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linux/arch/m68k/coldfire/m523x.c

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[PATCH] m68knommu: 523x ColdFire processor init code Low level initialization code for the 523x ColdFire processor family. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-02 08:42:52 +08:00
/***************************************************************************/
/*
m68k: fix crufty ColdFire intro comments Quite a few of the ColdFire specific support files have a pathname in the title comments of the file. These files have moved around a bit over the years, and most are no longer accurate. Remove the pathname and fix the comments to include at least a short description of the files contents. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-08-19 09:55:24 +08:00
* m523x.c -- platform support for ColdFire 523x based boards
[PATCH] m68knommu: 523x ColdFire processor init code Low level initialization code for the 523x ColdFire processor family. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-02 08:42:52 +08:00
*
Fix common misspellings Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 09:57:33 +08:00
* Sub-architcture dependent initialization code for the Freescale
[PATCH] m68knommu: 523x ColdFire processor init code Low level initialization code for the 523x ColdFire processor family. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-02 08:42:52 +08:00
* 523x CPUs.
*
* Copyright (C) 1999-2005, Greg Ungerer (gerg@snapgear.com)
* Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
*/
/***************************************************************************/
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
m68knommu: platform setup for 523x ColdFire parts Switch to platform style configuration for 523x ColdFire parts. Initial support is for the UARTs. DMA support moved to common code for all ColdFire parts. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-01 15:34:15 +08:00
#include <linux/io.h>
[PATCH] m68knommu: 523x ColdFire processor init code Low level initialization code for the 523x ColdFire processor family. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-02 08:42:52 +08:00
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
m68knommu: add clock definitions for 523x ColdFire CPU types Add a base set of clocks for the 523x ColdFire CPU types. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-07-13 13:57:38 +08:00
#include <asm/mcfclk.h>
/***************************************************************************/
DEFINE_CLK(pll, "pll.0", MCF_CLK);
DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
DEFINE_CLK(mcfpit0, "mcfpit.0", MCF_CLK);
DEFINE_CLK(mcfpit1, "mcfpit.1", MCF_CLK);
DEFINE_CLK(mcfpit2, "mcfpit.2", MCF_CLK);
DEFINE_CLK(mcfpit3, "mcfpit.3", MCF_CLK);
DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
DEFINE_CLK(mcfuart2, "mcfuart.2", MCF_BUSCLK);
m68knommu: Add qspi clk for Coldfire SoCs without real clks. Since we now have fake clks on devices without real clocks, we need clks defined for qspi for the qspi driver to work on those devices. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-15 01:06:29 +08:00
DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK);
m68knommu: add clock definitions for 523x ColdFire CPU types Add a base set of clocks for the 523x ColdFire CPU types. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-07-13 13:57:38 +08:00
DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK);
m68knommu: platform support for i2c devices on ColdFire SoC These changes based on work by Steven King <sfking@fdwdc.com> to support the i2c hardware modules on ColdFire SoC family devices. This is the per SoC hardware support. Contains a common platform device setup. Each of the SoC family members tends to have some minor local setup required to initialize the module. But all ColdFire family members use the same i2c hardware module. This i2c hardware module is the same as used in the Freescale iMX ARM based family of SoC devices. Steven's original patches were based on using a new and different i2c-coldfire.c driver. But this is not neccessary as we can use the existing Linux i2c-imx.c driver with no change required to it. And this patch is now based on using the existing i2c-imx driver. This patch only contains the ColdFire platform changes. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Tested-by: Angelo Dureghello <angelo@sysam.it>
2014-07-01 00:53:19 +08:00
DEFINE_CLK(mcfi2c0, "imx1-i2c.0", MCF_BUSCLK);
m68knommu: add clock definitions for 523x ColdFire CPU types Add a base set of clocks for the 523x ColdFire CPU types. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-07-13 13:57:38 +08:00
struct clk *mcf_clks[] = {
&clk_pll,
&clk_sys,
&clk_mcfpit0,
&clk_mcfpit1,
&clk_mcfpit2,
&clk_mcfpit3,
&clk_mcfuart0,
&clk_mcfuart1,
&clk_mcfuart2,
m68knommu: Add qspi clk for Coldfire SoCs without real clks. Since we now have fake clks on devices without real clocks, we need clks defined for qspi for the qspi driver to work on those devices. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-15 01:06:29 +08:00
&clk_mcfqspi0,
m68knommu: add clock definitions for 523x ColdFire CPU types Add a base set of clocks for the 523x ColdFire CPU types. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-07-13 13:57:38 +08:00
