IMX: introduce clock API
This patch introduces the clock API for i.MX and converts all in-Kernel drivers to use it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>hifive-unleashed-5.1
Sascha Hauer
Robert Schwebel
parent
dbff4e9ea2
commit
38a41fdf94
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@ -4,7 +4,7 @@
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# Object file lists.
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obj-y += irq.o time.o dma.o generic.o
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obj-y += irq.o time.o dma.o generic.o clock.o
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obj-$(CONFIG_CPU_FREQ_IMX) += cpufreq.o
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@ -0,0 +1,205 @@
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/*
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* Copyright (C) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/math64.h>
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#include <linux/err.h>
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#include <asm/io.h>
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#include <asm/arch/imx-regs.h>
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/*
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* Very simple approach: We can't disable clocks, so we do
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* not need refcounting
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*/
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struct clk {
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struct list_head node;
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const char *name;
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unsigned long (*get_rate)(void);
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};
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/*
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* get the system pll clock in Hz
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*
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* mfi + mfn / (mfd +1)
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* f = 2 * f_ref * --------------------
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* pd + 1
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*/
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static unsigned long imx_decode_pll(unsigned int pll, u32 f_ref)
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{
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unsigned long long ll;
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unsigned long quot;
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u32 mfi = (pll >> 10) & 0xf;
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u32 mfn = pll & 0x3ff;
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u32 mfd = (pll >> 16) & 0x3ff;
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u32 pd = (pll >> 26) & 0xf;
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mfi = mfi <= 5 ? 5 : mfi;
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ll = 2 * (unsigned long long)f_ref *
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((mfi << 16) + (mfn << 16) / (mfd + 1));
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quot = (pd + 1) * (1 << 16);
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ll += quot / 2;
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do_div(ll, quot);
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return (unsigned long)ll;
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}
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static unsigned long imx_get_system_clk(void)
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{
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u32 f_ref = (CSCR & CSCR_SYSTEM_SEL) ? 16000000 : (CLK32 * 512);
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return imx_decode_pll(SPCTL0, f_ref);
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}
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static unsigned long imx_get_mcu_clk(void)
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{
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return imx_decode_pll(MPCTL0, CLK32 * 512);
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}
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/*
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* get peripheral clock 1 ( UART[12], Timer[12], PWM )
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*/
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static unsigned long imx_get_perclk1(void)
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{
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return imx_get_system_clk() / (((PCDR) & 0xf)+1);
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}
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/*
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* get peripheral clock 2 ( LCD, SD, SPI[12] )
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*/
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static unsigned long imx_get_perclk2(void)
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{
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return imx_get_system_clk() / (((PCDR>>4) & 0xf)+1);
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}
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/*
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* get peripheral clock 3 ( SSI )
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*/
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static unsigned long imx_get_perclk3(void)
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{
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return imx_get_system_clk() / (((PCDR>>16) & 0x7f)+1);
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}
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/*
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* get hclk ( SDRAM, CSI, Memory Stick, I2C, DMA )
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*/
