Hi Tony, Tero, All,
It seems MMC PBIAS regulator functionality is broken now (on DRA7 at least).
1) On DRA7 I can see that "pbias_regulator: pbias_regulator" device is not
registered. It happens because pbias_mmc_reg is defined in DT as child
of scm_conf: scm_conf@0 which is "syscon" and, as result, it's not populated
neither by of_platform_populate neither by Syscon driver.
scm_conf: scm_conf@0 {
compatible = "syscon", "simple-bus";
reg = <0x0 0x1400>;
#address-cells = <1>;
#size-cells = <1>;
pbias_regulator: pbias_regulator {
2) if I add "simple-bus" to scm_conf the "pbias_regulator: pbias_regulator"
device will be registered
scm_conf: scm_conf@0 {
compatible = "syscon", "simple-bus";
but its probe will fail:
[ 0.682549] pbias-regulator: probe of 4a002000.scm_conf:pbias_regulator
failed with error -22
3) Seems this issue was introduced by series
[PATCHv6 00/34] ARM: OMAP2+: PRCM+SCM cleanup against 4.0-rc1
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-March/334846.html
--
regards,
-grygorii
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