On Fri, Dec 11, 2020 at 04:57:06PM +0100, Paul Kocialkowski wrote: > The A83T supports MIPI CSI-2 with a composite controller, covering > both the protocol logic and the D-PHY implementation. This controller > seems to be found on the A83T only and probably was abandoned since. > > This implementation splits the protocol and D-PHY registers and > uses the PHY framework internally. The D-PHY is not registered as a > standalone PHY driver since it cannot be used with any other > controller. > > There are a few notable points about the controller: > - The initialisation sequence involes writing specific magic init > values that do not seem to make any particular sense given the > concerned register fields; > - Interrupts appear to be hitting regardless of the interrupt mask > registers, which can cause a serious flood when transmission errors > occur. > > Only 8-bit and 10-bit Bayer formats are currently supported. > While up to 4 internal channels to the CSI controller exist, only one > is currently supported by this implementation. > > This work is based on the first version of the driver submitted by > Kévin L'hôpital, which was adapted to mainline from the Allwinner BSP. > This version integrates MIPI CSI-2 support as a standalone V4L2 subdev > instead of merging it in the sun6i-csi driver. > > It was tested on a Banana Pi M3 board with an OV8865 sensor in a 4-lane > configuration. > > Signed-off-by: Paul Kocialkowski <paul.kocialkow...@bootlin.com> > --- > arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts | 2 +- > drivers/media/platform/sunxi/Kconfig | 1 + > drivers/media/platform/sunxi/Makefile | 1 + > .../sunxi/sun8i-a83t-mipi-csi2/Kconfig | 11 + > .../sunxi/sun8i-a83t-mipi-csi2/Makefile | 4 + > .../sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c | 92 +++ > .../sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.h | 39 ++ > .../sun8i_a83t_mipi_csi2.c | 657 ++++++++++++++++++ > .../sun8i_a83t_mipi_csi2.h | 197 ++++++ > 9 files changed, 1003 insertions(+), 1 deletion(-) > create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig > create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Makefile > create mode 100644 > drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c > create mode 100644 > drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.h > create mode 100644 > drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c > create mode 100644 > drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.h > > diff --git a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts > b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts > index b437eaeb91e9..bebe843a069b 100644 > --- a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts > +++ b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts > @@ -151,7 +151,7 @@ port@1 { > > csi_in_mipi_csi2: endpoint { > remote-endpoint = <&mipi_csi2_out_csi>; > - } > + }; > }; > }; > };
This looks unrelated? (and there's the same issue with the macros) Maxime
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