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41e64c1ac7
linux/drivers/gpu
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Rodrigo Vivi 41e64c1ac7 drm/i915/cnl: Fix PLL mapping. 
On PLL Enable sequence we need to "Configure DPCLKA_CFGCR0 to turn on
the clock for the DDI and map the DPLL to the DDI"

So we first do the map and then we unset DDI_CLK_OFF to turn the clock
on. We do this in 2 separated steps.

However, on this second step where we should only unset the off bit we are
also unmapping the ddi from the pll. So we end up using the pll 0
for almost everything. Consequently breaking cases with more than one
display.

Fixes: 555e38d273 ("drm/i915/cnl: DDI - PLL mapping")
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Kahola, Mika <mika.kahola@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: James Ausmus <james.ausmus@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171003220859.21352-2-rodrigo.vivi@intel.com
(cherry picked from commit 87145d95c3)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2017-10-16 17:11:02 -07:00
..
drm drm/i915/cnl: Fix PLL mapping. 2017-10-16 17:11:02 -07:00
host1x drm/tegra: Changes for v4.14-rc1 2017-08-21 17:37:33 +10:00
ipu-v3 gpu: ipu-v3: pre: implement workaround for ERR009624 2017-10-11 12:04:24 +02:00
vga
Makefile