openwrt/target/linux/starfive/patches-6.6/0068-uart-8250-add-reset-operation-in-runtime-PM.patch
Zoltan HERPAI e2e2fc3cd0 starfive: add patches for 6.6
Add updated patches for 6.6. DMA/cache-handling patches
have been reworked / backported from upstream.

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
2024-09-03 00:03:19 +02:00

33 lines
867 B
Diff

From 777d288f03a0b350f6c2d4367b01a80d9f25cd6e Mon Sep 17 00:00:00 2001
From: William Qiu <william.qiu@starfivetech.com>
Date: Wed, 20 Sep 2023 17:19:59 +0800
Subject: [PATCH 068/116] uart: 8250: add reset operation in runtime PM
add reset operation in runtime PM
Signed-off-by: William Qiu <william.qiu@starfivetech.com>
---
drivers/tty/serial/8250/8250_dw.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -745,6 +745,8 @@ static int dw8250_runtime_suspend(struct
{
struct dw8250_data *data = dev_get_drvdata(dev);
+ reset_control_assert(data->rst);
+
clk_disable_unprepare(data->clk);
clk_disable_unprepare(data->pclk);
@@ -760,6 +762,8 @@ static int dw8250_runtime_resume(struct
clk_prepare_enable(data->clk);
+ reset_control_deassert(data->rst);
+
return 0;
}