diff options
| author | Tony Lindgren <tony@atomide.com> | 2017-06-27 10:58:32 +0200 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2017-08-14 20:34:23 +0200 |
| commit | 3a8ed20db88923988640d64ff47da2a07c5c1063 (patch) | |
| tree | f0786d7c4e23596e31815dc50e6151022c41775d /arch/arm/boot/dts/omap4-sdp-es23plus.dts | |
| parent | ARM: dts: am437x-gp-evm: Add support for buzzer (diff) | |
| download | linux-3a8ed20db88923988640d64ff47da2a07c5c1063.tar.xz linux-3a8ed20db88923988640d64ff47da2a07c5c1063.zip | |
ARM: dts: Disable HDMI CEC internal pull-ups
Devices using an external encoder, ESD protection and level shifter
such as tpd12s015 or ip4791cz12 have the CEC pull in the encoder
chip. And on var-som-om44, there is external pull up resistor R30.
So the internal CEC pull-up resistor needs to be disabled as otherwise
the external and internal pull are parallel making the pull value
much smaller than intended. This leads into the CEC not working as
reported by Hans Verkuil <hverkuil@xs4all.nl>.
Reported-by: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Dmitry Lifshitz <lifshitz@compulab.co.il>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/boot/dts/omap4-sdp-es23plus.dts')
| -rw-r--r-- | arch/arm/boot/dts/omap4-sdp-es23plus.dts | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/omap4-sdp-es23plus.dts b/arch/arm/boot/dts/omap4-sdp-es23plus.dts index b4d19a7ae393..3d3140fd9659 100644 --- a/arch/arm/boot/dts/omap4-sdp-es23plus.dts +++ b/arch/arm/boot/dts/omap4-sdp-es23plus.dts @@ -10,7 +10,7 @@ /* SDP boards with 4430 ES2.3+ or 4460 have external pullups on SCL & SDA */ &dss_hdmi_pins { pinctrl-single,pins = < - OMAP4_IOPAD(0x09a, PIN_INPUT_PULLUP | MUX_MODE0) /* hdmi_cec.hdmi_cec */ + OMAP4_IOPAD(0x09a, PIN_INPUT | MUX_MODE0) /* hdmi_cec.hdmi_cec */ OMAP4_IOPAD(0x09c, PIN_INPUT | MUX_MODE0) /* hdmi_scl.hdmi_scl */ OMAP4_IOPAD(0x09e, PIN_INPUT | MUX_MODE0) /* hdmi_sda.hdmi_sda */ >; |