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static unsigned long imx_get_hclk(void)
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{
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return imx_get_system_clk() / (((CSCR>>10) & 0xf)+1);
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}
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static struct clk clk_system_clk = {
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.name = "system_clk",
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.get_rate = imx_get_system_clk,
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};
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static struct clk clk_hclk = {
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.name = "hclk",
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.get_rate = imx_get_hclk,
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};
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static struct clk clk_mcu_clk = {
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.name = "mcu_clk",
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.get_rate = imx_get_mcu_clk,
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};
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static struct clk clk_perclk1 = {
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.name = "perclk1",
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.get_rate = imx_get_perclk1,
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};
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static struct clk clk_uart_clk = {
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.name = "uart_clk",
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.get_rate = imx_get_perclk1,
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};
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static struct clk clk_perclk2 = {
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.name = "perclk2",
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.get_rate = imx_get_perclk2,
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};
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static struct clk clk_perclk3 = {
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.name = "perclk3",
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.get_rate = imx_get_perclk3,
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};
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static struct clk *clks[] = {
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&clk_perclk1,
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&clk_perclk2,
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&clk_perclk3,
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&clk_system_clk,
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&clk_hclk,
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&clk_mcu_clk,
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&clk_uart_clk,
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};
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static LIST_HEAD(clocks);
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static DEFINE_MUTEX(clocks_mutex);
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struct clk *clk_get(struct device *dev, const char *id)
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{
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struct clk *p, *clk = ERR_PTR(-ENOENT);
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mutex_lock(&clocks_mutex);
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list_for_each_entry(p, &clocks, node) {
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if (!strcmp(p->name, id)) {
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clk = p;
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goto found;
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}
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}
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found:
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mutex_unlock(&clocks_mutex);
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return clk;
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}
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void clk_put(struct clk *clk)
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{
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}
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int clk_enable(struct clk *clk)
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{
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return 0;
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}
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void clk_disable(struct clk *clk)
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{
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}
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unsigned long clk_get_rate(struct clk *clk)
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{
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return clk->get_rate();
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}
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int imx_clocks_init(void)
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{
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int i;
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mutex_lock(&clocks_mutex);
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for (i = 0; i < ARRAY_SIZE(clks); i++)
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list_add(&clks[i]->node, &clocks);
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mutex_unlock(&clocks_mutex);
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return 0;
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}
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@ -32,6 +32,8 @@
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/cpufreq.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <asm/system.h>
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#include <asm/hardware.h>
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@ -52,6 +54,8 @@
