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Message-ID: <35d882417c0a9c37e51b878790e2fa31dd0a1d63.camel@gmail.com> Date: Fri, 06 Sep 2024 07:42:52 +0200 From: Nuno Sá <noname.nuno@...il.com> To: David Lechner <dlechner@...libre.com>, Angelo Dureghello <adureghello@...libre.com>, Lars-Peter Clausen <lars@...afoo.de>, Michael Hennerich <Michael.Hennerich@...log.com>, Nuno Sá <nuno.sa@...log.com>, Jonathan Cameron <jic23@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Olivier Moysan <olivier.moysan@...s.st.com> Cc: linux-iio@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2 4/9] iio: backend adi-axi-dac: add registering of child fdt node On Thu, 2024-09-05 at 14:19 -0500, David Lechner wrote: > On 9/5/24 10:17 AM, Angelo Dureghello wrote: > > From: Angelo Dureghello <adureghello@...libre.com> > > > > Change to obtain the fdt use case as reported in the > > adi,ad3552r.yaml file in this patchset, with the DAC device that > > is actually using the backend set as a child node of the backend. > > > > To obtain this, registering all the child fdt nodes as platform > > devices. > > > > Signed-off-by: Angelo Dureghello <adureghello@...libre.com> > > Co-developed-by: David Lechner <dlechner@...libre.com> > > Co-developed-by: Nuno Sá <nuno.sa@...log.com> > > --- > > drivers/iio/dac/adi-axi-dac.c | 15 +++++++++++++++ > > 1 file changed, 15 insertions(+) > > > > diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c > > index cc31e1dcd1df..e883cd557b6a 100644 > > --- a/drivers/iio/dac/adi-axi-dac.c > > +++ b/drivers/iio/dac/adi-axi-dac.c > > @@ -783,6 +783,7 @@ static int axi_dac_probe(struct platform_device *pdev) > > { > > struct axi_dac_state *st; > > const struct axi_dac_info *info; > > + struct platform_device *child_pdev; > > void __iomem *base; > > unsigned int ver; > > struct clk *clk; > > @@ -862,6 +863,20 @@ static int axi_dac_probe(struct platform_device *pdev) > > return dev_err_probe(&pdev->dev, ret, > > "failed to register iio backend\n"); > > > > + device_for_each_child_node_scoped(&pdev->dev, child) { > > This should use fwnode_for_each_available_child_node() so that it skips > nodes with status != "okay". > device_for_each_child_node() already only looks at available nodes IIRC - Nuno Sá
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