Add post binding support for CLK uclass to recursively bind its children as clk devices.
Signed-off-by: Wenyou Yang wenyou.yang@atmel.com ---
drivers/clk/clk-uclass.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+)
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c index b483c1e..ee568e4 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -106,7 +106,58 @@ int clk_get_by_index(struct udevice *dev, int index, struct udevice **clk_devp) } #endif
+/** + * clk_post-bind() - post binding for CLK uclass + * Recursively bind its children as clk devices. + * + * @dev: clk device + * @return: 0 on success, or negative error code on failure + */ +static int clk_post_bind(struct udevice *dev) +{ + const void *fdt = gd->fdt_blob; + int offset = dev->of_offset; + bool pre_reloc_only = !(gd->flags & GD_FLG_RELOC); + const char *name; + int ret; + + for (offset = fdt_first_subnode(fdt, offset); + offset > 0; + offset = fdt_next_subnode(fdt, offset)) { + if (pre_reloc_only && + !fdt_getprop(fdt, offset, "u-boot,dm-pre-reloc", NULL)) + continue; + /* + * If this node has "compatible" property, this is not a clk + * node, but a normal device. skip. + */ + fdt_get_property(fdt, offset, "compatible", &ret); + if (ret >= 0) + continue; + + if (ret != -FDT_ERR_NOTFOUND) + return ret; + + name = fdt_get_name(fdt, offset, NULL); + if (!name) + return -EINVAL; + + ret = device_bind_driver_to_node(dev, "clk", name, + offset, NULL); + if (ret) + return ret; + } + + return 0; +} + UCLASS_DRIVER(clk) = { .id = UCLASS_CLK, + .post_bind = clk_post_bind, .name = "clk", }; + +U_BOOT_DRIVER(clk_generic) = { + .id = UCLASS_CLK, + .name = "clk", +};