diff options
Diffstat (limited to 'arch/arm/mach-omap/am3xxx.c')
| -rw-r--r-- | arch/arm/mach-omap/am3xxx.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-omap/am3xxx.c b/arch/arm/mach-omap/am3xxx.c new file mode 100644 index 0000000000..75965a8e0e --- /dev/null +++ b/arch/arm/mach-omap/am3xxx.c @@ -0,0 +1,32 @@ +#include <common.h> +#include <io.h> +#include <mach/am3xxx-silicon.h> + +/* UART Defines */ +#define UART_SYSCFG_OFFSET 0x54 +#define UART_SYSSTS_OFFSET 0x58 + +#define UART_CLK_RUNNING_MASK 0x1 +#define UART_RESET (0x1 << 1) +#define UART_SMART_IDLE_EN (0x1 << 0x3) + +void am3xxx_uart_soft_reset(void __iomem *uart_base) +{ + int reg; + + reg = readl(uart_base + UART_SYSCFG_OFFSET); + reg |= UART_RESET; + writel(reg, (uart_base + UART_SYSCFG_OFFSET)); + + while ((readl(uart_base + UART_SYSSTS_OFFSET) & + UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK) + ; + + /* Disable smart idle */ + reg = readl((uart_base + UART_SYSCFG_OFFSET)); + reg |= UART_SMART_IDLE_EN; + writel(reg, (uart_base + UART_SYSCFG_OFFSET)); +} + +void am33xx_uart_soft_reset(void __iomem *uart_base) + __alias(am3xxx_uart_soft_reset);
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