[U-Boot] [PATCH v3] dm: core: device: switch off power domain after device removal

Simon Glass sjg at chromium.org
Fri Sep 27 01:48:56 UTC 2019

Hi Anatolij,

On Thu, 1 Aug 2019 at 00:44, Anatolij Gustschin <agust at denx.de> wrote:
> Hi Lokesh,
> On Thu, 1 Aug 2019 09:43:39 +0530
> Lokesh Vutla lokeshvutla at ti.com wrote:
> >On 01/08/19 2:55 AM, Anatolij Gustschin wrote:
> >> The power domain associated with a device is enabled when probing,
> >> but currently the domain remains enabled when the device is removed.
> >> Some boards started to disable power domains for selected devices
> >> via custom board_quiesce_devices(), but it doesn't work in many
> >> cases, i. e. because devices still can be accessed later in
> >> .remove() callback on behalf of dm_remove_devices_flags().
> >>
> >> Utilize the DM core to power off the device power domain, but add a
> >> device flag to be able to selectively let the power domain enabled
> >> after device removal. This might be required for devices that must
> >> remain enabled when booting OS, i. e. serial console for debug
> >> output, etc.
> >>
> >> Signed-off-by: Anatolij Gustschin <agust at denx.de>
> >> ---
> >> Changes in v3:
> >>  - remove 'power-domain' device to fix dm power-domain test (make qcheck)
> >>  - don't switch off the power domain for current console device

This still breaks 'make qcheck' for me. It doesn't build sandbox_spl:

crosfw -b sandbox_spl
cmd: 'make -j32 'ARCH=sandbox' 'CROSS_COMPILE=' --no-print-directory
'HOSTSTRIP=true' 'DEV_TREE_SRC=--default' 'QEMU_ARCH=' -s
'CROS_FULL=1' 'O=/tmp/b/sandbox_spl' 'BUILD_ROM=1'
output: 'drivers/core/device-remove.o: In function `dev_power_domain_on':
multiple definition of `dev_power_domain_on'
first defined here
recipe for target 'drivers/core/built-in.o' failed
make[3]: *** [drivers/core/built-in.o] Error 1
recipe for target 'drivers/core' failed
make[2]: *** [drivers/core] Error 2
make[2]: *** Waiting for unfinished jobs....
recipe for target 'drivers' failed
make[1]: *** [drivers] Error 2
make[1]: *** Waiting for unfinished jobs....
Makefile:148: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2


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