[PATCH 2/3] clk: rockchip: add a dummy clock for the watchdog pclk on rk3288

Doug Anderson dianders at chromium.org
Wed Jan 21 15:30:13 PST 2015


On Wed, Jan 21, 2015 at 11:56 AM, Heiko Stübner <heiko at sntech.de> wrote:
> The pclk supplying the watchdog is controlled via the SGRF register area.
> Currently we don't have any clock-type handling external clock bits like
> this one. Additionally the SGRF isn't even writable in every boot mode.
> But still the clock control is available and in the future someone might
> want to use it. Therefore define a simple clock for the time being so
> that the watchdog driver can read its rate.
> Signed-off-by: Heiko Stuebner <heiko at sntech.de>
> ---
>  drivers/clk/rockchip/clk-rk3288.c | 8 ++++++++
>  1 file changed, 8 insertions(+)

Reviewed-by: Doug Anderson <dianders at chromium.org>

On rk3288 on a 3.14 kernel with backports, I tested this and confirmed
that the clock rate was right (when programmed to ~43 seconds, the
watchdog caused a reboot when not patted for ~43 seconds).

Tested-by: Doug Anderson <dianders at chromium.org>

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