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Message-ID: <7b5a6990a2ed8f06986cee66380264cb7e84c720.camel@toradex.com>
Date: Tue, 23 Mar 2021 00:19:47 +0000
From: Marcel Ziswiler <marcel.ziswiler@...adex.com>
To: "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"victor.liu@....com" <victor.liu@....com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>
CC: "narmstrong@...libre.com" <narmstrong@...libre.com>,
"linux-imx@....com" <linux-imx@....com>,
"robert.foss@...aro.org" <robert.foss@...aro.org>,
"Laurent.pinchart@...asonboard.com"
<Laurent.pinchart@...asonboard.com>,
"mchehab@...nel.org" <mchehab@...nel.org>,
"daniel@...ll.ch" <daniel@...ll.ch>,
"shawnguo@...nel.org" <shawnguo@...nel.org>,
"vkoul@...nel.org" <vkoul@...nel.org>,
"kernel@...gutronix.de" <kernel@...gutronix.de>,
"s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
"a.hajda@...sung.com" <a.hajda@...sung.com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"jonas@...boo.se" <jonas@...boo.se>,
"kishon@...com" <kishon@...com>,
"airlied@...ux.ie" <airlied@...ux.ie>,
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"lee.jones@...aro.org" <lee.jones@...aro.org>,
"jernej.skrabec@...l.net" <jernej.skrabec@...l.net>
Subject: Re: [PATCH v6 00/14] Add some DRM bridge drivers support for
i.MX8qm/qxp SoCs
Hi Liu
I gave this a try however I believe I am still missing some piece as it throws the following during compilation
of the device tree:
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_irqsteer"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_dpu_lpcg"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_dpu_lpcg"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_disp_lpcg"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_disp_lpcg"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_dpr1_channel1"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_dpr1_channel2"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_dpr1_channel3"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_dpr2_channel1"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_dpr2_channel2"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:333.18-439.7: ERROR (phandle_references): /dpu@...80000: Reference
to non-existent node or label "dc0_dpr2_channel3"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:501.38-591.3: ERROR (phandle_references): /syscon@...21000:
Reference to non-existent node or label "mipi_lvds_0_di_mipi_lvds_regs_lpcg"
arch/arm64/boot/dts/freescale/imx8qxp.dtsi:603.29-656.7: ERROR (phandle_references): /pixel-combiner@...20000:
Reference to non-existent node or label "dc0_pixel_combiner_lpcg"
For now I just put all the examples from the various Documentation/devicetree/bindings/*/imx8qxp-*.yaml files
directly into arch/arm64/boot/dts/freescale/imx8qxp.dtsi. Maybe you do have the various device tree parts
available somewhere as well?
Any suggestions? Do you by any chance have a git tree available anywhere which includes all dependencies and
everything which one could try?
Thanks!
Cheers
Marcel
On Wed, 2021-03-17 at 11:42 +0800, Liu Ying wrote:
> Hi,
>
> This is the v6 series to add some DRM bridge drivers support
> for i.MX8qm/qxp SoCs.
>
> The bridges may chain one by one to form display pipes to support
> LVDS displays. The relevant display controller is DPU embedded in
> i.MX8qm/qxp SoCs.
>
> The DPU KMS driver can be found at:
> https://www.spinics.net/lists/arm-kernel/msg878542.html
>
> This series supports the following display pipes:
> 1) i.MX8qxp:
> prefetch eng -> DPU -> pixel combiner -> pixel link ->
> pixel link to DPI(PXL2DPI) -> LVDS display bridge(LDB)
>
> 2) i.MX8qm:
> prefetch eng -> DPU -> pixel combiner -> pixel link -> LVDS display bridge(LDB)
>
>
> This series dropped the patch 'phy: Add LVDS configuration options', as
> suggested by Robert Foss, because it has already been sent with the following
> series to add Mixel combo PHY found in i.MX8qxp:
> https://www.spinics.net/lists/arm-kernel/msg879957.html
>
> So, this version depends on that series.
>
>
> Patch 1/14 and 2/14 add bus formats used by pixel combiner.
>
> Patch 7/14 adds dt-binding for Control and Status Registers module(a syscon
> used by PXL2DPI and LDB), which references the PXL2DPI and LDB schemas.
