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Message-Id: <20230529140711.896830-2-hugo@hugovil.com>
Date: Mon, 29 May 2023 10:07:03 -0400
From: Hugo Villeneuve <hugo@...ovil.com>
To: gregkh@...uxfoundation.org, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
jirislaby@...nel.org, jringle@...dpoint.com,
l.perczak@...lintechnologies.com, tomasz.mon@...lingroup.com
Cc: linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, hugo@...ovil.com,
linux-gpio@...r.kernel.org,
Hugo Villeneuve <hvilleneuve@...onoff.com>
Subject: [PATCH v4 1/9] serial: sc16is7xx: mark IOCONTROL register as volatile
From: Hugo Villeneuve <hvilleneuve@...onoff.com>
Bit SRESET (3) is cleared when a reset operation is completed. Having
the IOCONTROL register as non-volatile will always read SRESET as 1.
Therefore mark IOCONTROL register as a volatile register.
Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---
drivers/tty/serial/sc16is7xx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index abad091baeea..fbaadec557d8 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -488,6 +488,7 @@ static bool sc16is7xx_regmap_volatile(struct device *dev, unsigned int reg)
case SC16IS7XX_TXLVL_REG:
case SC16IS7XX_RXLVL_REG:
case SC16IS7XX_IOSTATE_REG:
+ case SC16IS7XX_IOCONTROL_REG:
return true;
default:
break;
--
2.30.2
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