Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 46 insertions, 0 deletions

diff --git a/roms/u-boot/arch/arm/cpu/arm1136/mx35/timer.c b/roms/u-boot/arch/arm/cpu/arm1136/mx35/timer.c
new file mode 100644
index 000000000..f2541c398
--- /dev/null
+++ b/roms/u-boot/arch/arm/cpu/arm1136/mx35/timer.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2007
+ * Sascha Hauer, Pengutronix
+ *
+ * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
+ */
+
+#include <common.h>
+#include <init.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/ptrace.h>
+
+/* General purpose timers bitfields */
+#define GPTCR_SWR       (1<<15)	/* Software reset */
+#define GPTCR_FRR       (1<<9)	/* Freerun / restart */
+#define GPTCR_CLKSOURCE_32   (4<<6)	/* Clock source */
+#define GPTCR_TEN       (1)	/* Timer enable */
+
+/*
+ * nothing really to do with interrupts, just starts up a counter.
+ * The 32KHz 32-bit timer overruns in 134217 seconds
+ */
+int timer_init(void)
+{
+	int i;
+	struct gpt_regs *gpt = (struct gpt_regs *)GPT1_BASE_ADDR;
+	struct ccm_regs *ccm = (struct ccm_regs *)CCM_BASE_ADDR;
+
+	/* setup GP Timer 1 */
+	writel(GPTCR_SWR, &gpt->ctrl);
+
+	writel(readl(&ccm->cgr1) | 3 << MXC_CCM_CGR1_GPT_OFFSET, &ccm->cgr1);
+
+	for (i = 0; i < 100; i++)
+		writel(0, &gpt->ctrl); /* We have no udelay by now */
+	writel(0, &gpt->pre); /* prescaler = 1 */
+	/* Freerun Mode, 32KHz input */
+	writel(readl(&gpt->ctrl) | GPTCR_CLKSOURCE_32 | GPTCR_FRR,
+			&gpt->ctrl);
+	writel(readl(&gpt->ctrl) | GPTCR_TEN, &gpt->ctrl);
+
+	return 0;
+}