[PATCH v2 2/3] iio: adc: sun20i-gpadc: add A523 gpadc support

[Sanjay Chitroda]

On 13 May 2026 10:29:43 am IST, Michal Piekos <michal.piekos at mmpsystems.pl> wrote:
>A523 differs from existing sun20i-gpadc-iio by having two clocks; bus
>clock and module clock.
>
>Change driver to enable all clocks.
>
>Signed-off-by: Michal Piekos <michal.piekos at mmpsystems.pl>
>---
> drivers/iio/adc/sun20i-gpadc-iio.c | 11 +++++++----
> 1 file changed, 7 insertions(+), 4 deletions(-)
>
>diff --git a/drivers/iio/adc/sun20i-gpadc-iio.c b/drivers/iio/adc/sun20i-gpadc-iio.c
>index 861c14da75ad..3f1f07b3a385 100644
>--- a/drivers/iio/adc/sun20i-gpadc-iio.c
>+++ b/drivers/iio/adc/sun20i-gpadc-iio.c
>@@ -180,7 +180,7 @@ static int sun20i_gpadc_probe(struct platform_device *pdev)
> 	struct iio_dev *indio_dev;
> 	struct sun20i_gpadc_iio *info;
> 	struct reset_control *rst;
>-	struct clk *clk;
>+	struct clk_bulk_data *clks;
> 	int irq;
> 	int ret;
> 
>@@ -205,9 +205,11 @@ static int sun20i_gpadc_probe(struct platform_device *pdev)
> 	if (IS_ERR(info->regs))
> 		return PTR_ERR(info->regs);
> 
>-	clk = devm_clk_get_enabled(dev, NULL);
>-	if (IS_ERR(clk))
>-		return dev_err_probe(dev, PTR_ERR(clk), "failed to enable bus clock\n");
>+	ret = devm_clk_bulk_get_all_enabled(dev, &clks);
>+	if (ret <= 0)

Thank you Michal for the change.

Have you validated the changes ?
It looks while success ret would be 0 and it would give return error.

Thanks, Sanjay


>+		return dev_err_probe(
>+			dev, ret,
>+			"failed to enable clocks or no clocks defined\n");
> 
> 	rst = devm_reset_control_get_exclusive(dev, NULL);
> 	if (IS_ERR(rst))
>@@ -243,6 +245,7 @@ static int sun20i_gpadc_probe(struct platform_device *pdev)
> 
> static const struct of_device_id sun20i_gpadc_of_id[] = {
> 	{ .compatible = "allwinner,sun20i-d1-gpadc" },
>+	{ .compatible = "allwinner,sun55i-a523-gpadc" },
> 	{ }
> };
> MODULE_DEVICE_TABLE(of, sun20i_gpadc_of_id);
>