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authorMasahiro Yamada <yamada.masahiro@socionext.com>2016-03-18 16:41:43 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2016-03-24 01:42:13 +0900
commitea65c98050f0f13f933119e1d073c8a138481ee4 (patch)
tree47fd29a996ceb41bfb974dc09b02ae518d3412d6 /arch/arm/mach-uniphier/bcu/bcu-ld4.c
parent013dcc7863b990f7bd0680e1ced320bf6a963e8f (diff)
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ARM: uniphier: drop PH1- prefix from CONFIG options and file names
The current CONFIG names like "CONFIG_ARCH_UNIPHIER_PH1_PRO4" is too long. It would not hurt to drop "PH1_" because "UNIPHIER_" already well specifies the SoC family. Also, rename files for consistency. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'arch/arm/mach-uniphier/bcu/bcu-ld4.c')
-rw-r--r--arch/arm/mach-uniphier/bcu/bcu-ld4.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/bcu/bcu-ld4.c b/arch/arm/mach-uniphier/bcu/bcu-ld4.c
new file mode 100644
index 0000000000..bbe8a74ce3
--- /dev/null
+++ b/arch/arm/mach-uniphier/bcu/bcu-ld4.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <linux/io.h>
+
+#include "../init.h"
+#include "bcu-regs.h"
+
+#define ch(x) ((x) >= 32 ? 0 : (x) < 0 ? 0x11111111 : 0x11111111 << (x))
+
+int ph1_ld4_bcu_init(const struct uniphier_board_data *bd)
+{
+ int shift;
+
+ writel(0x44444444, BCSCR0); /* 0x20000000-0x3fffffff: ASM bus */
+ writel(0x11111111, BCSCR2); /* 0x80000000-0x9fffffff: IPPC/IPPD-bus */
+ writel(0x11111111, BCSCR3); /* 0xa0000000-0xbfffffff: IPPC/IPPD-bus */
+ writel(0x11111111, BCSCR4); /* 0xc0000000-0xdfffffff: IPPC/IPPD-bus */
+ writel(0x11111111, BCSCR5); /* 0xe0000000-0Xffffffff: IPPC/IPPD-bus */
+
+ /* Specify DDR channel */
+ shift = (bd->dram_ch[1].base - bd->dram_ch[0].base) / 0x04000000 * 4;
+ writel(ch(shift), BCIPPCCHR2); /* 0x80000000-0x9fffffff */
+
+ shift -= 32;
+ writel(ch(shift), BCIPPCCHR3); /* 0xa0000000-0xbfffffff */
+
+ shift -= 32;
+ writel(ch(shift), BCIPPCCHR4); /* 0xc0000000-0xdfffffff */
+
+ return 0;
+}
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