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Commit 779c79d4 authored by Brad Love's avatar Brad Love Committed by Mauro Carvalho Chehab
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media: cx23885: Override 888 ImpactVCBe crystal frequency 



Hauppauge produced a revision of ImpactVCBe using an 888,
with a 25MHz crystal, instead of using the default third
overtone 50Mhz crystal. This overrides that frequency so
that the cx25840 is properly configured. Without the proper
crystal setup the cx25840 cannot load the firmware or
decode video.

Signed-off-by: default avatarBrad Love <brad@nextdimension.cc>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 5ceade1d

drivers/media/pci/cx23885/cx23885-core.c

+10 −0
Original line number Diff line number Diff line
@@ -881,6 +881,16 @@ static int cx23885_dev_setup(struct cx23885_dev *dev) 
	if (cx23885_boards[dev->board].clk_freq > 0)

		dev->clk_freq = cx23885_boards[dev->board].clk_freq;



	if (dev->board == CX23885_BOARD_HAUPPAUGE_IMPACTVCBE &&

		dev->pci->subsystem_device == 0x7137) {

		/* Hauppauge ImpactVCBe device ID 0x7137 is populated

		 * with an 888, and a 25Mhz crystal, instead of the

		 * usual third overtone 50Mhz. The default clock rate must

		 * be overridden so the cx25840 is properly configured

		 */

		dev->clk_freq = 25000000;

	}



	dev->pci_bus  = dev->pci->bus->number;

	dev->pci_slot = PCI_SLOT(dev->pci->devfn);

	cx23885_irq_add(dev, 0x001f00);