gpio: syscon: Remove usage of syscon_regmap_lookup_by_compatible

Since version 5.13, the standard syscon bindings have been added
to all clps711x DT nodes, so we can now use the more general
syscon_regmap_lookup_by_phandle function to get the syscon pointer.

This patch removes the usage of the syscon_regmap_lookup_by_compatible
function as it is no longer used in the driver.
Signed-off-by: Alexander Shiyan <eagle.alexander923@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

drivers/gpio/gpio-syscon.c

@@ -38,7 +38,6 @@
  */
 
 struct syscon_gpio_data {
-	const char	*compatible;
 	unsigned int	flags;
 	unsigned int	bit_count;
 	unsigned int	dat_bit_offset;
@@ -125,7 +124,6 @@ static int syscon_gpio_dir_out(struct gpio_chip *chip, unsigned offset, int val)
 
 static const struct syscon_gpio_data clps711x_mctrl_gpio = {
 	/* ARM CLPS711X SYSFLG1 Bits 8-10 */
-	.compatible	= "cirrus,ep7209-syscon1",
 	.flags		= GPIO_SYSCON_FEAT_IN,
 	.bit_count	= 3,
 	.dat_bit_offset	= 0x40 * 8 + 8,
@@ -182,7 +180,6 @@ static void keystone_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
 
 static const struct syscon_gpio_data keystone_dsp_gpio = {
 	/* ARM Keystone 2 */
-	.compatible	= NULL,
 	.flags		= GPIO_SYSCON_FEAT_OUT,
 	.bit_count	= 28,
 	.dat_bit_offset	= 4,
@@ -219,33 +216,25 @@ static int syscon_gpio_probe(struct platform_device *pdev)
 
 	priv->data = of_device_get_match_data(dev);
 
-	if (priv->data->compatible) {
-		priv->syscon = syscon_regmap_lookup_by_compatible(
-					priv->data->compatible);
-		if (IS_ERR(priv->syscon))
-			return PTR_ERR(priv->syscon);
-	} else {
-		priv->syscon =
-			syscon_regmap_lookup_by_phandle(np, "gpio,syscon-dev");
-		if (IS_ERR(priv->syscon) && np->parent)
-			priv->syscon = syscon_node_to_regmap(np->parent);
-		if (IS_ERR(priv->syscon))
-			return PTR_ERR(priv->syscon);
-
-		ret = of_property_read_u32_index(np, "gpio,syscon-dev", 1,
-						 &priv->dreg_offset);
-		if (ret)
-			dev_err(dev, "can't read the data register offset!\n");
-
-		priv->dreg_offset <<= 3;
-
-		ret = of_property_read_u32_index(np, "gpio,syscon-dev", 2,
-						 &priv->dir_reg_offset);
-		if (ret)
-			dev_dbg(dev, "can't read the dir register offset!\n");
-
-		priv->dir_reg_offset <<= 3;
-	}
+	priv->syscon = syscon_regmap_lookup_by_phandle(np, "gpio,syscon-dev");
+	if (IS_ERR(priv->syscon) && np->parent)
+		priv->syscon = syscon_node_to_regmap(np->parent);
+	if (IS_ERR(priv->syscon))
+		return PTR_ERR(priv->syscon);
+
+	ret = of_property_read_u32_index(np, "gpio,syscon-dev", 1,
+					 &priv->dreg_offset);
+	if (ret)
+		dev_err(dev, "can't read the data register offset!\n");
+
+	priv->dreg_offset <<= 3;
+
+	ret = of_property_read_u32_index(np, "gpio,syscon-dev", 2,
+					 &priv->dir_reg_offset);
+	if (ret)
+		dev_dbg(dev, "can't read the dir register offset!\n");
+
+	priv->dir_reg_offset <<= 3;
 
 	priv->chip.parent = dev;
 	priv->chip.owner = THIS_MODULE;