* [PATCH] arm64: dts: imx8mm-beacon-som: Fix Choppy BT audio
@ 2020-10-07 13:02 Adam Ford
2020-10-30 7:57 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Adam Ford @ 2020-10-07 13:02 UTC (permalink / raw)
To: linux-arm-kernel
Cc: devicetree, Fabio Estevam, Adam Ford, Sascha Hauer, aford,
linux-kernel, Rob Herring, NXP Linux Team,
Pengutronix Kernel Team, Shawn Guo
When streaming bluetooth audio, the sound is choppy due to the
fact that the default baud rate of the HCI interface is too slow
to handle 16-bit stereo at 48KHz.
The Bluetooth chip is capable of up to 4M baud on the serial port,
so this patch sets the max-speed to 4000000 in order to properly
stream audio over the Bluetooth.
Fixes: 593816fa2f35 ("arm64: dts: imx: Add Beacon i.MX8m-Mini development kit")
Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
index 55b36bddd513..b88c3c99b007 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
@@ -211,6 +211,7 @@ bluetooth {
host-wakeup-gpios = <&gpio2 8 GPIO_ACTIVE_HIGH>;
device-wakeup-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>;
clocks = <&osc_32k>;
+ max-speed = <4000000>;
clock-names = "extclk";
};
};
--
2.25.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] arm64: dts: imx8mm-beacon-som: Fix Choppy BT audio
2020-10-07 13:02 [PATCH] arm64: dts: imx8mm-beacon-som: Fix Choppy BT audio Adam Ford
@ 2020-10-30 7:57 ` Shawn Guo
0 siblings, 0 replies; 2+ messages in thread
From: Shawn Guo @ 2020-10-30 7:57 UTC (permalink / raw)
To: Adam Ford
Cc: devicetree, Sascha Hauer, aford, linux-kernel, Rob Herring,
NXP Linux Team, Pengutronix Kernel Team, Fabio Estevam,
linux-arm-kernel
On Wed, Oct 07, 2020 at 08:02:37AM -0500, Adam Ford wrote:
> When streaming bluetooth audio, the sound is choppy due to the
> fact that the default baud rate of the HCI interface is too slow
> to handle 16-bit stereo at 48KHz.
>
> The Bluetooth chip is capable of up to 4M baud on the serial port,
> so this patch sets the max-speed to 4000000 in order to properly
> stream audio over the Bluetooth.
>
> Fixes: 593816fa2f35 ("arm64: dts: imx: Add Beacon i.MX8m-Mini development kit")
>
> Signed-off-by: Adam Ford <aford173@gmail.com>
Applied, thanks.
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linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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