From mboxrd@z Thu Jan 1 00:00:00 1970 From: robh@kernel.org (Rob Herring) Date: Mon, 23 Oct 2017 17:46:25 -0500 Subject: [PATCH 2/4] dt-bindings: display: amlogic, meson-dw-hdmi: Add optional HDMI 5V regulator In-Reply-To: <1508227664-11171-3-git-send-email-narmstrong@baylibre.com> References: <1508227664-11171-1-git-send-email-narmstrong@baylibre.com> <1508227664-11171-3-git-send-email-narmstrong@baylibre.com> Message-ID: <20171023224625.oiswnpgmxzhg7aep@rob-hp-laptop> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Oct 17, 2017 at 10:07:42AM +0200, Neil Armstrong wrote: > On reference boards and derivatives, the HDMI Logic is powered by an external > 5V regulator. > This regulator was set by the Vendor U-Boot, add optional support for it. > > Signed-off-by: Neil Armstrong > --- > Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt b/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt > index 7f040ed..bf4a180 100644 > --- a/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt > +++ b/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt > @@ -48,6 +48,10 @@ Required properties: > Documentation/devicetree/bindings/reset/reset.txt, > the reset-names should be "hdmitx_apb", "hdmitx", "hdmitx_phy" > > +Optional properties: > +- hdmi-supply: Optional phandle to an external 5V regulator to power the HDMI > + logic, as described in the file ../regulator/regulator.txt 5V into a modern SoC sounds strange. Is this really for the chip or for 5V to the connector? The latter should be in the connector node. Rob