diff options
author | Naumann Andreas <ANaumann@ultratronik.de> | 2013-07-09 09:43:17 +0200 |
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committer | Tom Rini <trini@ti.com> | 2013-08-15 09:09:29 -0400 |
commit | a704a6d615179a25f556c99d31cbc4ee366ffb54 (patch) | |
tree | f3711d3ae6ca2da11162de7b10b93c8efec43602 /arch/arm/include/asm/arch-omap3/clock.h | |
parent | 802b3c7c1826018530acc8a7b8fe83f11614c937 (diff) |
ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.
In chapter 'Advisory 2.1 USB Host Clock Drift Causes USB Spec Non-compliance in Certain Configurations' of the TI Errata it is recommended to use certain div/mult values for the DPLL5 clock setup.
So far u-boot used the old 34xx values, so I added the errata recommended values specificly for 36xx init only.
Also, the FSEL registers exist no longer, so removed them from init.
Tested this on a AM3703 board with 19.2MHz oscillator, which previously couldnt lock the dpll5 (kernel complained). As a consequence the EHCI USB port wasnt usable in U-Boot and kernel. With this patch, kernel panics disappear and USB working fine in u-boot and kernel.
Signed-off-by: Andreas Naumann <anaumann@ultratronik.de>
[trini: Add extern to <asm/arch-omap3/clock.h>
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'arch/arm/include/asm/arch-omap3/clock.h')
-rw-r--r-- | arch/arm/include/asm/arch-omap3/clock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-omap3/clock.h b/arch/arm/include/asm/arch-omap3/clock.h index da776cf5b8..514839c778 100644 --- a/arch/arm/include/asm/arch-omap3/clock.h +++ b/arch/arm/include/asm/arch-omap3/clock.h @@ -61,6 +61,7 @@ extern dpll_param *get_36x_mpu_dpll_param(void); extern dpll_param *get_36x_iva_dpll_param(void); extern dpll_param *get_36x_core_dpll_param(void); extern dpll_param *get_36x_per_dpll_param(void); +extern dpll_param *get_36x_per2_dpll_param(void); extern void *_end_vect, *_start; |