torvalds/linux
3
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-04-14 18:29:12 +08:00
Code Issues Packages Projects Releases Wiki Activity

mailbox: qcom-apcs-ipc: Assign OF node to clock controller child device

Browse Source 
Currently, the child device for the clock controller inside the APCS block
is created without any OF node assigned, so the drivers need to rely on the
parent device for obtaining any resources.

Add support for defining the clock controller inside a "clock-controller"
subnode to break up circular dependencies between the mailbox and required
parent clocks of the clock controller. For backwards compatibility, if the
subnode is not defined, reuse the OF node from the parent device.

Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
This commit is contained in:
Stephan Gerhold
2025-05-06 15:10:09 +02:00
committed by Jassi Brar
parent c3c5138714
commit d0b497df02
1 changed files with 12 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/mailbox/qcom-apcs-ipc-mailbox.c
View File

@@ -116,10 +116,18 @@ static int qcom_apcs_ipc_probe(struct platform_device *pdev)
}
if (apcs_data->clk_name) {
apcs->clk = platform_device_register_data(&pdev->dev,
apcs_data->clk_name,
PLATFORM_DEVID_AUTO,
NULL, 0);
struct device_node *np = of_get_child_by_name(pdev->dev.of_node,
"clock-controller");
struct platform_device_info pdevinfo = {
.parent = &pdev->dev,
.name = apcs_data->clk_name,
.id = PLATFORM_DEVID_AUTO,
.fwnode = of_fwnode_handle(np) ?: pdev->dev.fwnode,
.of_node_reused = !np,
};
apcs->clk = platform_device_register_full(&pdevinfo);
of_node_put(np);
if (IS_ERR(apcs->clk))
dev_err(&pdev->dev, "failed to register APCS clk\n");
}