diff options
| author |   Kuninori Morimoto <morimoto.kuninori@renesas.com> | 2010-02-18 17:58:19 +0900 |
|---|---|---|
| committer |   Paul Mundt <lethal@linux-sh.org> | 2010-02-18 18:24:17 +0900 |
| commit | 02624a17896036c663fd5992c22919af8dad93ed (patch) | |
| tree | 020cad981707bce697f43c671aaa24f4be3d2118 /arch/arm/mach-shmobile | |
| parent | ARM: mach-shmobile: ap4evb: Add SCIFA0 support (diff) | |
| download | linux-dev-02624a17896036c663fd5992c22919af8dad93ed.tar.xz linux-dev-02624a17896036c663fd5992c22919af8dad93ed.zip | |
ARM: mach-shmobile: ap4evb: Add tiny document
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/arm/mach-shmobile')
| -rw-r--r-- | arch/arm/mach-shmobile/board-ap4evb.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c index 4fd9ec8735d6..41bc2487de4d 100644 --- a/arch/arm/mach-shmobile/board-ap4evb.c +++ b/arch/arm/mach-shmobile/board-ap4evb.c @@ -35,6 +35,48 @@ #include <asm/mach/arch.h> #include <asm/mach/map.h> +/* + * Address Interface BusWidth note + * ------------------------------------------------------------------ + * 0x0000_0000 NOR Flash ROM (MCP) 16bit SW7 : bit1 = ON + * 0x0800_0000 user area - + * 0x1000_0000 NOR Flash ROM (MCP) 16bit SW7 : bit1 = OFF + * 0x1400_0000 Ether (LAN9220) 16bit + * 0x1600_0000 user area - cannot use with NAND + * 0x1800_0000 user area - + * 0x1A00_0000 - + * 0x4000_0000 LPDDR2-SDRAM (POP) 32bit + */ + +/* + * NOR Flash ROM + * + * SW1 | SW2 | SW7 | NOR Flash ROM + * bit1 | bit1 bit2 | bit1 | Memory allocation + * ------+------------+------+------------------ + * OFF | ON OFF | ON | Area 0 + * OFF | ON OFF | OFF | Area 4 + */ + +/* + * NAND Flash ROM + * + * SW1 | SW2 | SW7 | NAND Flash ROM + * bit1 | bit1 bit2 | bit2 | Memory allocation + * ------+------------+------+------------------ + * OFF | ON OFF | ON | FCE 0 + * OFF | ON OFF | OFF | FCE 1 + */ + +/* + * SMSC 9220 + * + * SW1 SMSC 9220 + * ----------------------- + * ON access disable + * OFF access enable + */ + /* MTD */ static struct mtd_partition nor_flash_partitions[] = { { |