From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 11 Apr 2024 10:27:49 +0200
Subject: Adding upstream version 6.6.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/m68k/coldfire/m54xx.c | 100 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 arch/m68k/coldfire/m54xx.c

(limited to 'arch/m68k/coldfire/m54xx.c')

diff --git a/arch/m68k/coldfire/m54xx.c b/arch/m68k/coldfire/m54xx.c
new file mode 100644
index 0000000000..8e3c8fee83
--- /dev/null
+++ b/arch/m68k/coldfire/m54xx.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0
+/***************************************************************************/
+
+/*
+ *	m54xx.c  -- platform support for ColdFire 54xx based boards
+ *
+ *	Copyright (C) 2010, Philippe De Muyter <phdm@macqel.be>
+ */
+
+/***************************************************************************/
+
+#include <linux/clkdev.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/clk.h>
+#include <linux/memblock.h>
+#include <asm/pgalloc.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/m54xxsim.h>
+#include <asm/mcfuart.h>
+#include <asm/mcfclk.h>
+#include <asm/m54xxgpt.h>
+#ifdef CONFIG_MMU
+#include <asm/mmu_context.h>
+#endif
+
+/***************************************************************************/
+
+DEFINE_CLK(pll, "pll.0", MCF_CLK);
+DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
+
+static struct clk_lookup m54xx_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "pll.0", &clk_pll),
+	CLKDEV_INIT(NULL, "sys.0", &clk_sys),
+	CLKDEV_INIT("mcfslt.0", NULL, &clk_sys),
+	CLKDEV_INIT("mcfslt.1", NULL, &clk_sys),
+	CLKDEV_INIT("mcfuart.0", NULL, &clk_sys),
+	CLKDEV_INIT("mcfuart.1", NULL, &clk_sys),
+	CLKDEV_INIT("mcfuart.2", NULL, &clk_sys),
+	CLKDEV_INIT("mcfuart.3", NULL, &clk_sys),
+	CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys),
+};
+
+/***************************************************************************/
+
+static void __init m54xx_uarts_init(void)
+{
+	/* enable io pins */
+	__raw_writeb(MCF_PAR_PSC_TXD | MCF_PAR_PSC_RXD, MCFGPIO_PAR_PSC0);
+	__raw_writeb(MCF_PAR_PSC_TXD | MCF_PAR_PSC_RXD | MCF_PAR_PSC_RTS_RTS,
+		MCFGPIO_PAR_PSC1);
+	__raw_writeb(MCF_PAR_PSC_TXD | MCF_PAR_PSC_RXD | MCF_PAR_PSC_RTS_RTS |
+		MCF_PAR_PSC_CTS_CTS, MCFGPIO_PAR_PSC2);
+	__raw_writeb(MCF_PAR_PSC_TXD | MCF_PAR_PSC_RXD, MCFGPIO_PAR_PSC3);
+}
+
+/***************************************************************************/
+
+static void __init m54xx_i2c_init(void)
+{
+#if IS_ENABLED(CONFIG_I2C_IMX)
+	u32 r;
+
+	/* set the fec/i2c/irq pin assignment register for i2c */
+	r = readl(MCF_PAR_FECI2CIRQ);
+	r |= MCF_PAR_FECI2CIRQ_SDA | MCF_PAR_FECI2CIRQ_SCL;
+	writel(r, MCF_PAR_FECI2CIRQ);
+#endif /* IS_ENABLED(CONFIG_I2C_IMX) */
+}
+
+/***************************************************************************/
+
+static void mcf54xx_reset(void)
+{
+	/* disable interrupts and enable the watchdog */
+	asm("movew #0x2700, %sr\n");
+	__raw_writel(0, MCF_GPT_GMS0);
+	__raw_writel(MCF_GPT_GCIR_CNT(1), MCF_GPT_GCIR0);
+	__raw_writel(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS(4),
+		MCF_GPT_GMS0);
+}
+
+/***************************************************************************/
+
+void __init config_BSP(char *commandp, int size)
+{
+	mach_reset = mcf54xx_reset;
+	mach_sched_init = hw_timer_init;
+	m54xx_uarts_init();
+	m54xx_i2c_init();
+
+	clkdev_add_table(m54xx_clk_lookup, ARRAY_SIZE(m54xx_clk_lookup));
+}
+
+/***************************************************************************/
-- 
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