linux-kernel - Re: [PATCH v2 1/2] rtc: sun6i: Make external 32k oscillator optional

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Message-ID: <20200312232046.GB3384@piout.net>
Date:   Fri, 13 Mar 2020 00:20:46 +0100
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Jernej Skrabec <jernej.skrabec@...l.net>
Cc:     mripard@...nel.org, wens@...e.org, robh+dt@...nel.org,
        a.zummo@...ertech.it, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rtc@...r.kernel.org
Subject: Re: [PATCH v2 1/2] rtc: sun6i: Make external 32k oscillator optional

On 08/03/2020 14:58:48+0100, Jernej Skrabec wrote:
> Some boards, like OrangePi PC2 (H5), OrangePi Plus 2E (H3) and Tanix TX6
> (H6) don't have external 32kHz oscillator. Till H6, it didn't really
> matter if external oscillator was enabled because HW detected error and
> fall back to internal one. H6 has same functionality but it's the first
> SoC which have "auto switch bypass" bit documented and always enabled in
> driver. This prevents RTC to work correctly if external crystal is not
> present on board. There are other side effects - all peripherals which
> depends on this clock also don't work (HDMI CEC for example).
> 
> Make clocks property optional. If it is present, select external
> oscillator. If not, stay on internal.
> 
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>
> ---
>  drivers/rtc/rtc-sun6i.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
Applied, thanks.

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com