target/linux/bcm27xx/patches-5.4/950-0962-ARM-dts-Limit-BT-modem-baud-rate-on-3B.patch

   1 From 27f210c863d3349d41e366fb7573e9dcc0708e3d Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Fri, 4 Sep 2020 09:04:29 +0100
   4 Subject: [PATCH] ARM: dts: Limit BT modem baud rate on 3B
   5
   6 The 3B doesn't have the flow control signals connected to the BT modem,
   7 which limits the maximum usable baud rate to below 1 Mbaud. Use
   8 921600 as a relatively safe default value, but the krnbt_baudrate
   9 parameter can still override it.
  10
  11 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  12 ---
  13  arch/arm/boot/dts/bcm2710-rpi-3-b.dts | 4 ++++
  14  1 file changed, 4 insertions(+)
  15
  16 --- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
  17 +++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
  18 @@ -117,6 +117,10 @@
  19         status = "okay";
  20  };
  21
  22 +&bt {
  23 +       max-speed = <921600>;
  24 +};
  25 +
  26  &spi0 {
  27         pinctrl-names = "default";
  28         pinctrl-0 = <&spi0_pins &spi0_cs_pins>;