[PATCH 5/5] clk: mediatek: Add USB clock support in MT8173 APMIXEDSYS
From: s.hauer@pengutronix.de (Sascha Hauer)
Date: 2015-05-26 08:05:25
Also in:
linux-devicetree, linux-mediatek, lkml
From: s.hauer@pengutronix.de (Sascha Hauer)
Date: 2015-05-26 08:05:25
Also in:
linux-devicetree, linux-mediatek, lkml
On Thu, May 21, 2015 at 03:12:56PM +0800, James Liao wrote:
Add REF2USB_TX clock support into MT8173 APMIXEDSYS. This clock
is needed by USB 3.0.
+
+static struct clk *mtk_clk_register_ref2usb_tx(const char *name,
+ void __iomem *reg)
+{
+ struct mtk_ref2usb_tx *tx;
+ struct clk_init_data init = {};
+ struct clk *clk;
+ const char *parent_name = "clk26m";
+
+ tx = kzalloc(sizeof(*tx), GFP_KERNEL);
+ if (!tx)
+ return ERR_PTR(-ENOMEM);
+
+ tx->base_addr = reg;
+ tx->hw.init = &init;
+
+ init.name = name;
+ init.ops = &mtk_ref2usb_tx_ops;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ clk = clk_register(NULL, &tx->hw);
+
+ if (IS_ERR(clk)) {
+ pr_err("Failed to register clk %s: %ld\n", name, PTR_ERR(clk));
+ kfree(tx);
+ }
+
+ return clk;
+}
+
+static void __init mtk_clk_register_apmixedsys_special(struct device_node *node,
+ struct clk_onecell_data *clk_data)
+{
+ void __iomem *base;
+ struct clk *clk;
+
+ base = of_iomap(node, 0);
+ if (!base) {
+ pr_err("%s(): ioremap failed\n", __func__);
+ return;
+ }
+
+ clk = mtk_clk_register_ref2usb_tx("ref2usb_tx", base + 0x8);The function seems to be for one special clock only. Why do you pass the name to it? They will never be called with another name, right? Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |