From: Uwe Kleine-König Date: Tue, 18 Jul 2017 10:59:41 +0000 (+0200) Subject: dt-bindings: serial/rs485: make rs485-rts-delay optional X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a449f12bfe2f56c7975816d870c0bc0ef4d03125;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git dt-bindings: serial/rs485: make rs485-rts-delay optional There are a few device trees that specify one of the already optional properties without also having the up to now required property rs485-rts-delay. Additionally there is no technical reason to require rs485-rts-delay and that's also what most drivers implement. So give existing users and implementers a blessing and document rs485-rts-delay as optional. Signed-off-by: Uwe Kleine-König Acked-by: Rob Herring Signed-off-by: Greg Kroah-Hartman --- diff --git a/Documentation/devicetree/bindings/serial/rs485.txt b/Documentation/devicetree/bindings/serial/rs485.txt index 32b1fa1f2a5b..b8415936dfdb 100644 --- a/Documentation/devicetree/bindings/serial/rs485.txt +++ b/Documentation/devicetree/bindings/serial/rs485.txt @@ -5,14 +5,13 @@ the built-in half-duplex mode. The properties described hereafter shall be given to a half-duplex capable UART node. -Required properties: +Optional properties: - rs485-rts-delay: prop-encoded-array where: * a is the delay between rts signal and beginning of data sent in milliseconds. it corresponds to the delay before sending data. * b is the delay between end of data sent and rts signal in milliseconds it corresponds to the delay after sending data and actual release of the line. - -Optional properties: + If this property is not specified, <0 0> is assumed. - linux,rs485-enabled-at-boot-time: empty property telling to enable the rs485 feature at boot time. It can be disabled later with proper ioctl. - rs485-rx-during-tx: empty property that enables the receiving of data even