diff options
| -rw-r--r-- | cpu/arm_cortexa8/mx53/generic.c | 43 | ||||
| -rw-r--r-- | include/asm-arm/arch-mx53/mx53.h | 5 |
2 files changed, 48 insertions, 0 deletions
diff --git a/cpu/arm_cortexa8/mx53/generic.c b/cpu/arm_cortexa8/mx53/generic.c index d31d9b5..4283c7a 100644 --- a/cpu/arm_cortexa8/mx53/generic.c +++ b/cpu/arm_cortexa8/mx53/generic.c @@ -1076,3 +1076,46 @@ void enable_usb_phy1_clk(unsigned char enable) writel(reg, MXC_CCM_CCGR4); } +void ipu_clk_enable(void) +{ + unsigned int reg; + + /* IPU root clock deprived from AXI B */ + reg = readl(CCM_BASE_ADDR + CLKCTL_CBCMR); + reg &= ~0xC0; + reg |= 0x40; + writel(reg, CCM_BASE_ADDR + CLKCTL_CBCMR); + + reg = readl(CCM_BASE_ADDR + CLKCTL_CCGR5); + reg |= (0x3 << 10); + writel(reg, CCM_BASE_ADDR + CLKCTL_CCGR5); + + /* Handshake with IPU when certain clock rates are changed. */ + reg = readl(CCM_BASE_ADDR + CLKCTL_CCDR); + reg &= ~(0x1 << 21); + writel(reg, CCM_BASE_ADDR + CLKCTL_CCDR); + + /* Handshake with IPU when LPM is entered as its enabled. */ + reg = readl(CCM_BASE_ADDR + CLKCTL_CLPCR); + reg &= ~(0x1 << 18); + writel(reg, CCM_BASE_ADDR + CLKCTL_CLPCR); +} + +void ipu_clk_disable(void) +{ + unsigned int reg; + + reg = readl(CCM_BASE_ADDR + CLKCTL_CCGR5); + reg &= (0x3 << 10); + writel(reg, CCM_BASE_ADDR + CLKCTL_CCGR5); + + /* Handshake with IPU when certain clock rates are changed. */ + reg = readl(CCM_BASE_ADDR + CLKCTL_CCDR); + reg |= (0x1 << 21); + writel(reg, CCM_BASE_ADDR + CLKCTL_CCDR); + + /* Handshake with IPU when LPM is entered as its enabled. */ + reg = readl(CCM_BASE_ADDR + CLKCTL_CLPCR); + reg |= (0x1 << 18); + writel(reg, CCM_BASE_ADDR + CLKCTL_CLPCR); +} diff --git a/include/asm-arm/arch-mx53/mx53.h b/include/asm-arm/arch-mx53/mx53.h index 39babf9..037054d 100644 --- a/include/asm-arm/arch-mx53/mx53.h +++ b/include/asm-arm/arch-mx53/mx53.h @@ -40,6 +40,11 @@ #define IRAM_SIZE (IRAM_PARTITIONS*SZ_8K) /* 128KB */ /* + * IPU + */ +#define IPU_CTRL_BASE_ADDR 0x0 + +/* * NFC */ #define NFC_BASE_ADDR_AXI 0xF7FF0000 /* NAND flash AXI */ |