The default serial driver for omap2plus is the 8250_omap driver.
Unfortunately, this driver does not yet appear to have fully
functional DMA on OMAP3630/DM3730 which causes some timeouts and
frame errors.
This patch removes the DMA entry from the device tree which allow
the UART to operate without Bluetooth frame errors. If/when DMA
is working on OMAP3630, this should be reverted.
Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
diff --git a/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts b/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts
index c34ba0ef8b4d..79d56bc14e88 100644
--- a/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts
+++ b/arch/arm/boot/dts/logicpd-torpedo-37xx-devkit.dts
@@ -51,6 +51,7 @@
};
&uart2 {
+ /delete-property/dma-names;
bluetooth {
compatible = "ti,wl1283-st";
enable-gpios = <&gpio6 2 GPIO_ACTIVE_HIGH>; /* gpio 162 */
--
2.17.1