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static u32 mpctl0_at_boot;
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static u32 bclk_div_at_boot;
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static struct clk *system_clk, *mcu_clk;
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static void imx_set_async_mode(void)
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{
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adjust_cr(CR_920T_CLOCK_MODE, CR_920T_ASYNC_MODE);
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@ -160,10 +164,10 @@ static unsigned int imx_get_speed(unsigned int cpu)
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cr = get_cr();
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if((cr & CR_920T_CLOCK_MODE) == CR_920T_FASTBUS_MODE) {
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freq = imx_get_system_clk();
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freq = clk_get_rate(system_clk);
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freq = (freq + bclk_div/2) / bclk_div;
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} else {
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freq = imx_get_mcu_clk();
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freq = clk_get_rate(mcu_clk);
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if (cscr & CSCR_MPU_PRESC)
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freq /= 2;
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}
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@ -201,7 +205,7 @@ static int imx_set_target(struct cpufreq_policy *policy,
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pr_debug(KERN_DEBUG "imx: requested frequency %ld Hz, mpctl0 at boot 0x%08x\n",
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freq, mpctl0_at_boot);
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sysclk = imx_get_system_clk();
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sysclk = clk_get_rate(system_clk);
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if (freq > sysclk / bclk_div_at_boot + 1000000) {
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freq = imx_compute_mpctl(&mpctl0, mpctl0_at_boot, CLK32 * 512, freq, relation);
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@ -290,6 +294,16 @@ static int __init imx_cpufreq_init(void)
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bclk_div_at_boot = __mfld2val(CSCR_BCLK_DIV, CSCR) + 1;
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mpctl0_at_boot = 0;
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system_clk = clk_get(NULL, "system_clk");
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if (IS_ERR(system_clk))
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return PTR_ERR(system_clk);
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mcu_clk = clk_get(NULL, "mcu_clk");
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if (IS_ERR(mcu_clk)) {
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clk_put(system_clk);
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return PTR_ERR(mcu_clk);
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}
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if((CSCR & CSCR_MPEN) &&
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((get_cr() & CR_920T_CLOCK_MODE) != CR_920T_FASTBUS_MODE))
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mpctl0_at_boot = MPCTL0;
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@ -214,82 +214,6 @@ int imx_irq_to_gpio(unsigned irq)
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EXPORT_SYMBOL(imx_irq_to_gpio);
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/*
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* get the system pll clock in Hz
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*
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* mfi + mfn / (mfd +1)
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* f = 2 * f_ref * --------------------
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* pd + 1
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*/
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static unsigned int imx_decode_pll(unsigned int pll, u32 f_ref)
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{
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unsigned long long ll;
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unsigned long quot;
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u32 mfi = (pll >> 10) & 0xf;
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u32 mfn = pll & 0x3ff;
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u32 mfd = (pll >> 16) & 0x3ff;
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u32 pd = (pll >> 26) & 0xf;
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mfi = mfi <= 5 ? 5 : mfi;
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ll = 2 * (unsigned long long)f_ref * ( (mfi<<16) + (mfn<<16) / (mfd+1) );
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quot = (pd+1) * (1<<16);
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ll += quot / 2;
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do_div(ll, quot);
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return (unsigned int) ll;
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}
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unsigned int imx_get_system_clk(void)
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{
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u32 f_ref = (CSCR & CSCR_SYSTEM_SEL) ? 16000000 : (CLK32 * 512);
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return imx_decode_pll(SPCTL0, f_ref);
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}
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EXPORT_SYMBOL(imx_get_system_clk);
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unsigned int imx_get_mcu_clk(void)
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{
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return imx_decode_pll(MPCTL0, CLK32 * 512);
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}
