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| author | Lee Jones <lee.jones@linaro.org> | 2019-06-10 10:42:09 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-06-12 09:14:00 +0200 |
| commit | a229105d7a1ee1f9e078afe44497cab482a8aba8 (patch) | |
| tree | 712c97f0757b0f4f9d118b32ce63c154de4cd649 /Documentation | |
| parent | pinctrl: msm: Add ability for drivers to supply a reserved GPIO list (diff) | |
| download | linux-a229105d7a1ee1f9e078afe44497cab482a8aba8.tar.xz linux-a229105d7a1ee1f9e078afe44497cab482a8aba8.zip | |
pinctrl: qcom: sdm845: Provide ACPI support
This patch provides basic support for booting with ACPI instead
of the currently supported Device Tree. When doing so there are a
couple of differences which we need to taken into consideration.
Firstly, the SDM850 ACPI tables omit information pertaining to the
4 reserved GPIOs on the platform. If Linux attempts to touch/
initialise any of these lines, the firmware will restart the
platform.
Secondly, when booting with ACPI, it is expected that the firmware
will set-up things like; Regulators, Clocks, Pin Functions, etc in
their ideal configuration. Thus, the possible Pin Functions
available to this platform are not advertised when providing the
higher GPIOD/Pinctrl APIs with pin information.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions