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authorAlbert ARIBAUD <albert.u.boot@aribaud.net>2013-06-19 23:58:01 +0200
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2013-06-19 23:58:01 +0200
commitc2543a21df335484fa86bd652b5564d0ca90d5f6 (patch)
tree99dd2883487480688fbfcfb00a07d8cd21b85060 /arch/arm/cpu
parent69f14dc2fd64307f012381dd333a06001dec75dc (diff)
parentbf3b98a1886ef18d7e2e4f83fec17f6c8cc51eaf (diff)
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Merge branch 'u-boot-ti/master' into 'u-boot-arm/master'
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r--arch/arm/cpu/armv7/am33xx/board.c40
-rw-r--r--arch/arm/cpu/armv7/am33xx/clock_am33xx.c9
2 files changed, 47 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c
index 885fb2d..b935a29 100644
--- a/arch/arm/cpu/armv7/am33xx/board.c
+++ b/arch/arm/cpu/armv7/am33xx/board.c
@@ -149,3 +149,43 @@ int arch_misc_init(void)
#endif
return 0;
}
+
+#ifdef CONFIG_SPL_BUILD
+void rtc32k_enable(void)
+{
+ struct rtc_regs *rtc = (struct rtc_regs *)RTC_BASE;
+
+ /*
+ * Unlock the RTC's registers. For more details please see the
+ * RTC_SS section of the TRM. In order to unlock we need to
+ * write these specific values (keys) in this order.
+ */
+ writel(0x83e70b13, &rtc->kick0r);
+ writel(0x95a4f1e0, &rtc->kick1r);
+
+ /* 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/cpu/armv7/am33xx/clock_am33xx.c b/arch/arm/cpu/armv7/am33xx/clock_am33xx.c
index a1efc75..9c4d0b4 100644
--- a/arch/arm/cpu/armv7/am33xx/clock_am33xx.c
+++ b/arch/arm/cpu/armv7/am33xx/clock_am33xx.c
@@ -246,7 +246,7 @@ static void enable_per_clocks(void)
;
}
-static void mpu_pll_config(void)
+void mpu_pll_config_val(int mpull_m)
{
u32 clkmode, clksel, div_m2;
@@ -260,7 +260,7 @@ static void mpu_pll_config(void)
;
clksel = clksel & (~CLK_SEL_MASK);
- clksel = clksel | ((MPUPLL_M << CLK_SEL_SHIFT) | MPUPLL_N);
+ clksel = clksel | ((mpull_m << CLK_SEL_SHIFT) | MPUPLL_N);
writel(clksel, &cmwkup->clkseldpllmpu);
div_m2 = div_m2 & ~CLK_DIV_MASK;
@@ -274,6 +274,11 @@ static void mpu_pll_config(void)
;
}
+static void mpu_pll_config(void)
+{
+ mpu_pll_config_val(CONFIG_SYS_MPUCLK);
+}
+
static void core_pll_config(void)
{
u32 clkmode, clksel, div_m4, div_m5, div_m6;