target/linux/brcm2708/patches-4.4/0554-BCM270X_DT-Update-UART0-clock-frequency.patch

   1 From 70af0eca2c4a2a80a8edd6ce4c4c7a9eac038893 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Sun, 27 Nov 2016 21:45:55 +0000
   4 Subject: [PATCH] BCM270X_DT: Update UART0 clock-frequency
   5
   6 The Raspberry Pi firmware now sets the UART0 clock frequency to
   7 48MHz (was 3MHz), to allow for baudrates up to 3MHz. This value
   8 is overwritten by the firmware, but alternative loaders such
   9 as U-Boot ignore the firmware-provided DTB. And besides, the
  10 default ought to be correct.
  11
  12 See: https://github.com/raspberrypi/linux/issues/1732
  13
  14 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  15 ---
  16  arch/arm/boot/dts/bcm2708_common.dtsi | 2 +-
  17  1 file changed, 1 insertion(+), 1 deletion(-)
  18
  19 diff --git a/arch/arm/boot/dts/bcm2708_common.dtsi b/arch/arm/boot/dts/bcm2708_common.dtsi
  20 index c449493..a9fd97e 100644
  21 --- a/arch/arm/boot/dts/bcm2708_common.dtsi
  22 +++ b/arch/arm/boot/dts/bcm2708_common.dtsi
  23 @@ -456,7 +456,7 @@
  24                         reg = <2>;
  25                         #clock-cells = <0>;
  26                         clock-output-names = "uart0_pclk";
  27 -                       clock-frequency = <3000000>;
  28 +                       clock-frequency = <48000000>;
  29                 };
  30
  31                 clk_apb_p: clock@3 {
  32 --
  33 2.1.4
  34