&clk_fec0,
m68knommu: platform support for i2c devices on ColdFire SoC These changes based on work by Steven King <sfking@fdwdc.com> to support the i2c hardware modules on ColdFire SoC family devices. This is the per SoC hardware support. Contains a common platform device setup. Each of the SoC family members tends to have some minor local setup required to initialize the module. But all ColdFire family members use the same i2c hardware module. This i2c hardware module is the same as used in the Freescale iMX ARM based family of SoC devices. Steven's original patches were based on using a new and different i2c-coldfire.c driver. But this is not neccessary as we can use the existing Linux i2c-imx.c driver with no change required to it. And this patch is now based on using the existing i2c-imx driver. This patch only contains the ColdFire platform changes. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Tested-by: Angelo Dureghello <angelo@sysam.it>
2014-07-01 00:53:19 +08:00
&clk_mcfi2c0,
m68knommu: add clock definitions for 523x ColdFire CPU types Add a base set of clocks for the 523x ColdFire CPU types. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-07-13 13:57:38 +08:00
NULL
};
[PATCH] m68knommu: 523x ColdFire processor init code Low level initialization code for the 523x ColdFire processor family. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-02 08:42:52 +08:00
/***************************************************************************/
m68knommu: Coldfire QSPI platform support Since Grant has added the coldfire-qspi driver to next-spi, here is the platform support for the parts that have qspi hardware. This sets up gpio to do the spi chip select using the default chip select pins; it should be trivial for boards that require different or additional spi chip selects to use other gpios as needed. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2010-01-23 04:43:03 +08:00
static void __init m523x_qspi_init(void)
{
m68knommu: qspi declutter. Move the check for the QSPI config option inside the function body. If the option is not enabled, the compiler will optimize away the empty function body so we can remove the other check for the config option. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-15 01:07:55 +08:00
#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
m68knommu: Coldfire QSPI platform support Since Grant has added the coldfire-qspi driver to next-spi, here is the platform support for the parts that have qspi hardware. This sets up gpio to do the spi chip select using the default chip select pins; it should be trivial for boards that require different or additional spi chip selects to use other gpios as needed. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2010-01-23 04:43:03 +08:00
u16 par;
/* setup QSPS pins for QSPI with gpio CS control */
writeb(0x1f, MCFGPIO_PAR_QSPI);
/* and CS2 & CS3 as gpio */
par = readw(MCFGPIO_PAR_TIMER);
par &= 0x3f3f;
writew(par, MCFGPIO_PAR_TIMER);
m68knommu: enable qspi support when SPI_COLDFIRE_QSPI = m Enable Coldfire QSPI support when SPI_COLDFIRE_QSPI is built as a module. This version of the patch combines changes to the config files and device.c and uses IF_ENABLED (thanks to Sam Ravnborg for the suggestion). Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-05-07 03:22:53 +08:00
#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
m68knommu: qspi declutter. Move the check for the QSPI config option inside the function body. If the option is not enabled, the compiler will optimize away the empty function body so we can remove the other check for the config option. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-15 01:07:55 +08:00
}
[PATCH] m68knommu: 523x ColdFire processor init code Low level initialization code for the 523x ColdFire processor family. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-02 08:42:52 +08:00
m68knommu: platform setup for 523x ColdFire parts Switch to platform style configuration for 523x ColdFire parts. Initial support is for the UARTs. DMA support moved to common code for all ColdFire parts. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-01 15:34:15 +08:00
/***************************************************************************/
m68knommu: platform support for i2c devices on ColdFire SoC These changes based on work by Steven King <sfking@fdwdc.com> to support the i2c hardware modules on ColdFire SoC family devices. This is the per SoC hardware support. Contains a common platform device setup. Each of the SoC family members tends to have some minor local setup required to initialize the module. But all ColdFire family members use the same i2c hardware module. This i2c hardware module is the same as used in the Freescale iMX ARM based family of SoC devices. Steven's original patches were based on using a new and different i2c-coldfire.c driver. But this is not neccessary as we can use the existing Linux i2c-imx.c driver with no change required to it. And this patch is now based on using the existing i2c-imx driver. This patch only contains the ColdFire platform changes. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Tested-by: Angelo Dureghello <angelo@sysam.it>
2014-07-01 00:53:19 +08:00
static void __init m523x_i2c_init(void)
{
