On Thu, Sep 21, 2017 at 03:45:28PM +0800, Hanjun Guo wrote: > On 2017/9/21 15:12, Mayuresh Chitale wrote: > > This patch modifies the optee driver to add support for parsing > > the conduit method from an ACPI node. > > Sorry I didn't involve this earlier, but I think this is a wrong > approach, in ACPI 5.1+ spec, there is a bit in FADT table which > indicates PSCI using SMC or HVC, please see ACPI 6.2 [1], > Table 5-37 Fixed ACPI Description Table ARM Boot Architecture Flags. > > Can we just use that to get the conduit method for optee driver too? > > [1]: http://www.uefi.org/sites/default/files/resources/ACPI_6_2.pdf It is just not a matter of conduit method but also to define how OPTEE should be detected. It is up to Linaro (who owns OP-TEE) to put forward a binding at ACPI (ARM) spec level. We do not define ACPI bindings on a kernel mailing list. NAK on this patch. Lorenzo -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
