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patch-mxc-add-ARCH_MX1

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Adds MX1 architecture to platform MXC. It will supersede mach-imx
and let it die.

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Paulius Zaleckas 2008-11-14 11:01:38 +01:00 committed by Sascha Hauer
parent d133d6a893
commit cfca8b539f
16 changed files with 1264 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/Makefile
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@ -139,6 +139,7 @@ endif
plat-$(CONFIG_ARCH_MXC) := mxc
machine-$(CONFIG_ARCH_MX2) := mx2
machine-$(CONFIG_ARCH_MX3) := mx3
machine-$(CONFIG_ARCH_MX1) := mx1
machine-$(CONFIG_ARCH_ORION5X) := orion5x
plat-$(CONFIG_PLAT_ORION) := orion
machine-$(CONFIG_ARCH_MSM) := msm

14
arch/arm/mach-mx1/Kconfig Normal file
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@ -0,0 +1,14 @@
if ARCH_MX1
comment "MX1 Platforms"
config MACH_MXLADS
bool
config ARCH_MX1ADS
bool "MX1ADS platform"
select MACH_MXLADS
help
Say Y here if you are using Motorola MX1ADS/MXLADS boards
endif

10
arch/arm/mach-mx1/Makefile Normal file
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@ -0,0 +1,10 @@
#
# Makefile for the linux kernel.
#
# Object file lists.
obj-y += generic.o clock.o devices.o
# Specific board support
obj-$(CONFIG_ARCH_MX1ADS) += mx1ads.o

4
arch/arm/mach-mx1/Makefile.boot Normal file
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@ -0,0 +1,4 @@
zreladdr-y := 0x08008000
params_phys-y := 0x08000100
initrd_phys-y := 0x08800000

