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SubjectRe: [PATCH v5 00/39] i.MX Media Driver
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On 03/10/2017 12:13 PM, Russell King - ARM Linux wrote:
> Version 5 gives me no v4l2 controls exposed through the video device
> interface.
>
> Just like with version 4, version 5 is completely useless with IMX219:
>
> imx6-mipi-csi2: LP-11 timeout, phy_state = 0x00000200
> ipu1_csi0: pipeline start failed with -110
> imx6-mipi-csi2: LP-11 timeout, phy_state = 0x00000200
> ipu1_csi0: pipeline start failed with -110
> imx6-mipi-csi2: LP-11 timeout, phy_state = 0x00000200
> ipu1_csi0: pipeline start failed with -110
>

If it's too difficult to get the imx219 csi-2 transmitter into the
LP-11 state on power on, perhaps the csi-2 receiver can be a little
more lenient on the transmitter and make the LP-11 timeout a warning
instead of error-out.

Can you try the attached change on top of the version 5 patchset?

If that doesn't work then you're just going to have to fix the bug
in imx219.

Steve
diff --git a/drivers/staging/media/imx/imx6-mipi-csi2.c b/drivers/staging/media/imx/imx6-mipi-csi2.c
index d8f931e..720bf4d 100644
--- a/drivers/staging/media/imx/imx6-mipi-csi2.c
+++ b/drivers/staging/media/imx/imx6-mipi-csi2.c
@@ -224,11 +224,8 @@ static int csi2_dphy_wait_stopstate(struct csi2_dev *csi2)

ret = readl_poll_timeout(csi2->base + CSI2_PHY_STATE, reg,
(reg & mask) == mask, 0, 500000);
- if (ret) {
- v4l2_err(&csi2->sd, "LP-11 timeout, phy_state = 0x%08x\n", reg);
- return ret;
- }
-
+ if (ret)
+ v4l2_warn(&csi2->sd, "LP-11 timeout, phy_state = 0x%08x\n", reg);
return 0;
}
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