[PATCH] mmp-camera: specify XO-1.75 clock speed

[Daniel Drake <dsd@laptop.org>]

For the ov7670 camera to return images at the requested frame rate,
it needs to make calculations based on the clock speed, which is
a completely external factor (depends on the wiring of the system).

On the XO-1.75, which is the only known mmp-camera user, the camera
is clocked at 48MHz.

Pass this information to the ov7670 driver, to fix an issue where
a framerate faster than the requested amount was being provided.

Signed-off-by: Daniel Drake <dsd@laptop.org>
---
 drivers/media/video/marvell-ccic/mmp-driver.c |    7 +++++++
 1 file changed, 7 insertions(+)

Jon, is it OK to assume that XO-1.75 is the only mmp-camera user?

diff --git a/drivers/media/video/marvell-ccic/mmp-driver.c b/drivers/media/video/marvell-ccic/mmp-driver.c
index c4c17fe..0ba49c7 100644
--- a/drivers/media/video/marvell-ccic/mmp-driver.c
+++ b/drivers/media/video/marvell-ccic/mmp-driver.c
@@ -188,6 +188,13 @@ static int mmpcam_probe(struct platform_device *pdev)
 	mcam->chip_id = V4L2_IDENT_ARMADA610;
 	mcam->buffer_mode = B_DMA_sg;
 	spin_lock_init(&mcam->dev_lock);
+
+	/*
+	 * Set the clock speed for the XO-1.75; I don't believe this
+	 * driver has ever run anywhere else.
+	 */
+	mcam->clock_speed = 48;
+
 	/*
 	 * Get our I/O memory.
 	 */
-- 
1.7.10.1