656
arch/arm/mach-mx1/clock.c Normal file
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@ -0,0 +1,656 @@
/*
* Copyright (C) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/math64.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <mach/clock.h>
#include <mach/hardware.h>
#include "crm_regs.h"
static int _clk_enable(struct clk *clk)
{
unsigned int reg;
reg = __raw_readl(clk->enable_reg);
reg |= 1 << clk->enable_shift;
__raw_writel(reg, clk->enable_reg);
return 0;
}
static void _clk_disable(struct clk *clk)
{
unsigned int reg;
reg = __raw_readl(clk->enable_reg);
reg &= ~(1 << clk->enable_shift);
__raw_writel(reg, clk->enable_reg);
}
static int _clk_can_use_parent(const struct clk *clk_arr[], unsigned int size,
struct clk *parent)
{
int i;
for (i = 0; i < size; i++)
if (parent == clk_arr[i])
return i;
return -EINVAL;
}
static unsigned long
_clk_simple_round_rate(struct clk *clk, unsigned long rate, unsigned int limit)
{
int div;
unsigned long parent_rate;
parent_rate = clk_get_rate(clk->parent);
div = parent_rate / rate;
if (parent_rate % rate)
div++;
if (div > limit)
div = limit;
return parent_rate / div;
}
static unsigned long _clk_parent_round_rate(struct clk *clk, unsigned long rate)
{
return clk->parent->round_rate(clk->parent, rate);
}
static int _clk_parent_set_rate(struct clk *clk, unsigned long rate)
{
return clk->parent->set_rate(clk->parent, rate);
}
/*
* get the system pll clock in Hz
*
* mfi + mfn / (mfd +1)
* f = 2 * f_ref * --------------------
* pd + 1
*/
static unsigned long mx1_decode_pll(unsigned int pll, u32 f_ref)
{
unsigned long long ll;
unsigned long quot;
u32 mfi = (pll >> 10) & 0xf;
u32 mfn = pll & 0x3ff;
u32 mfd = (pll >> 16) & 0x3ff;
u32 pd = (pll >> 26) & 0xf;
mfi = mfi <= 5 ? 5 : mfi;
ll = 2 * (unsigned long long)f_ref *
((mfi << 16) + (mfn << 16) / (mfd + 1));
quot = (pd + 1) * (1 << 16);
ll += quot / 2;
do_div(ll, quot);
return (unsigned long)ll;
}
static unsigned long clk16m_get_rate(struct clk *clk)
{
return 16000000;
}
static struct clk clk16m = {
.name = "CLK16M",
.get_rate = clk16m_get_rate,
.enable = _clk_enable,
.enable_reg = CCM_CSCR,
.enable_shift = CCM_CSCR_OSC_EN_SHIFT,
.disable = _clk_disable,
};
/* in Hz */
static unsigned long clk32_rate;
static unsigned long clk32_get_rate(struct clk *clk)
{
return clk32_rate;
}
static struct clk clk32 = {
.name = "CLK32",
.get_rate = clk32_get_rate,
};
static unsigned long clk32_premult_get_rate(struct clk *clk)
{
return clk_get_rate(clk->parent) * 512;
}
static struct clk clk32_premult = {
.name = "CLK32_premultiplier",
.parent = &clk32,
.get_rate = clk32_premult_get_rate,
};
static const struct clk *prem_clk_clocks[] = {
&clk32_premult,
&clk16m,
};
static int prem_clk_set_parent(struct clk *clk, struct clk *parent)
{
int i;
unsigned int reg = __raw_readl(CCM_CSCR);
i = _clk_can_use_parent(prem_clk_clocks, ARRAY_SIZE(prem_clk_clocks),
parent);
switch (i) {
case 0:
reg &= ~CCM_CSCR_SYSTEM_SEL;
break;
case 1:
reg |= CCM_CSCR_SYSTEM_SEL;
break;
default:
return i;
}
__raw_writel(reg, CCM_CSCR);
return 0;
}
static struct clk prem_clk = {
.name = "prem_clk",
.set_parent = prem_clk_set_parent,
};
static unsigned long system_clk_get_rate(struct clk *clk)
{
return mx1_decode_pll(__raw_readl(CCM_SPCTL0),
clk_get_rate(clk->parent));
}
static struct clk system_clk = {
.name = "system_clk",
.parent = &prem_clk,
.get_rate = system_clk_get_rate,
};
static unsigned long mcu_clk_get_rate(struct clk *clk)
{
return mx1_decode_pll(__raw_readl(CCM_MPCTL0),
clk_get_rate(clk->parent));
}
static struct clk mcu_clk = {
.name = "mcu_clk",
.parent = &clk32_premult,
.get_rate = mcu_clk_get_rate,
};
static unsigned long fclk_get_rate(struct clk *clk)
{
unsigned long fclk = clk_get_rate(clk->parent);
if (__raw_readl(CCM_CSCR) & CCM_CSCR_PRESC)
fclk /= 2;
return fclk;
}
static struct clk fclk = {
.name = "fclk",
.parent = &mcu_clk,
.get_rate = fclk_get_rate,
};
/*
* get hclk ( SDRAM, CSI, Memory Stick, I2C, DMA )
*/
static unsigned long hclk_get_rate(struct clk *clk)
{
return clk_get_rate(clk->parent) / (((__raw_readl(CCM_CSCR) &
