Hi Guido, I tested this on my setup and it works. My DSI panel is a little bit different and it doesn't work with this as-is, but I added some improvements on top of this, in order to be able to setup the clocks. The changes I made can arrive on top of this as improvements, of course, since it will allow this driver to dinamically set the video_pll clock for any kind of mode. So, for the whole patch-set, you can add: Tested-by: Robert Chiras <robert.chiras@xxxxxxx> Signed-off-by: Robert Chiras <robert.chiras@xxxxxxx> Best regards, Robert On Jo, 2019-08-22 at 12:44 +0200, Guido Günther wrote: > This adds initial support for the NWL MIPI DSI Host controller found > on i.MX8 > SoCs. > > It adds support for the i.MX8MQ but the same IP core can also be > found on e.g. > i.MX8QXP. I added the necessary hooks to support other imx8 variants > but since > I only have imx8mq boards to test I omitted the platform data for > other SoCs. > > The code is based on NXPs BSP so I added Robert Chiras as > Co-authored-by. Robert, if this looks sane could you add your > Signed-off-by:? > > The most notable changes over the BSP driver are > - Calculate HS mode timing from phy_configure_opts_mipi_dphy > - Perform all clock setup via DT > - Merge nwl-imx and nwl drivers > - Add B0 silion revision quirk > - become a bridge driver to hook into mxsfb (from what I read[0] > DCSS, which > also can drive the nwl on the imx8mq will likely not become part > of > imx-display-subsystem so it makes sense to make it drive a bridge > for dsi as > well). > - Use panel_bridge to attach the panel > - Use multiplex framework instead of accessing syscon directly > > This has been tested on a Librem 5 devkit using mxsfb with Robert's > patches[1] > and the rocktech-jh057n00900 panel driver on next-20190821. The DCSS > can later > on also act as input source too. > > Changes from v2: > - Per review comments by Rob Herring > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fl > ists.freedesktop.org%2Farchives%2Fdri-devel%2F2019- > August%2F230448.html&data=02%7C01%7Crobert.chiras%40nxp.com%7C757 > 201f9aaa54653580e08d726edb290%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0% > 7C0%7C637020674654566414&sdata=JdvAdCPGq2CTsW%2BgXgnAVltWMIfdCDQn > dXSLYpnjEH8%3D&reserved=0 > - bindings: > - Simplify by restricting to fsl,imx8mq-nwl-dsi > - document reset lines > - add port@{0,1} > - use a real compatible string for the panel > - resets are required > - Per review comments by Arnd Bergmann > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fl > ists.freedesktop.org%2Farchives%2Fdri-devel%2F2019- > August%2F230868.html&data=02%7C01%7Crobert.chiras%40nxp.com%7C757 > 201f9aaa54653580e08d726edb290%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0% > 7C0%7C637020674654566414&sdata=LyJpZjQjMCe5zUdvK8CD8ETucLPxx621gW > xtpAr8DM4%3D&reserved=0 > - Don't access iomuxc_gpr regs directly. This allows us to drop the > first patch in the series with the iomuxc_gpr field defines. > - Per review comments by Laurent Pinchart > - Fix wording in bindings > - Add mux-controls to bindings > - Don't print error message on dphy probe deferal > > Changes from v1: > - Per review comments by Sam Ravnborg > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fl > ists.freedesktop.org%2Farchives%2Fdri-devel%2F2019- > July%2F228130.html&data=02%7C01%7Crobert.chiras%40nxp.com%7C75720 > 1f9aaa54653580e08d726edb290%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C > 0%7C637020674654566414&sdata=AU2gzIwrbCdIBZenPWWYYX%2BgdX53zc2%2B > SQhZbuN%2FWpU%3D&reserved=0 > - Change binding docs to YAML > - build: Don't always visit imx-nwl/ > - build: Add header-test-y > - Sort headers according to DRM convention > - Use drm_display_mode instead of videmode > - Per review comments by Fabio Estevam > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fl > ists.freedesktop.org%2Farchives%2Fdri-devel%2F2019- > July%2F228299.html&data=02%7C01%7Crobert.chiras%40nxp.com%7C75720 > 1f9aaa54653580e08d726edb290%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C > 0%7C637020674654566414&sdata=6kpIZ6iNAQ13fMXU6sqENLwy%2FdIWL6ef8j > gyas7I0CQ%3D&reserved=0 > - Don't restrict build to ARCH_MXC > - Drop unused includes > - Drop unreachable code in imx_nwl_dsi_bridge_mode_fixup() > - Drop remaining calls of dev_err() and use DRM_DEV_ERR() > consistently. > - Use devm_platform_ioremap_resource() > - Drop devm_free_irq() in probe() error path > - Use single line comments where sufficient > - Use <linux/time64.h> instead of defining USEC_PER_SEC > - Make input source select imx8 specific > - Drop <asm/unaligned.h> inclusion (after removal of > get_unaligned_le32) > - Drop all EXPORT_SYMBOL_GPL() for functions used in the same > module > but different source files. > - Drop nwl_dsi_enable_{rx,tx}_clock() by invoking > clk_prepare_enable() > directly > - Remove pointless comment > - Laurent Pinchart > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fl > ists.freedesktop.org%2Farchives%2Fdri-devel%2F2019- > July%2F228313.html&data=02%7C01%7Crobert.chiras%40nxp.com%7C75720 > 1f9aaa54653580e08d726edb290%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C > 