openwrtv3/target/linux/brcm2708/patches-4.4/0554-BCM270X_DT-Update-UART0-clock-frequency.patch
Álvaro Fernández Rojas dab5a44067 brcm2708: update linux 4.4 patches to latest version
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As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2017-02-06 22:24:42 +01:00

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977 B
Diff

From 86533bf4f40251f9468a4f48775aa2cf1a37d6b7 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Sun, 27 Nov 2016 21:45:55 +0000
Subject: [PATCH] BCM270X_DT: Update UART0 clock-frequency
The Raspberry Pi firmware now sets the UART0 clock frequency to
48MHz (was 3MHz), to allow for baudrates up to 3MHz. This value
is overwritten by the firmware, but alternative loaders such
as U-Boot ignore the firmware-provided DTB. And besides, the
default ought to be correct.
See: https://github.com/raspberrypi/linux/issues/1732
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/boot/dts/bcm2708_common.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/boot/dts/bcm2708_common.dtsi
+++ b/arch/arm/boot/dts/bcm2708_common.dtsi
@@ -456,7 +456,7 @@
reg = <2>;
#clock-cells = <0>;
clock-output-names = "uart0_pclk";
- clock-frequency = <3000000>;
+ clock-frequency = <48000000>;
};
clk_apb_p: clock@3 {