CCM_CSCR_BCLK_MASK) >> CCM_CSCR_BCLK_OFFSET) + 1);
}
static unsigned long hclk_round_rate(struct clk *clk, unsigned long rate)
{
return _clk_simple_round_rate(clk, rate, 16);
}
static int hclk_set_rate(struct clk *clk, unsigned long rate)
{
unsigned int div;
unsigned int reg;
unsigned long parent_rate;
parent_rate = clk_get_rate(clk->parent);
div = parent_rate / rate;
if (div > 16 || div < 1 || ((parent_rate / div) != rate))
return -EINVAL;
div--;
reg = __raw_readl(CCM_CSCR);
reg &= ~CCM_CSCR_BCLK_MASK;
reg |= div << CCM_CSCR_BCLK_OFFSET;
__raw_writel(reg, CCM_CSCR);
return 0;
}
static struct clk hclk = {
.name = "hclk",
.parent = &system_clk,
.get_rate = hclk_get_rate,
.round_rate = hclk_round_rate,
.set_rate = hclk_set_rate,
};
static unsigned long clk48m_get_rate(struct clk *clk)
{
return clk_get_rate(clk->parent) / (((__raw_readl(CCM_CSCR) &
CCM_CSCR_USB_MASK) >> CCM_CSCR_USB_OFFSET) + 1);
}
static unsigned long clk48m_round_rate(struct clk *clk, unsigned long rate)
{
return _clk_simple_round_rate(clk, rate, 8);
}
static int clk48m_set_rate(struct clk *clk, unsigned long rate)
{
unsigned int div;
unsigned int reg;
unsigned long parent_rate;
parent_rate = clk_get_rate(clk->parent);
div = parent_rate / rate;
if (div > 8 || div < 1 || ((parent_rate / div) != rate))
return -EINVAL;
div--;
reg = __raw_readl(CCM_CSCR);
reg &= ~CCM_CSCR_USB_MASK;
reg |= div << CCM_CSCR_USB_OFFSET;
__raw_writel(reg, CCM_CSCR);
return 0;
}
static struct clk clk48m = {
.name = "CLK48M",
.parent = &system_clk,
.get_rate = clk48m_get_rate,
.round_rate = clk48m_round_rate,
.set_rate = clk48m_set_rate,
};
/*
* get peripheral clock 1 ( UART[12], Timer[12], PWM )
*/
static unsigned long perclk1_get_rate(struct clk *clk)
{
return clk_get_rate(clk->parent) / (((__raw_readl(CCM_PCDR) &
CCM_PCDR_PCLK1_MASK) >> CCM_PCDR_PCLK1_OFFSET) + 1);
}
static unsigned long perclk1_round_rate(struct clk *clk, unsigned long rate)
{
return _clk_simple_round_rate(clk, rate, 16);
}
static int perclk1_set_rate(struct clk *clk, unsigned long rate)
{
unsigned int div;
unsigned int reg;
unsigned long parent_rate;
parent_rate = clk_get_rate(clk->parent);
div = parent_rate / rate;
if (div > 16 || div < 1 || ((parent_rate / div) != rate))
return -EINVAL;
div--;
reg = __raw_readl(CCM_PCDR);
reg &= ~CCM_PCDR_PCLK1_MASK;
reg |= div << CCM_PCDR_PCLK1_OFFSET;
__raw_writel(reg, CCM_PCDR);
return 0;
}
/*
* get peripheral clock 2 ( LCD, SD, SPI[12] )
*/
static unsigned long perclk2_get_rate(struct clk *clk)
{
return clk_get_rate(clk->parent) / (((__raw_readl(CCM_PCDR) &
CCM_PCDR_PCLK2_MASK) >> CCM_PCDR_PCLK2_OFFSET) + 1);
}
static unsigned long perclk2_round_rate(struct clk *clk, unsigned long rate)
{
return _clk_simple_round_rate(clk, rate, 16);
}
static int perclk2_set_rate(struct clk *clk, unsigned long rate)
{
unsigned int div;
unsigned int reg;
unsigned long parent_rate;
parent_rate = clk_get_rate(clk->parent);
div = parent_rate / rate;
if (div > 16 || div < 1 || ((parent_rate / div) != rate))
return -EINVAL;
div--;
reg = __raw_readl(CCM_PCDR);
reg &= ~CCM_PCDR_PCLK2_MASK;
reg |= div << CCM_PCDR_PCLK2_OFFSET;
__raw_writel(reg, CCM_PCDR);
return 0;
}
/*
* get peripheral clock 3 ( SSI )
*/
static unsigned long perclk3_get_rate(struct clk *clk)
{
return clk_get_rate(clk->parent) / (((__raw_readl(CCM_PCDR) &
CCM_PCDR_PCLK3_MASK) >> CCM_PCDR_PCLK3_OFFSET) + 1);
}
static unsigned long perclk3_round_rate(struct clk *clk, unsigned long rate)
{
return _clk_simple_round_rate(clk, rate, 128);
}
static int perclk3_set_rate(struct clk *clk, unsigned long rate)
{
unsigned int div;
unsigned int reg;
unsigned long parent_rate;
parent_rate = clk_get_rate(clk->parent);
div = parent_rate / rate;
if (div > 128 || div < 1 || ((parent_rate / div) != rate))
return -EINVAL;
div--;
reg = __raw_readl(CCM_PCDR);
reg &= ~CCM_PCDR_PCLK3_MASK;
reg |= div << CCM_PCDR_PCLK3_OFFSET;
__raw_writel(reg, CCM_PCDR);
return 0;
}
static struct clk perclk[] = {
{
.name = "perclk",
.id = 0,
.parent = &system_clk,
.get_rate = perclk1_get_rate,
.round_rate = perclk1_round_rate,
.set_rate = perclk1_set_rate,
}, {
.name = "perclk",
