Re: [PATCH v17 06/12] soc: mediatek: Add support for hierarchical scpsys device node

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On 30/09/2020 05:37, Weiyi Lu wrote:
On Mon, 2020-09-28 at 15:14 +0800, Nicolas Boichat wrote:
On Thu, Aug 6, 2020 at 5:22 PM Weiyi Lu <weiyi.lu@xxxxxxxxxxxx> wrote:

Try to list all the power domains of under power controller
node to show the dependency between each power domain directly
instead of filling the dependency in scp_soc_data.
And could be more clearly to group subsys clocks into power domain
sub node to introduce subsys clocks of bus protection in next patch.

Signed-off-by: Weiyi Lu <weiyi.lu@xxxxxxxxxxxx>
---
[snip]
+static int traverse_scp(struct platform_device *pdev, struct scp *scp,
+                       const struct scp_domain_data *scp_domain_data)
+{
+       struct device *dev = &pdev->dev;
+       struct device_node *np = dev->of_node;
+       struct device_node *sub;
+       int ret;
+
+       INIT_LIST_HEAD(&scp->dep_links);
+
+       for_each_available_child_of_node(np, sub) {
+               ret = scpsys_get_domain(pdev, scp, sub, scp_domain_data);
+               if (ret) {
+                       dev_err(&pdev->dev, "failed to handle node %pOFn: %d\n", sub, ret);

minor comment: this error should not be printed if ret ==
-EPROBE_DEFER (use the new dev_err_probe?)


You're right! I'll use dev_err_probe() instead if anyone is interested
in this series. Thank you!


I'd propose that we put all our effort of reviewing and testing into the series Enric send:
https://lore.kernel.org/linux-mediatek/20200910172826.3074357-1-enric.balletbo@xxxxxxxxxxxxx/

Regards,
Matthias

+                       goto err;
+               }
+       }
+
+       return 0;
+
+err:
+       of_node_put(sub);
+       return ret;
+}
[snip]




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