| Message ID | 20220408162108.184583-1-jagan@amarulasolutions.com |
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On Fri, Apr 8, 2022 at 9:22 AM Jagan Teki <jagan@amarulasolutions.com> wrote: > > This series supports common bridge support for Samsung MIPI DSIM > which is used in Exynos and i.MX8MM SoC's. > > Previous RFC can be available here [1]. > > The final bridge supports both the Exynos and i.MX8MM DSI devices. > > On, summary this patch-set break the entire DSIM driver into > - platform specific glue code for platform ops, component_ops. > - common bridge driver which handle platform glue init and invoke. > > Patch 0000: Samsung DSIM bridge > > Patch 0001: platform init flag via driver_data > > Patch 0002/9: bridge fixes, atomic API's > > Patch 0010: document fsl,imx8mm-mipi-dsim > > Patch 0011: add i.MX8MM DSIM support > > Tested in Engicam i.Core MX8M Mini SoM. > > Anyone interested, please have a look on this repo [2] > > [2] https://github.com/openedev/kernel/tree/imx8mm-dsi-v1 > [1] https://lore.kernel.org/linux-arm-kernel/YP2j9k5SrZ2%2Fo2%2F5@ravnborg.org/T/ > > Any inputs? > Jagan. > > Jagan Teki (11): > drm: bridge: Add Samsung DSIM bridge driver > drm: bridge: samsung-dsim: Handle platform init via driver_data > drm: bridge: samsung-dsim: Mark PHY as optional > drm: bridge: samsung-dsim: Add DSI init in bridge pre_enable() > drm: bridge: samsung-dsim: Fix PLL_P (PMS_P) offset > drm: bridge: samsung-dsim: Add module init, exit > drm: bridge: samsung-dsim: Add atomic_check > drm: bridge: samsung-dsim: Add atomic_get_input_bus_fmts > drm: bridge: samsung-dsim: Add input_bus_flags > dt-bindings: display: exynos: dsim: Add NXP i.MX8MM support > drm: bridge: samsung-dsim: Add i.MX8MM support > > .../bindings/display/exynos/exynos_dsim.txt | 1 + > MAINTAINERS | 12 + > drivers/gpu/drm/bridge/Kconfig | 12 + > drivers/gpu/drm/bridge/Makefile | 1 + > drivers/gpu/drm/bridge/samsung-dsim.c | 1803 +++++++++++++++++ > drivers/gpu/drm/exynos/Kconfig | 1 + > drivers/gpu/drm/exynos/exynos_drm_dsi.c | 1704 +--------------- > include/drm/bridge/samsung-dsim.h | 97 + > 8 files changed, 1982 insertions(+), 1649 deletions(-) > create mode 100644 drivers/gpu/drm/bridge/samsung-dsim.c > create mode 100644 include/drm/bridge/samsung-dsim.h > > -- > 2.25.1 > Jagan, Thanks so much for continuing to work this through! I've successfully tested this series on imx8mm-venice-gw73xx-0x using the following: - DFROBOT 7" raspberrypi touchscreen display (DFR0506) [1] - the following defconfig: CONFIG_REGULATOR_RASPBERRYPI_TOUCHSCREEN_ATTINY CONFIG_DRM_PANEL_SIMPLE CONFIG_DRM_PANEL_BRIDGE CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN CONFIG_DRM_TOSHIBA_TC358762 CONFIG_DRM_SAMSUNG_DSIM CONFIG_DRM_MXSFB - the following dt overlay: // SPDX-License-Identifier: (GPL-2.0+ OR MIT) /* * Copyright 2022 Gateworks Corporation */ #include <dt-bindings/gpio/gpio.h> #include "imx8mm-pinfunc.h" /dts-v1/; /plugin/; &{/} { compatible = "gw,imx8mm-gw73xx-0x", "fsl,imx8mm"; panel { compatible = "powertip,ph800480t013-idf02"; power-supply = <&attiny>; backlight = <&attiny>; port { panel_out_bridge: endpoint { remote-endpoint = <&bridge_out_panel>; }; }; }; }; &i2c3 { #address-cells = <1>; #size-cells = <0>; attiny: regulator@45 { compatible = "raspberrypi,7inch-touchscreen-panel-regulator"; reg = <0x45>; }; }; &lcdif { status = "okay"; }; &dsi { #address-cells = <1>; #size-cells = <0>; status = "okay"; bridge@0 { compatible = "toshiba,tc358762"; reg = <0>; vddc-supply = <&attiny>; #address-cells = <1>; #size-cells = <0>; status = "okay"; ports { #address-cells = <1>; #size-cells = <0>; port@0 { reg = <0>; bridge_in_dsi: endpoint { remote-endpoint = <&dsi_out_bridge>; data-lanes = <0 1>; }; }; port@1 { reg = <1>; bridge_out_panel: endpoint { remote-endpoint = <&panel_out_bridge>; }; }; }; }; ports { #address-cells = <1>; #size-cells = <0>; port@1 { reg = <1>; dsi_out_bridge: endpoint { remote-endpoint = <&bridge_in_dsi>; }; }; }; }; Tested-by: Tim Harvey <tharvey@gateworks.com> #imx8mm-venice-gw73xx with DFR0506 I'll be happy to test any follow-on series as needed. Best Regards, Tim [1] https://www.dfrobot.com/product-1655.html
