Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-26 Thread Peter Crosthwaite
On Sat, Sep 12, 2015 at 2:06 PM, Guenter Roeck wrote: > The Linux kernel only accepts 34 Khz and 67 Khz clock rates, and > may crash if the actual clock rate is too low. The clock rate used to be > (ps-clk-frequency * 26 / 4), which resulted in a CPU frequency of > 21 Khz if ps-clk-fre

Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-26 Thread Peter Crosthwaite
On Mon, Sep 14, 2015 at 6:17 AM, Nathan Rossi wrote: > On Mon, Sep 14, 2015 at 10:07 PM, Peter Maydell > wrote: >> On 13 September 2015 at 23:42, Peter Crosthwaite >> wrote: >>> On Sun, Sep 13, 2015 at 1:47 PM, Peter Maydell >>> wrote: On 13 September 2015 at 21:22, Peter Crosthwaite

Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-14 Thread Guenter Roeck
On 09/14/2015 06:17 AM, Nathan Rossi wrote: On Mon, Sep 14, 2015 at 10:07 PM, Peter Maydell wrote: On 13 September 2015 at 23:42, Peter Crosthwaite wrote: On Sun, Sep 13, 2015 at 1:47 PM, Peter Maydell wrote: On 13 September 2015 at 21:22, Peter Crosthwaite wrote: There may be more change

Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-14 Thread Nathan Rossi
On Mon, Sep 14, 2015 at 10:07 PM, Peter Maydell wrote: > On 13 September 2015 at 23:42, Peter Crosthwaite > wrote: >> On Sun, Sep 13, 2015 at 1:47 PM, Peter Maydell >> wrote: >>> On 13 September 2015 at 21:22, Peter Crosthwaite >>> wrote: There may be more changes worth making on is_linux

Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-14 Thread Peter Maydell
On 13 September 2015 at 23:42, Peter Crosthwaite wrote: > On Sun, Sep 13, 2015 at 1:47 PM, Peter Maydell > wrote: >> On 13 September 2015 at 21:22, Peter Crosthwaite >> wrote: >>> There may be more changes worth making on is_linux. I don't have the >>> patch with the full list of FSBL-related S

Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-13 Thread Peter Crosthwaite
On Sun, Sep 13, 2015 at 1:47 PM, Peter Maydell wrote: > On 13 September 2015 at 21:22, Peter Crosthwaite > wrote: >> On Sat, Sep 12, 2015 at 2:06 PM, Guenter Roeck wrote: >>> The Linux kernel only accepts 34 Khz and 67 Khz clock rates, and >>> may crash if the actual clock rate is too lo

Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-13 Thread Guenter Roeck
Peter, On 09/13/2015 01:47 PM, Peter Maydell wrote: On 13 September 2015 at 21:22, Peter Crosthwaite wrote: On Sat, Sep 12, 2015 at 2:06 PM, Guenter Roeck wrote: The Linux kernel only accepts 34 Khz and 67 Khz clock rates, and may crash if the actual clock rate is too low. The clock

Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-13 Thread Peter Maydell
On 13 September 2015 at 21:22, Peter Crosthwaite wrote: > On Sat, Sep 12, 2015 at 2:06 PM, Guenter Roeck wrote: >> The Linux kernel only accepts 34 Khz and 67 Khz clock rates, and >> may crash if the actual clock rate is too low. The clock rate used to be >> (ps-clk-frequency * 26 / 4), w

Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-13 Thread Guenter Roeck
On 09/13/2015 01:22 PM, Peter Crosthwaite wrote: On Sat, Sep 12, 2015 at 2:06 PM, Guenter Roeck wrote: The Linux kernel only accepts 34 Khz and 67 Khz clock rates, and may crash if the actual clock rate is too low. The clock rate used to be (ps-clk-frequency * 26 / 4), which resulted in

Re: [Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-13 Thread Peter Crosthwaite
On Sat, Sep 12, 2015 at 2:06 PM, Guenter Roeck wrote: > The Linux kernel only accepts 34 Khz and 67 Khz clock rates, and > may crash if the actual clock rate is too low. The clock rate used to be > (ps-clk-frequency * 26 / 4), which resulted in a CPU frequency of > 21 Khz if ps-clk-fre

[Qemu-devel] [PATCH v2] hw/misc/zynq_slcr: Change CPU clock rate for Linux boots

2015-09-12 Thread Guenter Roeck
The Linux kernel only accepts 34 Khz and 67 Khz clock rates, and may crash if the actual clock rate is too low. The clock rate used to be (ps-clk-frequency * 26 / 4), which resulted in a CPU frequency of 21 Khz if ps-clk-frequency was set to Hz. Change it to (ps-clk-frequency *