.id = 1,
.parent = &system_clk,
.get_rate = perclk2_get_rate,
.round_rate = perclk2_round_rate,
.set_rate = perclk2_set_rate,
}, {
.name = "perclk",
.id = 2,
.parent = &system_clk,
.get_rate = perclk3_get_rate,
.round_rate = perclk3_round_rate,
.set_rate = perclk3_set_rate,
}
};
static const struct clk *clko_clocks[] = {
&perclk[0],
&hclk,
&clk48m,
&clk16m,
&prem_clk,
&fclk,
};
static int clko_set_parent(struct clk *clk, struct clk *parent)
{
int i;
unsigned int reg;
i = _clk_can_use_parent(clko_clocks, ARRAY_SIZE(clko_clocks), parent);
if (i < 0)
return i;
reg = __raw_readl(CCM_CSCR) & ~CCM_CSCR_CLKO_MASK;
reg |= i << CCM_CSCR_CLKO_OFFSET;
__raw_writel(reg, CCM_CSCR);
if (clko_clocks[i]->set_rate && clko_clocks[i]->round_rate) {
clk->set_rate = _clk_parent_set_rate;
clk->round_rate = _clk_parent_round_rate;
} else {
clk->set_rate = NULL;
clk->round_rate = NULL;
}
return 0;
}
static struct clk clko_clk = {
.name = "clko_clk",
.set_parent = clko_set_parent,
};
static struct clk dma_clk = {
.name = "dma_clk",
.parent = &hclk,
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
.enable = _clk_enable,
.enable_reg = SCM_GCCR,
.enable_shift = SCM_GCCR_DMA_CLK_EN_OFFSET,
.disable = _clk_disable,
};
static struct clk csi_clk = {
.name = "csi_clk",
.parent = &hclk,
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
.enable = _clk_enable,
.enable_reg = SCM_GCCR,
.enable_shift = SCM_GCCR_CSI_CLK_EN_OFFSET,
.disable = _clk_disable,
};
static struct clk mma_clk = {
.name = "mma_clk",
.parent = &hclk,
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
.enable = _clk_enable,
.enable_reg = SCM_GCCR,
.enable_shift = SCM_GCCR_MMA_CLK_EN_OFFSET,
.disable = _clk_disable,
};
static struct clk usbd_clk = {
.name = "usbd_clk",
.parent = &clk48m,
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
.enable = _clk_enable,
.enable_reg = SCM_GCCR,
.enable_shift = SCM_GCCR_USBD_CLK_EN_OFFSET,
.disable = _clk_disable,
};
static struct clk gpt_clk = {
.name = "gpt_clk",
.parent = &perclk[0],
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
};
static struct clk uart_clk = {
.name = "uart_clk",
.parent = &perclk[0],
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
};
static struct clk i2c_clk = {
.name = "i2c_clk",
.parent = &hclk,
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
};
static struct clk spi_clk = {
.name = "spi_clk",
.parent = &perclk[1],
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
};
static struct clk sdhc_clk = {
.name = "sdhc_clk",
.parent = &perclk[1],
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
};
static struct clk lcdc_clk = {
.name = "lcdc_clk",
.parent = &perclk[1],
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
};
static struct clk mshc_clk = {
.name = "mshc_clk",
.parent = &hclk,
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
};
static struct clk ssi_clk = {
.name = "ssi_clk",
.parent = &perclk[2],
.round_rate = _clk_parent_round_rate,
.set_rate = _clk_parent_set_rate,
};
static struct clk rtc_clk = {
.name = "rtc_clk",
.parent = &clk32,
};
static struct clk *mxc_clks[] = {
&clk16m,
&clk32,
&clk32_premult,
&prem_clk,
&system_clk,
&mcu_clk,
&fclk,
&hclk,
&clk48m,
&perclk[0],
&perclk[1],
&perclk[2],
&clko_clk,
&dma_clk,
&csi_clk,
&mma_clk,
&usbd_clk,
&gpt_clk,
&uart_clk,
&i2c_clk,
&spi_clk,
&sdhc_clk,
&lcdc_clk,
&mshc_clk,
&ssi_clk,
&rtc_clk,
};
int __init mxc_clocks_init(unsigned long fref)
{
struct clk **clkp;
unsigned int reg;
/* disable clocks we are able to */
__raw_writel(0, SCM_GCCR);
clk32_rate = fref;
reg = __raw_readl(CCM_CSCR);
/* detect clock reference for system PLL */
if (reg & CCM_CSCR_SYSTEM_SEL) {
prem_clk.parent = &clk16m;
} else {
/* ensure that oscillator is disabled */
reg &= ~(1 << CCM_CSCR_OSC_EN_SHIFT);
__raw_writel(reg, CCM_CSCR);
prem_clk.parent = &clk32_premult;
}
/* detect reference for CLKO */
reg = (reg & CCM_CSCR_CLKO_MASK) >> CCM_CSCR_CLKO_OFFSET;
clko_clk.parent = (struct clk *)clko_clocks[reg];
for (clkp = mxc_clks; clkp < mxc_clks + ARRAY_SIZE(mxc_clks); clkp++)
clk_register(*clkp);
clk_enable(&hclk);
clk_enable(&fclk);
return 0;
}

