From 3a8ed20db88923988640d64ff47da2a07c5c1063 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Tue, 27 Jun 2017 01:58:32 -0700 Subject: 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 . Reported-by: Hans Verkuil Cc: Dmitry Lifshitz Cc: Tomi Valkeinen Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap4-sdp-es23plus.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/boot/dts/omap4-sdp-es23plus.dts') 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 */ >; -- cgit v1.2.3