Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-20 Thread Andreas Naumann
Hi, Am 16.08.2013 17:30, schrieb Robert Nelson: On Fri, Aug 16, 2013 at 10:07 AM, Robert Nelson robertcnel...@gmail.com wrote: On Fri, Aug 16, 2013 at 9:34 AM, Peter A. Bigot p...@pabigot.com wrote: On 08/16/2013 08:38 AM, Tom Rini wrote: On Wed, Aug 14, 2013 at 09:53:16PM -0500, Peter A.

Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-20 Thread Roger Quadros
Hi, On 08/20/2013 11:50 AM, Andreas Naumann wrote: Hi, Am 16.08.2013 17:30, schrieb Robert Nelson: On Fri, Aug 16, 2013 at 10:07 AM, Robert Nelson robertcnel...@gmail.com wrote: On Fri, Aug 16, 2013 at 9:34 AM, Peter A. Bigot p...@pabigot.com wrote: On 08/16/2013 08:38 AM, Tom Rini

Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-20 Thread Andreas Naumann
Hi Roger, What are the symptoms you see when this issue triggers? The symptoms are erroneous USB transaction, seen with a USB port analyzer. These only sometimes (not always) stall the USB communication, e.g. a USB mass storage device cant be read any longer. What is the test case to

Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-20 Thread Robert Nelson
On Tue, Aug 20, 2013 at 5:15 AM, Andreas Naumann d...@andin.de wrote: Hi Roger, What are the symptoms you see when this issue triggers? The symptoms are erroneous USB transaction, seen with a USB port analyzer. These only sometimes (not always) stall the USB communication, e.g. a USB

Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-16 Thread Tom Rini
On Tue, Jul 09, 2013 at 09:43:17AM +0200, Naumann Andreas wrote: 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

Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-16 Thread Tom Rini
On Wed, Aug 14, 2013 at 09:53:16PM -0500, Peter A. Bigot wrote: On 07/09/2013 02:43 AM, Naumann Andreas wrote: 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

Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-16 Thread Peter A. Bigot
On 08/16/2013 08:38 AM, Tom Rini wrote: On Wed, Aug 14, 2013 at 09:53:16PM -0500, Peter A. Bigot wrote: On 07/09/2013 02:43 AM, Naumann Andreas wrote: 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

Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-16 Thread Robert Nelson
On Fri, Aug 16, 2013 at 9:34 AM, Peter A. Bigot p...@pabigot.com wrote: On 08/16/2013 08:38 AM, Tom Rini wrote: On Wed, Aug 14, 2013 at 09:53:16PM -0500, Peter A. Bigot wrote: On 07/09/2013 02:43 AM, Naumann Andreas wrote: In chapter 'Advisory 2.1 USB Host Clock Drift Causes USB Spec

Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-16 Thread Robert Nelson
On Fri, Aug 16, 2013 at 10:07 AM, Robert Nelson robertcnel...@gmail.com wrote: On Fri, Aug 16, 2013 at 9:34 AM, Peter A. Bigot p...@pabigot.com wrote: On 08/16/2013 08:38 AM, Tom Rini wrote: On Wed, Aug 14, 2013 at 09:53:16PM -0500, Peter A. Bigot wrote: On 07/09/2013 02:43 AM, Naumann

Re: [U-Boot] ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

2013-08-14 Thread Peter A. Bigot
On 07/09/2013 02:43 AM, Naumann Andreas wrote: 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