From: "Guido Günther" <agx@sigxcpu.org>
To: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>,
Lucas Stach <l.stach@pengutronix.de>,
Philipp Zabel <p.zabel@pengutronix.de>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v1 0/1] drm/imx/dcss: Add interconnect support
Date: Tue, 1 Dec 2020 12:34:06 +0100 [thread overview]
Message-ID: <cover.1606822378.git.agx@sigxcpu.org> (raw)
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@60Hz.
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
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: "Guido Günther" <agx@sigxcpu.org>
To: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>,
Lucas Stach <l.stach@pengutronix.de>,
Philipp Zabel <p.zabel@pengutronix.de>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v1 0/1] drm/imx/dcss: Add interconnect support
Date: Tue, 1 Dec 2020 12:34:06 +0100 [thread overview]
Message-ID: <cover.1606822378.git.agx@sigxcpu.org> (raw)
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@60Hz.
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
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
WARNING: multiple messages have this Message-ID (diff)
From: "Guido Günther" <agx@sigxcpu.org>
To: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>,
Lucas Stach <l.stach@pengutronix.de>,
Philipp Zabel <p.zabel@pengutronix.de>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v1 0/1] drm/imx/dcss: Add interconnect support
Date: Tue, 1 Dec 2020 12:34:06 +0100 [thread overview]
Message-ID: <cover.1606822378.git.agx@sigxcpu.org> (raw)
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@60Hz.
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
next reply other threads:[~2020-12-01 11:35 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-01 11:34 Guido Günther [this message]
2020-12-01 11:34 ` [PATCH v1 0/1] drm/imx/dcss: Add interconnect support Guido Günther
2020-12-01 11:34 ` Guido Günther
2020-12-01 11:34 ` [PATCH v1 1/1] " Guido Günther
2020-12-01 11:34 ` Guido Günther
2020-12-01 11:34 ` Guido Günther
2020-12-01 11:41 ` Lucas Stach
2020-12-01 11:41 ` Lucas Stach
2020-12-01 11:41 ` Lucas Stach
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