From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Wed, 14 Dec 2016 09:55:47 +0100 Subject: [PATCH linux v1 4/4] arm: dts: Add dt-binding to support seven segment display on zaius In-Reply-To: <1481702104-8617-5-git-send-email-jaghu@google.com> References: <1481702104-8617-1-git-send-email-jaghu@google.com> <1481702104-8617-5-git-send-email-jaghu@google.com> Message-ID: <3917905.e4iOqADnVQ@wuerfel> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tuesday, December 13, 2016 11:55:04 PM CET Jaghathiswari Rankappagounder Natarajan wrote: > Add clock, data and clear signal GPIO lines to control seven segment display on > zaius platform. > > Signed-off-by: Jaghathiswari Rankappagounder Natarajan > --- > arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts b/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts > index 8ef4ece..ccb8147 100644 > --- a/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts > +++ b/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts > @@ -43,6 +43,14 @@ > gpios = <&gpio ASPEED_GPIO(H, 7) GPIO_ACTIVE_LOW>; > }; > }; > + > + seven-seg-disp { > + compatible = "seven-seg-gpio-dev"; > + refresh-interval-ms = "1000"; > + clock-gpios = <&gpio ASPEED_GPIO(J, 0) GPIO_ACTIVE_HIGH>; > + data-gpios = <&gpio ASPEED_GPIO(J, 2) GPIO_ACTIVE_HIGH>; > + clear-gpios = <&gpio ASPEED_GPIO(J, 1) GPIO_ACTIVE_HIGH>; > + }; > }; According to your introductory mail, the interface is assumed to be a 74HC164. Should we use that ID in the compatible string? We can always add other strings later if we want to support multiple wire formats. Arnd