74 lines
2.3 KiB
Diff
74 lines
2.3 KiB
Diff
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From 9b95732096c11d84bd0082aed0d575d8c09e3ab6 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
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Date: Fri, 18 Jul 2014 15:49:37 -0300
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Subject: [PATCH] clk: sunxi: codec clock support
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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The codec clock on sun4i, sun5i and sun7i is a simple gate with PLL2 as
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parent.
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Signed-off-by: Emilio López <emilio@elopez.com.ar>
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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drivers/clk/sunxi/Makefile | 1 +
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drivers/clk/sunxi/clk-a10-codec.c | 41 +++++++++++++++++++++++++++++++++++++++
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2 files changed, 42 insertions(+)
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create mode 100644 drivers/clk/sunxi/clk-a10-codec.c
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--- a/drivers/clk/sunxi/Makefile
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+++ b/drivers/clk/sunxi/Makefile
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@@ -3,6 +3,7 @@
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#
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obj-y += clk-sunxi.o clk-factors.o
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+obj-y += clk-a10-codec.o
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obj-y += clk-a10-hosc.o
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obj-y += clk-a10-pll2.o
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obj-y += clk-a20-gmac.o
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--- /dev/null
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+++ b/drivers/clk/sunxi/clk-a10-codec.c
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@@ -0,0 +1,41 @@
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+/*
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+ * Copyright 2013 Emilio López
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+ *
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+ * Emilio López <emilio@elopez.com.ar>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ */
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+
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+#include <linux/clk-provider.h>
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+#include <linux/clkdev.h>
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+#include <linux/of.h>
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+#include <linux/of_address.h>
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+
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+#define SUN4I_CODEC_GATE 31
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+
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+static void __init sun4i_codec_clk_setup(struct device_node *node)
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+{
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+ struct clk *clk;
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+ const char *clk_name = node->name, *parent_name;
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+ void __iomem *reg;
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+
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+ of_property_read_string(node, "clock-output-names", &clk_name);
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+ parent_name = of_clk_get_parent_name(node, 0);
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+ reg = of_iomap(node, 0);
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+
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+ clk = clk_register_gate(NULL, clk_name, parent_name,
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+ CLK_SET_RATE_PARENT, reg,
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+ SUN4I_CODEC_GATE, 0, NULL);
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+
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+ if (!IS_ERR(clk))
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+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
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+}
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+CLK_OF_DECLARE(sun4i_codec, "allwinner,sun4i-a10-codec-clk", sun4i_codec_clk_setup);
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