diff options
| author | Heiko Schocher <hs@denx.de> | 2013-06-04 11:00:57 +0200 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-06-18 10:40:06 -0400 |
| commit | 7ea7f689cab5bf715255e22c31aeefb23259afe5 (patch) | |
| tree | 89ddaebb7a3694b12ed2142ddcffca11277d2532 /arch | |
| parent | 7b9c5d0bfd906a57a46336b5505550024a8a761f (diff) | |
arm, am33xx: move uart soft reset code to common place
move uart soft reset code to common place and call
this function from board code, instead of copy and paste
this code for every board.
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Matt Porter <mporter@ti.com>
Cc: Lars Poeschel <poeschel@lemonage.de>
Cc: Tom Rini <trini@ti.com>
Cc: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Acked-by: Tom Rini <trini@ti.com>
[trini: Fix igep0033 build, remove 'regval' on pcm051]
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/am33xx/board.c | 22 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-am33xx/sys_proto.h | 1 |
2 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c index d3b3612432..b935a29a3c 100644 --- a/arch/arm/cpu/armv7/am33xx/board.c +++ b/arch/arm/cpu/armv7/am33xx/board.c @@ -166,4 +166,26 @@ void rtc32k_enable(void) /* Enable the RTC 32K OSC by setting bits 3 and 6. */ writel((1 << 3) | (1 << 6), &rtc->osc); } + +#define UART_RESET (0x1 << 1) +#define UART_CLK_RUNNING_MASK 0x1 +#define UART_SMART_IDLE_EN (0x1 << 0x3) + +void uart_soft_reset(void) +{ + struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE; + u32 regval; + + regval = readl(&uart_base->uartsyscfg); + regval |= UART_RESET; + writel(regval, &uart_base->uartsyscfg); + while ((readl(&uart_base->uartsyssts) & + UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK) + ; + + /* Disable smart idle */ + regval = readl(&uart_base->uartsyscfg); + regval |= UART_SMART_IDLE_EN; + writel(regval, &uart_base->uartsyscfg); +} #endif diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h index cbbb54e39f..307ac28245 100644 --- a/arch/arm/include/asm/arch-am33xx/sys_proto.h +++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h @@ -44,4 +44,5 @@ void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base, void omap_nand_switch_ecc(uint32_t, uint32_t); void rtc32k_enable(void); +void uart_soft_reset(void); #endif |