From d646420e29da43ad2e23105ec72fb18ee911d0fd Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 9 Jan 2020 11:35:07 +0800 Subject: clk: add APIs to get (optional) clock by name without a device Sometimes we may need get (optional) clock without a device, that means use ofnode. e.g. when the phy node has subnode, and there is no device created for subnode, in this case, we need these new APIs to get subnode's clock. Signed-off-by: Chunfeng Yun Reviewed-by: Simon Glass Reviewed-by: Ryder Lee --- drivers/clk/clk-uclass.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'drivers') diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c index b7e18668cbd..93cb490eb53 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -344,6 +344,34 @@ int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk) return clk_get_by_index(dev, index, clk); } +int clk_get_by_name_nodev(ofnode node, const char *name, struct clk *clk) +{ + int index; + + debug("%s(node=%p, name=%s, clk=%p)\n", __func__, + ofnode_get_name(node), name, clk); + clk->dev = NULL; + + index = ofnode_stringlist_search(node, "clock-names", name); + if (index < 0) { + debug("fdt_stringlist_search() failed: %d\n", index); + return index; + } + + return clk_get_by_index_nodev(node, index, clk); +} + +int clk_get_optional_nodev(ofnode node, const char *name, struct clk *clk) +{ + int ret; + + ret = clk_get_by_name_nodev(node, name, clk); + if (ret == -ENODATA) + return 0; + + return ret; +} + int clk_release_all(struct clk *clk, int count) { int i, ret; -- cgit v1.2.3