55
arch/arm/mach-mx1/crm_regs.h Normal file
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@ -0,0 +1,55 @@
/*
* Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright (c) 2008 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
*
* This file may be distributed under the terms of the GNU General
* Public License, version 2.
*/
#ifndef __ARCH_ARM_MACH_MX1_CRM_REGS_H__
#define __ARCH_ARM_MACH_MX1_CRM_REGS_H__
#define CCM_BASE IO_ADDRESS(CCM_BASE_ADDR)
#define SCM_BASE IO_ADDRESS(SCM_BASE_ADDR)
/* CCM register addresses */
#define CCM_CSCR (CCM_BASE + 0x0)
#define CCM_MPCTL0 (CCM_BASE + 0x4)
#define CCM_MPCTL1 (CCM_BASE + 0x8)
#define CCM_SPCTL0 (CCM_BASE + 0xC)
#define CCM_SPCTL1 (CCM_BASE + 0x10)
#define CCM_PCDR (CCM_BASE + 0x20)
#define CCM_CSCR_CLKO_OFFSET 29
#define CCM_CSCR_CLKO_MASK (0x7 << 29)
#define CCM_CSCR_USB_OFFSET 26
#define CCM_CSCR_USB_MASK (0x7 << 26)
#define CCM_CSCR_SPLL_RESTART (1 << 22)
#define CCM_CSCR_MPLL_RESTART (1 << 21)
#define CCM_CSCR_OSC_EN_SHIFT 17
#define CCM_CSCR_SYSTEM_SEL (1 << 16)
#define CCM_CSCR_BCLK_OFFSET 10
#define CCM_CSCR_BCLK_MASK (0xF << 10)
#define CCM_CSCR_PRESC (1 << 15)
#define CCM_CSCR_SPEN (1 << 1)
#define CCM_CSCR_MPEN (1 << 0)
#define CCM_PCDR_PCLK3_OFFSET 16
#define CCM_PCDR_PCLK3_MASK (0x7F << 16)
#define CCM_PCDR_PCLK2_OFFSET 4
#define CCM_PCDR_PCLK2_MASK (0xF << 4)
#define CCM_PCDR_PCLK1_OFFSET 0
#define CCM_PCDR_PCLK1_MASK 0xF
/* SCM register addresses */
#define SCM_SIDR (SCM_BASE + 0x0)
#define SCM_FMCR (SCM_BASE + 0x4)
#define SCM_GPCR (SCM_BASE + 0x8)
#define SCM_GCCR (SCM_BASE + 0xC)
#define SCM_GCCR_DMA_CLK_EN_OFFSET 3
#define SCM_GCCR_CSI_CLK_EN_OFFSET 2
#define SCM_GCCR_MMA_CLK_EN_OFFSET 1
#define SCM_GCCR_USBD_CLK_EN_OFFSET 0
#endif /* __ARCH_ARM_MACH_MX2_CRM_REGS_H__ */

