Re: [PATCH v1 4/4] regulator: axp20x: Set DCDC frequency only when property exists
From: Andre Przywara
Date: Mon Apr 17 2023 - 10:20:32 EST
On Fri, 7 Apr 2023 22:18:13 +0800
Shengyu Qu <wiagn233@xxxxxxxxxxx> wrote:
> Current axp20x regulator driver would always set DCDC frequency even if
> there is no x-powers,dcdc-freq in device tree data. Causing meaningless
> warning info output on variants that do not support DCDC frequency
> modification. So only try to set DCDC frequency when there is frequency
> property.
This patch should not be needed. You should disallow the
x-powers,dcdc-freq property in the binding (see [1]), then handle that
like the AXP313a driver does: by explicitly checking that the property
does not exist, then returning, see [2].
In general you might want to rebase your series on top of the AXP313a v10
series, as this most likely goes in before.
Cheers,
Andre
[1]
https://lore.kernel.org/linux-sunxi/20230401001850.4988-2-andre.przywara@xxxxxxx/
[2]
https://lore.kernel.org/linux-sunxi/20230401001850.4988-4-andre.przywara@xxxxxxx/
> Signed-off-by: Shengyu Qu <wiagn233@xxxxxxxxxxx>
> ---
> drivers/regulator/axp20x-regulator.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
> index ece4af93df7b..12a12923bc7b 100644
> --- a/drivers/regulator/axp20x-regulator.c
> +++ b/drivers/regulator/axp20x-regulator.c
> @@ -1247,10 +1247,10 @@ static int axp20x_regulator_parse_dt(struct platform_device *pdev)
> if (!regulators) {
> dev_warn(&pdev->dev, "regulators node not found\n");
> } else {
> - of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
> - ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
> - if (ret < 0) {
> - dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
> + if (of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq) != -EINVAL) {
> + ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
> + if (ret < 0)
> + dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
> }
> of_node_put(regulators);
> }