diff options
| author | Shiraz Hashim <shiraz.hashim@st.com> | 2012-05-07 13:06:59 +0530 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-07-07 14:07:42 +0200 |
| commit | 7c885a0e5532abcd6bc802d21a7858420e5c127b (patch) | |
| tree | 9441156596340e8797fd535fc30a5cead8e7decf /arch/arm/cpu/arm926ejs/spear/cpu.c | |
| parent | 8337aa5c0b22bc9e1d8ae9d7b2270735670233bd (diff) | |
SPEAr: explicitly select clk src for UART
UART in u-boot intends to run on 48MHz clock supplied by USB PLL.
Explicitly select the intended clock source.
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'arch/arm/cpu/arm926ejs/spear/cpu.c')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/spear/cpu.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/cpu/arm926ejs/spear/cpu.c b/arch/arm/cpu/arm926ejs/spear/cpu.c index 9e074bc9eb..e299de3137 100644 --- a/arch/arm/cpu/arm926ejs/spear/cpu.c +++ b/arch/arm/cpu/arm926ejs/spear/cpu.c @@ -30,7 +30,7 @@ int arch_cpu_init(void) { struct misc_regs *const misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE; - u32 periph1_clken; + u32 periph1_clken, periph_clk_cfg; periph1_clken = readl(&misc_p->periph1_clken); @@ -42,6 +42,11 @@ int arch_cpu_init(void) #if defined(CONFIG_PL011_SERIAL) periph1_clken |= MISC_UART0ENB; + + periph_clk_cfg = readl(&misc_p->periph_clk_cfg); + periph_clk_cfg &= ~CONFIG_SPEAR_UARTCLKMSK; + periph_clk_cfg |= CONFIG_SPEAR_UART48M; + writel(periph_clk_cfg, &misc_p->periph_clk_cfg); #endif #if defined(CONFIG_DESIGNWARE_ETH) periph1_clken |= MISC_ETHENB; |