118
arch/arm/mach-mx1/devices.c Normal file
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@ -0,0 +1,118 @@
/*
* Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Sascha Hauer, kernel@pengutronix.de
* Copyright (c) 2008 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <mach/hardware.h>
static struct resource imx_uart1_resources[] = {
[0] = {
.start = UART1_BASE_ADDR,
.end = UART1_BASE_ADDR + 0xD0,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = UART1_MINT_RX,
.end = UART1_MINT_RX,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = UART1_MINT_TX,
.end = UART1_MINT_TX,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = UART1_MINT_RTS,
.end = UART1_MINT_RTS,
.flags = IORESOURCE_IRQ,
},
};
struct platform_device imx_uart1_device = {
.name = "imx-uart",
.id = 0,
.num_resources = ARRAY_SIZE(imx_uart1_resources),
.resource = imx_uart1_resources,
};
static struct resource imx_uart2_resources[] = {
[0] = {
.start = UART2_BASE_ADDR,
.end = UART2_BASE_ADDR + 0xD0,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = UART2_MINT_RX,
.end = UART2_MINT_RX,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = UART2_MINT_TX,
.end = UART2_MINT_TX,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = UART2_MINT_RTS,
.end = UART2_MINT_RTS,
.flags = IORESOURCE_IRQ,
},
};
struct platform_device imx_uart2_device = {
.name = "imx-uart",
.id = 1,
.num_resources = ARRAY_SIZE(imx_uart2_resources),
.resource = imx_uart2_resources,
};
/* GPIO port description */
static struct mxc_gpio_port imx_gpio_ports[] = {
[0] = {
.chip.label = "gpio-0",
.base = (void __iomem *)IO_ADDRESS(GPIO_BASE_ADDR),
.irq = GPIO_INT_PORTA,
.virtual_irq_start = MXC_MAX_INT_LINES
},
[1] = {
.chip.label = "gpio-1",
.base = (void __iomem *)IO_ADDRESS(GPIO_BASE_ADDR + 0x100),
.irq = GPIO_INT_PORTB,
.virtual_irq_start = MXC_MAX_INT_LINES + 32
},
[2] = {
.chip.label = "gpio-2",
.base = (void __iomem *)IO_ADDRESS(GPIO_BASE_ADDR + 0x200),
.irq = GPIO_INT_PORTC,
.virtual_irq_start = MXC_MAX_INT_LINES + 64
},
[3] = {
.chip.label = "gpio-3",
.base = (void __iomem *)IO_ADDRESS(GPIO_BASE_ADDR + 0x300),
.irq = GPIO_INT_PORTD,
.virtual_irq_start = MXC_MAX_INT_LINES + 96
}
};
int __init mxc_register_gpios(void)
{
return mxc_gpio_init(imx_gpio_ports, ARRAY_SIZE(imx_gpio_ports));
}

