Hi, On Wed, 26 Dec 2018 11:29:36 +0100 'Ondřej Jirman' via linux-sunxi <linux-sunxi@xxxxxxxxxxxxxxxx> wrote: > Hello, > > On Tue, Oct 30, 2018 at 04:09:48PM +0800, Yong Deng wrote: > > I can't make v4l2-compliance always happy. > > The V3s CSI support many pixformats. But they are not always available. > > It's dependent on the input bus format (MEDIA_BUS_FMT_*). > > Example: > > V4L2_PIX_FMT_SBGGR8: MEDIA_BUS_FMT_SBGGR8_1X8 > > V4L2_PIX_FMT_YUYV: MEDIA_BUS_FMT_YUYV8_2X8 > > But I can't get the subdev's format code before starting stream as the > > subdev may change it. So I can't know which pixformats are available. > > So I exports all the pixformats supported by SoC. > > The result is the app (v4l2-compliance) is likely to fail on streamon. > > > > This patchset add initial support for Allwinner V3s CSI. > > I've tested your patches on A83T and CSI works on that SoC too. I'll send > DTS patches later. > > One thing I noticed is that, when you cat the regmap registers file in debugfs > while streaming, the kernel locks up hard. I was not able to extract any logs. May be some registers can't be read when streaming ? Like read-clear regs ? Or multi CPU core access regs at the same time may cause the bus lock up? Thanks, Yong
