linux-sg2042/drivers/clk/clk-nomadik.c

48 lines
1.5 KiB
C

#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");
}