Hi,
On Wed, May 15, 2019 at 10:47:14AM +0000, Han Nandor wrote:
> Description
> -----------
> Extend the reboot mode driver to use a NVMEM cell as writing interface.
>
> Testing
> -------
> The testing is done by configuring DT from a custom board.
> The NVMEM cell is configured in an RTC non-volatile memory.
> Kernel: 4.14.60 (the patchset was rebased on kernel master)
>
> DT configurations:
> `
> ...
> reboot-mode-nvmem@0 {
> compatible = "simple-mfd";
> reboot-mode {
> compatible = "nvmem-reboot-mode";
> nvmem-cells = <&reboot_mode>;
> nvmem-cell-names = "reboot-mode";
>
> mode-test = <0x21969147>;
> };
> };
> ...
> reboot_mode: nvmem_reboot_mode@0 {
> reg = <0x00 0x4>;
> };
> ...
> `
>
> 1. Reboot the system using the command `reboot test`
>
> 2. Verify that kernel logs show that reboot was done in mode `test`:
> PASS
> `[ 413.957172] reboot: Restarting system with command 'test' `
>
> 3. Stop in U-Boot and verify that mode `test` magic value is present
> in RTCs non-volatile memory: PASS
>
> Kernel: 5.1.0-rc3
>
> 1. Configure `arch/arm/configs/imx_v6_v7_defconfig` to contain
> `CONFIG_NVMEM_REBOOT_MODE=y`
> 2. Verify that Kernel compiles successful: PASS
> `
> make ARCH=arm CROSS_COMPILE=arm-linux-gnu- imx_v6_v7_defconfig zImage
> ...
> CC drivers/power/reset/nvmem-reboot-mode.o
> ...
> Kernel: arch/arm/boot/zImage is ready
> `
> Changes since v1:
> -----------------
> - split the documentation on a separate patch
> - add a missing header
>
> Changes since v2:
> ----------------
> - change the module license to GPL since GPL v2 is deprecated
>
> Changes since v3:
> ----------------
> - documentation updated according to the comments
Thanks, queued. Please fix your git/mail setup, I had to fix the
line endings (\r\n -> \n) to apply this.
-- Sebastian
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