Hi, On 11/05/2025 20:47, Niklas Söderlund wrote: > 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. > > See individual patches for change log. > > 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 | 447 ++++++++++++++++++--- > 1 file changed, 402 insertions(+), 45 deletions(-) > On my V4H + GMSL multistream branch (i.e. C-PHY): Tested-by: Tomi Valkeinen <tomi.valkeinen+renesas@xxxxxxxxxxxxxxxx> Tomi