Hi Jagan, thanks for picking this up again and sending a new version. Am Freitag, 8. April 2022, 18:20:57 CEST schrieb Jagan Teki: > This series supports common bridge support for Samsung MIPI DSIM > which is used in Exynos and i.MX8MM SoC's. > > Previous RFC can be available here [1]. > > The final bridge supports both the Exynos and i.MX8MM DSI devices. > > On, summary this patch-set break the entire DSIM driver into > - platform specific glue code for platform ops, component_ops. > - common bridge driver which handle platform glue init and invoke. > > Patch 0000: Samsung DSIM bridge > > Patch 0001: platform init flag via driver_data > > Patch 0002/9: bridge fixes, atomic API's > > Patch 0010: document fsl,imx8mm-mipi-dsim > > Patch 0011: add i.MX8MM DSIM support > > Tested in Engicam i.Core MX8M Mini SoM. > > Anyone interested, please have a look on this repo [2] > > [2] https://github.com/openedev/kernel/tree/imx8mm-dsi-v1 > [1] > https://lore.kernel.org/linux-arm-kernel/YP2j9k5SrZ2%2Fo2%2F5@ravnborg.org/ > T/ > > Any inputs? With the following patch I can use LVDS, connected via an LVDS bridge on my TQMa8MxML + MBa8Mx. Unless I enable 4 MIPI-DSI lanes. Using "data-lanes = <1 2 3 4>;" instead show a flickering image, but the "content" seems ok. On the downstream kernel MIPI-DSI is working, apparently using 4-lanes. On the first glance a bigger difference to the downstream kernel from NXP is that AFAICS they change the clocks depending on the currently selected mode [1]. I tried playing with the clocks but I don't fully grasp which clock has which effect, so I eventually had no results. Any ideas what might be wrong here? On a side note, might be completely unrelated to this series, I get the following warning as well: > sn65dsi83 2-002d: Unsupported LVDS bus format 0x100a, please check output bridge driver. Falling back to SPWG24. 0x100a is MEDIA_BUS_FMT_RGB888_1X24 from samsung_dsim_atomic_get_input_bus_fmts(). For some reason this is propagates to the output_bus_cfg used in sn65dsi83_atomic_enable(). I would have expected this is MEDIA_BUS_FMT_RGB888_1X7X4_SPWG from "tianma,tm070jvhg33" display. Best regards, Alexander [1] https://source.codeaurora.org/external/imx/linux-imx/tree/drivers/gpu/drm/ bridge/sec-dsim.c?h=lf-5.10.72-2.2.0#n1255 Here is my patch for the DT --->8--- diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/ freescale/Makefile index 52ce0f798657..7dd280b45681 100644 --- a/arch/arm64/boot/dts/freescale/Makefile +++ b/arch/arm64/boot/dts/freescale/Makefile @@ -58,6 +58,11 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-icore-mx8mm-edimm2.2.dtb dtb-$(CONFIG_ARCH_MXC) += imx8mm-kontron-n801x-s.dtb dtb-$(CONFIG_ARCH_MXC) += imx8mm-nitrogen-r2.dtb dtb-$(CONFIG_ARCH_MXC) += imx8mm-tqma8mqml-mba8mx.dtb + +tqma8mqml-mba8mx-imx327-dtbs += imx8mm-tqma8mqml-mba8mx.dtb imx8mm-tqma8mqml- mba8mx-imx327.dtbo +tqma8mqml-mba8mx-lvds-dtbs += imx8mm-tqma8mqml-mba8mx.dtb imx8mm-tqma8mqml- mba8mx-lvds.dtbo +dtb-$(CONFIG_ARCH_MXC) += tqma8mqml-mba8mx-imx327.dtb tqma8mqml-mba8mx- lvds.dtb + dtb-$(CONFIG_ARCH_MXC) += imx8mm-var-som-symphony.dtb dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw71xx-0x.dtb dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x.dtb diff --git a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx-lvds.dts b/ arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx-lvds.dts new file mode 100644 index 000000000000..8c743d291459 --- /dev/null +++ b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx-lvds.dts @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: (GPL-2.0-or-later OR MIT) +/* + * Copyright 2021-2022 TQ-Systems GmbH + */ + +/dts-v1/; +/plugin/; + +&{/} { + compatible = "tq,imx8mm-tqma8mqml-mba8mx", "tq,imx8mm-tqma8mqml", "fsl,imx8mm"; +}; + +&backlight_lvds0 { + status = "okay"; +}; + +&dsi { + status = "okay"; + + ports { + port@1 { + mipi_dsi_out: endpoint { + remote-endpoint = <&lvds_bridge_in>; + }; + }; + }; +}; + +&dsi_lvds_bridge { + status = "okay"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + lvds_bridge_in: endpoint { + data-lanes = <1 2 3>; + remote-endpoint = <&mipi_dsi_out>; + }; + }; + }; +}; + +&expander0 { + dsi-mux-oe-hog { + gpio-hog; + gpios = <10 0>; + output-low; + line-name = "DSI_MUX_OE#"; + }; +}; + +&lcdif { + status = "okay"; +}; + +&panel0 { + compatible = "tianma,tm070jvhg33"; + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/freescale/mba8mx.dtsi b/arch/arm64/boot/dts/ freescale/mba8mx.dtsi index c2f0f1a1566c..4b2cca3268eb 100644 --- a/arch/arm64/boot/dts/freescale/mba8mx.dtsi +++ b/arch/arm64/boot/dts/freescale/mba8mx.dtsi @@ -8,6 +8,16 @@ /* TQ-Systems GmbH MBa8Mx baseboard */ / { + backlight_lvds0: backlight0 { + compatible = "pwm-backlight"; + pwms = <&pwm3 0 5000000>; + brightness-levels = <0 4 8 16 32 64 128 255>; + default-brightness-level = <7>; + power-supply = <®_12v>; + enable-gpios = <&expander2 2 GPIO_ACTIVE_HIGH>; + status = "disabled"; + }; + beeper { compatible = "pwm-beeper"; pwms = <&pwm4 0 250000 0>; @@ -66,12 +76,31 @@ led2: led2 { }; }; + panel0: panel_lvds0 { + backlight = <&backlight_lvds0>; + status = "disabled"; + + port { + panel_in_lvds0: endpoint { + remote-endpoint = <&lvds_bridge_out>; + }; + }; + }; + pcie0_refclk: pcie0-refclk { compatible = "fixed-clock"; #clock-cells = <0>; clock-frequency = <100000000>; }; + reg_12v: regulator-12v { + compatible = "regulator-fixed"; + regulator-name = "MBA8MX_12V"; + regulator-min-microvolt = <12000000>; + regulator-max-microvolt = <12000000>; + regulator-always-on; + }; + reg_hub_vbus: regulator-hub-vbus { compatible = "regulator-fixed"; regulator-name = "MBA8MX_HUB_VBUS"; @@ -227,6 +256,27 @@ &i2c3 { scl-gpios = <&gpio5 18 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; sda-gpios = <&gpio5 19 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; + + dsi_lvds_bridge: dsi-lvds-bridge@2d { + compatible = "ti,sn65dsi83"; + reg = <0x2d>; + enable-gpios = <&expander0 6 GPIO_ACTIVE_HIGH>; + vcc-supply = <®_sn65dsi83_1v8>; + status = "disabled"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@2 { + reg = <2>; + + lvds_bridge_out: endpoint { + remote-endpoint = <&panel_in_lvds0>; + }; + }; + }; + }; }; &pwm3 { --->8---
On 08.04.2022 18:20, Jagan Teki wrote: > This series supports common bridge support for Samsung MIPI DSIM > which is used in Exynos and i.MX8MM SoC's. > > Previous RFC can be available here [1]. > > The final bridge supports both the Exynos and i.MX8MM DSI devices. > > On, summary this patch-set break the entire DSIM driver into > - platform specific glue code for platform ops, component_ops. > - common bridge driver which handle platform glue init and invoke. > > Patch 0000: Samsung DSIM bridge > > Patch 0001: platform init flag via driver_data > > Patch 0002/9: bridge fixes, atomic API's > > Patch 0010: document fsl,imx8mm-mipi-dsim > > Patch 0011: add i.MX8MM DSIM support > > Tested in Engicam i.Core MX8M Mini SoM. > > Anyone interested, please have a look on this repo [2] > > [2] https://protect2.fireeye.com/v1/url?k=930e329a-f28527b5-930fb9d5-74fe485cbfe7-b0c53e2d688ddbc5&q=1&e=e6aa727d-5ae2-4ca5-bff3-7f62d8fae87e&u=https%3A%2F%2Fgithub.com%2Fopenedev%2Fkernel%2Ftree%2Fimx8mm-dsi-v1 > [1] https://lore.kernel.org/linux-arm-kernel/YP2j9k5SrZ2%2Fo2%2F5@ravnborg.org/T/ > > Any inputs? I wanted to test this on the Exynos, but I wasn't able to find what base should I apply this patchset. I've tried linux-next as well as 95a2441e4347 ("drm: exynos: dsi: Switch to atomic funcs"). Please note that pointing a proper base for the patchset is really essential if you really want others to test it. > Jagan. > > Jagan Teki (11): > drm: bridge: Add Samsung DSIM bridge driver > drm: bridge: samsung-dsim: Handle platform init via driver_data > drm: bridge: samsung-dsim: Mark PHY as optional > drm: bridge: samsung-dsim: Add DSI init in bridge pre_enable() > drm: bridge: samsung-dsim: Fix PLL_P (PMS_P) offset > drm: bridge: samsung-dsim: Add module init, exit > drm: bridge: samsung-dsim: Add atomic_check > drm: bridge: samsung-dsim: Add atomic_get_input_bus_fmts > drm: bridge: samsung-dsim: Add input_bus_flags > dt-bindings: display: exynos: dsim: Add NXP i.MX8MM support > drm: bridge: samsung-dsim: Add i.MX8MM support > > .../bindings/display/exynos/exynos_dsim.txt | 1 + > MAINTAINERS | 12 + > drivers/gpu/drm/bridge/Kconfig | 12 + > drivers/gpu/drm/bridge/Makefile | 1 + > drivers/gpu/drm/bridge/samsung-dsim.c | 1803 +++++++++++++++++ > drivers/gpu/drm/exynos/Kconfig | 1 + > drivers/gpu/drm/exynos/exynos_drm_dsi.c | 1704 +--------------- > include/drm/bridge/samsung-dsim.h | 97 + > 8 files changed, 1982 insertions(+), 1649 deletions(-) > create mode 100644 drivers/gpu/drm/bridge/samsung-dsim.c > create mode 100644 include/drm/bridge/samsung-dsim.h > Best regards
On Mon, Apr 11, 2022 at 8:56 AM Marek Szyprowski <m.szyprowski@samsung.com> wrote: > > On 08.04.2022 18:20, Jagan Teki wrote: > > This series supports common bridge support for Samsung MIPI DSIM > > which is used in Exynos and i.MX8MM SoC's. > > > > Previous RFC can be available here [1]. > > > > The final bridge supports both the Exynos and i.MX8MM DSI devices. > > > > On, summary this patch-set break the entire DSIM driver into > > - platform specific glue code for platform ops, component_ops. > > - common bridge driver which handle platform glue init and invoke. > > > > Patch 0000: Samsung DSIM bridge > > > > Patch 0001: platform init flag via driver_data > > > > Patch 0002/9: bridge fixes, atomic API's > > > > Patch 0010: document fsl,imx8mm-mipi-dsim > > > > Patch 0011: add i.MX8MM DSIM support > > > > Tested in Engicam i.Core MX8M Mini SoM. > > > > Anyone interested, please have a look on this repo [2] > > > > [2] https://protect2.fireeye.com/v1/url?k=930e329a-f28527b5-930fb9d5-74fe485cbfe7-b0c53e2d688ddbc5&q=1&e=e6aa727d-5ae2-4ca5-bff3-7f62d8fae87e&u=https%3A%2F%2Fgithub.com%2Fopenedev%2Fkernel%2Ftree%2Fimx8mm-dsi-v1 > > [1] https://lore.kernel.org/linux-arm-kernel/YP2j9k5SrZ2%2Fo2%2F5@ravnborg.org/T/ > > > > Any inputs? > > I wanted to test this on the Exynos, but I wasn't able to find what base > should I apply this patchset. I've tried linux-next as well as > 95a2441e4347 ("drm: exynos: dsi: Switch to atomic funcs"). > > Please note that pointing a proper base for the patchset is really > essential if you really want others to test it. Can you clone his repo and test that? He posted it above. I was going to clone it at some point this week to give it a try. adam > > > > Jagan. > > > > Jagan Teki (11): > > drm: bridge: Add Samsung DSIM bridge driver > > drm: bridge: samsung-dsim: Handle platform init via driver_data > > drm: bridge: samsung-dsim: Mark PHY as optional > > drm: bridge: samsung-dsim: Add DSI init in bridge pre_enable() > > drm: bridge: samsung-dsim: Fix PLL_P (PMS_P) offset > > drm: bridge: samsung-dsim: Add module init, exit > > drm: bridge: samsung-dsim: Add atomic_check > > drm: bridge: samsung-dsim: Add atomic_get_input_bus_fmts > > drm: bridge: samsung-dsim: Add input_bus_flags > > dt-bindings: display: exynos: dsim: Add NXP i.MX8MM support > > drm: bridge: samsung-dsim: Add i.MX8MM support > > > > .../bindings/display/exynos/exynos_dsim.txt | 1 + > > MAINTAINERS | 12 + > > drivers/gpu/drm/bridge/Kconfig | 12 + > > drivers/gpu/drm/bridge/Makefile | 1 + > > drivers/gpu/drm/bridge/samsung-dsim.c | 1803 +++++++++++++++++ > > drivers/gpu/drm/exynos/Kconfig | 1 + > > drivers/gpu/drm/exynos/exynos_drm_dsi.c | 1704 +--------------- > > include/drm/bridge/samsung-dsim.h | 97 + > > 8 files changed, 1982 insertions(+), 1649 deletions(-) > > create mode 100644 drivers/gpu/drm/bridge/samsung-dsim.c > > create mode 100644 include/drm/bridge/samsung-dsim.h > > > Best regards > -- > Marek Szyprowski, PhD > Samsung R&D Institute Poland >
