[PATCH 0/5] sunxi: fix H6 HDMI related issues
jernej.skrabec at siol.net
Thu Feb 4 13:47:05 EST 2021
Over the year I got plenty of reports of troubles with H6 HDMI signal.
Sometimes monitor flickers, sometimes there was no image at all and
sometimes it didn't play well with AVR.
It turns out there are multiple issues. Patch 1 fixes clock issue,
which didn't adjust parent rate, even if it is allowed to do so. Patch 2
adds polarity config in tcon1. This is seemingly not needed for pre-HDMI2
controllers, although BSP drivers set it accordingly every time. It
turns out that HDMI2 controllers often don't work with monitors if
polarity is not set correctly. Patch 3 always set clock rate for HDMI
controller. Patch 4 fixes cpce PHY setting for 594 MHz. Patch 5 fixes
comment and clock rate limit (wrong reasoning).
Please take a look.
Jernej Skrabec (5):
clk: sunxi-ng: mp: fix parent rate change flag check
drm/sun4i: tcon: set sync polarity for tcon1 channel
drm/sun4i: dw-hdmi: always set clock rate
drm/sun4i: Fix H6 HDMI PHY configuration
drm/sun4i: dw-hdmi: Fix max. frequency for H6
drivers/clk/sunxi-ng/ccu_mp.c | 2 +-
drivers/gpu/drm/sun4i/sun4i_tcon.c | 24 ++++++++++++++++++++++++
drivers/gpu/drm/sun4i/sun4i_tcon.h | 5 +++++
drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c | 10 +++-------
drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h | 1 -
drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c | 2 +-
6 files changed, 34 insertions(+), 10 deletions(-)
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