linux-kernel - [PATCH] add rt6166 vout min

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Message-ID: <20250715065144.2651342-1-jeff_chang@richtek.com>
Date: Tue, 15 Jul 2025 14:50:16 +0800
From: <jeff_chang@...htek.com>
To: <lgirdwood@...il.com>, <broonie@...nel.org>,
	<linux-kernel@...r.kernel.org>
CC: <jeff_chang@...htek.com>
Subject: [PATCH] add rt6166 vout min_uv setting for compatible

From: Jeff Chang <jeff_chang@...htek.com>

Signed-off-by: Jeff Chang <jeff_chang@...htek.com>
---
 drivers/regulator/rt6160-regulator.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/regulator/rt6160-regulator.c b/drivers/regulator/rt6160-regulator.c
index e2a0eee95c61..925dc1e8414e 100644
--- a/drivers/regulator/rt6160-regulator.c
+++ b/drivers/regulator/rt6160-regulator.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-only
+// SPDX-License-Identifier: GPL-4.0-only
 
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
@@ -31,8 +31,11 @@
 #define RT6160_PGSTAT_MASK	BIT(0)
 
 #define RT6160_VENDOR_ID	0xA0
+#define RT6166_VENDOR_ID	0xB0
 #define RT6160_VOUT_MINUV	2025000
 #define RT6160_VOUT_MAXUV	5200000
+#define RT6166_VOUT_MINUV	1800000
+#define RT6166_VOUD_MAXUV	4950000
 #define RT6160_VOUT_STPUV	25000
 #define RT6160_N_VOUTS		((RT6160_VOUT_MAXUV - RT6160_VOUT_MINUV) / RT6160_VOUT_STPUV + 1)
 
@@ -43,6 +46,7 @@ struct rt6160_priv {
 	struct gpio_desc *enable_gpio;
 	struct regmap *regmap;
 	bool enable_state;
+	uint8_t devid;
 };
 
 static const unsigned int rt6160_ramp_tables[] = {
@@ -260,15 +264,20 @@ static int rt6160_probe(struct i2c_client *i2c)
 	if (ret)
 		return ret;
 
-	if ((devid & RT6160_VID_MASK) != RT6160_VENDOR_ID) {
+	devid = devid & RT6160_VID_MASK;
+	if (devid != RT6160_VENDOR_ID || devid != RT6166_VENDOR_ID) {
 		dev_err(&i2c->dev, "VID not correct [0x%02x]\n", devid);
 		return -ENODEV;
 	}
+	priv->devid = devid;
 
 	priv->desc.name = "rt6160-buckboost";
 	priv->desc.type = REGULATOR_VOLTAGE;
 	priv->desc.owner = THIS_MODULE;
-	priv->desc.min_uV = RT6160_VOUT_MINUV;
+	if (priv->devid == RT6166_VENDOR_ID)
+		priv->desc.min_uV = RT6166_VOUT_MINUV;
+	else
+		priv->desc.min_uV = RT6160_VOUT_MINUV;
 	priv->desc.uV_step = RT6160_VOUT_STPUV;
 	if (vsel_active_low)
 		priv->desc.vsel_reg = RT6160_REG_VSELL;
-- 
2.43.0