[PATCH v2 0/4] add reboot mode driver

Caesar Wang
2016-01-13T02:17:35Z

Hi ,

? 2016?01?12? 19:27, Andy Yan ??:
> This driver parse the reboot commands like "reboot loader"
> and "reboot recovery" to get a boot mode described in the
> device tree , then call the corresponding write interface
> to store the boot mode magic value in some persistent storage
> like special register or ram , which can be read by the bootloader
> after system reboot.
>
> This is commonly used on Android based devices, which in order
> to reboot the device into fastboot or recovery mode.
>
> Before this patch , I have try some hack on[0], and then found
> John Stultz also doing the same work[1].
>
> As John is busy these days, I go on with this work.
>
> [0]https://patchwork.kernel.org/patch/7647751/
> [1]https://patchwork.kernel.org/patch/7802391/
>
> Changes in v2:
> - move to dir drivers/power/reset/
> - make syscon-reboot-mode a generic driver
> - make this DT node as a subnode of PMU/PMUGRF
>
> Changes in v1:
> - fix the embarrassed compile warning
> - correct the maskrom magic number
> - check for the normal reboot
> - correct the maskrom magic number
> - use macro defined in rockchip_boot-mode.h for reboot-mode DT node
>
> Andy Yan (4):
> dt-bindings: power: reset: add document for reboot-mode driver
> power: reset: add reboot mode driver
> ARM: dts: rockchip: add syscon-reboot-mode node
> ARM64: dts: rockchip: add syscon-reboot-mode DT node

This series patches are verified by my github based on kernel 4.4 release.
https://github.com/Caesar-github/rockchip/commits/kylin-develop4.4

reboot loader, reboot recovery, reboot fastboot..... these are okay for
rk3288, rk3368. rk3036 Socs on my hand board.
(Note: the loader need that jeffy send patches to support uboot on
upstream, that's also okay if you are using the RK loader from Rockchip)

I just send the patch to support the rk3036 dts.
<https://patchwork.kernel.org/patch/8021581/>

So feel free add my test tags:

Tested-by: Caesar Wang <wxt@rock-chips.com>

>
> .../bindings/power/reset/reboot-mode.txt | 41 +++++++++
> .../bindings/power/reset/syscon-reboot-mode.txt | 52 +++++++++++
> arch/arm/boot/dts/rk3288.dtsi | 31 +++++++
> arch/arm/boot/dts/rk3xxx.dtsi | 33 ++++++-
> arch/arm64/boot/dts/rockchip/rk3368.dtsi | 33 ++++++-
> drivers/power/reset/Kconfig | 16 ++++
> drivers/power/reset/Makefile | 2 +
> drivers/power/reset/reboot-mode.c | 100 +++++++++++++++++++++
> drivers/power/reset/reboot-mode.h | 6 ++
> drivers/power/reset/syscon-reboot-mode.c | 62 +++++++++++++
> include/dt-bindings/soc/rockchip_boot-mode.h | 30 +++++++
> 11 files changed, 404 insertions(+), 2 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/power/reset/reboot-mode.txt
> create mode 100644 Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt
> create mode 100644 drivers/power/reset/reboot-mode.c
> create mode 100644 drivers/power/reset/reboot-mode.h
> create mode 100644 drivers/power/reset/syscon-reboot-mode.c
> create mode 100644 include/dt-bindings/soc/rockchip_boot-mode.h
>

--
Thanks,
Caesar