From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nishanth Menon Subject: [PATCH 1/2] dt-bindings: serial: 8250_omap: Add compatible for AM654 UART controller Date: Tue, 19 Jun 2018 14:44:49 -0500 Message-ID: <20180619194450.6353-2-nm@ti.com> References: <20180619194450.6353-1-nm@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20180619194450.6353-1-nm@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: Mark Rutland , Rob Herring , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-serial@vger.kernel.org, Nishanth Menon , Tony Lindgren , Tero Kristo , Vignesh R , Jiri Slaby , Sekhar Nori List-Id: linux-serial@vger.kernel.org AM654 uses a UART controller that is only partially compatible with existing 8250 UART. UART DMA integration is substantially different and even a match against standard 8250 or omap4 would result in non-working UART once DMA is enabled by default. Introduce a specific compatible to help build up the differences in follow on patches. Cc: Sekhar Nori Cc: Vignesh R Signed-off-by: Nishanth Menon --- Changes since RFC: * DT binding has been split out as it's own patch and commit message elaborated RFC: https://patchwork.kernel.org/patch/10447641/ Documentation/devicetree/bindings/serial/omap_serial.txt | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/serial/omap_serial.txt b/Documentation/devicetree/bindings/serial/omap_serial.txt index 4b0f05adb228..c35d5ece1156 100644 --- a/Documentation/devicetree/bindings/serial/omap_serial.txt +++ b/Documentation/devicetree/bindings/serial/omap_serial.txt @@ -1,6 +1,7 @@ OMAP UART controller Required properties: +- compatible : should be "ti,am654-uart" for AM654 controllers - compatible : should be "ti,omap2-uart" for OMAP2 controllers - compatible : should be "ti,omap3-uart" for OMAP3 controllers - compatible : should be "ti,omap4-uart" for OMAP4 controllers -- 2.15.1