0%7C637020674654566414&sdata=tDlVGeET1CPMH9W%2FqmnePNR51vNaTKD%2F > iFOoR9%2FmESc%3D&reserved=0 > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fl > ists.freedesktop.org%2Farchives%2Fdri-devel%2F2019- > July%2F228308.html&data=02%7C01%7Crobert.chiras%40nxp.com%7C75720 > 1f9aaa54653580e08d726edb290%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C > 0%7C637020674654566414&sdata=NsLGAL8%2BcOC0ZZxxeoGe7VxQCgqSBEN4G3 > WVGOeZpCo%3D&reserved=0 > - Drop (on iMX8MQ) unused csr regmap > - Use NWL_MAX_PLATFORM_CLOCKS everywhere > - Drop get_unaligned_le32() usage > - remove duplicate 'for the' in binding docs > - Don't include unused <linux/clk-provider.h> > - Don't include unused <linux/component.h> > - Drop dpms_mode for tracking state, trust the drm layer on that > - Use pm_runtime_put() instead of pm_runtime_put_sync() > - Don't overwrite encoder type > - Make imx_nwl_platform_data const > - Use the reset controller API instead of open coding that platform > specific > part > - Use <linux/bitfield.h> intead of making up our own defines > - name mipi_dsi_transfer less generic: nwl_dsi_transfer > - ensure clean in .remove by calling mipi_dsi_host_unregister. > - prefix constants by NWL_DSI_ > - properly format transfer_direction enum > - simplify platform clock handling > - Don't modify state in mode_fixup() and use mode_set() instead > - Drop bridge detach(), already handle by nwl_dsi_host_detach() > - Drop USE_*_QUIRK() macros > - Drop (for now) unused clock defnitions. 'pixel' and 'bypass' clock > will be > used for i.MX8 SoCs but since they're unused atm drop the > definitions - but > keep the logic to enable/disable several clocks in place since we > know we'll > need it in the future. > > Changes from v0: > - Add quirk for IMQ8MQ silicon B0 revision to not mess with the > system reset controller on power down since enable() won't work > otherwise. > - Drop devm_free_irq() handled by the device driver core > - Disable tx esc clock after the phy power down to unbreak > disable/enable (unblank/blank) > - Add ports to dt binding docs > - Select GENERIC_PHY_MIPI_DPHY instead of GENERIC_PHY for > phy_mipi_dphy_get_default_config > - Select DRM_MIPI_DSI > - Include drm_print.h to fix build on next-20190408 > - Drop some debugging messages > - Newline terminate all DRM_ printouts > - Turn component driver into a drm bridge > > [0]: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F% > 2Flists.freedesktop.org%2Farchives%2Fdri-devel%2F2019- > May%2F219484.html&data=02%7C01%7Crobert.chiras%40nxp.com%7C757201 > f9aaa54653580e08d726edb290%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0 > %7C637020674654566414&sdata=4IVjhLy3a2XxZ4jYwDFD23D%2BvwAVAEj44hY > fvvp8OpQ%3D&reserved=0 > [1]: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F% > 2Fpatchwork.freedesktop.org%2Fseries%2F62822%2F&data=02%7C01%7Cro > bert.chiras%40nxp.com%7C757201f9aaa54653580e08d726edb290%7C686ea1d3bc > 2b4c6fa92cd99c5c301635%7C0%7C0%7C637020674654566414&sdata=GueUBOc > baGjWtWcMYBplL6ki2UbgaFPkQHg%2F6eReiYg%3D&reserved=0 > > To: David Airlie <airlied@xxxxxxxx>, Daniel Vetter <daniel@xxxxxxxx>, > Rob Herring <robh+dt@xxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx> > , Shawn Guo <shawnguo@xxxxxxxxxx>, Sascha Hauer <s.hauer@pengutronix. > de>, Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>, Fabio Estevam < > festevam@xxxxxxxxx>, NXP Linux Team <linux-imx@xxxxxxx>, Andrzej > Hajda <a.hajda@xxxxxxxxxxx>, Neil Armstrong <narmstrong@xxxxxxxxxxxx> > , Laurent Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx>, Jonas Karlman > <jonas@xxxxxxxxx>, Jernej Skrabec <jernej.skrabec@xxxxxxxx>, Lee > Jones <lee.jones@xxxxxxxxxx>, Guido Günther <agx@xxxxxxxxxxx>, dri-de > vel@xxxxxxxxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, linux-arm-kern > el@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Robert Chiras < > robert.chiras@xxxxxxx>, Sam Ravnborg <sam@xxxxxxxxxxxx>, Fabio > Estevam <festevam@xxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx> > > > Guido Günther (2): > dt-bindings: display/bridge: Add binding for NWL mipi dsi host > controller > drm/bridge: Add NWL MIPI DSI host controller support > > .../bindings/display/bridge/nwl-dsi.yaml | 155 ++++ > drivers/gpu/drm/bridge/Kconfig | 2 + > drivers/gpu/drm/bridge/Makefile | 1 + > drivers/gpu/drm/bridge/nwl-dsi/Kconfig | 16 + > drivers/gpu/drm/bridge/nwl-dsi/Makefile | 4 + > drivers/gpu/drm/bridge/nwl-dsi/nwl-drv.c | 501 +++++++++++++ > drivers/gpu/drm/bridge/nwl-dsi/nwl-drv.h | 65 ++ > drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.c | 700 > ++++++++++++++++++ > drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.h | 112 +++ > 9 files changed, 1556 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml > create mode 100644 drivers/gpu/drm/bridge/nwl-dsi/Kconfig > create mode 100644 drivers/gpu/drm/bridge/nwl-dsi/Makefile > create mode 100644 drivers/gpu/drm/bridge/nwl-dsi/nwl-drv.c > create mode 100644 drivers/gpu/drm/bridge/nwl-dsi/nwl-drv.h > create mode 100644 drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.c > create mode 100644 drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.h > > -- > 2.20.1 >
