pm2fb: Manual configuration of timings for Elsa Winner 2000 Office
PATCH 9/17 pm2fb: Manual configuration of timings for Elsa Winner 2000 Office
From: Peter 'p2' De Schrijver <[email protected]>
Attached is a small patch which configures the correct memory clock and timings on the Elsa Winner 2000 Office pm2 based card. This is necessary when the card is used on a platform which does not support PC style BIOS initialization.
Signed-off-by Antonino Daplas <[email protected]>
--- pm2fb.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+)
drivers/video/pm2fb.c +16 -0
@@ -1120,6 +1120,22 @@ static int __devinit pm2fb_probe(struct default_par->mem_control, default_par->boot_address, default_par->mem_config); +if (default_par->mem_control ==0 && + default_par->boot_address ==0x31 && + default_par->mem_config ==0x259fffff && + pdev->subsystem_vendor ==0x1048 && + pdev->subsystem_device ==0x0a31 ) { +DPRINTK ("subsystem_vendor: %04x, subsystem_device: %04x\n" , + pdev->subsystem_vendor, pdev->subsystem_device); +DPRINTK ("We have not been initialized by VGA BIOS " +"and are running on an Elsa Winner 2000 Office\n" ); +DPRINTK ("Initializing card timings manually...\n" ); + default_par->mem_control=0 ; + default_par->boot_address=0x20 ; + default_par->mem_config=0xe6002021 ; + default_par->memclock=100000 ; + } +/* Now work out how big lfb is going to be. */ switch (default_par->mem_config &PM2F_MEM_CONFIG_RAM_MASK ) {case PM2F_MEM_BANKS_1 :
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