On Mon, Apr 11, 2022 at 9:39 AM Adam Ford <aford173@gmail.com> wrote: > > On Mon, Apr 11, 2022 at 8:56 AM Marek Szyprowski > <m.szyprowski@samsung.com> wrote: > > > > On 08.04.2022 18:20, Jagan Teki wrote: > > > This series supports common bridge support for Samsung MIPI DSIM > > > which is used in Exynos and i.MX8MM SoC's. > > > > > > Previous RFC can be available here [1]. > > > > > > The final bridge supports both the Exynos and i.MX8MM DSI devices. > > > > > > On, summary this patch-set break the entire DSIM driver into > > > - platform specific glue code for platform ops, component_ops. > > > - common bridge driver which handle platform glue init and invoke. > > > > > > Patch 0000: Samsung DSIM bridge > > > > > > Patch 0001: platform init flag via driver_data > > > > > > Patch 0002/9: bridge fixes, atomic API's > > > > > > Patch 0010: document fsl,imx8mm-mipi-dsim > > > > > > Patch 0011: add i.MX8MM DSIM support > > > > > > Tested in Engicam i.Core MX8M Mini SoM. > > > > > > Anyone interested, please have a look on this repo [2] > > > > > > [2] https://protect2.fireeye.com/v1/url?k=930e329a-f28527b5-930fb9d5-74fe485cbfe7-b0c53e2d688ddbc5&q=1&e=e6aa727d-5ae2-4ca5-bff3-7f62d8fae87e&u=https%3A%2F%2Fgithub.com%2Fopenedev%2Fkernel%2Ftree%2Fimx8mm-dsi-v1 > > > [1] https://lore.kernel.org/linux-arm-kernel/YP2j9k5SrZ2%2Fo2%2F5@ravnborg.org/T/ > > > > > > Any inputs? > > > > I wanted to test this on the Exynos, but I wasn't able to find what base > > should I apply this patchset. I've tried linux-next as well as > > 95a2441e4347 ("drm: exynos: dsi: Switch to atomic funcs"). > > > > Please note that pointing a proper base for the patchset is really > > essential if you really want others to test it. > > Can you clone his repo and test that? He posted it above. I was > going to clone it at some point this week to give it a try. Jagan, Is there anyway you could rebase this onto 5.18-rc1? Marek was having issues applying patches to a known branch, and it looks like I cannot enable stuff on Nano without applying a bunch of patches, because this base lacks the power-domain features on Nano that are present in the 5.18-rc1. thanks, adam > > adam > > > > > > > Jagan. > > > > > > Jagan Teki (11): > > > drm: bridge: Add Samsung DSIM bridge driver > > > drm: bridge: samsung-dsim: Handle platform init via driver_data > > > drm: bridge: samsung-dsim: Mark PHY as optional > > > drm: bridge: samsung-dsim: Add DSI init in bridge pre_enable() > > > drm: bridge: samsung-dsim: Fix PLL_P (PMS_P) offset > > > drm: bridge: samsung-dsim: Add module init, exit > > > drm: bridge: samsung-dsim: Add atomic_check > > > drm: bridge: samsung-dsim: Add atomic_get_input_bus_fmts > > > drm: bridge: samsung-dsim: Add input_bus_flags > > > dt-bindings: display: exynos: dsim: Add NXP i.MX8MM support > > > drm: bridge: samsung-dsim: Add i.MX8MM support > > > > > > .../bindings/display/exynos/exynos_dsim.txt | 1 + > > > MAINTAINERS | 12 + > > > drivers/gpu/drm/bridge/Kconfig | 12 + > > > drivers/gpu/drm/bridge/Makefile | 1 + > > > drivers/gpu/drm/bridge/samsung-dsim.c | 1803 +++++++++++++++++ > > > drivers/gpu/drm/exynos/Kconfig | 1 + > > > drivers/gpu/drm/exynos/exynos_drm_dsi.c | 1704 +--------------- > > > include/drm/bridge/samsung-dsim.h | 97 + > > > 8 files changed, 1982 insertions(+), 1649 deletions(-) > > > create mode 100644 drivers/gpu/drm/bridge/samsung-dsim.c > > > create mode 100644 include/drm/bridge/samsung-dsim.h > > > > > Best regards > > -- > > Marek Szyprowski, PhD > > Samsung R&D Institute Poland > >
On 11.04.2022 16:39, Adam Ford wrote: > On Mon, Apr 11, 2022 at 8:56 AM Marek Szyprowski > <m.szyprowski@samsung.com> wrote: >> On 08.04.2022 18:20, Jagan Teki wrote: >>> This series supports common bridge support for Samsung MIPI DSIM >>> which is used in Exynos and i.MX8MM SoC's. >>> >>> Previous RFC can be available here [1]. >>> >>> The final bridge supports both the Exynos and i.MX8MM DSI devices. >>> >>> On, summary this patch-set break the entire DSIM driver into >>> - platform specific glue code for platform ops, component_ops. >>> - common bridge driver which handle platform glue init and invoke. >>> >>> Patch 0000: Samsung DSIM bridge >>> >>> Patch 0001: platform init flag via driver_data >>> >>> Patch 0002/9: bridge fixes, atomic API's >>> >>> Patch 0010: document fsl,imx8mm-mipi-dsim >>> >>> Patch 0011: add i.MX8MM DSIM support >>> >>> Tested in Engicam i.Core MX8M Mini SoM. >>> >>> Anyone interested, please have a look on this repo [2] >>> >>> [2] https://protect2.fireeye.com/v1/url?k=930e329a-f28527b5-930fb9d5-74fe485cbfe7-b0c53e2d688ddbc5&q=1&e=e6aa727d-5ae2-4ca5-bff3-7f62d8fae87e&u=https%3A%2F%2Fgithub.com%2Fopenedev%2Fkernel%2Ftree%2Fimx8mm-dsi-v1 >>> [1] https://lore.kernel.org/linux-arm-kernel/YP2j9k5SrZ2%2Fo2%2F5@ravnborg.org/T/ >>> >>> Any inputs? >> I wanted to test this on the Exynos, but I wasn't able to find what base >> should I apply this patchset. I've tried linux-next as well as >> 95a2441e4347 ("drm: exynos: dsi: Switch to atomic funcs"). >> >> Please note that pointing a proper base for the patchset is really >> essential if you really want others to test it. > Can you clone his repo and test that? He posted it above. I was > going to clone it at some point this week to give it a try. Okay, my fault. I've missed that. There is a trivial compilation issue, drivers/gpu/drm/exynos/exynos_drm_dsi.c lacks "#include <linux/gpio/consumer.h>" after conversion. Besides that, it simply nukes on the simplest Exynos setup (exynos4210-trats) during the initialization: [drm] Exynos DRM: using 11c00000.fimd device for DMA mapping operations exynos-drm exynos-drm: bound 11c00000.fimd (ops fimd_component_ops) 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000048 [00000048] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.17.0-rc2-00577-g22e968113668-dirty #11635 Hardware name: Samsung Exynos (Flattened Device Tree) PC is at exynos_dsi_bind+0x14/0x3c LR is at component_bind_all+0x130/0x290 pc : [<c06924e0>] lr : [<c06b0f6c>] psr: 60000113 sp : c1cafcb8 ip : 00000002 fp : c0f4a53c r10: c135e6a8 r9 : c1efd800 r8 : 00000000 r7 : c26d2100 r6 : c2c69fc0 r5 : 00000018 r4 : 00000000 r3 : c06924cc r2 : 00000002 r1 : 00000000 r0 : c1efd800 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 10c5387d Table: 4000404a DAC: 00000051 Register r0 information: slab kmalloc-2k start c1efd800 pointer offset 0 size 2048 Register r1 information: NULL pointer Register r2 information: non-paged memory Register r3 information: non-slab/vmalloc memory Register r4 information: NULL pointer Register r5 information: non-paged memory Register r6 information: slab kmalloc-64 start c2c69fc0 pointer offset 0 size 64 Register r7 information: slab kmalloc-64 start c26d2100 pointer offset 0 size 64 Register r8 information: NULL pointer Register r9 information: slab kmalloc-2k start c1efd800 pointer offset 0 size 2048 Register r10 information: non-slab/vmalloc memory Register r11 information: non-slab/vmalloc memory Register r12 information: non-paged memory Process swapper/0 (pid: 1, stack limit = 0x(ptrval)) Stack: (0xc1cafcb8 to 0xc1cb0000) ... exynos_dsi_bind from component_bind_all+0x130/0x290 component_bind_all from exynos_drm_bind+0xe8/0x194 exynos_drm_bind from try_to_bring_up_master+0x208/0x2d0 try_to_bring_up_master from component_master_add_with_match+0xd0/0x104 component_master_add_with_match from exynos_drm_platform_probe+0xe8/0x118 exynos_drm_platform_probe from platform_probe+0x80/0xc0 platform_probe from really_probe+0xfc/0x440 really_probe from __driver_probe_device+0xa4/0x204 __driver_probe_device from driver_probe_device+0x34/0xd4 driver_probe_device from __driver_attach+0x114/0x184 __driver_attach from bus_for_each_dev+0x64/0xb0 bus_for_each_dev from bus_add_driver+0x170/0x20c bus_add_driver from driver_register+0x78/0x10c driver_register from exynos_drm_init+0xe0/0x14c exynos_drm_init from do_one_initcall+0x6c/0x3a4 do_one_initcall from kernel_init_freeable+0x1c4/0x214 kernel_init_freeable from kernel_init+0x18/0x12c kernel_init from ret_from_fork+0x14/0x2c Exception stack(0xc1caffb0 to 0xc1cafff8) ffa0: 00000000 00000000 00000000 00000000 ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 Code: e5904040 e1a00002 e3a02002 e1a01004 (e5945048) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b CPU1: stopping CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D 5.17.0-rc2-00577-g22e968113668-dirty #11635 Hardware name: Samsung Exynos (Flattened Device Tree) unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x58/0x70 dump_stack_lvl from do_handle_IPI+0x2ec/0x36c do_handle_IPI from ipi_handler+0x18/0x20 ipi_handler from handle_percpu_devid_irq+0xd0/0x394 handle_percpu_devid_irq