[PATCH 1/4] gpio/rockchip: extended debounce support is only available on v2

Linus Walleij linus.walleij at linaro.org
Fri Sep 17 15:34:45 PDT 2021

On Tue, Sep 14, 2021 at 12:49 AM Heiko Stuebner <heiko at sntech.de> wrote:

> The gpio driver runs into issues on v1 gpio blocks, as the db_clk
> and the whole extended debounce support is only ever defined on v2.
> So checking for the IS_ERR on the db_clk is not enough, as it will
> be NULL on v1.
> Fix this by adding the needed condition for v2 first before checking
> the existence of the db_clk.
> This caused my rk3288-veyron-pinky to enter a reboot loop when it
> tried to enable the power-key as adc-key device.
> Fixes: 3bcbd1a85b68 ("gpio/rockchip: support next version gpio controller")
> Signed-off-by: Heiko Stuebner <heiko at sntech.de>

Reviewed-by: Linus Walleij <linus.walleij at linaro.org>
This can be applied by Bartosz to the GPIO subsystem.

Linus Walleij

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