misc: imx8: scu: simplify code to make it extendable

clk and pinctrl will be get(probed) during each device probe,
we don't need to probe them in scu driver. Only need to bind the sub-nodes
(clk and iomuxc) of MU node with their drivers.

So drop the code to probe the clk/pinctrl, and this patch will make it
easy to add more subnodes.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/drivers/misc/imx8/scu.c b/drivers/misc/imx8/scu.c
index 9ec00457b8b5bf14835817724420aee5047f8a97..a7654a781733385807fed52e20a928961f7c8491 100644 (file)
--- a/drivers/misc/imx8/scu.c
+++ b/drivers/misc/imx8/scu.c
@@ -26,8 +26,6 @@ struct mu_type {
 
 struct imx8_scu {
        struct mu_type *base;
-       struct udevice *clk;
-       struct udevice *pinclk;
 };
 
 #define MU_CR_GIE_MASK         0xF0000000u
@@ -202,9 +200,6 @@ static int imx8_scu_probe(struct udevice *dev)
 
        gd->arch.scu_dev = dev;
 
-       device_probe(plat->clk);
-       device_probe(plat->pinclk);
-
        return 0;
 }
 
@@ -215,44 +210,17 @@ static int imx8_scu_remove(struct udevice *dev)
 
 static int imx8_scu_bind(struct udevice *dev)
 {
-       struct imx8_scu *plat = dev_get_platdata(dev);
        int ret;
        struct udevice *child;
-       int node;
-       char *clk_compatible, *iomuxc_compatible;
-
-       if (IS_ENABLED(CONFIG_IMX8QXP)) {
-               clk_compatible = "fsl,imx8qxp-clk";
-               iomuxc_compatible = "fsl,imx8qxp-iomuxc";
-       } else if (IS_ENABLED(CONFIG_IMX8QM)) {
-               clk_compatible = "fsl,imx8qm-clk";
-               iomuxc_compatible = "fsl,imx8qm-iomuxc";
-       } else {
-               return -EINVAL;
-       }
+       ofnode node;
 
        debug("%s(dev=%p)\n", __func__, dev);
-
-       node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, clk_compatible);
-       if (node < 0)
-               panic("No clk node found\n");
-
-       ret = lists_bind_fdt(dev, offset_to_ofnode(node), &child, true);
-       if (ret)
-               return ret;
-
-       plat->clk = child;
-
-       node = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
-                                            iomuxc_compatible);
-       if (node < 0)
-               panic("No iomuxc node found\n");
-
-       ret = lists_bind_fdt(dev, offset_to_ofnode(node), &child, true);
-       if (ret)
-               return ret;
-
-       plat->pinclk = child;
+       ofnode_for_each_subnode(node, dev_ofnode(dev)) {
+               ret = lists_bind_fdt(dev, node, &child, true);
+               if (ret)
+                       return ret;
+               debug("bind child dev %s\n", child->name);
+       }
 
        return 0;
 }