diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2011-06-07 07:02:52 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-07-04 10:55:26 +0200 |
| commit | a6e961c2923ec7a5351c16cd202d9376e44eaa3b (patch) | |
| tree | 8b26b8084b4ca248ec88e8c248f94485470d53c3 /arch/arm | |
| parent | a682b3f76bf441e7ccafa402b60ca30bc62751df (diff) | |
MX5: Introduce a function for setting the chip select size
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/mx5/soc.c | 30 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx5/imx-regs.h | 5 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx5/sys_proto.h | 2 |
3 files changed, 36 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/mx5/soc.c b/arch/arm/cpu/armv7/mx5/soc.c index 40b8b5640b..c6106d5210 100644 --- a/arch/arm/cpu/armv7/mx5/soc.c +++ b/arch/arm/cpu/armv7/mx5/soc.c @@ -163,6 +163,36 @@ int cpu_mmc_init(bd_t *bis) #endif } +void set_chipselect_size(int const cs_size) +{ + unsigned int reg; + struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; + reg = readl(&iomuxc_regs->gpr1); + + switch (cs_size) { + case CS0_128: + reg &= ~0x7; /* CS0=128MB, CS1=0, CS2=0, CS3=0 */ + reg |= 0x5; + break; + case CS0_64M_CS1_64M: + reg &= ~0x3F; /* CS0=64MB, CS1=64MB, CS2=0, CS3=0 */ + reg |= 0x1B; + break; + case CS0_64M_CS1_32M_CS2_32M: + reg &= ~0x1FF; /* CS0=64MB, CS1=32MB, CS2=32MB, CS3=0 */ + reg |= 0x4B; + break; + case CS0_32M_CS1_32M_CS2_32M_CS3_32M: + reg &= ~0xFFF; /* CS0=32MB, CS1=32MB, CS2=32MB, CS3=32MB */ + reg |= 0x249; + break; + default: + printf("Unknown chip select size: %d\n", cs_size); + break; + } + + writel(reg, &iomuxc_regs->gpr1); +} void reset_cpu(ulong addr) { diff --git a/arch/arm/include/asm/arch-mx5/imx-regs.h b/arch/arm/include/asm/arch-mx5/imx-regs.h index 1dac6fa145..9589a62a12 100644 --- a/arch/arm/include/asm/arch-mx5/imx-regs.h +++ b/arch/arm/include/asm/arch-mx5/imx-regs.h @@ -214,6 +214,11 @@ #define WDOG_EN (1 << 8) #define WDOG_LIMIT(x) (((x) & 0x3) << 9) +#define CS0_128 0 +#define CS0_64M_CS1_64M 1 +#define CS0_64M_CS1_32M_CS2_32M 2 +#define CS0_32M_CS1_32M_CS2_32M_CS3_32M 3 + /* * Number of GPIO pins per port */ diff --git a/arch/arm/include/asm/arch-mx5/sys_proto.h b/arch/arm/include/asm/arch-mx5/sys_proto.h index f687503cad..ce63675629 100644 --- a/arch/arm/include/asm/arch-mx5/sys_proto.h +++ b/arch/arm/include/asm/arch-mx5/sys_proto.h @@ -27,5 +27,5 @@ u32 get_cpu_rev(void); #define is_soc_rev(rev) ((get_cpu_rev() & 0xFF) - rev) void sdelay(unsigned long); - +void set_chipselect_size(int const); #endif |