diff options
Diffstat (limited to 'arch/arm/imx-common/cpu.c')
| -rw-r--r-- | arch/arm/imx-common/cpu.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c index 09fc22760d..24740b8603 100644 --- a/arch/arm/imx-common/cpu.c +++ b/arch/arm/imx-common/cpu.c @@ -187,3 +187,34 @@ void arch_preboot_os(void) ipuv3_fb_shutdown(); } #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->gpr[1]); + + 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->gpr[1]); +} |