On 01/12/2018 11:12 PM, Sergei Shtylyov wrote:
According to the latest revisions of the R-Car gen3 manual, the LVDS mode
must be set before the LVDS I/O pins are enabled, not after -- fix the
gen3 LVDS startup sequence accordingly...
While at it, also fix the comment preceding the first LVDCR0 write in
the R-Car gen2 startup code that still talks about hardcoding the LVDS
mode 0...
Fixes: e947eccbeba4 ("drm: rcar-du: Add support for LVDS mode selection")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
Index: linux/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c
===================================================================
--- linux.orig/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c
+++ linux/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c
[...]
@@ -115,7 +118,8 @@ static void rcar_du_lvdsenc_start_gen3(s
* Turn the PLL on, set it to LVDS normal mode, wait for the startup
* delay and turn the output on.
*/
- lvdcr0 = (lvds->mode << LVDCR0_LVMD_SHIFT) | LVDCR0_PLLON;
+
+ lvdcr0 = | LVDCR0_PLLON;
Dunno how it slipped in -- I've surely built and tested the resulting
kernel... should be |=, of course. Laurent, should I repost?
[...]
MBR, Sergei
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