Re: [PATCH V2 0/4] Add i.MX8QXP system controller watchdog support

[Guenter Roeck]

On 2/17/19 6:01 PM, Anson Huang wrote:
> i.MX8QXP is an ARMv8 Cortex-A35 SoC with a Cortex-M4 system controller inside,
> the system controller manages overall power, clock, secure RTC and watchdog
> etc., so Linux kernel running on A35 needs to communicate with system
> controller for watchdog operation, this system controller watchdog will
> call SMC to trap to EL3 secure world ARM-Trusted-Firmware and then it will
> request system controller to do the watchdog operation via IPC.
And you expect I'll spend the time comparing this version of the patch
series against version 1 and figure out myself what exactly changed ?

Guenter

Below are the patch dependency:
> The dt-binding and imx8qxp.dtsi patch are based on my thermal patch series as below:
> https://patchwork.kernel.org/patch/10800699/
>
> Anson Huang (4):
>    dt-bindings: fsl: scu: add watchdog binding
>    watchdog: imx_sc: Add i.MX system controller watchdog support
>    arm64: defconfig: add support for i.MX system controller watchdog
>    arm64: dts: freescale: imx8qxp: add watchdog support
>
>   .../devicetree/bindings/arm/freescale/fsl,scu.txt  |  10 +
>   arch/arm64/boot/dts/freescale/imx8qxp.dtsi         |   4 +
>   arch/arm64/configs/defconfig                       |   1 +
>   drivers/watchdog/Kconfig                           |  13 ++
>   drivers/watchdog/Makefile                          |   1 +
>   drivers/watchdog/imx_sc_wdt.c                      | 210 +++++++++++++++++++++
>   6 files changed, 239 insertions(+)
>   create mode 100644 drivers/watchdog/imx_sc_wdt.c