On Wed, Sep 11 2019 at 04:05 -0600, Linus Walleij wrote:
On Thu, Aug 29, 2019 at 8:47 PM Lina Iyer <ilina@xxxxxxxxxxxxxx> wrote:+- qcom,scm-spi-cfg: + Usage: optional + Value type: <bool> + Definition: Specifies if the SPI configuration registers have to be + written from the firmware. + Example: pdc: interrupt-controller@b220000 { compatible = "qcom,sdm845-pdc"; - reg = <0xb220000 0x30000>; + reg = <0xb220000 0x30000>, <0x179900f0 0x60>; qcom,pdc-ranges = <0 512 94>, <94 641 15>, <115 662 7>; #interrupt-cells = <2>; interrupt-parent = <&intc>; interrupt-controller; + qcom,scm-spi-cfg;You can probably drop this bool if you just give names to the registers. Like reg = <0xb220000 0x30000>, <0x179900f0 0x60>; reg-names = "gic", "pdc"; Then jus check explicitly for a "pdc" register and in that case initialize the PDC.
Well the address remains the same. The bool defines how to access that register address - from linux or from the firmware using SCM calls. But I get your point, I could have different register namess - pdc-linux or pdc-scm and request by name. I can then use that to determine the mode for accessing the register. Thanks, Lina
