linux-kernel - [PATCH v1 0/1] drm/imx/dcss: Add interconnect support

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Date:   Tue,  1 Dec 2020 12:34:06 +0100
From:   Guido Günther <agx@...xcpu.org>
To:     Laurentiu Palcu <laurentiu.palcu@....nxp.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 0/1] drm/imx/dcss: Add interconnect support

This allows us to raise DRAM bandiwth to a high enough value for a
stable picture on i.mx8mq. We pick a bandwidth that should be sufficient
for 4k@...z.

This was tested on a Librem 5 with the (not yet) mainline mhdp DP controller.
Without that initial boot works fine but e.g. fb unblank results in a cyan
screen.

Modelled like mdp5_kms.

Guido Günther (1):
  drm/imx/dcss: Add interconnect support

 drivers/gpu/drm/imx/dcss/dcss-dev.c | 47 +++++++++++++++++++++++++++--
 drivers/gpu/drm/imx/dcss/dcss-dev.h |  3 ++
 2 files changed, 48 insertions(+), 2 deletions(-)

-- 
2.29.2