On 15/12/15 15:55, Eric Anholt wrote: > Florian Fainelli <f.fainelli@xxxxxxxxx> writes: > >> On 15/12/15 13:40, Eric Anholt wrote: >>> From: Alexander Aring <alex.aring@xxxxxxxxx> >>> >>> This patch adds support for several power domains on Raspberry Pi, >>> including USB (so it can be enabled even if the bootloader didn't do >>> it), and graphics. >>> >>> This patch is the combined work of Eric Anholt (who wrote USB support >>> inside of the Raspberry Pi firmware driver, and wrote the non-USB >>> domain support) and Alexander Aring (who separated the original USB >>> work out from the firmware driver). >>> >>> Signed-off-by: Alexander Aring <alex.aring@xxxxxxxxx> >>> Signed-off-by: Eric Anholt <eric@xxxxxxxxxx> >>> --- >>> >>> v2: Add support for power domains other than USB, using the new >>> firmware interface, reword commit message (changes by Eric) >>> >>> v3: Restructure as a builtin driver, and drop >>> of_genpd_add_provider_onecell error handling to avoid >>> pm_genpd_exit() dependency until that API can be settled. Clean >>> up copyright header, add missing ISP initialization, and fix typo >>> in transposer's name. >>> >>> arch/arm/mach-bcm/Kconfig | 10 ++ >>> arch/arm/mach-bcm/Makefile | 1 + >>> arch/arm/mach-bcm/raspberrypi-power.c | 247 ++++++++++++++++++++++++++++ >>> include/dt-bindings/arm/raspberrypi-power.h | 41 +++++ >>> 4 files changed, 299 insertions(+) >>> create mode 100644 arch/arm/mach-bcm/raspberrypi-power.c >> >> What motivated the location of this power domain driver in >> arch/arm/mach-bcm? Should not we have this in drivers/power/ or >> somewhere in drivers/ at the very least? > > ls stronly suggests that power contains drivers for power supplies and > batteries, not power domains. There are 6 power domain drivers in > arch/arm, 3 in drivers/clk, and 3 in drivers/soc. If we ever have to support a different architecture which happens to use a similar power domain, then we want it to be in a location which makes it easy for sharing it in the first place. As it stands today, it does not seem useful to me to have this code in arch/arm/mach-bcm/ at all. Maybe there is room from a drivers/power/domains/ of some kind? -- Florian -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