#if IS_ENABLED(CONFIG_I2C_IMX)
u8 par;
/* setup Port AS Pin Assignment Register for I2C */
/* set PASPA0 to SCL and PASPA1 to SDA */
par = readb(MCFGPIO_PAR_FECI2C);
par |= 0x0f;
writeb(par, MCFGPIO_PAR_FECI2C);
#endif /* IS_ENABLED(CONFIG_I2C_IMX) */
}
/***************************************************************************/
m68knommu: set multi-function pins for ethernet when enabled The ethernet pins on the 532x ColdFire CPU family are multi-function pins. We need to enable them as ethernet pins when using the FEC ethernet driver. Bug report, and older patch, from timothee@manaud.net. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-08-12 14:14:43 +08:00
static void __init m523x_fec_init(void)
{
/* Set multi-function pins to ethernet use */
m68knommu: fix multi-function pin setup for FEC module on ColdFire 523x The multi-function pin setup code for the FEC ethernet module is using just plain wrong. Looks like it was cut-and-pasted from other init code. It has hard coded register addresses that are incorrect for the 523x, and it is manipulating bits that don't make sense. Add proper register definitions for the Pin Assignment registers of the 532x, and then use them to fix the setup code for the FEC hardware module. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-09-18 10:14:18 +08:00
writeb(readb(MCFGPIO_PAR_FECI2C) | 0xf0, MCFGPIO_PAR_FECI2C);
m68knommu: set multi-function pins for ethernet when enabled The ethernet pins on the 532x ColdFire CPU family are multi-function pins. We need to enable them as ethernet pins when using the FEC ethernet driver. Bug report, and older patch, from timothee@manaud.net. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-08-12 14:14:43 +08:00
}
/***************************************************************************/
m68knommu: platform setup for 523x ColdFire parts Switch to platform style configuration for 523x ColdFire parts. Initial support is for the UARTs. DMA support moved to common code for all ColdFire parts. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-01 15:34:15 +08:00
void __init config_BSP(char *commandp, int size)
[PATCH] m68knommu: 523x ColdFire processor init code Low level initialization code for the 523x ColdFire processor family. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-02 08:42:52 +08:00
{
m68knommu: modify timer init code to make it consistent with m68k code With a few small changes we can make the m68knommu timer init code the same as the m68k code. By using the mach_sched_init function pointer and reworking the current timer initializers to keep track of the common m68k timer_interrupt() handler we end up with almost identical code for m68knommu. This will allow us to more easily merge the mmu and non-mmu m68k time.c in future patches. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-01-23 13:34:58 +08:00
mach_sched_init = hw_timer_init;
m68knommu: clean up init code in ColdFire 523x startup We can move the QSPI init call to the more general config_BSP() code on the 523x platorm setup code. Then we can remove the initcall code all together. We can also remove the un-needed include of mcfuart.h while we are cleaning up here too. Also I noticed that we are not calling the fec_init() code here, and we should be doing that. Put that back in too. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 11:00:02 +08:00
m523x_fec_init();
m68knommu: Coldfire QSPI platform support Since Grant has added the coldfire-qspi driver to next-spi, here is the platform support for the parts that have qspi hardware. This sets up gpio to do the spi chip select using the default chip select pins; it should be trivial for boards that require different or additional spi chip selects to use other gpios as needed. Signed-off-by: Steven King <sfking@fdwdc.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2010-01-23 04:43:03 +08:00
m523x_qspi_init();
m68knommu: platform support for i2c devices on ColdFire SoC These changes based on work by Steven King <sfking@fdwdc.com> to support the i2c hardware modules on ColdFire SoC family devices. This is the per SoC hardware support. Contains a common platform device setup. Each of the SoC family members tends to have some minor local setup required to initialize the module. But all ColdFire family members use the same i2c hardware module. This i2c hardware module is the same as used in the Freescale iMX ARM based family of SoC devices. Steven's original patches were based on using a new and different i2c-coldfire.c driver. But this is not neccessary as we can use the existing Linux i2c-imx.c driver with no change required to it. And this patch is now based on using the existing i2c-imx driver. This patch only contains the ColdFire platform changes. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Tested-by: Angelo Dureghello <angelo@sysam.it>
2014-07-01 00:53:19 +08:00
m523x_i2c_init();
m68knommu: platform setup for 523x ColdFire parts Switch to platform style configuration for 523x ColdFire parts. Initial support is for the UARTs. DMA support moved to common code for all ColdFire parts. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-01 15:34:15 +08:00
}
/***************************************************************************/
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