Hello, This series adds support for CSI-2 D-PHY reception on R-Car Gen4 V4H devices. Previously only C-PHY reception due to poor documentation and no hardware to test D-PHY on. Later revisions of the datasheet (Rev.1.21) describes the start-up procedure in some detail, and we now have hardware to test on! The documentation however only sparsely documents the registers involved and instead mostly document magic values and an order to write them to register offsets without much documentation. This series tries to in the extend possible to at least used named register and use formulas and lookup tables to make some sens of the magic values. Still most of them comes of a table of magic values in the datasheet. Patch 1/4 clears up a unfortunate mix of the name mbps (mega bits per second) used in the D-PHY context and msps (mega symbols per second) used in the C-PHY context. Patch 2/4 and 3/4 prepares for adding D-PHY support by cleaning up register names and an updated common startup procedure for V4H which have been revised in later versions of the datasheet since the initial C-PHY V4H support was added. Finally patch 4/4 adds D-PHY support. The work is to great extent at many different link speed and number of lanes. In 2-lane mode using an IMX219 and in 4-lane mode using IMX462 sensors. Niklas Söderlund (4): media: rcar-csi2: Clarify usage of mbps and msps media: rcar-csi2: Rework macros to access AFE lanes media: rcar-csi2: Update start procedure for V4H media: rcar-csi2: Add D-PHY support for V4H drivers/media/platform/renesas/rcar-csi2.c | 449 ++++++++++++++++++--- 1 file changed, 404 insertions(+), 45 deletions(-) -- 2.49.0
