From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/Documentation/devicetree/bindings/serial/rs485.txt | 32 +-------------------------------
1 files changed, 1 insertions(+), 31 deletions(-)
diff --git a/kernel/Documentation/devicetree/bindings/serial/rs485.txt b/kernel/Documentation/devicetree/bindings/serial/rs485.txt
index b7c29f7..a7fe93e 100644
--- a/kernel/Documentation/devicetree/bindings/serial/rs485.txt
+++ b/kernel/Documentation/devicetree/bindings/serial/rs485.txt
@@ -1,31 +1 @@
-* RS485 serial communications
-
-The RTS signal is capable of automatically controlling line direction for
-the built-in half-duplex mode.
-The properties described hereafter shall be given to a half-duplex capable
-UART node.
-
-Optional properties:
-- rs485-rts-delay: prop-encoded-array <a b> 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.
- If this property is not specified, <0 0> is assumed.
-- rs485-rts-active-low: drive RTS low when sending (default is high).
-- 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
- whilst sending data.
-
-RS485 example for Atmel USART:
- usart0: serial@fff8c000 {
- compatible = "atmel,at91sam9260-usart";
- reg = <0xfff8c000 0x4000>;
- interrupts = <7>;
- atmel,use-dma-rx;
- atmel,use-dma-tx;
- linux,rs485-enabled-at-boot-time;
- rs485-rts-delay = <0 200>; // in milliseconds
- };
-
+See rs485.yaml
--
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