From 83b839b8b3a599336c2d48ab22ed919a77666476 Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Mon, 26 Nov 2018 17:02:15 +0000 Subject: [PATCH] dtoverlays: Add i2c on 0&1 option to TC358743, ADV7282 and OV5647 Adds the option of configuring i2c0 to be on GPIOs 0&1 as this is of use on the Compute Module. Also fixes the ov5647 overlay where the override enabled the wrong fragments. Signed-off-by: Dave Stevenson --- arch/arm/boot/dts/overlays/README | 14 ++++++++++++-- arch/arm/boot/dts/overlays/adv7282m-overlay.dts | 10 +++++++++- arch/arm/boot/dts/overlays/ov5647-overlay.dts | 10 +++++++++- arch/arm/boot/dts/overlays/tc358743-overlay.dts | 10 +++++++++- 4 files changed, 39 insertions(+), 5 deletions(-) --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -277,7 +277,9 @@ Info: Analog Devices ADV7282M analogue Uses Unicam1, which is the standard camera connector on most Pi variants. Load: dtoverlay=adv7282m,= -Params: i2c_pins_28_29 Use pins 28&29 for the I2C instead of 44&45. +Params: i2c_pins_0_1 Use pins 0&1 for the I2C instead of 44&45. + Useful on Compute Modules. + i2c_pins_28_29 Use pins 28&29 for the I2C instead of 44&45. This is required for Pi B+, 2, 0, and 0W. addr Overrides the I2C address (default 0x21) @@ -286,7 +288,9 @@ Name: adv728x-m Info: Analog Devices ADV728[0|1|2]-M analogue video to CSI2 bridges. This is a wrapper for adv7282m, and defaults to ADV7282M. Load: dtoverlay=adv728x-m,= -Params: i2c_pins_28_29 Use pins 28&29 for the I2C instead of 44&45. +Params: i2c_pins_0_1 Use pins 0&1 for the I2C instead of 44&45. + Useful on Compute Modules. + i2c_pins_28_29 Use pins 28&29 for the I2C instead of 44&45. This is required for Pi B+, 2, 0, and 0W. addr Overrides the I2C address (default 0x21) adv7280m Select ADV7280-M. @@ -1324,6 +1328,9 @@ Params: cam0-pwdn GPIO use configuration of the particular Pi variant in use. + i2c_pins_0_1 Use pins 0&1 for the I2C instead of 44&45. + Useful on Compute Modules. + i2c_pins_28_29 Use pins 28&29 for the I2C instead of 44&45. This is required for Pi B+, 2, 0, and 0W. @@ -1949,6 +1956,9 @@ Params: 4lane Use 4 la (574Mbit/s) and 486000000 (972Mbit/s - default) are supported by the driver. + i2c_pins_0_1 Use pins 0&1 for the I2C instead of 44&45. + Useful on Compute Modules. + i2c_pins_28_29 Use pins 28&29 for the I2C instead of 44&45. This is required for Pi B+, 2, 0, and 0W. --- a/arch/arm/boot/dts/overlays/adv7282m-overlay.dts +++ b/arch/arm/boot/dts/overlays/adv7282m-overlay.dts @@ -60,6 +60,13 @@ }; }; fragment@4 { + target = <&i2c0_pins>; + __dormant__ { + brcm,pins = <0 1>; + brcm,function = <4>; /* alt0 */ + }; + }; + fragment@5 { target = <&i2c_vc>; __overlay__ { status = "okay"; @@ -67,7 +74,8 @@ }; __overrides__ { - i2c_pins_28_29 = <0>,"+2-3"; + i2c_pins_0_1 = <0>,"-2-3+4"; + i2c_pins_28_29 = <0>,"+2-3-4"; addr = <&adv728x>,"reg:0"; }; }; --- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts +++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts @@ -69,6 +69,13 @@ }; }; fragment@4 { + target = <&i2c0_pins>; + __dormant__ { + brcm,pins = <0 1>; + brcm,function = <4>; /* alt0 */ + }; + }; + fragment@5 { target = <&i2c_vc>; __overlay__ { status = "okay"; @@ -76,7 +83,8 @@ }; __overrides__ { - i2c_pins_28_29 = <0>,"+4-5"; + i2c_pins_0_1 = <0>,"-2-3+4"; + i2c_pins_28_29 = <0>,"+2-3-4"; cam0-pwdn = <&ov5647>,"pwdn-gpios:4"; cam0-led = <&ov5647>,"pwdn-gpios:16"; }; --- a/arch/arm/boot/dts/overlays/tc358743-overlay.dts +++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts @@ -94,6 +94,13 @@ }; }; fragment@6 { + target = <&i2c0_pins>; + __dormant__ { + brcm,pins = <0 1>; + brcm,function = <4>; /* alt0 */ + }; + }; + fragment@7 { target = <&i2c_vc>; __overlay__ { status = "okay"; @@ -101,7 +108,8 @@ }; __overrides__ { - i2c_pins_28_29 = <0>,"+4-5"; + i2c_pins_0_1 = <0>,"-4-5+6"; + i2c_pins_28_29 = <0>,"+4-5-6"; 4lane = <0>, "-2+3"; link-frequency = <&tc358743>,"link-frequencies#0"; };