From mboxrd@z Thu Jan 1 00:00:00 1970 From: nm@ti.com (Nishanth Menon) Date: Tue, 5 Jun 2018 01:01:22 -0500 Subject: [RFC PATCH 3/6] serial: 8250_omap: Add support for AM654 UART controller In-Reply-To: <20180605060125.9518-1-nm@ti.com> References: <20180605060125.9518-1-nm@ti.com> Message-ID: <20180605060125.9518-4-nm@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org AM654 uses a UART controller that is compatible (partially) with existing 8250 UART, however, has a few differences with respect to DMA support and control paths. Introduce a base definition that allows us to build up the differences in follow on patches. Cc: Sekhar Nori Cc: Vignesh R Signed-off-by: Nishanth Menon --- Documentation/devicetree/bindings/serial/omap_serial.txt | 1 + drivers/tty/serial/8250/8250_omap.c | 1 + 2 files changed, 2 insertions(+) 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 diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index 1b337fee07ed..a019286f8bb6 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -1115,6 +1115,7 @@ static const u8 am3352_habit = OMAP_DMA_TX_KICK | UART_ERRATA_CLOCK_DISABLE; static const u8 dra742_habit = UART_ERRATA_CLOCK_DISABLE; static const struct of_device_id omap8250_dt_ids[] = { + { .compatible = "ti,am654-uart" }, { .compatible = "ti,omap2-uart" }, { .compatible = "ti,omap3-uart" }, { .compatible = "ti,omap4-uart", .data = &omap4_habit, }, -- 2.15.1