2
arch/arm/mach-mx1/devices.h Normal file
View File

@ -0,0 +1,2 @@
extern struct platform_device imx_uart1_device;
extern struct platform_device imx_uart2_device;

43
arch/arm/mach-mx1/generic.c Normal file
View File

@ -0,0 +1,43 @@
/*
* author: Sascha Hauer
* Created: april 20th, 2004
* Copyright: Synertronixx GmbH
*
* Common code for i.MX machines
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <asm/mach/map.h>
#include <mach/hardware.h>
static struct map_desc imx_io_desc[] __initdata = {
{
.virtual = IMX_IO_BASE,
.pfn = __phys_to_pfn(IMX_IO_PHYS),
.length = IMX_IO_SIZE,
.type = MT_DEVICE
}
};
void __init mxc_map_io(void)
{
iotable_init(imx_io_desc, ARRAY_SIZE(imx_io_desc));
}

148
arch/arm/mach-mx1/mx1ads.c Normal file
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@ -0,0 +1,148 @@
/*
* arch/arm/mach-imx/mx1ads.c
*
* Initially based on:
* linux-2.6.7-imx/arch/arm/mach-imx/scb9328.c
* Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
*
* 2004 (c) MontaVista Software, Inc.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/imx-uart.h>
#include <mach/iomux-mx1-mx2.h>
#include "devices.h"
/*
* UARTs platform data
*/
static int mxc_uart1_pins[] = {
PC9_PF_UART1_CTS,
PC10_PF_UART1_RTS,
PC11_PF_UART1_TXD,
PC12_PF_UART1_RXD,
};
static int uart1_mxc_init(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
ARRAY_SIZE(mxc_uart1_pins), "UART1");
}
static int uart1_mxc_exit(struct platform_device *pdev)
{
mxc_gpio_release_multiple_pins(mxc_uart1_pins,
ARRAY_SIZE(mxc_uart1_pins));
return 0;
}
static int mxc_uart2_pins[] = {
PB28_PF_UART2_CTS,
PB29_PF_UART2_RTS,
PB30_PF_UART2_TXD,
PB31_PF_UART2_RXD,
};
static int uart2_mxc_init(struct platform_device *pdev)
{
return mxc_gpio_setup_multiple_pins(mxc_uart2_pins,
ARRAY_SIZE(mxc_uart2_pins), "UART2");
}
static int uart2_mxc_exit(struct platform_device *pdev)
{
mxc_gpio_release_multiple_pins(mxc_uart2_pins,
ARRAY_SIZE(mxc_uart2_pins));
return 0;
}
static struct imxuart_platform_data uart_pdata[] = {
{
.init = uart1_mxc_init,
.exit = uart1_mxc_exit,
.flags = IMXUART_HAVE_RTSCTS,
}, {
.init = uart2_mxc_init,
.exit = uart2_mxc_exit,
.flags = IMXUART_HAVE_RTSCTS,
},
};
/*
* Physmap flash
*/
static struct physmap_flash_data mx1ads_flash_data = {
.width = 4, /* bankwidth in bytes */
};
static struct resource flash_resource = {
.start = IMX_CS0_PHYS,
.end = IMX_CS0_PHYS + SZ_32M - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device flash_device = {
.name = "physmap-flash",
.id = 0,
.resource = &flash_resource,
.num_resources = 1,
};
/*
* Board init
*/
static void __init mx1ads_init(void)
{
/* UART */
mxc_register_device(&imx_uart1_device, &uart_pdata[0]);
mxc_register_device(&imx_uart2_device, &uart_pdata[1]);
/* Physmap flash */
mxc_register_device(&flash_device, &mx1ads_flash_data);
}
static void __init mx1ads_timer_init(void)
{
mxc_clocks_init(32000);
mxc_timer_init("gpt_clk");
}
struct sys_timer mx1ads_timer = {
.init = mx1ads_timer_init,
};
MACHINE_START(MX1ADS, "Freescale MX1ADS")
/* Maintainer: Sascha Hauer, Pengutronix */
.phys_io = IMX_IO_PHYS,
.io_pg_offst = (IMX_IO_BASE >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x100,
.map_io = mxc_map_io,
.init_irq = mxc_init_irq,
.timer = &mx1ads_timer,
.init_machine = mx1ads_init,
MACHINE_END
MACHINE_START(MXLADS, "Freescale MXLADS")
.phys_io = IMX_IO_PHYS,
.io_pg_offst = (IMX_IO_BASE >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x100,
.map_io = mxc_map_io,
.init_irq = mxc_init_irq,
.timer = &mx1ads_timer,
.init_machine = mx1ads_init,
MACHINE_END

6
arch/arm/plat-mxc/Kconfig
View File

@ -6,6 +6,11 @@ choice
prompt "MXC/iMX Base Type"
default ARCH_MX3
config ARCH_MX1
bool "MX1-based"
help
This enables support for systems based on the Freescale i.MX1 family
config ARCH_MX2
bool "MX2-based"
select CPU_ARM926T
@ -20,6 +25,7 @@ config ARCH_MX3
endchoice
source "arch/arm/mach-mx1/Kconfig"
source "arch/arm/mach-mx2/Kconfig"
source "arch/arm/mach-mx3/Kconfig"

1
arch/arm/plat-mxc/Makefile
View File

@ -5,4 +5,5 @@
# Common support
obj-y := irq.o clock.o gpio.o time.o devices.o
obj-$(CONFIG_ARCH_MX1) += iomux-mx1-mx2.o dma-mx1-mx2.o
obj-$(CONFIG_ARCH_MX2) += iomux-mx1-mx2.o dma-mx1-mx2.o

6
arch/arm/plat-mxc/gpio.c
View File

@ -115,8 +115,8 @@ static void mxc_gpio_irq_handler(struct mxc_gpio_port *port, u32 irq_stat)
}
}
#ifdef CONFIG_ARCH_MX3
/* MX3 has one interrupt *per* gpio port */
#if defined(CONFIG_ARCH_MX3) || defined(CONFIG_ARCH_MX1)
/* MX1 and MX3 has one interrupt *per* gpio port */
static void mx3_gpio_irq_handler(u32 irq, struct irq_desc *desc)
{
u32 irq_stat;
@ -237,7 +237,7 @@ int __init mxc_gpio_init(struct mxc_gpio_port *port, int cnt)
/* its a serious configuration bug when it fails */
BUG_ON( gpiochip_add(&port[i].chip) < 0 );
#ifdef CONFIG_ARCH_MX3
#if defined(CONFIG_ARCH_MX3) || defined(CONFIG_ARCH_MX1)
/* setup one handler for each entry */
set_irq_chained_handler(port[i].irq, mx3_gpio_irq_handler);
set_irq_data(port[i].irq, &port[i]);

