diff options
| author | Loren Huang <b02279@freescale.com> | 2013-06-04 15:08:15 +0800 |
|---|---|---|
| committer | Richard Liu <r66033@freescale.com> | 2013-06-08 10:43:19 +0800 |
| commit | eaa3930c8e752e8d75a0e1b50ec5cacee020293f (patch) | |
| tree | 94c9db4c5d7618e504d4a2274281323cb7e41638 | |
| parent | 41f0553746777fe3d1bf7ad77678db2eb0ffa3e9 (diff) | |
ENGR00265465 gpu:Add global value for minimum 3D clock export
Add global value gpu3DMinClock so that minimum 3D clock can be change by user.
When gpu min clock is too low, it may cause IPU starvation issue in certain case.
Use echo x > /sys/module/galcore/parameters/gpu3DMinClock to change it.
Signed-off-by: Loren Huang <b02279@freescale.com>
Acked-by: Lily Zhang
| -rw-r--r-- | drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c | 6 | ||||
| -rw-r--r-- | drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c | 3 |
2 files changed, 8 insertions, 1 deletions
diff --git a/drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c b/drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c index 3829999b51be..ebd36fec29e2 100644 --- a/drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c +++ b/drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c @@ -36,6 +36,7 @@ typedef struct _gcsiDEBUG_REGISTERS } gcsiDEBUG_REGISTERS; +extern int gpu3DMinClock; /******************************************************************************\ ********************************* Support Code ********************************* \******************************************************************************/ @@ -4630,7 +4631,10 @@ gckHARDWARE_GetFscaleValue( ) { *FscaleValue = Hardware->powerOnFscaleVal; - *MinFscaleValue = 1; + if ((gpu3DMinClock > 0) && (gpu3DMinClock <= 64) && (Hardware->core == gcvCORE_MAJOR)) + *MinFscaleValue = gpu3DMinClock; + else + *MinFscaleValue = 1; *MaxFscaleValue = 64; return gcvSTATUS_OK; diff --git a/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c b/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c index 963527f6cec4..34438f7f6f7b 100644 --- a/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c +++ b/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c @@ -146,6 +146,9 @@ module_param(logFileSize,uint, 0644); static int showArgs = 0; module_param(showArgs, int, 0644); +int gpu3DMinClock = 0; +module_param(gpu3DMinClock, int, 0644); + #if ENABLE_GPU_CLOCK_BY_DRIVER unsigned long coreClock = 156000000; module_param(coreClock, ulong, 0644); |