1 files changed, 66 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.15/501-auxadc-add-auxadc-32k-clk.patch b/target/linux/mediatek/patches-5.15/501-auxadc-add-auxadc-32k-clk.patch
new file mode 100644
index 0000000000..a49fbca4ee
--- /dev/null
+++ b/target/linux/mediatek/patches-5.15/501-auxadc-add-auxadc-32k-clk.patch
@@ -0,0 +1,66 @@
+--- a/drivers/iio/adc/mt6577_auxadc.c
++++ b/drivers/iio/adc/mt6577_auxadc.c
+@@ -42,6 +42,7 @@ struct mtk_auxadc_compatible {
+ struct mt6577_auxadc_device {
+ 	void __iomem *reg_base;
+ 	struct clk *adc_clk;
++	struct clk *adc_32k_clk;
+ 	struct mutex lock;
+ 	const struct mtk_auxadc_compatible *dev_comp;
+ };
+@@ -222,6 +223,12 @@ static int __maybe_unused mt6577_auxadc_
+ 		return ret;
+ 	}
+ 
++	ret = clk_prepare_enable(adc_dev->adc_32k_clk);
++	if (ret) {
++		pr_err("failed to enable auxadc clock\n");
++		return ret;
++	}
++
+ 	mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
+ 			      MT6577_AUXADC_PDN_EN, 0);
+ 	mdelay(MT6577_AUXADC_POWER_READY_MS);
+@@ -236,6 +243,8 @@ static int __maybe_unused mt6577_auxadc_
+ 
+ 	mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
+ 			      0, MT6577_AUXADC_PDN_EN);
++
++	clk_disable_unprepare(adc_dev->adc_32k_clk);
+ 	clk_disable_unprepare(adc_dev->adc_clk);
+ 
+ 	return 0;
+@@ -277,6 +286,17 @@ static int mt6577_auxadc_probe(struct pl
+ 		return ret;
+ 	}
+ 
++	adc_dev->adc_32k_clk = devm_clk_get(&pdev->dev, "32k");
++	if (IS_ERR(adc_dev->adc_32k_clk)) {
++		dev_err(&pdev->dev, "failed to get auxadc 32k clock\n");
++	} else {
++		ret = clk_prepare_enable(adc_dev->adc_32k_clk);
++		if (ret) {
++			dev_err(&pdev->dev, "failed to enable auxadc 32k clock\n");
++			return ret;
++		}
++	}
++
+ 	adc_clk_rate = clk_get_rate(adc_dev->adc_clk);
+ 	if (!adc_clk_rate) {
+ 		ret = -EINVAL;
+@@ -306,6 +326,7 @@ err_power_off:
+ 	mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
+ 			      0, MT6577_AUXADC_PDN_EN);
+ err_disable_clk:
++	clk_disable_unprepare(adc_dev->adc_32k_clk);
+ 	clk_disable_unprepare(adc_dev->adc_clk);
+ 	return ret;
+ }
+@@ -320,6 +341,7 @@ static int mt6577_auxadc_remove(struct p
+ 	mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
+ 			      0, MT6577_AUXADC_PDN_EN);
+ 
++	clk_disable_unprepare(adc_dev->adc_32k_clk);
+ 	clk_disable_unprepare(adc_dev->adc_clk);
+ 
+ 	return 0;