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EXPORT_SYMBOL(imx_get_mcu_clk);
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/*
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* get peripheral clock 1 ( UART[12], Timer[12], PWM )
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*/
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unsigned int imx_get_perclk1(void)
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{
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return imx_get_system_clk() / (((PCDR) & 0xf)+1);
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}
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EXPORT_SYMBOL(imx_get_perclk1);
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/*
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* get peripheral clock 2 ( LCD, SD, SPI[12] )
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*/
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unsigned int imx_get_perclk2(void)
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{
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return imx_get_system_clk() / (((PCDR>>4) & 0xf)+1);
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}
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EXPORT_SYMBOL(imx_get_perclk2);
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/*
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* get peripheral clock 3 ( SSI )
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*/
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unsigned int imx_get_perclk3(void)
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{
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return imx_get_system_clk() / (((PCDR>>16) & 0x7f)+1);
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}
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EXPORT_SYMBOL(imx_get_perclk3);
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/*
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* get hclk ( SDRAM, CSI, Memory Stick, I2C, DMA )
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*/
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unsigned int imx_get_hclk(void)
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{
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return imx_get_system_clk() / (((CSCR>>10) & 0xf)+1);
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}
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EXPORT_SYMBOL(imx_get_hclk);
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static struct resource imx_mmc_resources[] = {
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[0] = {
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.start = 0x00214000,
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@ -17,6 +17,7 @@
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#include <linux/time.h>
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#include <linux/clocksource.h>
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#include <linux/clockchips.h>
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#include <linux/clk.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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@ -86,10 +87,10 @@ static struct clocksource clocksource_imx = {
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.flags = CLOCK_SOURCE_IS_CONTINUOUS,
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};
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static int __init imx_clocksource_init(void)
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static int __init imx_clocksource_init(unsigned long rate)
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{
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clocksource_imx.mult =
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clocksource_hz2mult(imx_get_perclk1(), clocksource_imx.shift);
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clocksource_hz2mult(rate, clocksource_imx.shift);
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clocksource_register(&clocksource_imx);
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return 0;
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@ -174,9 +175,9 @@ static struct clock_event_device clockevent_imx = {
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.rating = 200,
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};
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static int __init imx_clockevent_init(void)
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static int __init imx_clockevent_init(unsigned long rate)
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{
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clockevent_imx.mult = div_sc(imx_get_perclk1(), NSEC_PER_SEC,
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clockevent_imx.mult = div_sc(rate, NSEC_PER_SEC,
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clockevent_imx.shift);
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clockevent_imx.max_delta_ns =
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clockevent_delta2ns(0xfffffffe, &clockevent_imx);
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@ -190,13 +191,23 @@ static int __init imx_clockevent_init(void)
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return 0;
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}
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extern int imx_clocks_init(void);
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static void __init imx_timer_init(void)
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{
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imx_timer_hardware_init();
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imx_clocksource_init();
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struct clk *clk;
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unsigned long rate;
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imx_clockevent_init();
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imx_clocks_init();
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clk = clk_get(NULL, "perclk1");
