summaryrefslogtreecommitdiffstats
path: root/arch/m68k/coldfire/m527x.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--arch/m68k/coldfire/m527x.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/arch/m68k/coldfire/m527x.c b/arch/m68k/coldfire/m527x.c
new file mode 100644
index 000000000..037f3e520
--- /dev/null
+++ b/arch/m68k/coldfire/m527x.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0
+/***************************************************************************/
+
+/*
+ * m527x.c -- platform support for ColdFire 527x based boards
+ *
+ * Sub-architcture dependent initialization code for the Freescale
+ * 5270/5271 and 5274/5275 CPUs.
+ *
+ * Copyright (C) 1999-2004, Greg Ungerer (gerg@snapgear.com)
+ * Copyright (C) 2001-2004, 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/mcfuart.h>
+#include <asm/mcfclk.h>
+
+/***************************************************************************/
+
+DEFINE_CLK(pll, "pll.0", MCF_CLK);
+DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
+
+static struct clk_lookup m527x_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("fec.1", NULL, &clk_sys),
+ CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys),
+};
+
+/***************************************************************************/
+
+static void __init m527x_qspi_init(void)
+{
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
+#if defined(CONFIG_M5271)
+ 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);
+#elif defined(CONFIG_M5275)
+ /* setup QSPS pins for QSPI with gpio CS control */
+ writew(0x003e, MCFGPIO_PAR_QSPI);
+#endif
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
+}
+
+/***************************************************************************/
+
+static void __init m527x_i2c_init(void)
+{
+#if IS_ENABLED(CONFIG_I2C_IMX)
+#if defined(CONFIG_M5271)
+ u8 par;
+
+ /* setup Port FECI2C Pin Assignment Register for I2C */
+ /* set PAR_SCL to SCL and PAR_SDA to SDA */
+ par = readb(MCFGPIO_PAR_FECI2C);
+ par |= 0x0f;
+ writeb(par, MCFGPIO_PAR_FECI2C);
+#elif defined(CONFIG_M5275)
+ u16 par;
+
+ /* setup Port FECI2C Pin Assignment Register for I2C */
+ /* set PAR_SCL to SCL and PAR_SDA to SDA */
+ par = readw(MCFGPIO_PAR_FECI2C);
+ par |= 0x0f;
+ writew(par, MCFGPIO_PAR_FECI2C);
+#endif
+#endif /* IS_ENABLED(CONFIG_I2C_IMX) */
+}
+
+/***************************************************************************/
+
+static void __init m527x_uarts_init(void)
+{
+ u16 sepmask;
+
+ /*
+ * External Pin Mask Setting & Enable External Pin for Interface
+ */
+ sepmask = readw(MCFGPIO_PAR_UART);
+ sepmask |= UART0_ENABLE_MASK | UART1_ENABLE_MASK | UART2_ENABLE_MASK;
+ writew(sepmask, MCFGPIO_PAR_UART);
+}
+
+/***************************************************************************/
+
+static void __init m527x_fec_init(void)
+{
+ u8 v;
+
+ /* Set multi-function pins to ethernet mode for fec0 */
+#if defined(CONFIG_M5271)
+ v = readb(MCFGPIO_PAR_FECI2C);
+ writeb(v | 0xf0, MCFGPIO_PAR_FECI2C);
+#else
+ u16 par;
+
+ par = readw(MCFGPIO_PAR_FECI2C);
+ writew(par | 0xf00, MCFGPIO_PAR_FECI2C);
+ v = readb(MCFGPIO_PAR_FEC0HL);
+ writeb(v | 0xc0, MCFGPIO_PAR_FEC0HL);
+
+ /* Set multi-function pins to ethernet mode for fec1 */
+ par = readw(MCFGPIO_PAR_FECI2C);
+ writew(par | 0xa0, MCFGPIO_PAR_FECI2C);
+ v = readb(MCFGPIO_PAR_FEC1HL);
+ writeb(v | 0xc0, MCFGPIO_PAR_FEC1HL);
+#endif
+}
+
+/***************************************************************************/
+
+void __init config_BSP(char *commandp, int size)
+{
+ mach_sched_init = hw_timer_init;
+ m527x_uarts_init();
+ m527x_fec_init();
+ m527x_qspi_init();
+ m527x_i2c_init();
+ clkdev_add_table(m527x_clk_lookup, ARRAY_SIZE(m527x_clk_lookup));
+}
+
+/***************************************************************************/