From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Stuebner Subject: Re: [PATCH v3 4/4] arm64: dts: rockchip: add regulator info for Kevin digitizer Date: Thu, 23 Mar 2017 00:57:26 +0100 Message-ID: <2959157.AbEJJVO0Z2@phil> References: <20170320235344.126298-1-briannorris@chromium.org> <20415662.PctC9IM4SC@phil> <20170322181441.GC98450@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Return-path: In-Reply-To: <20170322181441.GC98450-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Brian Norris Cc: linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Caesar Wang , Doug Anderson , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Rob Herring , Stephen Barber , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Chris Zhong , Dmitry Torokhov List-Id: devicetree@vger.kernel.org Am Mittwoch, 22. März 2017, 11:14:42 CET schrieb Brian Norris: > On Wed, Mar 22, 2017 at 09:26:41AM +0100, Heiko Stuebner wrote: > > Am Montag, 20. März 2017, 16:53:44 CET schrieb Brian Norris: > > > We need to enable this regulator before the digitizer can be used. Wacom > > > recommended waiting for 100 ms before talking to the HID. > > > > > > Signed-off-by: Brian Norris > > > --- > > > v3: > > > * reintroduced into patch set; bindings are in linux-next > > > --- > > > arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts | 3 +++ > > > 1 file changed, 3 insertions(+) > > > > > > diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts > > > b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts index > > > 2f720cf2fd07..f4714c4606f3 100644 > > > --- a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts > > > +++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts > > > @@ -232,6 +232,9 @@ ap_i2c_dig: &i2c2 { > > > > according to the hid-over-i2c binding, this should use a special compatible > > like > > > > compatible = "wacom,w9013", "hid-over-i2c" > > > > As the binding patch is from Caesar, I assume that is the Kevin component and > > I can add that myself, just need confirmation that this is actually the correct > > component :-) . > > *Sigh.* The I2C (and SPI) framework is still broken w.r.t. multiple > compatible strings and drivers built as modules [1]. So I'd really > rather not do this... It seems I had repressed that knowledge :-), but now that you mention it, I remember seeing (or reading about) this issue before. So yes I agree as well :-) > ...but yes, that's a fair component description. I've applied the patch and simply added the wacom,w9013 as comment, so it doesn't get lost. Now this can simmer a bit in linux-next till the weekend. Heiko > [1] Some discussion about SPI: > https://patchwork.kernel.org/patch/7630571/ > And the discussion about I2C (25% through that thread): > https://patchwork.kernel.org/patch/9455245/ > > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html