4
arch/arm/plat-mxc/include/mach/hardware.h
View File

@ -32,6 +32,10 @@
# endif
#endif
#ifdef CONFIG_ARCH_MX1
# include <mach/mx1.h>
#endif
#include <mach/mxc.h>
#endif /* __ASM_ARCH_MXC_HARDWARE_H__ */

197
arch/arm/plat-mxc/include/mach/mx1.h Normal file
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@ -0,0 +1,197 @@
/*
* Copyright (C) 1997,1998 Russell King
* Copyright (C) 1999 ARM Limited
* Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright (c) 2008 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARCH_MXC_MX1_H__
#define __ASM_ARCH_MXC_MX1_H__
#ifndef __ASM_ARCH_MXC_HARDWARE_H__
#error "Do not include directly."
#endif
#include <mach/vmalloc.h>
/*
* defines the hardware clock tick rate
*/
#define CLOCK_TICK_RATE 16000000
#define PHYS_OFFSET UL(0x08000000)
/*
* Memory map
*/
#define IMX_IO_PHYS 0x00200000
#define IMX_IO_SIZE 0x00100000
#define IMX_IO_BASE VMALLOC_END
#define IMX_CS0_PHYS 0x10000000
#define IMX_CS0_SIZE 0x02000000
#define IMX_CS1_PHYS 0x12000000
#define IMX_CS1_SIZE 0x01000000
#define IMX_CS2_PHYS 0x13000000
#define IMX_CS2_SIZE 0x01000000
#define IMX_CS3_PHYS 0x14000000
#define IMX_CS3_SIZE 0x01000000
#define IMX_CS4_PHYS 0x15000000
#define IMX_CS4_SIZE 0x01000000
#define IMX_CS5_PHYS 0x16000000
#define IMX_CS5_SIZE 0x01000000
/*
* Register BASEs, based on OFFSETs
*/
#define AIPI1_BASE_ADDR (0x00000 + IMX_IO_PHYS)
#define WDT_BASE_ADDR (0x01000 + IMX_IO_PHYS)
#define TIM1_BASE_ADDR (0x02000 + IMX_IO_PHYS)
#define TIM2_BASE_ADDR (0x03000 + IMX_IO_PHYS)
#define RTC_BASE_ADDR (0x04000 + IMX_IO_PHYS)
#define LCDC_BASE_ADDR (0x05000 + IMX_IO_PHYS)
#define UART1_BASE_ADDR (0x06000 + IMX_IO_PHYS)
#define UART2_BASE_ADDR (0x07000 + IMX_IO_PHYS)
#define PWM_BASE_ADDR (0x08000 + IMX_IO_PHYS)
#define DMA_BASE_ADDR (0x09000 + IMX_IO_PHYS)
#define AIPI2_BASE_ADDR (0x10000 + IMX_IO_PHYS)
#define SIM_BASE_ADDR (0x11000 + IMX_IO_PHYS)
#define USBD_BASE_ADDR (0x12000 + IMX_IO_PHYS)
#define SPI1_BASE_ADDR (0x13000 + IMX_IO_PHYS)
#define MMC_BASE_ADDR (0x14000 + IMX_IO_PHYS)
#define ASP_BASE_ADDR (0x15000 + IMX_IO_PHYS)
#define BTA_BASE_ADDR (0x16000 + IMX_IO_PHYS)
#define I2C_BASE_ADDR (0x17000 + IMX_IO_PHYS)
#define SSI_BASE_ADDR (0x18000 + IMX_IO_PHYS)
#define SPI2_BASE_ADDR (0x19000 + IMX_IO_PHYS)
#define MSHC_BASE_ADDR (0x1A000 + IMX_IO_PHYS)
#define CCM_BASE_ADDR (0x1B000 + IMX_IO_PHYS)
#define SCM_BASE_ADDR (0x1B804 + IMX_IO_PHYS)
#define GPIO_BASE_ADDR (0x1C000 + IMX_IO_PHYS)
#define EIM_BASE_ADDR (0x20000 + IMX_IO_PHYS)
#define SDRAMC_BASE_ADDR (0x21000 + IMX_IO_PHYS)
#define MMA_BASE_ADDR (0x22000 + IMX_IO_PHYS)
#define AVIC_BASE_ADDR (0x23000 + IMX_IO_PHYS)
#define CSI_BASE_ADDR (0x24000 + IMX_IO_PHYS)
/* macro to get at IO space when running virtually */
#define IO_ADDRESS(x) ((x) - IMX_IO_PHYS + IMX_IO_BASE)
/* define macros needed for entry-macro.S */
#define AVIC_IO_ADDRESS(x) IO_ADDRESS(x)
/* fixed interrput numbers */
#define INT_SOFTINT 0
#define CSI_INT 6
#define DSPA_MAC_INT 7
#define DSPA_INT 8
#define COMP_INT 9
#define MSHC_XINT 10
#define GPIO_INT_PORTA 11
#define GPIO_INT_PORTB 12
#define GPIO_INT_PORTC 13
#define LCDC_INT 14
#define SIM_INT 15
#define SIM_DATA_INT 16
#define RTC_INT 17
#define RTC_SAMINT 18
#define UART2_MINT_PFERR 19
#define UART2_MINT_RTS 20
#define UART2_MINT_DTR 21
#define UART2_MINT_UARTC 22
#define UART2_MINT_TX 23
#define UART2_MINT_RX 24
#define UART1_MINT_PFERR 25
#define UART1_MINT_RTS 26
#define UART1_MINT_DTR 27
#define UART1_MINT_UARTC 28
#define UART1_MINT_TX 29
#define UART1_MINT_RX 30
#define VOICE_DAC_INT 31
#define VOICE_ADC_INT 32
#define PEN_DATA_INT 33
#define PWM_INT 34
#define SDHC_INT 35
#define I2C_INT 39
#define CSPI_INT 41
#define SSI_TX_INT 42
#define SSI_TX_ERR_INT 43
#define SSI_RX_INT 44
#define SSI_RX_ERR_INT 45
#define TOUCH_INT 46
#define USBD_INT0 47
#define USBD_INT1 48
#define USBD_INT2 49
#define USBD_INT3 50
#define USBD_INT4 51
#define USBD_INT5 52
#define USBD_INT6 53
#define BTSYS_INT 55
#define BTTIM_INT 56
#define BTWUI_INT 57
#define TIM2_INT 58
#define TIM1_INT 59
#define DMA_ERR 60
#define DMA_INT 61
#define GPIO_INT_PORTD 62
#define WDT_INT 63
#define MXC_MAX_INT_LINES 64
#define NR_IRQS 256
/* gpio and gpio based interrupt handling */
#define GPIO_DR 0x1C
#define GPIO_GDIR 0x00
#define GPIO_PSR 0x24
#define GPIO_ICR1 0x28
#define GPIO_ICR2 0x2C
#define GPIO_IMR 0x30
#define GPIO_ISR 0x34
#define GPIO_INT_LOW_LEV 0x3
#define GPIO_INT_HIGH_LEV 0x2
#define GPIO_INT_RISE_EDGE 0x0
#define GPIO_INT_FALL_EDGE 0x1
#define GPIO_INT_NONE 0x4
/* DMA */
#define DMA_REQ_UART3_T 2
#define DMA_REQ_UART3_R 3
#define DMA_REQ_SSI2_T 4
#define DMA_REQ_SSI2_R 5
#define DMA_REQ_CSI_STAT 6
#define DMA_REQ_CSI_R 7
#define DMA_REQ_MSHC 8
#define DMA_REQ_DSPA_DCT_DOUT 9
#define DMA_REQ_DSPA_DCT_DIN 10
#define DMA_REQ_DSPA_MAC 11
#define DMA_REQ_EXT 12
#define DMA_REQ_SDHC 13
#define DMA_REQ_SPI1_R 14
#define DMA_REQ_SPI1_T 15
#define DMA_REQ_SSI_T 16
#define DMA_REQ_SSI_R 17
#define DMA_REQ_ASP_DAC 18
#define DMA_REQ_ASP_ADC 19
#define DMA_REQ_USP_EP(x) (20 + (x))
#define DMA_REQ_SPI2_R 26
#define DMA_REQ_SPI2_T 27
#define DMA_REQ_UART2_T 28
#define DMA_REQ_UART2_R 29
#define DMA_REQ_UART1_T 30
#define DMA_REQ_UART1_R 31
/* mandatory for CONFIG_LL_DEBUG */
#define MXC_LL_UART_PADDR UART1_BASE_ADDR
#define MXC_LL_UART_VADDR IO_ADDRESS(UART1_BASE_ADDR)
#endif /* __ASM_ARCH_MXC_MX1_H__ */

4
arch/arm/plat-mxc/include/mach/mxc_timer.h
View File

@ -26,7 +26,7 @@
#include <linux/clk.h>
#include <mach/hardware.h>
#ifdef CONFIG_ARCH_IMX
#ifdef CONFIG_ARCH_MX1
#define TIMER_BASE IO_ADDRESS(TIM1_BASE_ADDR)
#define TIMER_INTERRUPT TIM1_INT
@ -65,7 +65,7 @@ static void gpt_irq_acknowledge(void)
{
__raw_writel(0, TIMER_BASE + MXC_TSTAT);
}
#endif /* CONFIG_ARCH_IMX */
#endif /* CONFIG_ARCH_MX1 */
#ifdef CONFIG_ARCH_MX2
#define TIMER_BASE IO_ADDRESS(GPT1_BASE_ADDR)