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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/m68k/coldfire/m523x.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/m68k/coldfire/m523x.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/arch/m68k/coldfire/m523x.c b/arch/m68k/coldfire/m523x.c new file mode 100644 index 000000000..83a997313 --- /dev/null +++ b/arch/m68k/coldfire/m523x.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0 +/***************************************************************************/ + +/* + * m523x.c -- platform support for ColdFire 523x based boards + * + * Sub-architcture dependent initialization code for the Freescale + * 523x CPUs. + * + * Copyright (C) 1999-2005, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/clkdev.h> +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfclk.h> + +/***************************************************************************/ + +DEFINE_CLK(pll, "pll.0", MCF_CLK); +DEFINE_CLK(sys, "sys.0", MCF_BUSCLK); + +static struct clk_lookup m523x_clk_lookup[] = { + CLKDEV_INIT(NULL, "pll.0", &clk_pll), + CLKDEV_INIT(NULL, "sys.0", &clk_sys), + CLKDEV_INIT("mcfpit.0", NULL, &clk_pll), + CLKDEV_INIT("mcfpit.1", NULL, &clk_pll), + CLKDEV_INIT("mcfpit.2", NULL, &clk_pll), + CLKDEV_INIT("mcfpit.3", NULL, &clk_pll), + CLKDEV_INIT("mcfuart.0", NULL, &clk_sys), + CLKDEV_INIT("mcfuart.1", NULL, &clk_sys), + CLKDEV_INIT("mcfuart.2", NULL, &clk_sys), + CLKDEV_INIT("mcfqspi.0", NULL, &clk_sys), + CLKDEV_INIT("fec.0", NULL, &clk_sys), + CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys), +}; + +/***************************************************************************/ + +static void __init m523x_qspi_init(void) +{ +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) + 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); +#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ +} + +/***************************************************************************/ + +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) */ +} + +/***************************************************************************/ + +static void __init m523x_fec_init(void) +{ + /* Set multi-function pins to ethernet use */ + writeb(readb(MCFGPIO_PAR_FECI2C) | 0xf0, MCFGPIO_PAR_FECI2C); +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_sched_init = hw_timer_init; + m523x_fec_init(); + m523x_qspi_init(); + m523x_i2c_init(); + + clkdev_add_table(m523x_clk_lookup, ARRAY_SIZE(m523x_clk_lookup)); +} + +/***************************************************************************/ |