue is only on 1 = SoC. Did you mean that RCPM driver just to access IPPDEXPCR1 shadowed register i= n SCFG directly without fetching it's offset info. from DT? Regards, Ran