>
> Patch 10/14 adds a helper for LDB bridge drivers.
>
> Patch 3/14 ~ 6/14, 8/14, 9/14 and 11/14 ~ 13/14 add drm bridge drivers and
> dt-bindings support for the bridges.
>
> Patch 14/14 updates MAINTAINERS.
>
>
> I've tested this series with a koe,tx26d202vm0bwa dual link LVDS panel and
> a LVDS to HDMI bridge(with a downstream drm bridge driver).
>
>
> Welcome comments, thanks.
>
> v5->v6:
> * Fix data organizations in documentation(patch 2/14) for
> MEDIA_BUS_FMT_RGB{666,888}_1X30-CPADLO. (Laurent)
> * Add Laurent's R-b tags on patch 1/14 and 2/14.
> * Drop 'select' schema from the CSR dt-binding documentation(patch 7/14). (Rob)
> * Add Rob's R-b tag on patch 8/14.
>
> v4->v5:
> * Drop the patch 'phy: Add LVDS configuration options'. (Robert)
> * Add Robert's R-b tags on patch 1/14, 2/14, 4/14 and 6/14.
> * Drop the 'PC_BUF_PARA_REG' register definition from the pixel combiner bridge
> driver(patch 4/14). (Robert)
> * Make a comment occupy a line in the pixel link bridge driver(patch 6/14).
> (Robert)
> * Introduce a new patch(patch 7/14) to add dt-binding for Control and Status
> Registers module. (Rob)
> * Make imx-ldb-helper be a pure object to be linked with i.MX8qxp LDB bridge
> driver and i.MX8qm LDB bridge driver, instead of a module. Correspondingly,
> rename 'imx8{qm, qxp}-ldb.c' to 'imx8{qm, qxp}-ldb-drv.c'. (Robert)
> * Move 'imx_ldb_helper.h' to 'drivers/gpu/drm/bridge/imx/imx-ldb-helper.h'.
> (Robert)
> * s/__FSL_IMX_LDB__/__IMX_LDB_HELPER__/ for 'imx-ldb-helper.h'.
>
> v3->v4:
> * Use 'fsl,sc-resource' DT property to get the SCU resource ID associated with
> the PXL2DPI instance instead of using alias ID. (Rob)
> * Add Rob's R-b tag on patch 11/14.
>
> v2->v3:
> * Drop 'fsl,syscon' DT properties from fsl,imx8qxp-ldb.yaml and
> fsl,imx8qxp-pxl2dpi.yaml. (Rob)
> * Mention the CSR module controls LDB and PXL2DPI in fsl,imx8qxp-ldb.yaml and
> fsl,imx8qxp-pxl2dpi.yaml.
> * Call syscon_node_to_regmap() to get regmaps from LDB bridge helper driver
> and PXL2DPI bridger driver instead of syscon_regmap_lookup_by_phandle().
> * Drop two macros from pixel link bridge driver which help define functions
> and define them directly.
> * Properly disable all pixel link controls to POR value by calling
> imx8qxp_pixel_link_disable_all_controls() from
> imx8qxp_pixel_link_bridge_probe().
> * Add Rob's R-b tags on patch 4/14 and 6/14.
>
> v1->v2:
> * Rebase the series upon the latest drm-misc-next branch(5.11-rc2 based).
> * Use graph schema in the dt-bindings of the bridges. (Laurent)
> * Require all four pixel link output ports in fsl,imx8qxp-pixel-link.yaml.
> (Laurent)
> * Side note i.MX8qm/qxp LDB official name 'pixel mapper' in fsl,imx8qxp-ldb.yaml.
> (Laurent)
> * Mention pixel link is accessed via SCU firmware in fsl,imx8qxp-pixel-link.yaml.
> (Rob)
> * Use enum instead of oneOf + const for the reg property of pixel combiner
> channels in fsl,imx8qxp-pixel-combiner.yaml. (Rob)
> * Rewrite the function to find the next bridge in pixel link bridge driver
> by properly using OF APIs and dropping unnecessary DT validation. (Rob)
> * Drop unnecessary port availability check in i.MX8qxp pixel link to DPI
> bridge driver.
