[RFC v2 4/6] drivers: boot_constraint: Add debugfs support

Viresh Kumar viresh.kumar at linaro.org
Wed Jul 12 00:18:02 PDT 2017


On 12-07-17, 12:04, Viresh Kumar wrote:
> This patch adds debugfs support for boot constraints. This is how it
> looks for a "vmmc-supply" constraint for the MMC device.
> 
> $ ls -R /sys/kernel/debug/boot_constraints/
> /sys/kernel/debug/boot_constraints/:
> f723d000.dwmmc0
> 
> /sys/kernel/debug/boot_constraints/f723d000.dwmmc0:
> supply-vmmc
> 
> /sys/kernel/debug/boot_constraints/f723d000.dwmmc0/supply-vmmc:
> u_volt_max  u_volt_min
> 
> Signed-off-by: Viresh Kumar <viresh.kumar at linaro.org>
> ---
>  drivers/base/boot_constraint.c | 80 ++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 80 insertions(+)

Forgot to mention that this one depends on
https://marc.info/?l=linux-kernel&m=149870936319587 for compilation
without CONFIG_DEBUG_FS.

--
viresh



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