Remove the use of DDC I2C bus bitbang to support reading of EDID and rely on support from internal HDMI I2C master controller instead. As a result remove the device tree property ddc-i2c-bus.
Signed-off-by: Sanchayan Maity <maitysancha...@gmail.com> --- Hello, This patch is tested with the following patch applied https://patchwork.kernel.org/patch/9296883/ and is based on the suggestions from Vladimir https://lkml.org/lkml/2016/8/29/322 This and following two patches are based on top of shawn's for-next branch. Regards, Sanchayan. --- arch/arm/boot/dts/imx6q-apalis-ixora.dts | 6 ------ arch/arm/boot/dts/imx6qdl-apalis.dtsi | 25 +++++++++---------------- 2 files changed, 9 insertions(+), 22 deletions(-) diff --git a/arch/arm/boot/dts/imx6q-apalis-ixora.dts b/arch/arm/boot/dts/imx6q-apalis-ixora.dts index 207b85b..d99979e 100644 --- a/arch/arm/boot/dts/imx6q-apalis-ixora.dts +++ b/arch/arm/boot/dts/imx6q-apalis-ixora.dts @@ -55,7 +55,6 @@ "fsl,imx6q"; aliases { - i2c0 = &i2cddc; i2c1 = &i2c1; i2c2 = &i2c2; i2c3 = &i2c3; @@ -186,11 +185,6 @@ }; &hdmi { - ddc-i2c-bus = <&i2cddc>; - status = "okay"; -}; - -&i2cddc { status = "okay"; }; diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi b/arch/arm/boot/dts/imx6qdl-apalis.dtsi index 99e323b..8c67dd8 100644 --- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi +++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi @@ -53,18 +53,6 @@ status = "disabled"; }; - /* DDC_I2C: I2C2_SDA/SCL on MXM3 205/207 */ - i2cddc: i2c@0 { - compatible = "i2c-gpio"; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_i2c_ddc>; - gpios = <&gpio3 16 GPIO_ACTIVE_HIGH /* sda */ - &gpio2 30 GPIO_ACTIVE_HIGH /* scl */ - >; - i2c-gpio,delay-us = <2>; /* ~100 kHz */ - status = "disabled"; - }; - reg_1p8v: regulator-1p8v { compatible = "regulator-fixed"; regulator-name = "1P8V"; @@ -209,6 +197,12 @@ }; }; +&hdmi { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_hdmi_ddc>; + status = "disabled"; +}; + /* * GEN1_I2C: I2C1_SDA/SCL on MXM3 209/211 (e.g. RTC on carrier * board) @@ -633,11 +627,10 @@ >; }; - pinctrl_i2c_ddc: gpioi2cddcgrp { + pinctrl_hdmi_ddc: hdmiddcgrp { fsl,pins = < - /* DDC bitbang */ - MX6QDL_PAD_EIM_EB2__GPIO2_IO30 0x1b0b0 - MX6QDL_PAD_EIM_D16__GPIO3_IO16 0x1b0b0 + MX6QDL_PAD_EIM_EB2__HDMI_TX_DDC_SCL 0x4001b8b1 + MX6QDL_PAD_EIM_D16__HDMI_TX_DDC_SDA 0x4001b8b1 >; }; -- 2.9.3
