On 06/12/2019 6:45 pm, Anand Moon wrote:
Most of the RK3399 SBC boards do not perform clean
shutdown and clean reboot.
FWIW reboot problems on RK3399 have been tracked down to issues in
upstream ATF, and are unrelated to the PMIC.
These patches try to help resolve the issue with proper
shutdown by turning off the PMIC.
As mentioned elsewhere[1], although this is what the BSP kernel seems to
do, and in practice it's unlikely to matter for the majority of devboard
users like you and me, I still feel a bit uncomfortable with this
solution for systems using ATF as in principle the secure world might
want to know about orderly shutdowns, and this effectively makes every
shutdown an unexpected power loss from secure software's point of view.
Robin.
[1]
http://lists.infradead.org/pipermail/linux-rockchip/2019-December/028183.html
For reference
RK805 PMCI data sheet:
[0] http://rockchip.fr/RK805%20datasheet%20V1.3.pdf
RK808 PMIC data sheet:
[1] http://rockchip.fr/RK808%20datasheet%20V1.4.pdf
RK817 PMIC data sheet:
[2] http://rockchip.fr/RK817%20datasheet%20V1.01.pdf
RK818 PMIC data sheet:
[3] http://rockchip.fr/RK818%20datasheet%20V1.0.pdf
Reboot issue:
My guess is that we need to some proper sequence of
setting to PMCI to perform clean.
If you have any input please share them.
Tested on SBC
Rock960 Model A
Odroid N1
Rock64
-Anand Moon
Anand Moon (8):
mfd: rk808: Refactor shutdown functions
mfd: rk808: use syscore for RK805 PMIC shutdown
mfd: rk808: use syscore for RK808 PMIC shutdown
mfd: rk808: use syscore for RK818 PMIC shutdown
mfd: rk808: cleanup unused function pointer
mfd: rk808: use common syscore for all PMCI for clean shutdown
arm64: rockchip: drop unused field from rk8xx i2c node
arm: rockchip: drop unused field from rk8xx i2c node
arch/arm/boot/dts/rk3036-kylin.dts | 1 -
arch/arm/boot/dts/rk3188-px3-evb.dts | 1 -
arch/arm/boot/dts/rk3288-evb-rk808.dts | 1 -
arch/arm/boot/dts/rk3288-phycore-som.dtsi | 1 -
arch/arm/boot/dts/rk3288-popmetal.dts | 1 -
arch/arm/boot/dts/rk3288-tinker.dtsi | 1 -
arch/arm/boot/dts/rk3288-veyron.dtsi | 1 -
arch/arm/boot/dts/rk3288-vyasa.dts | 1 -
arch/arm/boot/dts/rv1108-elgin-r1.dts | 1 -
arch/arm/boot/dts/rv1108-evb.dts | 1 -
arch/arm64/boot/dts/rockchip/px30-evb.dts | 1 -
arch/arm64/boot/dts/rockchip/rk3328-a1.dts | 1 -
arch/arm64/boot/dts/rockchip/rk3328-evb.dts | 1 -
.../arm64/boot/dts/rockchip/rk3328-roc-cc.dts | 1 -
.../arm64/boot/dts/rockchip/rk3328-rock64.dts | 1 -
.../boot/dts/rockchip/rk3368-geekbox.dts | 1 -
arch/arm64/boot/dts/rockchip/rk3368-lion.dtsi | 1 -
.../boot/dts/rockchip/rk3368-px5-evb.dts | 1 -
.../boot/dts/rockchip/rk3399-firefly.dts | 1 -
.../boot/dts/rockchip/rk3399-hugsun-x99.dts | 1 -
.../boot/dts/rockchip/rk3399-khadas-edge.dtsi | 1 -
.../boot/dts/rockchip/rk3399-leez-p710.dts | 1 -
.../boot/dts/rockchip/rk3399-nanopi4.dtsi | 1 -
.../boot/dts/rockchip/rk3399-orangepi.dts | 1 -
arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi | 1 -
.../boot/dts/rockchip/rk3399-roc-pc.dtsi | 1 -
.../boot/dts/rockchip/rk3399-rock-pi-4.dts | 1 -
.../boot/dts/rockchip/rk3399-rock960.dtsi | 1 -
.../boot/dts/rockchip/rk3399-rockpro64.dts | 1 -
.../boot/dts/rockchip/rk3399-sapphire.dtsi | 1 -
drivers/mfd/rk808.c | 144 +++++-------------
include/linux/mfd/rk808.h | 2 -
32 files changed, 42 insertions(+), 134 deletions(-)
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