Merge branch 'master' of git://git.denx.de/u-boot-mpc5xxx

[u-boot] / arch / arm / cpu / armv7 / omap3 / clock.c

diff --git a/arch/arm/cpu/armv7/omap3/clock.c b/arch/arm/cpu/armv7/omap3/clock.c
index e0d65c7a4abca53006f58ca679fa6e657f82579e..81cc8597803e99a65ef26e56faf1729f44217490 100644 (file)
--- a/arch/arm/cpu/armv7/omap3/clock.c
+++ b/arch/arm/cpu/armv7/omap3/clock.c
@@ -27,7 +27,7 @@
 
 #include <common.h>
 #include <asm/io.h>
-#include <asm/arch/clocks.h>
+#include <asm/arch/clock.h>
 #include <asm/arch/clocks_omap3.h>
 #include <asm/arch/mem.h>
 #include <asm/arch/sys_proto.h>
@@ -572,6 +572,22 @@ void prcm_init(void)
        }
 
        if (get_cpu_family() == CPU_OMAP36XX) {
+               /*
+                * In warm reset conditions on OMAP36xx/AM/DM37xx
+                * the rom code incorrectly sets the DPLL4 clock
+                * input divider to /6.5. Section 3.5.3.3.3.2.1 of
+                * the AM/DM37x TRM explains that the /6.5 divider
+                * is used only when the input clock is 13MHz.
+                *
+                * If the part is in this cpu family *and* the input
+                * clock *is not* 13 MHz, then reset the DPLL4 clock
+                * input divider to /1 as it should never set to /6.5
+                * in this case.
+                */
+               if (sys_clkin_sel != 1) /* 13 MHz */
+                       /* Bit 8: DPLL4_CLKINP_DIV */
+                       sr32(&prm_base->clksrc_ctrl, 8, 1, 0);
+
                /* Unlock MPU DPLL (slows things down, and needed later) */
                sr32(&prcm_base->clken_pll_mpu, 0, 3, PLL_LOW_POWER_BYPASS);
                wait_on_value(ST_MPU_CLK, 0, &prcm_base->idlest_pll_mpu,
@@ -626,6 +642,26 @@ void prcm_init(void)
        sdelay(5000);
 }
 
+/*
+ * Enable usb ehci uhh, tll clocks
+ */
+void ehci_clocks_enable(void)
+{
+       struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
+
+       /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */
+       sr32(&prcm_base->iclken_usbhost, 0, 1, 1);
+       /*
+        * Enable USBHOST_48M_FCLK (USBHOST_FCLK1)
+        * and USBHOST_120M_FCLK (USBHOST_FCLK2)
+        */
+       sr32(&prcm_base->fclken_usbhost, 0, 2, 3);
+       /* Enable USBTTL_ICLK */
+       sr32(&prcm_base->iclken3_core, 2, 1, 1);
+       /* Enable USBTTL_FCLK */
+       sr32(&prcm_base->fclken3_core, 2, 1, 1);
+}
+
 /******************************************************************************
  * peripheral_enable() - Enable the clks & power for perifs (GPT2, UART1,...)
  *****************************************************************************/