| Message ID | 1461259669-5194-1-git-send-email-Linux.HWI@garmin.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 21/04/16 20:27, J.D. Schroeder wrote: > From: Jim Lodes <jim.lodes@garmin.com> > > The DDC scl high and low times were set to the minimum values > from the i2c specification, but the i2c specification takes into > account the rise time and fall time to calculate the frequency. > To pass HDMI certification DDC can not exceed 100kHz therefore in > a system where the rise times and fall times are negligible the high > and low times for scl need to be 10us. > > Signed-off-by: Jim Lodes <jim.lodes@garmin.com> > Signed-off-by: J.D. Schroeder <jay.schroeder@garmin.com> > --- > drivers/gpu/drm/omapdrm/dss/hdmi5_core.c | 4 ++-- > drivers/video/fbdev/omap2/omapfb/dss/hdmi5_core.c | 4 ++-- > 2 files changed, 4 insertions(+), 4 deletions(-) Thanks! Queuing this for 4.7. Tomi
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5_core.c b/drivers/gpu/drm/omapdrm/dss/hdmi5_core.c index 6a39752..d993f78 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi5_core.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi5_core.c @@ -51,8 +51,8 @@ static void hdmi_core_ddc_init(struct hdmi_core_data *core) { void __iomem *base = core->base; const unsigned long long iclk = 266000000; /* DSS L3 ICLK */ - const unsigned ss_scl_high = 4000; /* ns */ - const unsigned ss_scl_low = 4700; /* ns */ + const unsigned ss_scl_high = 4600; /* ns */ + const unsigned ss_scl_low = 5400; /* ns */ const unsigned fs_scl_high = 600; /* ns */ const unsigned fs_scl_low = 1300; /* ns */ const unsigned sda_hold = 1000; /* ns */ diff --git a/drivers/video/fbdev/omap2/omapfb/dss/hdmi5_core.c b/drivers/video/fbdev/omap2/omapfb/dss/hdmi5_core.c index 8ea531d..f3e4b81 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/hdmi5_core.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/hdmi5_core.c @@ -51,8 +51,8 @@ static void hdmi_core_ddc_init(struct hdmi_core_data *core) { void __iomem *base = core->base; const unsigned long long iclk = 266000000; /* DSS L3 ICLK */ - const unsigned ss_scl_high = 4000; /* ns */ - const unsigned ss_scl_low = 4700; /* ns */ + const unsigned ss_scl_high = 4600; /* ns */ + const unsigned ss_scl_low = 5400; /* ns */ const unsigned fs_scl_high = 600; /* ns */ const unsigned fs_scl_low = 1300; /* ns */ const unsigned sda_hold = 1000; /* ns */