From 8941fe4985a1cc8f800be00224c6a2e741789d03 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Thu, 18 Feb 2016 15:28:14 +0000 Subject: [PATCH 156/156] BCM270X_DT: at86rf233 overlay - drop to 3MHz The consensus is that 6MHz is too fast, but that 3MHz is OK. See: https://github.com/raspberrypi/linux/issues/1294 https://github.com/raspberrypi/linux/issues/1151 --- arch/arm/boot/dts/overlays/README | 2 +- arch/arm/boot/dts/overlays/at86rf233-overlay.dts | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -188,7 +188,7 @@ Load: dtoverlay=at86rf233,=; /* active high */ reset-gpio = <&gpio 24 1>; sleep-gpio = <&gpio 25 1>; - spi-max-frequency = <6000000>; + spi-max-frequency = <3000000>; xtal-trim = /bits/ 8 <0xf>; }; };