linux-kernel - [PATCH 0/3] drm: rcar-du: Rework clock configuration

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Date:   Mon, 30 Jul 2018 19:20:11 +0200
From:   Jacopo Mondi <jacopo@...ndi.org>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        David Airlie <airlied@...ux.ie>
Cc:     Jacopo Mondi <jacopo@...ndi.org>,
        dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS FOR RENESAS),
        linux-renesas-soc@...r.kernel.org (open list:DRM DRIVERS FOR RENESAS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 0/3] drm: rcar-du: Rework clock configuration

Hello
   this series improves the DU peripheral input clock selection procedure,
fixing high-resolution modes for non-DPLL channels, as DPAD and LVDS ones.

The first patch in the series is a rework from Laurent of the clock selection
procedure, clearly separating DPLL equipped channels from channels only
equipped with an interanl divider.

The non-DPLL channels clock input selection procedure is improved in patch
[3/3] by exploiting the external clock source ability to generate the desired
pixel clock (when possible).

This improvements is sparkled from the following BSP patch
https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas-bsp.git/commit/
?id=32e9be612773ce0ed75295a10764151633938528

that un-conditionally uses the externally generated clock source as output
pixel clock.

Tested on M3-W Salvator-X board and VGA output: fixes 1920x1080 display.

Jacopo Mondi (2):
  drm: rcar-du: Rename var to a more precise name
  drm: rcar-du: Improve non-DPLL clock selection

Laurent Pinchart (1):
  drm: rcar-du: Rework clock configuration based on hardware limits

 drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 182 ++++++++++++++++++++++-----------
 1 file changed, 122 insertions(+), 60 deletions(-)

--
2.7.4