Hi Hi Conor, > > On Fri, Dec 01, 2023 at 06:41:59AM +0000, Xu Yang wrote: > > Hi Conor, > > > > > > > > On Mon, Nov 27, 2023 at 03:32:06PM +0800, Xu Yang wrote: > > > > i.MX95 has a more precise counting capability than i.MX93. This will add > > > > a compatible for it. > > > > > > It is hard to tell from this comment, but I figure this "more precise > > > capability" is not an option you can enable, but instead makes the > > > programming model of this device different to that of the imx93? > > > > Actually, imx95 is compatible with imx93 except AXI ID filter capability. > > But for AXI ID filter, imx95 is using different registers and bits from > > imx93 for filter configuration. > > This sounds like it conflicts with... > > > To distinguish them, I need use different > > compatible because programming model cannot recognize which device is > > running. > > > > compatible = "fsl,imx95-ddr-pmu"; > > > compatible = "fsl,imx95-ddr-pmu", "fsl,imx93-ddr-pmu"; > > ...this. If drivers for the imx93 need changes to work on the imx95, > then `compatible = "fsl,imx95-ddr-pmu", "fsl,imx93-ddr-pmu";` cannot be > used. If they will work, with only the new imx95 features being > non-functional, then you can use it. Yes, it is. When compatible = "fsl,imx95-ddr-pmu", "fsl,imx93-ddr-pmu" is used, only the new imx95 features is not functional, other basic function works for both imx95 and imx93. Thanks, Xu Yang > > > Both above compatible is okay for me. Therefore, "fsl,imx95-ddr-pmu" is needed.