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clk_enable(clk);
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rate = clk_get_rate(clk);
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imx_timer_hardware_init();
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imx_clocksource_init(rate);
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imx_clockevent_init(rate);
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/*
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* Make irqs happen for the system timer
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@ -42,6 +42,7 @@
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#include <linux/mmc/host.h>
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#include <linux/mmc/card.h>
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#include <linux/delay.h>
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#include <linux/clk.h>
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#include <asm/dma.h>
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#include <asm/io.h>
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@ -92,6 +93,8 @@ struct imxmci_host {
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unsigned char actual_bus_width;
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int prev_cmd_code;
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struct clk *clk;
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};
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#define IMXMCI_PEND_IRQ_b 0
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@ -841,7 +844,7 @@ static void imxmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
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/* The prescaler is 5 for PERCLK2 equal to 96MHz
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* then 96MHz / 5 = 19.2 MHz
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*/
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clk=imx_get_perclk2();
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clk = clk_get_rate(host->clk);
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prescaler=(clk+(CLK_RATE*7)/8)/CLK_RATE;
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switch(prescaler) {
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case 0:
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@ -994,6 +997,13 @@ static int imxmci_probe(struct platform_device *pdev)
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host->res = r;
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host->irq = irq;
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host->clk = clk_get(&pdev->dev, "perclk2");
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if (IS_ERR(host->clk)) {
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ret = PTR_ERR(host->clk);
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goto out;
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}
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clk_enable(host->clk);
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imx_gpio_mode(PB8_PF_SD_DAT0);
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imx_gpio_mode(PB9_PF_SD_DAT1);
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imx_gpio_mode(PB10_PF_SD_DAT2);
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@ -1053,6 +1063,10 @@ out:
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imx_dma_free(host->dma);
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host->dma_allocated=0;
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}
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if (host->clk) {
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clk_disable(host->clk);
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clk_put(host->clk);
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}
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}
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if (mmc)
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mmc_free_host(mmc);
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@ -1082,6 +1096,9 @@ static int imxmci_remove(struct platform_device *pdev)
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tasklet_kill(&host->tasklet);
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clk_disable(host->clk);
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clk_put(host->clk);
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release_resource(host->res);
|
||||
|
||||
mmc_free_host(mmc);
|
||||
|
|
|
|||
|
|
@ -40,6 +40,7 @@
|
|||
#include <linux/tty_flip.h>
|
||||
#include <linux/serial_core.h>
|
||||
#include <linux/serial.h>
|
||||
#include <linux/clk.h>
|
||||
|
||||
#include <asm/io.h>
|
||||
#include <asm/irq.h>
|
||||
|
|
@ -184,6 +185,7 @@ struct imx_port {
|
|||
unsigned int old_status;
|
||||
int txirq,rxirq,rtsirq;
|
||||
int have_rtscts:1;
|
||||
struct clk *clk;
|
||||
};
|
||||
|
||||
/*
|
||||
|
|
@ -479,7 +481,8 @@ static int imx_setup_ufcr(struct imx_port *sport, unsigned int mode)
|
|||
* RFDIV is set such way to satisfy requested uartclk value
|
||||
*/
|
||||
val = TXTL << 10 | RXTL;
|
||||
ufcr_rfdiv = (imx_get_perclk1() + sport->port.uartclk / 2) / sport->port.uartclk;
|
||||
ufcr_rfdiv = (clk_get_rate(sport->clk) + sport->port.uartclk / 2)
|
||||
/ sport->port.uartclk;
|
||||
|
||||
if(!ufcr_rfdiv)
|
||||
ufcr_rfdiv = 1;
|
||||
|
|
@ -916,7 +919,7 @@ imx_console_get_options(struct imx_port *sport, int *baud,
|
|||
else
|
||||
ucfr_rfdiv = 6 - ucfr_rfdiv;
|
||||
|
||||
uartclk = imx_get_perclk1();
|
||||
uartclk = clk_get_rate(sport->clk);
|
||||
uartclk /= ucfr_rfdiv;
|
||||
|
||||
{ /*
|
||||
|
|
@ -1054,7 +1057,15 @@ static int serial_imx_probe(struct platform_device *pdev)
|
|||
init_timer(&sport->timer);
|
||||
sport->timer.function = imx_timeout;
|
||||
sport->timer.data = (unsigned long)sport;
|
||||
sport->port.uartclk = imx_get_perclk1();
|
||||
|
||||
sport->clk = clk_get(&pdev->dev, "uart_clk");
|
||||
if (IS_ERR(sport->clk)) {
|
||||
ret = PTR_ERR(sport->clk);
|
||||
goto unmap;
|
||||
}
|
||||
clk_enable(sport->clk);
|
||||
|
||||
