Thread (34 messages) 34 messages, 6 authors, 2015-06-15

[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

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 |
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help