> * Drop unnecessary DT validation from i.MX8qxp LDB bridge driver.
> * Use of_graph_get_endpoint_by_regs() and of_graph_get_remote_endpoint() to
> get the input remote endpoint in imx8qxp_ldb_set_di_id() of i.MX8qxp LDB
> bridge driver.
> * Avoid using companion_port OF node after putting it in
> imx8qxp_ldb_parse_dt_companion() of i.MX8qxp LDB bridge driver.
> * Drop unnecessary check for maximum available LDB channels from
> i.MX8qm LDB bridge driver.
> * Mention i.MX8qm/qxp LDB official name 'pixel mapper' in i.MX8qm/qxp LDB
> bridge drivers and Kconfig help messages.
>
> Liu Ying (14):
> media: uapi: Add some RGB bus formats for i.MX8qm/qxp pixel combiner
> media: docs: Add some RGB bus formats for i.MX8qm/qxp pixel combiner
> dt-bindings: display: bridge: Add i.MX8qm/qxp pixel combiner binding
> drm/bridge: imx: Add i.MX8qm/qxp pixel combiner support
> dt-bindings: display: bridge: Add i.MX8qm/qxp display pixel link
> binding
> drm/bridge: imx: Add i.MX8qm/qxp display pixel link support
> dt-bindings: mfd: Add i.MX8qm/qxp Control and Status Registers module
> binding
> dt-bindings: display: bridge: Add i.MX8qxp pixel link to DPI binding
> drm/bridge: imx: Add i.MX8qxp pixel link to DPI support
> drm/bridge: imx: Add LDB driver helper support
> dt-bindings: display: bridge: Add i.MX8qm/qxp LVDS display bridge
> binding
> drm/bridge: imx: Add LDB support for i.MX8qxp
> drm/bridge: imx: Add LDB support for i.MX8qm
> MAINTAINERS: add maintainer for DRM bridge drivers for i.MX SoCs
>
> .../bindings/display/bridge/fsl,imx8qxp-ldb.yaml | 173 +++++
> .../display/bridge/fsl,imx8qxp-pixel-combiner.yaml | 144 +++++
> .../display/bridge/fsl,imx8qxp-pixel-link.yaml | 106 +++
> .../display/bridge/fsl,imx8qxp-pxl2dpi.yaml | 108 ++++
> .../devicetree/bindings/mfd/fsl,imx8qxp-csr.yaml | 192 ++++++
> .../userspace-api/media/v4l/subdev-formats.rst | 156 +++++
> MAINTAINERS | 10 +
> drivers/gpu/drm/bridge/Kconfig | 2 +
> drivers/gpu/drm/bridge/Makefile | 1 +
> drivers/gpu/drm/bridge/imx/Kconfig | 42 ++
> drivers/gpu/drm/bridge/imx/Makefile | 9 +
> drivers/gpu/drm/bridge/imx/imx-ldb-helper.c | 232 +++++++
> drivers/gpu/drm/bridge/imx/imx-ldb-helper.h | 98 +++
> drivers/gpu/drm/bridge/imx/imx8qm-ldb-drv.c | 586 +++++++++++++++++
> drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c | 720 +++++++++++++++++++++
> .../gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c | 448 +++++++++++++
> drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c | 427 ++++++++++++
> drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c | 485 ++++++++++++++
> include/uapi/linux/media-bus-format.h | 6 +-
> 19 files changed, 3944 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-ldb.yaml
> create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-combiner.yaml
> create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-link.yaml
> create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pxl2dpi.yaml
> create mode 100644 Documentation/devicetree/bindings/mfd/fsl,imx8qxp-csr.yaml
> create mode 100644 drivers/gpu/drm/bridge/imx/Kconfig
> create mode 100644 drivers/gpu/drm/bridge/imx/Makefile
> create mode 100644 drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
> create mode 100644 drivers/gpu/drm/bridge/imx/imx-ldb-helper.h
> create mode 100644 drivers/gpu/drm/bridge/imx/imx8qm-ldb-drv.c
> create mode 100644 drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c
> create mode 100644 drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c
> create mode 100644 drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
> create mode 100644 drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
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