From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Lechner Subject: [PATCH 3/3] ARM: da850: Add ti,da830-uart compatible for serial ports Date: Tue, 20 Dec 2016 14:23:04 -0600 Message-ID: <1482265384-715-4-git-send-email-david@lechnology.com> References: <1482265384-715-1-git-send-email-david@lechnology.com> Return-path: In-Reply-To: <1482265384-715-1-git-send-email-david@lechnology.com> Sender: linux-kernel-owner@vger.kernel.org To: Greg Kroah-Hartman , Rob Herring , Mark Rutland Cc: David Lechner , Sekhar Nori , Kevin Hilman , Axel Haslam , Alexandre Bailon , Bartosz Golaszewski , Jiri Slaby , linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org TI DA8xx/OMAPL13x/AM17xx/AM18xx SoCs have extra UART registers beyond the standard 8250 registers, so we need a new compatible string to indicate this. Also, at least one of these registers uses the full 32 bits, so we need to specify reg-io-width in addition to reg-shift. "ns16550a" is left in the compatible specification since it does work as long as the bootloader configures the SoC UART power management registers. Signed-off-by: David Lechner --- arch/arm/boot/dts/da850.dtsi | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi index 104155d..f6cd212 100644 --- a/arch/arm/boot/dts/da850.dtsi +++ b/arch/arm/boot/dts/da850.dtsi @@ -266,22 +266,25 @@ interrupt-names = "edm3_tcerrint"; }; serial0: serial@42000 { - compatible = "ns16550a"; + compatible = "ti,da830-uart", "ns16550a"; reg = <0x42000 0x100>; + reg-io-width = <4>; reg-shift = <2>; interrupts = <25>; status = "disabled"; }; serial1: serial@10c000 { - compatible = "ns16550a"; + compatible = "ti,da830-uart", "ns16550a"; reg = <0x10c000 0x100>; + reg-io-width = <4>; reg-shift = <2>; interrupts = <53>; status = "disabled"; }; serial2: serial@10d000 { - compatible = "ns16550a"; + compatible = "ti,da830-uart", "ns16550a"; reg = <0x10d000 0x100>; + reg-io-width = <4>; reg-shift = <2>; interrupts = <61>; status = "disabled"; -- 2.7.4