at91: Add support for the AT91 slow clock controller
This is available on AT91SAM9G45. Add the peripheral address and flag
definitions.
Signed-off-by: Andre Renaud <andre@designa-electronics.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
diff --git a/arch/arm/mach-at91/include/mach/at91_sck.h b/arch/arm/mach-at91/include/mach/at91_sck.h
new file mode 100644
index 0000000..ce8e577
--- /dev/null
+++ b/arch/arm/mach-at91/include/mach/at91_sck.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2016 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef AT91_SCK_H
+#define AT91_SCK_H
+
+/*
+ * SCKCR flags
+ */
+#define AT91SAM9G45_SCKCR_RCEN (1 << 0) /* RC Oscillator Enable */
+#define AT91SAM9G45_SCKCR_OSC32EN (1 << 1) /* 32kHz Oscillator Enable */
+#define AT91SAM9G45_SCKCR_OSC32BYP (1 << 2) /* 32kHz Oscillator Bypass */
+#define AT91SAM9G45_SCKCR_OSCSEL (1 << 3) /* Slow Clock Selector */
+#define AT91SAM9G45_SCKCR_OSCSEL_RC (0 << 3)
+#define AT91SAM9G45_SCKCR_OSCSEL_32 (1 << 3)
+
+#endif
diff --git a/arch/arm/mach-at91/include/mach/at91sam9g45.h b/arch/arm/mach-at91/include/mach/at91sam9g45.h
index cf1c73f..5c32e24 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9g45.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9g45.h
@@ -109,6 +109,7 @@
#define ATMEL_BASE_RTT 0xfffffd20
#define ATMEL_BASE_PIT 0xfffffd30
#define ATMEL_BASE_WDT 0xfffffd40
+#define ATMEL_BASE_SCKCR 0xfffffd50
#define ATMEL_BASE_GPBR 0xfffffd60
#define ATMEL_BASE_RTC 0xfffffdb0
/* Reserved: 0xfffffdc0 - 0xffffffff */