ARM: nomadik: convert to generic clock
Remove more custom stuff by simply converting the Nomadik machine
to use generic clocks and move the driver to drivers/clk.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mike Turquette <mturquette@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/clk/clk-nomadik.c b/drivers/clk/clk-nomadik.c
new file mode 100644
index 0000000..517a8ff
--- /dev/null
+++ b/drivers/clk/clk-nomadik.c
@@ -0,0 +1,47 @@
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/clk-provider.h>
+
+/*
+ * The Nomadik clock tree is described in the STN8815A12 DB V4.2
+ * reference manual for the chip, page 94 ff.
+ */
+
+void __init nomadik_clk_init(void)
+{
+ struct clk *clk;
+
+ clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, 0);
+ clk_register_clkdev(clk, "apb_pclk", NULL);
+ clk_register_clkdev(clk, NULL, "gpio.0");
+ clk_register_clkdev(clk, NULL, "gpio.1");
+ clk_register_clkdev(clk, NULL, "gpio.2");
+ clk_register_clkdev(clk, NULL, "gpio.3");
+ clk_register_clkdev(clk, NULL, "rng");
+
+ /*
+ * The 2.4 MHz TIMCLK reference clock is active at boot time, this is
+ * actually the MXTALCLK @19.2 MHz divided by 8. This clock is used
+ * by the timers and watchdog. See page 105 ff.
+ */
+ clk = clk_register_fixed_rate(NULL, "TIMCLK", NULL, CLK_IS_ROOT,
+ 2400000);
+ clk_register_clkdev(clk, NULL, "mtu0");
+ clk_register_clkdev(clk, NULL, "mtu1");
+
+ /*
+ * At boot time, PLL2 is set to generate a set of fixed clocks,
+ * one of them is CLK48, the 48 MHz clock, routed to the UART, MMC/SD
+ * I2C, IrDA, USB and SSP blocks.
+ */
+ clk = clk_register_fixed_rate(NULL, "CLK48", NULL, CLK_IS_ROOT,
+ 48000000);
+ clk_register_clkdev(clk, NULL, "uart0");
+ clk_register_clkdev(clk, NULL, "uart1");
+ clk_register_clkdev(clk, NULL, "mmci");
+ clk_register_clkdev(clk, NULL, "ssp");
+ clk_register_clkdev(clk, NULL, "nmk-i2c.0");
+ clk_register_clkdev(clk, NULL, "nmk-i2c.1");
+}