linux-kernel - [RFC PATCH 00/10] Support simple-framebuffer on imx8m

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Message-ID: <20241028102559.1451383-1-dario.binacchi@amarulasolutions.com>
Date: Mon, 28 Oct 2024 11:25:23 +0100
From: Dario Binacchi <dario.binacchi@...rulasolutions.com>
To: linux-kernel@...r.kernel.org
Cc: linux-amarula@...rulasolutions.com,
	Dario Binacchi <dario.binacchi@...rulasolutions.com>,
	Andrey Smirnov <andrew.smirnov@...il.com>,
	Andrzej Hajda <andrzej.hajda@...el.com>,
	Conor Dooley <conor+dt@...nel.org>,
	David Airlie <airlied@...il.com>,
	Fabio Estevam <festevam@...il.com>,
	Inki Dae <inki.dae@...sung.com>,
	Jagan Teki <jagan@...rulasolutions.com>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Jessica Zhang <quic_jesszhan@...cinc.com>,
	Jonas Karlman <jonas@...boo.se>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Marek Vasut <marex@...x.de>,
	Maxime Ripard <mripard@...nel.org>,
	Michael Trimarchi <michael@...rulasolutions.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Peng Fan <peng.fan@....com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Rob Herring <robh@...nel.org>,
	Robert Foss <rfoss@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>,
	Shengjiu Wang <shengjiu.wang@....com>,
	Simona Vetter <simona@...ll.ch>,
	Stefan Agner <stefan@...er.ch>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
	devicetree@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-pm@...r.kernel.org
Subject: [RFC PATCH 00/10] Support simple-framebuffer on imx8m

This series is the Linux counterpart of what was sent to U-Boot [1]
for the support of the simple-framebuffer for the BSH SMM S2Pro board.

The need to avoid re-initializing the hardware (power domains,
controllers, bridges, display panels) that has already been initialized
and kept powered on by the bootloader has required updating more than
one YAML file, with the addition of boolean properties to inform the
driver that the corresponding hardware has been initialized and left
on by the bootloader. All these properties are added on the fly by the
bootloader to the various relevant nodes.

Support for the simple framebuffer for the dts of imx8mn-bsh-smm-s2/pro
board has been sent with a separate patch from this series [2].

[1] https://lore.kernel.org/all/20240913095622.72377-18-dario.binacchi@amarulasolutions.com/T/
[2] https://lore.kernel.org/imx/20241024102800.3481574-1-dario.binacchi@amarulasolutions.com/T/


Dario Binacchi (10):
  dt-bindings: soc: imx-blk-ctrl: add 'fsl,power-domains-boot-on'
    property
  pmdomain: imx8m-blk-ctrl: don't turn on a power domain already on
  dt-bindings: power: gpcv2: add 'fsl,boot-on' property
  pmdomain: imx: gpcv2: don't turn on a power domain already on
  dt-bindings: display: panel: add 'syna,boot-on' property
  drm/panel: synaptics-r63353: don't re-activate the panel if already
    setup
  dt-bindings: bridge: samsung-dsim: add 'samsung,boot-on' property
  drm: bridge: samsung-dsim: don't re-activate the bridge if already
    setup
  dt-bindings: lcdif: add 'fsl,boot-on' property
  drm/mxsfb: stop controller and drain FIFOs if already initialized

 .../display/bridge/samsung,mipi-dsim.yaml     |  5 ++
 .../bindings/display/fsl,lcdif.yaml           |  5 ++
 .../display/panel/synaptics,r63353.yaml       |  5 ++
 .../bindings/power/fsl,imx-gpcv2.yaml         |  6 +++
 .../soc/imx/fsl,imx8mn-disp-blk-ctrl.yaml     |  9 ++++
 drivers/gpu/drm/bridge/samsung-dsim.c         | 13 ++++-
 drivers/gpu/drm/mxsfb/mxsfb_drv.c             |  3 ++
 drivers/gpu/drm/mxsfb/mxsfb_drv.h             |  1 +
 drivers/gpu/drm/mxsfb/mxsfb_kms.c             | 14 ++++-
 .../gpu/drm/panel/panel-synaptics-r63353.c    | 10 +++-
 drivers/pmdomain/imx/gpcv2.c                  | 32 +++++++++++-
 drivers/pmdomain/imx/imx8m-blk-ctrl.c         | 51 ++++++++++++++++++-
 12 files changed, 148 insertions(+), 6 deletions(-)

-- 
2.43.0