sport->port.uartclk = clk_get_rate(sport->clk);
|
||||
|
||||
imx_ports[pdev->id] = sport;
|
||||
|
||||
|
|
@ -1069,6 +1080,8 @@ static int serial_imx_probe(struct platform_device *pdev)
|
|||
platform_set_drvdata(pdev, &sport->port);
|
||||
|
||||
return 0;
|
||||
unmap:
|
||||
iounmap(sport->port.membase);
|
||||
free:
|
||||
kfree(sport);
|
||||
|
||||
|
|
@ -1084,8 +1097,12 @@ static int serial_imx_remove(struct platform_device *pdev)
|
|||
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
|
||||
if (sport)
|
||||
if (sport) {
|
||||
uart_remove_one_port(&imx_reg, &sport->port);
|
||||
clk_put(sport->clk);
|
||||
}
|
||||
|
||||
clk_disable(sport->clk);
|
||||
|
||||
if (pdata->exit)
|
||||
pdata->exit(pdev);
|
||||
|
|
|
|||
|
|
@ -29,6 +29,7 @@
|
|||
#include <linux/spi/spi.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/clk.h>
|
||||
|
||||
#include <asm/io.h>
|
||||
#include <asm/irq.h>
|
||||
|
|
@ -250,6 +251,8 @@ struct driver_data {
|
|||
int tx_dma_needs_unmap;
|
||||
size_t tx_map_len;
|
||||
u32 dummy_dma_buf ____cacheline_aligned;
|
||||
|
||||
struct clk *clk;
|
||||
};
|
||||
|
||||
/* Runtime state */
|
||||
|
|
@ -855,15 +858,15 @@ static irqreturn_t spi_int(int irq, void *dev_id)
|
|||
return drv_data->transfer_handler(drv_data);
|
||||
}
|
||||
|
||||
static inline u32 spi_speed_hz(u32 data_rate)
|
||||
static inline u32 spi_speed_hz(struct driver_data *drv_data, u32 data_rate)
|
||||
{
|
||||
return imx_get_perclk2() / (4 << ((data_rate) >> 13));
|
||||
return clk_get_rate(drv_data->clk) / (4 << ((data_rate) >> 13));
|
||||
}
|
||||
|
||||
static u32 spi_data_rate(u32 speed_hz)
|
||||
static u32 spi_data_rate(struct driver_data *drv_data, u32 speed_hz)
|
||||
{
|
||||
u32 div;
|
||||
u32 quantized_hz = imx_get_perclk2() >> 2;
|
||||
u32 quantized_hz = clk_get_rate(drv_data->clk) >> 2;
|
||||
|
||||
for (div = SPI_PERCLK2_DIV_MIN;
|
||||
div <= SPI_PERCLK2_DIV_MAX;
|
||||
|
|
@ -947,7 +950,7 @@ static void pump_transfers(unsigned long data)
|
|||
tmp = transfer->speed_hz;
|
||||
if (tmp == 0)
|
||||
tmp = chip->max_speed_hz;
|
||||
tmp = spi_data_rate(tmp);
|
||||
tmp = spi_data_rate(drv_data, tmp);
|
||||
u32_EDIT(control, SPI_CONTROL_DATARATE, tmp);
|
||||
|
||||
writel(control, regs + SPI_CONTROL);
|
||||
|
|
@ -1109,7 +1112,7 @@ static int transfer(struct spi_device *spi, struct spi_message *msg)
|
|||
msg->actual_length = 0;
|
||||
|
||||
/* Per transfer setup check */
|
||||
min_speed_hz = spi_speed_hz(SPI_CONTROL_DATARATE_MIN);
|
||||
min_speed_hz = spi_speed_hz(drv_data, SPI_CONTROL_DATARATE_MIN);
|
||||
max_speed_hz = spi->max_speed_hz;
|
||||
list_for_each_entry(trans, &msg->transfers, transfer_list) {
|
||||
tmp = trans->bits_per_word;
|
||||
|
|
@ -1176,6 +1179,7 @@ msg_rejected:
|
|||
applied and notified to the calling driver. */
|
||||
static int setup(struct spi_device *spi)
|
||||
{
|
||||
struct driver_data *drv_data = spi_master_get_devdata(spi->master);
|
||||
struct spi_imx_chip *chip_info;
|
||||
struct chip_data *chip;
|
||||
int first_setup = 0;
|
||||
|
|
@ -1304,14 +1308,14 @@ static int setup(struct spi_device *spi)
|
|||
chip->n_bytes = (tmp <= 8) ? 1 : 2;
|
||||
|
||||
/* SPI datarate */
|
||||
tmp = spi_data_rate(spi->max_speed_hz);
|
||||
tmp = spi_data_rate(drv_data, spi->max_speed_hz);
|
||||
if (tmp == SPI_CONTROL_DATARATE_BAD) {
|
||||
status = -EINVAL;
|
||||
dev_err(&spi->dev,
|
||||
"setup - "
|
||||
"HW min speed (%d Hz) exceeds required "
|
||||
"max speed (%d Hz)\n",
|
||||
spi_speed_hz(SPI_CONTROL_DATARATE_MIN),
|
||||
spi_speed_hz(drv_data, SPI_CONTROL_DATARATE_MIN),
|
||||
spi->max_speed_hz);
|
||||
if (first_setup)
|
||||
goto err_first_setup;
|
||||
|
|
@ -1321,7 +1325,7 @@ static int setup(struct spi_device *spi)
|
|||
} else {
|
||||
u32_EDIT(chip->control, SPI_CONTROL_DATARATE, tmp);
|
||||
/* Actual rounded max_speed_hz */
|
||||
tmp = spi_speed_hz(tmp);
|
||||
tmp = spi_speed_hz(drv_data, tmp);
|
||||
spi->max_speed_hz = tmp;
|
||||
chip->max_speed_hz = tmp;
|
||||
}
|
||||
|
|
@ -1352,7 +1356,7 @@ static int setup(struct spi_device *spi)
|
|||
chip->period & SPI_PERIOD_WAIT,
|
||||
spi->mode,
|
||||
spi->bits_per_word,
|
||||
spi_speed_hz(SPI_CONTROL_DATARATE_MIN),
|
||||
spi_speed_hz(drv_data, SPI_CONTROL_DATARATE_MIN),
|
||||
spi->max_speed_hz);
|
||||
return status;
|
||||
|
||||
|
|
@ -1465,6 +1469,14 @@ static int __init spi_imx_probe(struct platform_device *pdev)
|
|||
goto err_no_pdata;
|
||||
}
|
||||
|
||||
drv_data->clk = clk_get(&pdev->dev, "perclk2");
|
||||
if (IS_ERR(drv_data->clk)) {
|
||||
dev_err(&pdev->dev, "probe - cannot get get\n");
|
||||
status = PTR_ERR(drv_data->clk);
|
||||
goto err_no_clk;
|
||||
}
|
||||
clk_enable(drv_data->clk);
|
||||
|
||||
/* Allocate master with space for drv_data */
|
||||
master = spi_alloc_master(dev, sizeof(struct driver_data));
|
||||
if (!master) {
|
||||
|
|
@ -1623,6 +1635,9 @@ err_no_iores:
|
|||
spi_master_put(master);
|
||||
|
||||
err_no_pdata:
|
||||
clk_disable(drv_data->clk);
|
||||
clk_put(drv_data->clk);
|
||||
err_no_clk:
|
||||
err_no_mem:
|
||||
return status;
|
||||
}
|
||||
|
|
@ -1662,6 +1677,9 @@ static int __exit spi_imx_remove(struct platform_device *pdev)
|
|||
if (irq >= 0)
|
||||
free_irq(irq, drv_data);
|
||||
|
||||
clk_disable(drv_data->clk);
|
||||
clk_put(drv_data->clk);
|
||||
|
||||
/* Release map resources */
|
||||
iounmap(drv_data->regs);
|
||||
release_resource(drv_data->ioarea);
|
||||
|
|
|
|||
|
|
@ -73,14 +73,6 @@
|
|||
*/
|
||||
extern void imx_gpio_mode( int gpio_mode );
|
||||
|
||||
/* get frequencies in Hz */
|
||||
extern unsigned int imx_get_system_clk(void);
|
||||
extern unsigned int imx_get_mcu_clk(void);
|
||||
extern unsigned int imx_get_perclk1(void); /* UART[12], Timer[12], PWM */
|
||||
extern unsigned int imx_get_perclk2(void); /* LCD, SD, SPI[12] */
|
||||
extern unsigned int imx_get_perclk3(void); /* SSI */
|
||||
extern unsigned int imx_get_hclk(void); /* SDRAM, CSI, Memory Stick,*/
|
||||
/* I2C, DMA */
|
||||
#endif
|
||||
|
||||
#define MAXIRQNUM 62
|
||||
|
|
|
|||
Loading…
Reference in New Issue