linux-kernel - [PATCH] gpio: loongson: Switch 2K2000/3000 GPIO to BYTE_CTRL

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Message-ID: <20251128075033.255821-1-xry111@xry111.site>
Date: Fri, 28 Nov 2025 15:50:32 +0800
From: Xi Ruoyao <xry111@...111.site>
To: linux-gpio@...r.kernel.org
Cc: Huacai Chen <chenhuacai@...nel.org>,
	WANG Xuerui <kernel@...0n.name>,
	Mingcong Bai <jeffbai@...c.io>,
	loongarch@...ts.linux.dev,
	Xi Ruoyao <xry111@...111.site>,
	stable@...r.kernel.org,
	Yinbo Zhu <zhuyinbo@...ngson.cn>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...nel.org>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] gpio: loongson: Switch 2K2000/3000 GPIO to BYTE_CTRL_MODE

The manuals of 2K2000 says both BIT_CTRL_MODE and BYTE_CTRL_MODE are
supported but the latter is recommended.  Also on 2K3000, per the ACPI
DSDT the GPIO controller is compatible with 2K2000, but it fails to
operate GPIOs 62 and 63 (and maybe others) using BIT_CTRL_MODE.
Using BYTE_CTRL_MODE also makes those 2K3000 GPIOs work.

Fixes: 3feb70a61740 ("gpio: loongson: add more gpio chip support")
Cc: stable@...r.kernel.org
Signed-off-by: Xi Ruoyao <xry111@...111.site>
---
 drivers/gpio/gpio-loongson-64bit.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-loongson-64bit.c b/drivers/gpio/gpio-loongson-64bit.c
index 02f181cb219e..82d4c3aa4d2f 100644
--- a/drivers/gpio/gpio-loongson-64bit.c
+++ b/drivers/gpio/gpio-loongson-64bit.c
@@ -407,11 +407,11 @@ static const struct loongson_gpio_chip_data loongson_gpio_ls2k2000_data0 = {
 
 static const struct loongson_gpio_chip_data loongson_gpio_ls2k2000_data1 = {
 	.label = "ls2k2000_gpio",
-	.mode = BIT_CTRL_MODE,
-	.conf_offset = 0x0,
-	.in_offset = 0x20,
-	.out_offset = 0x10,
-	.inten_offset = 0x30,
+	.mode = BYTE_CTRL_MODE,
+	.conf_offset = 0x800,
+	.in_offset = 0xa00,
+	.out_offset = 0x900,
+	.inten_offset = 0xb00,
 };
 
 static const struct loongson_gpio_chip_data loongson_gpio_ls2k2000_data2 = {
-- 
2.52.0