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authorArnd Bergmann <arnd@arndb.de>2019-04-15 22:17:12 +0200
committerOlof Johansson <olof@lixom.net>2019-04-28 23:08:44 -0700
commit5b7cc90496aaff4f0eb1750b91dedec342d69760 (patch)
treef97d41461a3019e2827903dff9160a20c926c092 /arch/arm/mach-ep93xx/hardware.h
parent67e38f578aaebf34fc1278bbe45a78ee8c73dd33 (diff)
downloadlwn-5b7cc90496aaff4f0eb1750b91dedec342d69760.tar.gz
lwn-5b7cc90496aaff4f0eb1750b91dedec342d69760.zip
ARM: ep93xx: move private headers out of mach/*
gpio-ep93xx.h, hardware.h, and platform.h are only used in arch/arm/mach-ep93xx, so we can move them one there and no longer expose them to device drivers. Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-ep93xx/hardware.h')
-rw-r--r--arch/arm/mach-ep93xx/hardware.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/hardware.h b/arch/arm/mach-ep93xx/hardware.h
new file mode 100644
index 000000000000..e7d850e04782
--- /dev/null
+++ b/arch/arm/mach-ep93xx/hardware.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * arch/arm/mach-ep93xx/include/mach/hardware.h
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include "platform.h"
+
+/*
+ * The EP93xx has two external crystal oscillators. To generate the
+ * required high-frequency clocks, the processor uses two phase-locked-
+ * loops (PLLs) to multiply the incoming external clock signal to much
+ * higher frequencies that are then divided down by programmable dividers
+ * to produce the needed clocks. The PLLs operate independently of one
+ * another.
+ */
+#define EP93XX_EXT_CLK_RATE 14745600
+#define EP93XX_EXT_RTC_RATE 32768
+
+#define EP93XX_KEYTCHCLK_DIV4 (EP93XX_EXT_CLK_RATE / 4)
+#define EP93XX_KEYTCHCLK_DIV16 (EP93XX_EXT_CLK_RATE / 16)
+
+#endif