On Sun, Feb 22, 2009 at 6:22 PM, Dirk Behme dirk.behme@googlemail.com wrote:
Dear Jean-Christophe,
Jean-Christophe PLAGNIOL-VILLARD wrote:
On 19:55 Thu 12 Feb , Dirk Behme wrote:
OMAP3 core changes necessary for MUSB
Signed-off-by: Dirk Behme dirk.behme@googlemail.com
Note: OMAP3 USB code will be sent later to USB maintainer, so CONFIG_MUSB isn't used anywhere yet. This will avoid USB maintainer to change OMAP3 core files.
cpu/arm_cortexa8/omap3/clock.c | 5 +++++ include/asm-arm/arch-omap3/cpu.h | 2 ++ include/asm-arm/arch-omap3/omap3.h | 11 +++++++++++ 3 files changed, 18 insertions(+)
Index: u-boot-main/cpu/arm_cortexa8/omap3/clock.c
--- u-boot-main.orig/cpu/arm_cortexa8/omap3/clock.c +++ u-boot-main/cpu/arm_cortexa8/omap3/clock.c @@ -377,5 +377,10 @@ void per_clocks_enable(void) sr32(&prcm_base->fclken_per, 0, 32, FCK_PER_ON); sr32(&prcm_base->iclken_per, 0, 32, ICK_PER_ON);
+#ifdef CONFIG_MUSB
- /* Enable the MUSB interface clock */
- sr32(&prcm_base->iclken1_core, 4, 1, 0x1);
+#endif
the design of u-boot is to enagle the IP only when he use it so please do not enable the clock every time just when you want to use (in the USB driver init)
This is already answered in
http://lists.denx.de/pipermail/u-boot/2009-February/047452.html
He probably wants to say that clocks should be enabled only when "usb start" is issued, as you might have u-boot compiled with USB defines set, but never actually use USB.