from generic_handle_domain_irq+0x44/0x88 generic_handle_domain_irq from gic_handle_irq+0x88/0xac gic_handle_irq from generic_handle_arch_irq+0x58/0x78 generic_handle_arch_irq from __irq_svc+0x54/0x88 Exception stack(0xc1cd1f48 to 0xc1cd1f90) 1f40: 00000001 c0eff5a4 00000001 c011ca80 c1208f0c c1353420 1f60: 00000000 c1d8d000 00000000 c0f34234 c1d8d000 00000000 c0eeee98 c1cd1f98 1f80: c0109144 c0109148 20000013 ffffffff __irq_svc from arch_cpu_idle+0x40/0x44 arch_cpu_idle from default_idle_call+0x74/0x2c4 default_idle_call from do_idle+0x1cc/0x284 do_idle from cpu_startup_entry+0x18/0x1c cpu_startup_entry from 0x401018b4 ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]--- I will try to take a look into this later in the evening. Best regards
On Mon, Apr 11, 2022 at 11:25 AM Marek Szyprowski <m.szyprowski@samsung.com> wrote: > > On 11.04.2022 16:39, Adam Ford wrote: > > On Mon, Apr 11, 2022 at 8:56 AM Marek Szyprowski > > <m.szyprowski@samsung.com> wrote: > >> On 08.04.2022 18:20, Jagan Teki wrote: > >>> This series supports common bridge support for Samsung MIPI DSIM > >>> which is used in Exynos and i.MX8MM SoC's. > >>> > >>> Previous RFC can be available here [1]. > >>> > >>> The final bridge supports both the Exynos and i.MX8MM DSI devices. > >>> > >>> On, summary this patch-set break the entire DSIM driver into > >>> - platform specific glue code for platform ops, component_ops. > >>> - common bridge driver which handle platform glue init and invoke. > >>> > >>> Patch 0000: Samsung DSIM bridge > >>> > >>> Patch 0001: platform init flag via driver_data > >>> > >>> Patch 0002/9: bridge fixes, atomic API's > >>> > >>> Patch 0010: document fsl,imx8mm-mipi-dsim > >>> > >>> Patch 0011: add i.MX8MM DSIM support > >>> > >>> Tested in Engicam i.Core MX8M Mini SoM. > >>> > >>> Anyone interested, please have a look on this repo [2] I attempted to build your newer repo, but I get build errors: ~/src/linux-opendev$ make Image modules ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -j8 CALL scripts/atomic/check-atomics.sh CALL scripts/checksyscalls.sh CHK include/generated/compile.h MODPOST modules-only.symvers ERROR: modpost: "dsi_driver" [drivers/gpu/drm/exynos/exynosdrm.ko] undefined! make[1]: *** [scripts/Makefile.modpost:134: modules-only.symvers] Error 1 make[1]: *** Deleting file 'modules-only.symvers' make: *** [Makefile:1746: modules] Error 2 I'm using gcc version 11.2.0 (Ubuntu 11.2.0-17ubuntu1) part of the ubuntu 22.04 beta. I know it's beta, so it might be buggy, but I expect GCC 11.2 to be stable. I'm going to keep investigating. If I find a fix, I'll send you a private message with the patch attached to avoid spamming everyone. adam > >>> > >>> [2] https://protect2.fireeye.com/v1/url?k=930e329a-f28527b5-930fb9d5-74fe485cbfe7-b0c53e2d688ddbc5&q=1&e=e6aa727d-5ae2-4ca5-bff3-7f62d8fae87e&u=https%3A%2F%2Fgithub.com%2Fopenedev%2Fkernel%2Ftree%2Fimx8mm-dsi-v1 > >>> [1] https://lore.kernel.org/linux-arm-kernel/YP2j9k5SrZ2%2Fo2%2F5@ravnborg.org/T/ > >>> > >>> Any inputs? > >> I wanted to test this on the Exynos, but I wasn't able to find what base > >> should I apply this patchset. I've tried linux-next as well as > >> 95a2441e4347 ("drm: exynos: dsi: Switch to atomic funcs"). > >> > >> Please note that pointing a proper base for the patchset is really > >> essential if you really want others to test it. > > Can you clone his repo and test that? He posted it above. I was > > going to clone it at some point this week to give it a try. > > Okay, my fault. I've missed that. > > There is a trivial compilation issue, > drivers/gpu/drm/exynos/exynos_drm_dsi.c lacks "#include > <linux/gpio/consumer.h>" after conversion. Besides that, it simply nukes > on the simplest Exynos setup (exynos4210-trats) during the initialization: > > [drm] Exynos DRM: using 11c00000.fimd device for DMA mapping operations > exynos-drm exynos-drm: bound 11c00000.fimd (ops fimd_component_ops) > 8<--- cut here --- > Unable to handle kernel NULL pointer dereference at virtual address 00000048 > [00000048] *pgd=00000000 > Internal error: Oops: 5 [#1] PREEMPT SMP ARM > Modules linked in: > CPU: 0 PID: 1 Comm: swapper/0 Not tainted > 5.17.0-rc2-00577-g22e968113668-dirty #11635 > Hardware name: Samsung Exynos (Flattened Device Tree) > PC is at exynos_dsi_bind+0x14/0x3c > LR is at component_bind_all+0x130/0x290 > pc : [<c06924e0>] lr : [<c06b0f6c>] psr: 60000113 > sp : c1cafcb8 ip : 00000002 fp : c0f4a53c > r10: c135e6a8 r9 : c1efd800 r8 : 00000000 > r7 : c26d2100 r6 : c2c69fc0 r5 : 00000018 r4 : 00000000 > r3 : c06924cc r2 : 00000002 r1 : 00000000 r0 : c1efd800 > Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none > Control: 10c5387d Table: 4000404a DAC: 00000051 > Register r0 information: slab kmalloc-2k start c1efd800 pointer offset 0 > size 2048 > Register r1 information: NULL pointer > Register r2 information: non-paged memory > Register r3 information: non-slab/vmalloc memory > Register r4 information: NULL pointer > Register r5 information: non-paged memory > Register r6 information: slab kmalloc-64 start c2c69fc0 pointer offset 0 > size 64 > Register r7 information: slab kmalloc-64 start c26d2100 pointer offset 0 > size 64 > Register r8 information: NULL pointer > Register r9 information: slab kmalloc-2k start c1efd800 pointer offset 0 > size 2048 > Register r10 information: non-slab/vmalloc memory > Register r11 information: non-slab/vmalloc memory > Register r12 information: non-paged memory > Process swapper/0 (pid: 1, stack limit = 0x(ptrval)) > Stack: (0xc1cafcb8 to 0xc1cb0000) > ... > exynos_dsi_bind from component_bind_all+0x130/0x290 > component_bind_all from exynos_drm_bind+0xe8/0x194 > exynos_drm_bind from try_to_bring_up_master+0x208/0x2d0 > try_to_bring_up_master from component_master_add_with_match+0xd0/0x104 > component_master_add_with_match from exynos_drm_platform_probe+0xe8/0x118 > exynos_drm_platform_probe from platform_probe+0x80/0xc0 > platform_probe from really_probe+0xfc/0x440 > really_probe from __driver_probe_device+0xa4/0x204 > __driver_probe_device from driver_probe_device+0x34/0xd4 > driver_probe_device from __driver_attach+0x114/0x184 > __driver_attach from bus_for_each_dev+0x64/0xb0 > bus_for_each_dev from bus_add_driver+0x170/0x20c > bus_add_driver from driver_register+0x78/0x10c > driver_register from exynos_drm_init+0xe0/0x14c > exynos_drm_init from do_one_initcall+0x6c/0x3a4 > do_one_initcall from kernel_init_freeable+0x1c4/0x214 > kernel_init_freeable from kernel_init+0x18/0x12c > kernel_init from ret_from_fork+0x14/0x2c > Exception stack(0xc1caffb0 to 0xc1cafff8) > ffa0: 00000000 00000000 00000000 > 00000000 > ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 > ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 > Code: e5904040 e1a00002 e3a02002 e1a01004 (e5945048) > ---[ end trace 0000000000000000 ]--- > Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b > CPU1: stopping > CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D > 5.17.0-rc2-00577-g22e968113668-dirty #11635 > Hardware name: Samsung Exynos (Flattened Device Tree) > unwind_backtrace from show_stack+0x10/0x14 > show_stack from dump_stack_lvl+0x58/0x70 > dump_stack_lvl from do_handle_IPI+0x2ec/0x36c > do_handle_IPI from ipi_handler+0x18/0x20 > ipi_handler from handle_percpu_devid_irq+0xd0/0x394 > handle_percpu_devid_irq from generic_handle_domain_irq+0x44/0x88 > generic_handle_domain_irq from gic_handle_irq+0x88/0xac > gic_handle_irq from generic_handle_arch_irq+0x58/0x78 > generic_handle_arch_irq from __irq_svc+0x54/0x88 > Exception stack(0xc1cd1f48 to 0xc1cd1f90) > 1f40: 00000001 c0eff5a4 00000001 c011ca80 c1208f0c > c1353420 > 1f60: 00000000 c1d8d000 00000000 c0f34234 c1d8d000 00000000 c0eeee98 > c1cd1f98 > 1f80: c0109144 c0109148 20000013 ffffffff > __irq_svc from arch_cpu_idle+0x40/0x44 > arch_cpu_idle from default_idle_call+0x74/0x2c4 > default_idle_call from do_idle+0x1cc/0x284 > do_idle from cpu_startup_entry+0x18/0x1c > cpu_startup_entry from 0x401018b4 > ---[ end Kernel panic - not syncing: Attempted to kill init! > exitcode=0x0000000b ]--- > > > I will try to take a look into this later in the evening. > > > Best regards > -- > Marek Szyprowski, PhD > Samsung R&D Institute Poland >